User Manual (Full Configuration) - Huawei Technical Support

Part Number: 31010NRB

NetCol5000-C030 In-row Chilled Water Smart Cooling Product

User Manual (Full Configuration)

Issue 07

Date 2019-01-15

HUAWEI TECHNOLOGIES CO., LTD.

Issue 07 (2019-01-15) Copyright © Huawei Technologies Co., Ltd. i

Copyright © Huawei Technologies Co., Ltd. 2019. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior

written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective

holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and

the customer. All or part of the products, services and features described in this document may not be

within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,

information, and recommendations in this document are provided "AS IS" without warranties, guarantees or

representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://e.huawei.com

http://e.huawei.com/

NetCol5000-C030 In-row Chilled Water Smart Cooling

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User Manual (Full Configuration) About This Document

Issue 07 (2019-01-15) Copyright © Huawei Technologies Co., Ltd. ii

About This Document

Purpose

This document describes the full configuration of NetCol5000-C030 chilled water-cooled

in-row smart cooling product (NetCol5000-C-FC for short), in terms of its product description,

installation, commissioning, controller, operation and maintenance (O&M). It helps users

rapidly learn the operation and maintenance (O&M) of the NetCol5000-C-FC.

The figures provided in this document are for reference only.

Intended Audience

This document is intended for:

Sales personnel

Technical support personnel

System engineers

Hardware installation personnel

Commissioning personnel

Data configuration engineers

Maintenance personnel

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol Description

Indicates an imminently hazardous situation

which, if not avoided, will result in death or

serious injury.

Indicates a potentially hazardous situation

which, if not avoided, could result in death

or serious injury.


which, if not avoided, may result in minor

or moderate injury.


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Issue 07 (2019-01-15) Copyright © Huawei Technologies Co., Ltd. iii

Symbol Description


which, if not avoided, could result in

equipment damage, data loss, performance

deterioration, or unanticipated results.

NOTICE is used to address practices not

related to personal injury.

Calls attention to important information,

best practices and tips.

NOTE is used to address information not

related to personal injury, equipment

damage, and environment deterioration.

Change History

Changes between document issues are cumulative. The latest document issue contains all the

changes made in earlier issues.

Issue 07 (2019-01-15)

Updated the manual name and so on.

Issue 06 (2018-01-04)

This issue is the sixth official release, which incorporates the following changes:

Added glycol adding requirements.

Issue 05 (2016-01-04)

This issue is the fifth official release, which incorporates the following changes:

Modified the description of Teamwork Networking and Monitoring.

Added the specifications of ports on top and bottom plate.

Issue 04 (2014-11-15)

This issue is the fourth official release, which incorporates the following changes:

Modified the step of removing the plug for the chilled water pipes.

Added the method of fastening the condensate pipes.

Added the method of connecting the chilled water pipes.

Issue 03 (2014-07-30)

This issue is the third official release, which incorporates the following changes:

Modified the document description.


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Issue 07 (2019-01-15) Copyright © Huawei Technologies Co., Ltd. iv

Issue 02 (2013-12-10)

This issue is the second official release, which incorporates the following changes:

Modified the product name.

Issue 01 (2013-10-20)

This issue is the first official release.


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User Manual (Full Configuration) Contents

Issue 07 (2019-01-15) Copyright © Huawei Technologies Co., Ltd. v

Contents

About This Document .................................................................................................................... ii

1 Safety Precautions ......................................................................................................................... 1

1.1 General Safety .............................................................................................................................................................. 1

1.2 Electrical Safety ............................................................................................................................................................ 3

1.3 Mechanical Safety ........................................................................................................................................................ 4

1.4 Running Safety ............................................................................................................................................................. 5

1.5 Others............................................................................................................................................................................ 5

2 Product Description ...................................................................................................................... 7

2.1 Model Description ........................................................................................................................................................ 7

2.2 Components .................................................................................................................................................................. 8

2.2.1 Cooling Components ................................................................................................................................................. 8

2.2.2 Controller ................................................................................................................................................................. 10

2.2.2.1 Appearance and Ports............................................................................................................................................ 10

2.2.2.2 Functions and Features ......................................................................................................................................... 13

2.2.3 Monitoring System .................................................................................................................................................. 13

2.3 Environment requirements .......................................................................................................................................... 14

2.4 Technical Specifications ............................................................................................................................................. 15

2.5 Performance Curves .................................................................................................................................................... 16

3 Installation Guide ....................................................................................................................... 23

3.1 Installation Precautions ............................................................................................................................................... 23

3.1.1 Tools ........................................................................................................................................................................ 23

3.1.2 Material Preparations ............................................................................................................................................... 25

3.1.3 Structural Specifications .......................................................................................................................................... 32

3.2 Transportation and Unpacking .................................................................................................................................... 33

3.3 Checking Fittings ........................................................................................................................................................ 35

3.4 Installation Flowchart ................................................................................................................................................. 36

3.5 Checking the Pressure ................................................................................................................................................. 38

3.6 Remove the Securing Plate ......................................................................................................................................... 40

3.7 Exhausting Nitrogen ................................................................................................................................................... 43

3.8 Installing the Water Pipe Adapter ............................................................................................................................... 43

3.9 Adjusting Balance and Fastening ................................................................................................................................ 45

3.10 Connecting the NetCol5000-C-FC with a Server Cabinet in Parallel ....................................................................... 46


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3.11 Connecting the Condensate Drainpipes .................................................................................................................... 47

3.11.1 Connecting the Condensate Drainpipes (Routing from the top) ............................................................................ 47

3.11.2 Connecting the Condensate Drainpipes (Routing from the bottom) ...................................................................... 48

3.11.3 Connecting the Condensate Self-drainpipe ............................................................................................................ 49

3.12 Connecting the Water Inlet or Outlet Pipes ............................................................................................................... 51

3.13 Injecting Nitrogen ..................................................................................................................................................... 52

3.14 Filling water to exhausting air .................................................................................................................................. 52

3.15 Cable Connections .................................................................................................................................................... 53

3.15.1 Cable Connection and Precautions ........................................................................................................................ 53

3.15.2 Electrical Ports of an Indoor Unit .......................................................................................................................... 54

3.15.3 Connecting Power Cables ...................................................................................................................................... 55

3.15.4 Connecting the Voltage Jumper ............................................................................................................................. 56

3.15.5 Installing the T/H Sensor ....................................................................................................................................... 57

3.15.6 Teamwork Networking and Monitoring................................................................................................................. 60

3.15.7 Connecting Ground Cables .................................................................................................................................... 63

3.16 Checking After Installation ....................................................................................................................................... 64

4 Power-On Commissioning ........................................................................................................ 65

4.1 Commissioning Preparations ...................................................................................................................................... 65

4.2 Setting Parameter ........................................................................................................................................................ 65

4.2.1 Powering On the NetCol5000-C-FC ........................................................................................................................ 65

4.2.2 Commissioning Procedure ....................................................................................................................................... 66

4.3 Follow-up Procedure .................................................................................................................................................. 68

5 Controller Operate Guide.......................................................................................................... 69

5.1 LCD ............................................................................................................................................................................ 69

5.2 First Power-On ............................................................................................................................................................ 69

5.3 Startup Screen ............................................................................................................................................................. 69

5.4 Indicator ...................................................................................................................................................................... 70

5.5 Home screen ............................................................................................................................................................... 71

5.6 Start and Shutdown ..................................................................................................................................................... 72

5.7 Temperature and Humidity Curves ............................................................................................................................. 73

5.8 Common Functions ..................................................................................................................................................... 73

5.8.1 Status ....................................................................................................................................................................... 74

5.8.2 Operating Info .......................................................................................................................................................... 74

5.8.3 Query Historical Alarms .......................................................................................................................................... 75

5.9 Running ...................................................................................................................................................................... 76

5.9.1 Status ....................................................................................................................................................................... 76

5.9.2 System Information ................................................................................................................................................. 76

5.9.3 Device Details .......................................................................................................................................................... 76

5.10 Alarms ....................................................................................................................................................................... 77

5.10.1 Query Active Alarms ............................................................................................................................................. 78

5.10.2 Query Historical Alarms ........................................................................................................................................ 79


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5.10.3 Delete Historical Alarms ........................................................................................................................................ 79

5.11 Settings ..................................................................................................................................................................... 80

5.11.1 User Settings .......................................................................................................................................................... 82

5.11.1.1 Setting User Parameters ...................................................................................................................................... 83

5.11.1.2 Restore the Default Password ............................................................................................................................. 84

5.11.2 Communications Settings ...................................................................................................................................... 85

5.11.3 Alarm Settings ........................................................................................................................................................ 86

5.11.4 System Settings ...................................................................................................................................................... 88

5.11.5 Basic Settings ......................................................................................................................................................... 93

5.11.6 Restore Defaults ..................................................................................................................................................... 94

5.12 Teamwork Settings ................................................................................................................................................... 95

5.13 Maintenance .............................................................................................................................................................. 99

5.13.1 Diagnostic Mode .................................................................................................................................................. 100

5.13.2 Log Maintenance ................................................................................................................................................. 102

5.13.3 Performance Maintenance ................................................................................................................................... 103

5.13.4 Sensor Adjust ....................................................................................................................................................... 104

5.13.5 Screen Calibration ............................................................................................................................................... 105

5.13.6 USB Operations ................................................................................................................................................... 106

5.14 About ...................................................................................................................................................................... 112

6 System Operation and Maintenance ..................................................................................... 115

6.1 Routine Maintenance ................................................................................................................................................ 115

6.1.1 Routine Maintenance Overview ............................................................................................................................ 115

6.1.2 Electrical Control Box Component Maintenance .................................................................................................. 116

6.1.3 Air Filter Maintenance ........................................................................................................................................... 117

6.1.4 Condensate Pump Maintenance ............................................................................................................................. 118

6.1.5 Indoor Fan Maintenance ........................................................................................................................................ 118

6.1.6 Electrical Control System Maintenance ................................................................................................................. 119

6.2 Alarm Reference ....................................................................................................................................................... 120

6.3 Troubleshooting ........................................................................................................................................................ 136

6.4 Parts Replacement .................................................................................................................................................... 139

6.4.1 Replacement Requirements ................................................................................................................................... 139

6.4.2 Replacing Components in the Electrical Control Box ........................................................................................... 139

6.4.3 Replacing an Air Filter ........................................................................................................................................... 140

6.4.4 Replacing a Condensate Pump .............................................................................................................................. 141

6.4.5 Replacing a Fan ..................................................................................................................................................... 143

6.4.6 Replacing a Water Sensor ...................................................................................................................................... 144

6.4.7 Replacing an Air Exhaust Temperature Sensor ...................................................................................................... 145

6.4.8 Replacing an Air Intake Temperature Sensor ......................................................................................................... 146

6.4.9 Replacing a Water Inlet or Outlet Temperature Sensor .......................................................................................... 147

6.4.10 Replacing a Monitoring Module .......................................................................................................................... 149

6.4.11 Replacing a Rectifier ............................................................................................................................................ 150


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6.4.12 Replacing a Chilled Water Valve ......................................................................................................................... 151

6.4.13 Replacing a Float ................................................................................................................................................. 153

6.4.14 Replacing a Differential Pressure Sensor ............................................................................................................. 154

6.4.15 Replacing a Controller Panel ............................................................................................................................... 155

A Acronyms and Abbreviations ................................................................................................ 158

B Glycol Adding Requirements ................................................................................................ 159

C Controller Operation Rights Configuration Table ............................................................ 160

D Electric Diagram ....................................................................................................................... 165

E Controller Menu Structure...................................................................................................... 170


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User Manual (Full Configuration) 1 Safety Precautions

Issue 07 (2019-01-15) Copyright © Huawei Technologies Co., Ltd. 1

1 Safety Precautions

1.1 General Safety

Declaration

Huawei shall not take responsibility for any damage caused by any of the following:

Operation under severe environments which are not specified in this document.

Usage under installation and operating environments which are not specified in related

international specifications.

Unauthorized product changes and software code modification.

Operation ignoring safety precautions and operation guidance specified in this document.

Damage caused by abnormal natural environments.

Overview To ensure the safety of people and equipment, pay attention to the safety symbols on the

equipment and all the safety instructions in this document.

The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this

document do not represent all safety instructions. They are only supplements to the

safety instructions.

Pay attention to the safety symbols on the equipment and all safety instructions in this

document. The safety precautions given in this document do not cover all safety

precautions. Huawei will not be liable for any consequence caused by violation of the

safety operation regulations and design, production, and usage standards.

Appliances shall be classified according to the accessibility either as appliance not

accessible to the general public.

Local Safety Regulations

Follow local laws and regulations when operating the equipment. The safety instructions in

this document are only supplements to local laws and regulations.


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Personnel Requirements

Personnel who will install, operate, and maintain Huawei equipment must receive thorough

training, understand all necessary safety precautions, and be able to correctly perform all

operations.

Only trained and qualified personnel are allowed to install, operate, and maintain the

equipment.

Only personnel certified or authorized by Huawei are allowed to replace or modify the

equipment or components (including software).

Any fault or error that might cause safety problems must be reported immediately to a

supervisor.

Grounding Requirements When installing a device, always install the ground cable first. When uninstalling a

device, disconnect it at the very end.

Do not damage the ground conductor.

Do not operate the device without a properly installed ground conductor.

The device must be connected permanently to the protection ground.

Personal Safety Do not perform operations on the equipment or cables during thunderstorms.

Keep unauthorized personnel away from the equipment.

When operating the equipment, wear insulation shoes and gloves and take measures to

protect your eyes. Remove conductive objects such as jewelry and watches to avoid

electric shocks or burns.

Ensure that tools are insulated.

This appliance can be used by:

− Children aged from 8 years and above

− People with reduced physical, sensory, or mental capabilities

− People who lack of experience and knowledge

The prerequisite is that they have been given supervision or instruction concerning use of

the appliance in a safe way and understand the hazards involved.

Equipment Safety Put away the key to the cabinet door during installation, operation, and maintenance.

Only trained and qualified personnel are allowed to use the key.

Before operating the equipment, ensure that the equipment is secured to a floor or

another immovable object such as a wall or mounting rack.

Do not block any ventilation opening when the equipment is in operation.

Tighten screws using a tool when installing a panel.

After the installation is complete, remove packing materials from the equipment area.

Never use water to clean the electrical components in the interior and exterior of the

cabinet.


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1.2 Electrical Safety

High Voltage

The device is powered by a high-voltage power supply. Direct or indirect contact (through

damp or conductive objects) with high-voltage power sources will result in serious injury

or death.

Non-standard and improper high voltage operations may result in fire or electric shocks.

High Leakage Current

Ground the device components and the general ground cable before powering the device on.

Ensure that the ground continuity requirements stipulated in IEC61439-1:2011 is met, and the

ground resistance is 0.1 ohm at most. Otherwise, personal injury or device damage may be

caused by high leakage current.

Cover the exposed parts of cables inside the device with PVC insulation tape and place them

in appropriate positions.

Power Cable

Do not install or remove power cables when the equipment is powered on. Transient contact

between the core wire of a power cable and a conductor may generate electric arcs or sparks,

which may start a fire or cause eye injury.

Turn off the power switch before installing or removing a power cable.

Verify that the label on the power cable is correct before connecting the cable.

To ensure safety, damaged power cables must be replaced by the manufacturer, the

manufacturer's service agent, or similarly qualified persons.

Ensure that the equipment has a mechanism for disconnecting from the main power

supply. Contact intervals must be provided between different levels so that a circuit can

be disconnected under class III overvoltage conditions. Cables for the mechanism must

be incorporated into the fixed wiring based on the wiring rules.

Fuse


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To ensure that the equipment runs safely, replace blown fuses with new fuses of the same

model and specifications.

1.3 Mechanical Safety

Drilling Holes

Do not drill the cabinet at will. Drilling holes without complying with the requirements affects

the electromagnetic shielding performance of the cabinet and damages the cables inside the

cabinet. In addition, if the scraps caused by drilling enter the cabinet, the printed circuit

boards (PCBs) may be short circuited.

Drill holes with approval of the customer, contractor, and Huawei.

Before drilling holes on the rack, first remove the cables inside the rack.

To protect your eyes from metal shavings, wear a pair of goggles when drilling holes.

Before drilling holes, wear protective gloves.

After drilling, clean up the metal shavings.

Sharp Objects

Before you hold or carry a device, wear protective gloves to avoid getting injured by sharp

edges of the device.

Handling Fans When replacing a component, place the component, screws, and tools in a safe place.

Otherwise, if any of them fall into the operating fans, the fans may be damaged.

When replacing a component near fans, do not insert your fingers or boards into the

operating fans until the fans are switched off and stops running.

Moving Heavy Objects


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Wear protective gloves when moving heavy objects.

Be careful to prevent injury when moving heavy objects.

To prevent injury, when moving the chassis outwards, be aware of unfixed or heavy

objects on the chassis.

At least two persons are required to move the chassis. When moving the chassis, ensure

that it does not tilt at an angle that exceeds 15 degrees from the vertical direction.

When moving or lifting the chassis, well protect the chassis to avoid scratches or crashes.

When moving the chassis, do not use a part to support the body. Otherwise, the part may

be damaged.

Welding Hazard At least two persons are required at the welding site.

The operator must have licenses for welding.

No flammable materials are allowed in the welding area.

Ensure that fire extinguishers, wet cloths, and water containers are prepared.

Do not place a flaming welding torch on parts or the ground. Do not put welding torch

with residual acetylene and oxygen inside a metal container to avoid gas leakage and

burning.

Get the high-temperature pipe cooled down after welding.

Do not perform welding and cutting on a container under pressure. Power off the device

before any welding operation.

1.4 Running Safety High-speed running part: fan

High voltage: components inside the electric control box

1.5 Others

Binding Signal Cables

Signal cables must be bound separately from power cables with a spacing of at least 50 mm.

Laying Out Cables

In very low temperatures, violent impacts or vibration may crack the plastic cable jacket. To

ensure safety, comply with the following requirements:

Cables must be laid out and installed only when the temperature is higher than 0°C.


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Cables previously stored at subzero temperatures must be stored at room temperature for

at least 24 hours before they are laid out.

Handle cables with caution, especially at a low temperature. Do not drop cables from

vehicles to the ground.

Cables must be routed with a distance of at least 30 mm between the cables and the DC

busbar, shunt, and fuse. This prevents damage to and decelerates deterioration of the

insulation layer of the cables. Cables must be flame-retardant and must not be routed

behind the air inlets or outlets of the cabinet. The air inlets and outlets must not be

blocked.

Storage Ensure that the equipment is not located near heat sources or directly exposed to

sunlight.

To avoid explosion or refrigerant leaks, keep sources of ignition and high-temperature

objects far away from the equipment. This is especially important for equipment

containing high-pressure nitrogen or refrigerant.

Recycling

This marking indicates that this product may not be disposed of with other housed

wastes in the European Union's areas. Recycle the product to promote the sustainable reuse of

resources and to avoid possible environment pollution and harm to human health. To recycle

the product, use your local recycling system or contact the retailer where the product was

purchased. The retailer can recycle this product in a safe and environmentally friendly way.

Manual Loss

If you lose this manual, contact Huawei technical support to obtain the electronic document or

download it from http://www.huawei.com.

http://www.huawei.com/


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User Manual (Full Configuration) 2 Product Description


2 Product Description

2.1 Model Description

Figure 2-1 shows the naming rule for the NetCol5000-C-FC series products.

Figure 2-1 Naming rule for the NetCol5000-C-FC series products


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2.2 Components

The NetCol5000-C-FC consists of cooling components, the controller, and monitoring

system.

2.2.1 Cooling Components

Dimensions of the NetCol5000-C-FC

NetCol5000-C-FC can be installed on a concrete floor or an ESD floor, is combined with IT

cabinets. It supports underfloor or overhead cabling and piping. It is maintained from the front

and rear doors without movement. Figure 2-2 shows three dimensions of the

NetCol5000-C-FC.

Figure 2-2 Dimensions of the NetCol5000-C-FC (unit: mm)


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Physical Ports

Figure 2-3 Bottom and top views of the NetCol5000-C-FC (unit: mm)

(1) Bottom outlet for the power and

PE cables

(2) Bottom outlet for the signal cable and forcible

drainpipe

(3) Bottom water outlet pipe (4) Condensate drainpipe port

(5) Bottom water inlet pipe (6) Reserved hole for humidifier pipe

(7) Top water inlet pipe (8) Top outlet for the signal cable and forcible

drainpipe

(9) Top water outlet pipe (10) Top outlet for power line and PE line

Table 2-1 lists the diameter of pipes and cables requirements.

Table 2-1 The diameter of pipes and cables

Content Specification


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Content Specification

Water inlet and outlet pipe DN25 (Recommended diameter, prepare it by yourself)

Forcible drainpipes Standard configuration: Φ=4 mm (outer diameter Φ=7

mm), length = 5 m

Condensate Drainpipes Standard configuration: Φ=10 mm (outer diameter Φ=14

mm), length = 2 m

Machine power supply core Double-insulated cables: 3 x 2.5 mm2 (Recommended

diameter, prepare it by yourself)

PE line (Outside the cabinet) ≥ 6 mm2 (Recommended diameter, prepare it by yourself)

Components

NetCol5000-C-FC consists of chilled water valve, electronic commutation (EC) fan, heat

exchanger, air filter, and condensate pump.

Chilled water valve

The brand name flow regulating valve is used, which features good environment

adaptability, precise adjustment and temperature control, energy efficient, high reliability,

long service life, and easy installation.

EC fan

The brand name fan features high reliability and long service life, and saves more energy

than common fans by 30%.

Heat exchanger

The finned-tube heat exchanger with a zinc-plated layer adopts the computational fluid

dynamics (CFD) to optimize the process design, which greatly improves the heat

exchange efficiency

Air filter

G3 air filter meet requirements for equipment room cleanness.

Condensate pump

The drainage system uses dual floats and double water pumps, achieving higher

reliability.

2.2.2 Controller

2.2.2.1 Appearance and Ports

Appearance

The controller provides a 7-inch true color touchscreen and man-machine interfaces for query,

setting, monitoring, and maintenance.

The indicator on the panel displays operating status of the smart cooling product. Figure 2-4

shows the position of the indicator. Table 2-2 describes the mapping between indicators,

buzzers, and alarms. If alarms of different severities (critical, major, minor, or warning) are

raised simultaneously, the indicator status corresponds to the alarm with the highest severity


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level and the buzzer status corresponds to the unacknowledged alarm with the highest severity

level.

Figure 2-4 Display panel

(1) Indicator (2) Display panel

Table 2-2 Indicator and buzzer status description

Alarm Status Indicator Buzzer

The device is operating properly, or a

warning is generated.

Green No buzzing

There is an unacknowledged major

alarm.

Yellow Intermittent buzzing

There is an unacknowledged critical

alarm.

Red Constant buzzing


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Ports

Figure 2-5 Controller side ports

Table 2-3 Ports

No. Name Note

1 MUS05A Reserved

2 FE (fast Ethernet) communications port

3 CAN communications port for the main control board and

LCD

4 RS485_1 Reserved

5 USB Host After installing the WiFi module, connect the WiFi

module to the smart cooling product using the app

on the mobile phone to obtain the initial startup

password (for V200R001C20 and above software

versions).

Insert the USB flash drive, import and export the

configuration file, export run logs, and upgrade

software.

6 RST restart switch for the display

7 SD Reserved

8 SW1-4 Dual in-line package (DIP) switch on LCD


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2.2.2.2 Functions and Features

Functions When only one NetCol5000-C-FC is running, the controller provides logic control of

components in the NetCol5000-C-FC to meet temperature and humidity requirements.

The LCD on the controller allows you to set parameters for the NetCol5000-C-FC and

query its status.

When multiple NetCol5000-C-FCs work cooperatively, the controller optimally

distributes the heat load to reduce power consumption and provides backup to improve

reliability.

You can monitor and manage one or more NetCol5000-C-FCs using the remote

management terminal.

Features The controller provides a touchscreen with a user-friendly interface.

The controller controls the NetCol5000-C-FC precisely and responds quickly.

The multi-level password protection mechanism prevents misoperation.

Password verification is required upon the first startup to ensure the system security. No

password verification is required for subsequent startup if the first verification succeeds.

The controller protects the NetCol5000-C-FC from power failures and water leaks,

ensuring system reliability.

The LCD on the controller displays the operating status and time of the components in

the NetCol5000-C-FC in real time.

The fault diagnosis system automatically displays fault information, which facilitates

maintenance.

The NetCol5000-C-FC provides abundant external ports such as RS232 ports, RS485

ports, fast ethernet (FE) ports, and USB ports that are protected by a security mechanism.

2.2.3 Monitoring System

The monitoring system provides logic control, data collection, control delivering, alarm

reporting, data storage, user right management, and teamwork. It can connect to your

monitoring system over a northbound port (RS485 or RS232) for remote management.

The NetCol5000-C-FC can be networked over a controller area network (CAN) bus to

perform the teamwork, which efficiently saves energy and prolongs the service life.

Figure 2-6 shows the network diagram of the monitoring system.


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Figure 2-6 Group control network diagram

2.3 Environment requirements

Table 2-4 describes the environment requirements for the NetCol5000-C-FC.

Table 2-4 Environment requirements

Item Environment Requirements

Product model NetCol5000-C030H2A2010020E0

Environment Class A environment in data centers

Operating temperature 4°C to 55°Ca

Operating humidity ≤ 95% RH

Altitude Less than 1000 m. The refrigerating capacity is derated when

the altitude is above 1000 m. For details, see Figure 2-9

Storage temperature –40°C to +70°C

Storage humidity ≤ 95% RH

Water requirements Filter need to be installed on the inlet pipe, PH value of

chilled water is 7.0 – 9.0

Maximum water

temperature

20°Cb

a: When the ambient temperature is below 0°C, the NetCol5000-C-FC need to increase

certain concentration of ethylene glycol solution, specifically refer to Glycol Correction

Coefficient Curves.

b: Adjust the alarm threshold when generating the high temperature alarms if the

temperature is over 20°C.


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2.4 Technical Specifications

Table 2-5 lists the technical specifications of the NetCol5000-C-FC.

Table 2-5 Technical specifications

Item Description

Category Chilled water cooled in-row smart cooling product

Cooling

mode

Chilled water cooled

Cooling

capacity

30 kWa

Rating

power

1 kW

Air supply

mode

Horizontal air supply

Power

supply

200 V to 240 V 1 Ph 50/60 Hz

Primary power supply: rated voltage ±10% and rated frequency ±2 Hz

respectively

Input

power

Dual power supply: one primary power supply and one secondary power

supply

Fan

characterist

ic

EC fan

Fan speed

characterist

ic

Stepless speed adjustment

Total

airflow

5100 m3/h

Maximum

operating

pressure

1.6 MPa

Air filter G3 filter

Condensate

pump

Yes

Dimensions

(W x D x

H)

300 mm x 1000 mm x 2000 mm

300 mm x 1200 mm x 2000 mm

Packing

dimensions

(W x D x

H)

760 mm x 1350 mm x 2200 mm


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Item Description

Net

weight/Gro

ss weigh

240 kg (depth: 1000 mm)

250 kg (depth: 1200 mm)

Pipe and

cable

routing

Installed on a concrete floor or an ESD floor

Environme

ntal

certificatio

n

RoHS, WEEE and REACH

a: The return air dry-bulb temperature/wet-bulb temperature is 37.8°C/20.8°C, the

temperature of chilled water is 10°C and flow is 5.04 m3/h.

2.5 Performance Curves

System specifications

With rated power and maximum air volume, the NetCol5000-C-FC has different performance

specifications for cooling capacity, sensitive heat, and water supply based on chilled water

temperatures and temperature rises. Table 2-6, Table 2-7, Table 2-8, Table 2-9, and Table 2-10

list the performance specifications.

Table 2-6 Specifications for a 5.5°C chilled water supply system

Item Performance Specifications

Return air

temperatur

e

Dry-bulb

temperature (°C)

40 37 35 32 28

Wet-bulb

temperature (°C)

21.4 20.5 19.8 18.9 17.6

5°C

temperatur

e rise

Cooling capacity

(kW)

40.63 36.79 33.21 29.27 23.98

Sensible cooling

capacity (kW)

39.62 35.76 33.21 29.27 23.98

Water supply

(m3/h)

7.02 6.36 5.73 5.04 4.13

6°C

temperatur

e rise

Cooling capacity

(kW)

38.56 34.63 31.82 27.87 22.52

Sensible cooling

capacity (kW)

38.26 34.63 31.82 27.87 22.52

Water supply 5.54 4.97 4.57 4.00 3.23


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(m3/h)

7°C

temperatur

e rise

Cooling capacity

(kW)

36.91 33.07 30.44 26.49 21.12

Sensible cooling

capacity (kW)

36.91 33.07 30.44 26.49 21.12

Water supply

(m3/h)

4.54 4.05 3.74 3.25 2.59

Table 2-7 Performance specifications in a 7°C chilled water system


Return air

temperatur

e

Dry-bulb

temperature (°C)

40 37 35 32 28

Wet-bulb

temperature (°C)

21.4 20.5 19.8 18.9 17.6

5°C

temperatur

e rise

Cooling capacity

(kW)

37.70 33.91 31.29 27.26 21.92

Sensible cooling

capacity (kW)

37.70 33.91 31.29 27.26 21.92

Water supply

(m3/h)

6.48 5.90 5.44 4.68 3.74

6°C

temperatur

e rise

Cooling capacity

(kW)

36.33 32.51 29.92 25.95 20.58

Sensible cooling

capacity (kW)

36.33 32.51 29.92 25.95 20.58

Water supply

(m3/h)

5.18 4.68 4.32 3.74 2.95

7°C

temperatur

e rise

Cooling capacity

(kW)

35.05 31.11 28.41 24.55 19.14

Sensible cooling

capacity (kW)

35.05 31.11 28.41 24.55 19.14

Water supply

(m3/h)

4.32 3.82 3.46 3.02 2.34



Return air Dry-bulb 40 37 35 32 28


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temperatur

e

temperature (°C)

Wet-bulb

temperature (°C)

21.4 20.5 19.8 18.9 17.6

5°C

temperatur

e rise

Cooling capacity

(kW)

33.77 30.00 27.31 23.37 17.92

Sensible cooling

capacity (kW)

33.77 30.00 27.31 23.37 17.92

Water supply

(m3/h)

5.76 5.18 4.68 4.03 3.06

6°C

temperatur

e rise

Cooling capacity

(kW)

32.54 28.63 26.03 22.03 16.59

Sensible cooling

capacity (kW)

32.54 28.63 26.03 22.03 16.59

Water supply

(m3/h) 4.68 4.10 3.75 3.17 2.38

7°C

temperatur

e rise

Cooling capacity

(kW)

31.16 27.37 24.65 20.61 15.15

Sensible cooling

capacity (kW)

31.16 27.37 24.65 20.61 15.15

Water supply

(m3/h)

3.82 3.39 3.02 2.52 1.85



Return air

temperatur

e

Dry-bulb

temperature (°C)

40 37 35 32 28

Wet-bulb

temperature (°C)

21.4 20.5 19.8 18.9 17.6

5°C

temperatur

e rise

Cooling capacity

(kW)

30.00 26.04 23.53 19.44 14.01

Sensible cooling

capacity (kW)

30.00 26.04 23.53 19.44 14.01

Water supply

(m3/h)

5.18 4.46 4.11 3.36 2.41

6°C

temperatur

e rise

Cooling capacity

(kW)

28.66 24.78 22.18 18.09 12.61

Sensible cooling 28.66 24.78 22.18 18.09 12.61


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capacity (kW)

Water supply

(m3/h)

4.11 3.57 3.20 2.59 1.80

7°C

temperatur

e rise

Cooling capacity

(kW)

27.38 23.44 20.80 16.74 11.26

Sensible cooling

capacity (kW)

27.38 23.44 20.80 16.74 11.26

Water supply

(m3/h)

3.36 2.88 2.56 2.05 1.38



Return air

temperatur

e

Dry-bulb

temperature (°C)

40 37 35 32 28

Wet-bulb

temperature (°C)

21.4 20.5 19.8 18.9 17.6

5°C

temperatur

e rise

Cooling capacity

(kW)

27.33 23.44 20.83 16.77 11.31

Sensible cooling

capacity (kW)

27.33 23.44 20.83 16.77 11.31

Water supply

(m3/h)

4.68 4.03 3.60 2.88 1.94

6°C

temperatur

e rise

Cooling capacity

(kW)

26.10 22.14 19.53 15.49 9.95

Sensible cooling

capacity (kW)

26.10 22.14 19.53 15.49 9.95

Water supply

(m3/h)

3.74 3.17 2.81 2.23 1.43

7°C

temperatur

e rise

Cooling capacity

(kW)

24.92 20.85 18.18 14.07 8.55

Sensible cooling

capacity (kW)

24.92 20.85 18.18 14.07 8.55

Water supply

(m3/h)

3.10 2.56 2.23 1.72 1.05


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Chilled Water Drop Curve

Figure 2-7 Curve between the pressure drop and water flow

Air Volume Curve

Figure 2-8 Curve between the air volume and fan output

Test environment: The ambient temperature is 25°C.


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Curve between the Cooling Capacity and Altitude

Figure 2-9 Curve between the cooling capacity and altitude

Glycol Correction Coefficient Curves

Figure 2-10 Cooling capacity and glycol solution density

The cooling capacity is obtained by multiplying the glycol solution density by the rated

cooling capacity.


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Figure 2-11 The pressure drop coefficient and glycol solution density

The pressure drop is obtained by multiplying the glycol solution density by the standard

atmospheric pressure drop.


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User Manual (Full Configuration) 3 Installation Guide


3 Installation Guide

3.1 Installation Precautions

To ensure the optimal operating condition and longest service life, install the

NetCol5000-C-FC correctly as required.

Check whether the environment meets the requirements before installation, and whether

reconstruction is needed for routing pipes and cables and constructing ventilation pipes.

Install the NetCol5000-C-FC according to the design drawing and reserve space for

maintenance.

Install the water inlet and outlet pipes to the predefined paths and reserve proper length

for connecting water inlet and outlet pipes.

3.1.1 Tools

Table 3-1, Table 3-2, and Table 3-3 list the tools for installing the NetCol5000-C-FC. Add or

delete tools as required.

Table 3-1 General tools

Appearance, Parameter, and Name

Flat-head

screwdriver

Phillips screwdriver Adjustable wrench Socket wrench

Hex key Open end torque

wrench

Diagonal pliers Wire stripper

Crimping tool Torch Knife Step ladder (2m)


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Electrostatic

discharge (ESD)

gloves

Polyvinyl chloride

insulation tape

Vacuum cleaner Steel wire brush

Multimeter Claw hammer N/A N/A

N/A N/A

Table 3-2 Transportation and unpacking tools


Diesel pallet

truck

Manual pallet truck N/A N/A

N/A N/A

Table 3-3 Pipe installation tools


Nitrogen Pressure gauge Fluorine hose R22 Heat gun

Thread glue Reducing Valve N/A N/A


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N/A N/A

3.1.2 Material Preparations

Pipe Connection

There are two kinds of pipe connections for NetCol5000-C-FC, with liquid distribution unit

NetCol520 (NetCol520 for short) and without the NetCol520. Figure 3-1 shows the

NetCol5000-C-FC with the NetCol520 when pipes are routed from the bottom. Figure 3-2

shows the NetCol5000-C-FC with the NetCol520 when pipes are routed from the top. Figure

3-3 shows the NetCol5000-C-FC without the NetCol520 when pipes are routed from the

bottom and top.

It is recommended to close the inlet valve in the unit when there is chilled water circulation in

system and the unit is not in use.

Figure 3-1 Routing pipe from the bottom (with the NetCol520)

(1) Check valve (2) Y filters


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Figure 3-2 Routing pipe from the top (with the NetCol520)


Figure 3-3 Routing pipe from the bottom and top (without the NetCol520)



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Engineering Auxiliary Materials

Figure 3-4 shows the two methods of connecting inlet and outlet chilled water pipelines.

Figure 3-4 Connecting method A and B

(1) Reserved joint: 1 inch, BSPT, male

adapter

(2) Conversion adapter: in the delivered

fittings

(3) Hoop: in the delivered fittings (4) Hose

(5) Corrugated pipe (6) Adapter

(7) Ball valve: screw thread or flanges

connecting

(8) Stainless steel pipe

If the NetCol520 is configured, method A is recommended. If no, the method is based on onsite

situation.

Prepare the materials list in Table 3-4. Table 3-5 shows the cables preparations.

Table 3-4 Pipes preparations

Class Parts Specifications Remarks

Pipe Rubber

hose

DN25

Material media is water

(0°C to 70°C, without

icing) and glycol.

Material heat resistant

is –40°C to +100°C.

Working pressure is 12

bar, and burst pressure

is 48 bar.

Inner layer is oil

resistant synthetic

Not configured. Need

engineering purchasing if

method A in Figure 3-4 is

adopted.


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rubber. Insert layer is

one braided textile

insert. Outer layer is oil

resistant and

weatherproof synthetic

rubber.

Corrugated

pipe

The adapter is 1 inch BSPP

of female adapter. The

diameter and length are

recommended to be DN25

and 200 mm.



method B in Figure 3-4 is

adopted.

Corrugated

pipe

adapter

Matching the corrugated

pipe.




adopted.

Ball valve Matching the galvanized

steel pipe




adopted.

Water inlet

and outlet

pipes

Galvanized steel pipe,

DN25


engineering purchasing.

Forcible

drainpipes

Φ = 4 mm (outer diameter

Φ = 7 mm), length = 5 m

Mandatory, shipped with the

device.

Condensat

e

Drainpipes

Φ = 10 mm (outer diameter

Φ = 14 mm), length = 2 m

Mandatory, shipped with the

device.

Main

chilled

water

supply and

return

pipes

It is recommended that

welded steel pipes or

seamless steel pipes be

used as the main chilled

water supply and return

pipes, DN80.



Corrugated

pipe

DN80, length = 200 mm Not configured. Need


The main

condensate

drainpipe

(tee fitting)

Galvanized steel pipe

connectors are

recommended.



The main

condensate

drainpipe

(90°

elbow)

Galvanized steel pipe

connectors are

recommended.



90° elbows DN80, at least four 90 Not configured. Need


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for the

main

chilled

water

supply and

return

pipes

degree elbows are

purchased.


Pipe fixed Pipe

Support

For the specifications, see

Pipe Support Preparations.



Heat

insulation

pipe (for

rubber

hoses)

Determine the pipe

thickness based on the

water inlet temperature and

ambient temperature.



Heat

insulation

pipe (for

the main

condensate

drainpipe)

The inner pipe diameter is

25 mm and the thickness is

9.52 mm.



Adhesive

for heat

insulation

pipes

N/A Not configured. Need


Adhesive

tape for

heat

insulation

pipes

N/A Not configured. Need


Pipe

connector

sealing

adhesive

The sealant or seal tape

for screw threads must

be able to withstand

temperatures higher

than 85°C.

The sealant or seal tape

should apply to all pipe

material.

Anaerobic metal pipe

thread sealant with

polytetrafluorethylene

(PTFE for short) as the

filler.

Glycol solution

resistance, adapting to

the thread size with

pipeline.

Maximum seal gap is




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less than 0.5 mm.

The maximum pressure

is greater than 3 MPa.

Anaerobic

adhesive

Comply with fireproof and

environment protection

requirements.



DN80 heat

insulation

pipe

You can replace them with

heat insulation panels.



Flange and

gasket

DN80 Not configured. Need


Butterfly

valve

DN80, providing a

pressure withstand capacity

of over 2.0 MPa



Copper

gate valve

One for the main chilled

water supply pipe and one

for the main chilled water

return pipe, providing a

pressure withstand capacity

of over 2.0 MPa



Y-shaped

filter

Pressure withstand

capacity of over 2 MPa and

20 filter meshes

Not configured. Based on the

system design.

Copper

gate valve

N/A Not configured. Based on the

system design.

Pressure

gauge

Precision: 2.5

Ambient temperature:

–40°C to +70°C

Temperature influence: ≤

0.4%/10°C (operating

temperature: 20±5°C)

Pressure: between 1.2–2.5

MPa

Not configured. Based on the

system design.

Support For the specifications, see

Support Preparations.

Optional

Hose

clamp

D16 Not configured. Need


Table 3-5 Cables preparations

Cables Parameters Number Remarks


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Cables Parameters Number Remarks

Power cables Power cable, 450/750 V,

H07RN-F, 2.5 mm2, 3

cores color (including

PE cable), 25 A.

1 PCS Not configured.

Need engineering

purchasing.

OT terminal: blue M3

and M6

M3: 10 PCS

M6: 4 PCS

Mandatory,

shipped with the

device.

External circuit

breaker

Air-break switch,

230/400 V AC, 16 A,

2P, 6 KA, C character

1 PCS Not configured.

Need engineering

purchasing.

Voltage jumper N/A N/A Mandatory,

shipped with the

device.

Temperature and

humidity (T/H)

sensor

10 m 1 PCS Mandatory,

shipped with the

device. Other five

pieces (at most)

are optional.

Cable to the group

control networking

and host

10 m 1 PCS Mandatory,

shipped with the

device.

Pipe Support Preparations

Figure 3-5 shows the support for water pipes. Determine detailed specifications based on

onsite situation. Stainless steel 304 for pipe support and pipe clamp are recommended.

Figure 3-5 Pipeline support (unit: mm)

Height of the U-shaped clamp H = Pipe diameter (with thermal insulation foam) – 5 mm.

The pipe supports need engineering purchasing.


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Support Preparations

If water pipes need to be routed below the NetCol5000-C-FC, install a support under the

NetCol5000-C-FC for ease of pipe routing, Figure 3-6 shows the support specifications.

Figure 3-6 Support Specifications (unit: mm)

A support is optional, you can make it or buy it by yourself.

Make supports by referring the following recommendations:

1. Recommended to use angle steel, square steel or channel steel, and width is 45–60 mm,

thickness is 4–5 mm.

a. When the width of angle steel is less than 60 mm or equal, do not consider

avoiding.

b. When the width of angle steel is more than 60 mm, it is interfering with the holes

which routing cables, please cut out holes to avoid interfering.

2. The height of the support is more than 300 mm.

3. Please note that to control the welding process and avoid excessive error.

3.1.3 Structural Specifications

Figure 3-7 shows the structural specifications of the NetCol5000-C-FC.


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Figure 3-7 Structural specifications

(1) Door lock (2) Control panel (3) Front door

(4) Caster (5) Leveling foot (6) Side panel

(7) Rear door (8) Top outlet for power line

and PE line

(9) Top outlet for the signal cable and

forcible drainpipe

(10) Top water

outlet pipe

(11) Top water inlet pipe

3.2 Transportation and Unpacking

Prerequisites


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Only trained personnel are allowed to move the cabinet. Use a pallet truck to transport the

cabinet secured to a wooden support to the installation position. Insert the forks of the

pallet truck in the middle position to ensure balance.

When loading and unloading the cabinet, keep the gradient within 15 degrees, as shown in

Figure 3-8.

To prevent the cabinet from falling over, secure it to a pallet truck using ropes before

moving it.

To prevent shocks or falls, move the cabinet gently.

After placing the cabinet in the installation position, unpack it and take care to prevent

scratches. Keep the cabinet steady during unpacking.

Figure 3-8 Transportation Gradient

Context

To avoid damage during the transportation, remove the wooden case and pallets after the

device is moved most close to the installation position.

Procedure

Step 1 Visually inspect the outer packing for shipping damage. If any shipping damage is founded,

report it to the carrier immediately.

Step 2 Unpack the package, as shown in Figure 3-9.

1. Remove the straps.

2. Remove the top cover.

3. Remove external packing materials.

4. Remove cushioning materials.

5. Remove plastic materials.

6. Clear the surrounding impurities.


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Figure 3-9 Unpacking

Step 3 Check that the fittings comply with the packing list. If some fittings are missing or do not

comply with the packing list, record the information and contact your local Huawei

immediately.

----End

3.3 Checking Fittings

Table 3-6 shows the standard fittings of the NetCol5000-C-FC.

Table 3-6 Standard fittings

No. Item Quantity Description

1 Condensate

drainage

pump

1 PCS Spare parts model: CNM-9

2 Pipe

connector

adapter

2 PCS N/A

3 Cable tie 10 PCS N/A

4 Condensate

drainpipe

2 PCS Connection a self-drainage pipe: Length: 2 m,

internal diameter: 10 mm

5 Hoop 2 PCS N/A

6 Fan fuse 2 PCS Spare parts model: ADA005/0326005.MXP

7 Fuse in the 2 PCS Spare parts model: ADA.250/0326.250MXP


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No. Item Quantity Description

condensate

drainage

pump

8 Three-way

valve fuse

1 PCS Spare parts model:

BK1-S505H-1-R/UDE001/04770001.MXP

9 OT cord end

terminal

10 PCS Blue M3

10 OT cord end

terminal

4 PCS Blue M6

11 Air baffle 2 PCS N/A

12 Cascading

communicati

on cable

1 PCS Length: 10 m

13 Documentati

ons

2 PCS Chinese and English User Manuals

3.4 Installation Flowchart

Do not remove the protective plastic bag before installing the cabinet (during the construction

period such as decorating room), avoid dust generated by the construction process seriously

affect internal devices of the cabinet (such as water tray, water pump, float) functions.

Figure 3-10 shows the process for installing NetCol5000-C-FC.


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Figure 3-10 Installing flowchart


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3.5 Checking the Pressure

Prerequisites

Remove the doors and the air filters before checking pressure, and remove the side panel if

the site conditions is allowed.

Procedure

Step 1 Remove the cabinet doors.

Do not move the doors too far away from the cabinet. Otherwise, the cable connecting the

control panel and PE cable will be damaged.

1. Unlock the doors, and pull the doors outwards by using both hands.

2. Remove the cable from the control panel.

3. Push the doors upwards by using both hands until they are removed, as shown in Figure

3-11.

Figure 3-11 Removing the doors


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4. Remove the rear door by following Step 1.1 to Step 1.3.

Step 2 Remove the filters

1. Rotate the six baffle plates at the top, middle, and bottom to remove them from the filters,

as shown in Figure 3-12.

Figure 3-12 Removing the filters

2. Pull the rope to the filters outwards.

The side with a metal mesh is the internal side.

3. Take out the desiccant bag from behind the column in the lower right corner beside the

rear door.

Step 3 (Optional) Remove the two screws from the side panel using a Phillips screwdriver and then

push the side panel upwards by using both hands until it is removed.

Step 4 Remove the bonnets from the needle valve anticlockwise, as shown by 1 in Figure 3-13.

Step 5 Use the hose with 1/4 inch needle valve to connect to the needle valve, as shown by 2 in

Figure 3-13.

If air is exhausted from the needle valve indicating system is normal, remove the hose

and fasten the bonnets.

If no air is exhausted from the needle valve, contact Huawei technical support.


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Figure 3-13 Checking the pressure

----End

Follow-up Procedure

Check whether insulation cotton is securely pasted to internal pipes. The chilled water valve is

wrapped with insulation cotton without metal part exposed.

3.6 Remove the Securing Plate

Procedure

Step 1 Remove the eight screws from the securing plate, as shown in Figure 3-14.


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Figure 3-14 Removing the screws from the securing plate

Put away the four screws of securing the front and rear doors. They can be used to securing

the device to the support (if the support is configured).

Step 2 Use the wrench to raise the leveling feet until the casters touch the ground, as shown in Figure

3-15.

Figure 3-15 Raising the leveling feet

Step 3 Place a slide plate beside the securing plate.

Step 4 Push the NetCol5000-C-FC to the installation position along the slide plate as shown in

Figure 3-16.


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Take care to prevent the NetCol5000-C-FC from falling over.

Two people are required to hold the NetCol5000-C-FC on both sides and gently push it

towards the installation position.

Figure 3-16 Pushing the NetCol5000-C-FC

----End


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3.7 Exhausting Nitrogen

Context

Exhaust the nitrogen from the rear door, and you can remove the side panel to operate if the

site conditions are allowed.

Procedure

Step 1 Loosen the air exhaust valve to exhaust nitrogen, as shown in Figure 3-17.

Figure 3-17 Exhausting nitrogen

Step 2 Fasten the air exhaust valve until no air exhaust from the exhaust valve.

----End

3.8 Installing the Water Pipe Adapter

Context

Installing the water pipe adapter for pipes routed from the bottom is similar to installing it

from the top, give the top installation for an example.

When removing the plug, do not touch the plug directly to prevent being burned.


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Procedure

Step 1 Removing the plug for the pipe routed from the top.

1. Use a heat gun to heat the screw threads for about 10 minutes, keeping the gun two

centimeters away from the screw threads, until the thread rubber softens.

2. When removing a plug, use one adjustable wrench to hold the bolt firmly, and use

another to loosen the plug, as shown in Figure 3-18.

Figure 3-18 Removing the plug for the pipe routed from the top

(1) Water outlet (2) Water inlet

3. Remove residues from the screw threads using a steel brush and then clear the screw

threads. Ensure that the residues do not fall into the water pan.

Step 2 Install the water pipe adapter. Apply seal adhesive to the joint of external screw threads and

install the water pipe adapter for the inlet pipe and outlet pipe in sequence, as shown in Figure

3-19.


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Figure 3-19 Installing the water pipe adapter

----End

3.9 Adjusting Balance and Fastening

Prerequisites If a support is needed, make the support as Figure 3-6 shows. If not, ignore the support

part.

NetCol5000-C-FC has been transported to the destination.

Procedure

Step 1 Secure the support onto the ground by using four M10x12 expansion bolts.

Step 2 Place the NetCol5000-C-FC on the support and align with the support mounting holes.

Step 3 Use the wrench to adjust the feet by using a measuring tape and level, keep the feet touch the

ground after leveling.

Make sure the parallel mounting holes in the NetCol5000–C-FC are aligned with those in the server

cabinets.

Step 4 Align the tapped hole, and secure the NetCol5000-C-FC onto the support by using bolts that

removed on removing the screws from the securing plate, as shown in Figure 3-20.


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Figure 3-20 Securing the NetCol5000-C-FC onto a support

----End

3.10 Connecting the NetCol5000-C-FC with a Server Cabinet in Parallel

Prerequisites

Make sure the water pipe adaptors have been installed. Because it is difficult to maintain after

combining the cabinet.

Procedure

Step 1 Reinstall the side panel by referring to 3.5 Checking the Pressure. If the side panel is not

removed, skip this step.

Step 2 Remove the lower screws from the two connecting plates.

Step 3 Secure the lower screws to a server cabinet to connect the NetCol5000-C-FC with the server

cabinet in parallel.

----End


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3.11 Connecting the Condensate Drainpipes

3.11.1 Connecting the Condensate Drainpipes (Routing from the top)

Prerequisites

Do not over bend the drainpipe when securing the drainpipe. Use the heat insulation cotton

to wrap the pipes after the connection.

Check that hoses at two ends of the condensate pump and hose to the three-way connector

T-junction valve are securely installed.

Procedure

Step 1 Loosen the drainpipe tie, and route the drainpipe from the right posts of the rear door to the

top, as shown in Figure 3-21.


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Figure 3-21 Securing condensate drainpipes

Step 2 Pull the drainpipe out from the top main water pipe outlet, and secure the drainpipe on the

post using the fasteners and cable ties.

----End

3.11.2 Connecting the Condensate Drainpipes (Routing from the bottom)

Prerequisites


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Do not over bend the drainpipe when securing the drainpipe. Use the heat insulation cotton

to wrap the pipes after the connection.

Check that hoses at two ends of the condensate pump and hose to the three-way connector

T-junction valve are securely installed.

Procedure

Step 1 Secure the drainpipe at the position shown in Figure 3-22 and route the drainpipe out the

cabinet from the bottom condensate water pipe outlet.

Figure 3-22 Securing condensate drainpipes

Step 2 Connect the condensate water pipe to the condensate drainpipe port in the equipment room.

----End

3.11.3 Connecting the Condensate Self-drainpipe

Prerequisites

If drainage ports exist onsite, connect the self-drainage port to the condensate self-drainpipe.

Procedure

Step 1 Loosen the bolt plug and remove the waterproof washer, as shown in Figure 3-23.


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Figure 3-23 Connecting the condensate self-drainpipe

Step 2 Connect the self-drainpipe to the pagoda connector.

Step 3 Install and secure the hose clamp.

Prepare the hose clamp match with the diameter of self-drainpipe is Φ=14 mm.

----End

Follow-up Procedure

When connecting the condensate drainpipe and self-drainpipe to the main drainpipe, connect

the pipes by using cable ties and fasten them with adhesive tape. Figure 3-24 shows the way

how to connect them.

Figure 3-24 Fastening pipes


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An angle about 45 degree is suggested to keep from the main drainpipe to the floor. It can ensure

smoothly flowing and avoid banding.

If DN25 is adopted for the main drainpipe, two condensate pipes could not be insert at the same time.

A adapter is needed to connect to the mouth of main drainpipe.

3.12 Connecting the Water Inlet or Outlet Pipes

Prerequisites

Install a Y filter on the chilled water inlet.

Context

Connect the water inlet or outlet pipes from inside to the outside and from the top to the

bottom. Routed it from the bottom is similar to the top, give the top routed and method A in

Figure 3-4 for an example.

Procedure

Step 1 Wrap the water inlet or outlet pipes with insulation cotton.

Step 2 Cut a cross shape hole on the glue circle and route the water pipe through the glue circle.

Figure 3-25 shows how to connect water inlet and outlet pipes.

Figure 3-25 Connecting the water inlet or outlet pipes

Step 3 Wrap the water pipes with insulation cotton.


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1. When connecting the water pipes, apply lubricant, such as soap water around the water pipe adapter.

2. Before wrapping the water pipe with insulation cotton, hold one end of the insulation cotton and

pour soap water to the insulation cotton. Hold the other end of the insulation cotton, and shake the

insulation cotton back and forth to dump unnecessary soap water. Then wrap the water pipe with

insulation cotton.

3. When wrapping the water pipes with insulation cotton, apply glue to the surface of joints evenly.

After the water pipes are wrapped with insulation cotton, press the joints at both sides by using your

thumb to ensure that the joints are securely connected. Apply glue to the two ends of the insulation

cotton to seal the pipe. The glue width at two ends must be greater than the thickness of the

insulation cotton.

----End

3.13 Injecting Nitrogen

Prerequisites

Injecting nitrogen required after pipes of the NetCol5000-C-FC are connected.

Procedure

Step 1 Close the air exhaust valve of the NetCol5000-C-FC.

Step 2 Connect any needle valve of a NetCol5000-C-FC to the pressure gauge and blow 0.8 MPa

(stable up to 0.8 MPa) nitrogen to other needle valves of the NetCol5000-C-FC.

Step 3 After 24 hours, check whether the pressure decreases. If no, the pipes do not leak.

----End

3.14 Filling water to exhausting air

Prerequisites

Before exhausting the air, exhaust nitrogen used for stabilizing the pressure. For details, see

3.7 Exhausting Nitrogen.

Procedure

Step 1 Rotate the chilled water valve to the maximum openness.

Press down the button on the left when adjusting the handle.


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Figure 3-26 Chilled water valve

Step 2 Open the general water supply valve of the NetCol5000-C-FC.

Step 3 Open the air exhaust valve to exhaust the air and chilled water, as shown in Figure 3-17.

Step 4 Adjust the air exhausting speed until no bubbles flows out the hose.

Step 5 Rotate the chilled water valve to the right after exhausting the air.

Step 6 Close the air exhaust valve.

----End

3.15 Cable Connections

3.15.1 Cable Connection and Precautions

Cable Connection

The following cables are to be connected onsite:

Power cables to the indoor unit

Cables to the voltage jumper

Cables to the humidity and temperature sensor (H/T sensor for short)

Communication cables to the indoor unit

PE cables


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Precautions Connections of all power cables, control cables, and ground cables must comply with the

local electrical code, and the cable specifications should comply with the local cabling

specifications.

For details about the maximum current, see the NetCol5000-C-FC nameplate.

The voltage and frequency of the primary power supply is rated voltage ±10% and rated

frequency ±2 Hz respectively.

Only trained and qualified personnel are allowed to connect cables.

Before connecting cables, use a voltmeter to measure the input voltage and ensure that

the power supply is off.

All the NetCol5000-C-FCs should be safely grounded before powering on.

Keep cables away from the compressors, fans, and floats (otherwise, take protective

measures), and cables should be securely connected.

3.15.2 Electrical Ports of an Indoor Unit

Loosen screws on the cover of the electrical control box from the rear door and remove the

cover. Figure 3-27 shows the cables terminals of the electrical control box.

Figure 3-27 Electrical ports

(1) Port for the humidity and

temperature sensor J128

(2) LCD

communication port J72

(3) J73 group control

communications port

(4) Voltage jumper port (5) Ground PE port (6) AC Power input port

X200


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(7) AC Power input port X100

Single power supply: X200 is the power input port.

Dual power supply: The primary power supply connects to the X100 port, and the

secondary power supply connects to the X200 port.

3.15.3 Connecting Power Cables

Prerequisites

Measure the voltage is less than 1 V between wires by using multimeter before connecting

power cables.

Context

The power cable mode support to route from the top or bottom, you can choose according to

the site conditions.

Procedure

Step 1 Take out the M3 OT terminals from the fitting bag, crimp the 2.5 mm2 and the OT terminals

by using crimping tool, as shown in Figure 3-28.

Crimp the cables firmly, and do not loose after pulling.

If the cable is not recommended specifications, you need to prepare the OT terminals by

yourself.

Figure 3-28 Making cables

(A) Cable core (B) Cable (C) Heat shrink tubing (D) OT terminal


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If the OT terminal is insulating, only perform the 1, 2, and 3 as shown in Figure 3-28.

Step 2 Remove the transparent plastic cover of the terminal block, connect the OT terminals to the

power cables to L1 and N as shown in Figure 3-29.

Single power supply: X200 is the power input port.

Dual power supply: The primary power supply connects to the X100 port, and the

secondary power supply connects to the X200 port.

Figure 3-29 Connecting power cables

Step 3 Check whether exists a short circuit between L1 and N by multimeter.

Step 4 Cover the plastic cover after connecting power cables.

----End

3.15.4 Connecting the Voltage Jumper


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Before connecting the voltage jumper, verify that the voltage jumper matches the mains

voltage.

Ensure that the voltage labeled on the voltage jumper is the same as of the local power supply.

Then connect the two voltage jumpers. Figure 3-30 shows the voltage jumpers. 4 in Figure

3-27 shows the interconnection position.

Figure 3-30 Voltage jumper

3.15.5 Installing the T/H Sensor

Context If no outside T/H sensor is configured, the inside one is proper to work without setting

dual in-line package (DIP) switches. Pull it out of the cabinet as Figure 3-31 shows and

put it in the measuring position if you need to measure the temperature and humidity

outside the cabinet.


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Figure 3-31 Removing the humidity and temperature sensor

If one more T/H sensors are configured, you need to connect cables to the sensors and set

DIP switches for the sensor. Figure 3-32 shows a T/H sensor.

Figure 3-32 T/H sensor

Procedure

Step 1 Connect the RS485_OUT of the upstream sensor to RS485_IN of the downstream sensor.

Figure 3-33 shows cable connection of T/H sensors.


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Figure 3-33 Cables routed outside the cabinet

The cable between the main control board and the T/H sensor is 10 m long, which is tied with cable

tie and installed at the server air intake vent and about 1.5 m above the ground.

A maximum of three T/H sensors can be connected in hot and cold aisle respectively.

Step 2 Set DIP switches of the T/H sensor, Table 3-7 lists how to set.

Table 3-7 DIP switches of the T/H sensor

Position

Name NO.1 NO.2 NO.3 NO.4 NO.5 NO.6

Cold

aisle

Humidity

and

temperat

ure

sensor 1

at the

cold aisle

ON ON OFF ON OFF OFF

Humidity

and

temperat

OFF OFF ON ON OFF OFF


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Position

Name NO.1 NO.2 NO.3 NO.4 NO.5 NO.6

ure

sensor 2

at the

cold aisle

Humidity

and

temperat

ure

sensor 3

at the

cold aisle

ON OFF ON ON OFF OFF

Hot

aisle

Humidity

and

temperat

ure

sensor 1

at the hot

aisle

ON OFF ON OFF ON OFF

Humidity

and

temperat

ure

sensor 2

at the hot

aisle

OFF ON ON OFF ON OFF

Humidity

and

temperat

ure

sensor 3

at the hot

aisle

ON ON ON OFF ON OFF

By default, the DIP switches from 1 to 6 of a T/H sensor provided by Huawei are ON, OFF, OFF,

OFF, OFF, OFF.

No DIP switch operation is required for the last RS485_R port and keep the default status OFF.

After setting communications addresses for T/H sensors, choose Settings > System Settings > T/H

Sensor on the main menu and enable the T/H sensor in the aisle. Otherwise, the sensor does not

work.

----End

3.15.6 Teamwork Networking and Monitoring

To implement teamwork networking and monitoring, you need to connect communications

cables and set the DIP switch on the main control board.


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Context

J73 teamwork networking ports J73UP and J73DOWN (as shown in Figure 3-34) on one side

of the electrical control box enable CAN group control networking communication between

smart cooling products, and communication between smart cooling products and the customer

monitoring system connecting over the RS485 bus.

Figure 3-34 shows positions of DIP switches on the main control board.

Figure 3-34 DIP switch position

(1) Teamwork communications ports J73UP and

J73DOWN

(2) DIP switches on the main

control board

(3) J127 FE port (reserved)

Procedure

Step 1 Connect the networked smart cooling product, as shown in Figure 3-35.

1. When only teamwork networking is deployed, reserve J73UP on the first unit, connect

J73DOWN of the unit to J73UP of the second unit, J73DOWN of the second unit to

J73UP of the third unit. In this way, connect all units involved in teamwork networking,

as shown by CAN bus in Figure 3-35.

2. When both teamwork networking and RS485 monitoring are deployed, connect COM1

of the first unit or COM2 of the last unit to the host over RS485, as shown by RS485 bus

in Figure 3-35.


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Figure 3-35 Network diagram for teamwork communication and monitoring

The number of smart cooling products in the preceding figure is less than or equal to 32.

You can obtain the communications cables from Huawei or prepare them by yourself.

Use shielded communications cables. The external shield layer should be grounded rigorously. The

two RJ45 connectors connect to each other over the parallel network cables.

The monitoring devices should be rigorously grounded. If three-wire power cables are used,

ensure that the three-pin power socket is rigorously grounded.

Step 2 Set DIP switches on the main control board, as shown in Table 3-8.

Set the position of switch 7 onsite based on the application scenarios and ensure that other

DIP switches are in the default position, as shown in Table 3-8.

Table 3-8 Operation of the switches on the main control board

Switch

Default Value Description

1 OFF Remaining in OFF.


3 ON Remaining in ON.


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Switch

Default Value Description




7 OFF When teamwork mode is not deployed, remain in OFF.

When teamwork mode is deployed, toggle switches on the main control

boards of the first and last units (such as smart cooling product 1 and

smart cooling product n shown in Figure 3-35) to ON and other remains in

OFF.


----End

3.15.7 Connecting Ground Cables

Do not connect the ground cable to equipotential position as shown by 2 in Figure 3-36.

Connect grounded cables to the equipotential position 1 in the cabinet or route the PE cable

from the hole at the bottom of the cabinet and connect the cable to the grounded system, as

shown in Figure 3-36.


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Figure 3-36 Connecting the ground cable

(1) Equipotential position 1 (2) Equipotential position 2

3.16 Checking After Installation

1. Check the drainpipes are securely installed, clear, free of leakage and not over bent.

2. Wrap the chilled water connector with heat insulation cotton tightly.

3. Check that the floats are leveled without cables and insulation cotton affecting float

operation. Cables are securely bound and not on the water pan.

4. Check that the differential pressure transparent hose in the internal side of the column of

the rear door is securely connected and not squashed.

5. Check that the distance between two chilled water pipes outside the cabinet is longer

than 25 mm, the hose is securely wrapped with insulation cotton, junctions are secured

by using glue.

6. Check that the pipe lines have completed pressure preservation and air tightness test.

7. Check that the cabinet is grounded (the ground cable need to be connected to the ground

bar directly in the equipment room).

8. Check that the power cable is connected properly, and the cable is fixed securely.


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User Manual (Full Configuration) 4 Power-On Commissioning


4 Power-On Commissioning

4.1 Commissioning Preparations

Keep clear the dust and dirt position of the cabinet before the device start running, any dirty

position and foreign body in the water pan may cause pump congestion and poor drainage will

seriously affect the operation of the equipment.

1. All power parameters are the same as those specified in the nameplates, and power

cables are correctly connected.

2. Ensure that the active and standby power cables are correctly and securely connected.

4.2 Setting Parameter

4.2.1 Powering On the NetCol5000-C-FC

Prerequisites

Check the 1 to 4 circuit breakers on Figure 4-1 are switched off.

Context

Before commissioning the NetCol5000-C-FC, learn about the functions and positions of

circuit breakers. Figure 4-1 shows the positions of the circuit breakers.


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Figure 4-1 Circuit breakers

(1) Circuit breaker of the primary circuit (2) Circuit breaker of the secondary

circuit

(3) Circuit breaker controlling contactor

handover

(4) Circuit breaker controlling loops

Procedure

Step 1 Measure the input power voltage is within the normal operating range by using multimeter

after powering on the front-end.

Step 2 Sequentially switch on the 1 to 4 circuit breakers.

Circuit breakers 1 to 4 are powered on in sequence and powered off in an inverse order.

----End

4.2.2 Commissioning Procedure

Context


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If alarms generate during the procedure, see 6.2 Alarm Reference to deal with them.

User are classified into Admin, Engineer, Operator, and Guest users. The Admin user

has the highest permission, followed by the Engineer, Operator and Guest users. The

preset passwords for the Admin, Engineer, and Operator are all 000001. Enter the

Diagnostic Mode in Admin or Engineer. For system security purposes, please change the

preset password after first login. For details, see 5.11.1 User Settings.

Procedure

Step 1 Power on the NetCol5000-C-FC and switch on all circuit breakers in sequence.

Step 2 When the NetCol5000-C-FC is powered on for the first time, the screen will display an

information to enquiry you if the voltage is consistent with the mains, if yes to continue, else

to contact Huawei technical support.

Step 3 After the main menu is displayed on the LCD, tap the start button to power on the

NetCol5000-C-FC.

Step 4 Choose Settings > System Settings > T/H Sensor and set the corresponding aisle sensors to

Enable.

Step 5 Check whether alarms are generated after the NetCol5000-C-FC is running for about 3

minutes.

If alarms are generated, identify the causes and clear the alarms by following the

instructions provided in 6.2 Alarm Reference.

If no alarm is generated, choose Running > Device Details > T/H Sensor referring to

5.9.3 Device Details to query the water inlet and outlet temperature. If the water inlet

temperature is 4°C higher than the water outlet temperature, check whether the water

inlet and outlet pipes are correctly connected. If yes, check whether the water inlet and

outlet temperature sensors are correctly connected. If not, connect the water inlet and

outlet temperature sensors correctly.

Step 6 Choose Maint > Diagnostic Mode referring to 5.13.1 Diagnostic Mode, and set Indoor fan

to maximum, which is 30% by default. Check whether any alarm is generated. If alarms are

generated, identify the causes and clear the alarms by following the instructions provided in

6.2 Alarm Reference.

Step 7 Set the opening of the chilled water valve to 100%. The handle of the chilled water valve

should be rotated to the maximum value automatically. If the handle cannot be rotated to the

maximum openness, see chilled water valve-related contents in 6.3 Troubleshooting.

Step 8 Enter Running > Device Details > Drain Device by referring to 5.9.3 Device Details and

raise the low float for 5 seconds to start water pump 1 or 2. If no water pump is started, rectify

the fault by following the instructions provided in 6.3 Troubleshooting. Drop the low float

and raise the high float for 5 seconds to start both water pumps 1 and 2, the Abnormal

drainage alarm appeared, rectify the fault by following the instructions provided in 6.2 Alarm

Reference. If no water pump is started or only one water pump is started, rectify the fault by

following the instructions provided in 6.3 Troubleshooting.

Step 9 Exit diagnostic mode, for other parameters settings see 5 Controller Operate Guide.

Step 10 Make sure that equipment running trouble-free for more than 30 minutes after commissioning.

----End


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Follow-up Procedure

If the NetCol5000-C-FC drains water from the top and the ambient dew-point temperature

exceeds the upper threshold, the following symptoms occur:

1. When the NetCol5000-C-FC is running, a large amount of condensate water is generated

and the float floats, then condensate pump works.

2. The speed of generating condensate water is faster than the drainage speed of the water

pump. The high float floats, the full water alarm is generated, and the drain abnormal

alarm may be generated. In this case, the NetCol5000-C-FC shuts down the fan and

chilled water valve to enter standby mode.

3. The water pump drain condensate water until the high float drops. The

NetCol5000-C-FC restarts.

4. If the equipment room is overhumidity, steps 1 to 3 are repeatedly performed until the

humidity in the equipment room within the acceptable range, as shown in Figure 4-2.

Figure 4-2 Acceptable humidity in the equipment room

4.3 Follow-up Procedure

1. Install the electrical control box cover.

2. Install the air filters. For details, see removing filters in 3.5 Checking the Pressure.

3. Install the cabinet doors and lock the doors. For details, see removing doors in 3.5

Checking the Pressure.


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User Manual (Full Configuration) 5 Controller Operate Guide


5 Controller Operate Guide

5.1 LCD

The NetCol5000-C has a 7-inch true color touch-sensitive LCD that provides a user-friendly

interface for you to perform query, settings, monitoring, and maintenance. The LCD backlight

automatically turns off if no operation is performed on the LCD in 3 minutes.

5.2 First Power-On

When the NetCol5000-C is powered on for the first time, the LCD displays the Basic Settings

screen. Configure parameters based on instructions, such as Language, Date, Time, Time

Zone, Monitoring mode. For detailed configuration steps, see 5.11.5 Basic Settings.

If you need to change temperature and humidity settings after first power-on, tap Settings >

System Settings, and then choose the T/H Sensor. If the teamwork mode is used, you are

required to configure related parameters for each NetCol5000-C. For details, see 5.12

Teamwork Settings.

5.3 Startup Screen

After the NetCol5000-C-FC is powered on, the startup screen is displayed, as shown in Figure

5-1. When the NetCol5000-C-FC is powered on for the first time, the LCD displays the Basic

Settings screen after the startup screen after the startup screen.


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Figure 5-1 Startup screen

5.4 Indicator

The indicator on the panel displays operating status of the NetCol5000-C-FC. Figure 5-2

shows the location of the indicator. Table 5-1 lists status of the indicator. If multiple alarms

are generated, the indicator enters the state that represents the most severe alarm.

Figure 5-2 Location of the indicator

(1) Indicator (2) Screen

Table 5-1 Status of the indicator

Indicator Status

Green The device is operating properly, or a

warning alarm occurs.

Yellow A major alarm occurs.

Red A critical alarm occurs.


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The following describes status of the buzzer when different alarms are generated:

Critical alarms: The buzzer is beeping.

Major alarms: The buzzer beeps intermittently every 500 ms.

Warning alarms or no alarms: The buzzer is silent.

5.5 Home screen

After the progress bar in the startup screen is full, the NetCol5000-C-FC enters the home

screen, as shown in Figure 5-3. You can tap the menu items, buttons, or icons on the screen to

enter related screens or perform operations.

Figure 5-3 Home screen

The following describes the icons on the home screen:

The uppermost bar is the status bar, under which is the alarm bar.

You can tap in the status bar to quickly mute the buzzer. Or, you can tap

in the alarm bar to enter the active alarm screen to mute the buzzer. If

you are already in the alarm screen, the buzzer cannot be muted even if you tap

. is changed to after the buzzer is muted.

You can tap in the alarm bar to enter the active alarm screen that

displays all active alarms.

in the status bar indicates that the display panel communicates properly with the main

control board. If is displayed in this position in the status bar, the communication fails.


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5.6 Start and Shutdown

Tap the Start or Shutdown buttons on the home screen to start or shutdown the

NetCol5000-C-FC.

Tap Start or Shutdown on the home screen. A warning is displayed, indicating whether to

start or shutdown the NetCol5000-C-FC, as shown in Figure 5-4 and Figure 5-5. Tap Yes. If

the device is successfully started, the system displays a message, indicating that the command

is successfully triggered.

If a power failure occurs and the NetCol5000-C-FC is powered on again, the

NetCol5000-C-FC automatically restores to the original state (start or shutdown) before the

power failure.

Figure 5-4 Starting the NetCol5000-C-FC

Figure 5-5 Shutdown the NetCol5000-C-FC


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5.7 Temperature and Humidity Curves

The T/H Curve screen displays temperature and humidity curves showing the recent

temperature and humidity changes. You can choose to display the curves in recent one hour,

one day, seven days, or 30 days.

Tap T/H Curve on the home screen to enter the T/H Curve screen, as shown in Figure 5-6.

The temperature curve (upper) and the humidity curve (lower) are displayed on the same screen. The

Temp set point is the midpoint temperature on the upper ordinate while the humidity set point is the

midpoint humidity on the lower ordinate.

Temperature and humidity curves show the average temperature and humidity of the current control

type.

You can zoom in or out the range of the temperature and humidity ordinate. The midpoint

temperature is the Temp set point of the T/H control type and the midpoint humidity is the humidity

set point of the T/H control type after the ordinate range is zoomed in or out.

The sampling period of the temperature and humidity varies according to the selected time. If the

temperature and humidity curve in the latest 1 hour is required, temperature and humidity data is

collected every 6 seconds. If the temperature and humidity curve in the latest one day is required,

temperature and humidity data is collected every 4 minutes. If the temperature and humidity curve in

the latest seven days is required, temperature and humidity data is collected every 30 minutes. If the

temperature and humidity curve in the latest 30 days is required, temperature and humidity data is

collected every 60 minutes.

You can view the temperatures from (temp set point -3°C) to (temp set point +3°C) at least and from

(temp set point -30°C) to (temp set point +30°C) at most.

You can view the humidity from (humidity set point -5%) to (humidity set point +5%) at least, and

from (humidity set point -50%) to (humidity set point +50%) at most.

Figure 5-6 T/H Curve

5.8 Common Functions

The Common Functions screen displays Status, Operating Info, and Query Hist. Alarms.

Tap Common Functions on the home screen to enter the Common Functions screen, as



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Figure 5-7 Common Functions

5.8.1 Status

On the Status screen, you can query operating status of the smart cooling product system,

including chilled water (CW) valve, indoor fan, condensate pump, remote on/off, and element

management system (EMS).

Tap Common Functions > Status on the home screen to enter the Status screen, as shown in

Figure 5-8.

The system on or EMS on function is available only when the remote dry contact is on the status of

system on (The remote dry contact does not connect to anything).

Figure 5-8 Status

5.8.2 Operating Info

The Operating Info screen displays the current detected temperature, humidity, voltage, dew

point temp, and anti-cond protection.


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Tap Common Functions > Operating Info on the home screen to enter the Operating Info

screen, as shown in Figure 5-9.

Figure 5-9 Operating Info

5.8.3 Query Historical Alarms

The Query Hist. Alarms screen can display a maximum of 500 historical alarms.

Tap Common Functions > Query Hist. Alarms on the home screen to enter the Query Hist.

Alarms screen, as shown in Figure 5-10.

Historical alarms are displayed based on the time when they are cleared. Alarms that are cleared most

recently are displayed at the top.

Figure 5-10 History Alarm


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5.9 Running

On the Running screen, you can query the operating status, system information, and device

list.

Tap Running on the home screen to enter the Running screen, as shown in Figure 5-11.

Figure 5-11 Running

5.9.1 Status

On the Status screen, you can query operating status of the smart cooling product system,

including CW valve, indoor fan, cond pump, remote on/off, and EMS.

Tap Running > Status on the home screen to enter screen as shown in Figure 5-8.

5.9.2 System Information

On the system information screen, you can query the temperature, humidity, voltage, dew

point temp, and anti-cond protection of NetCol5000-C-FC.

Tap Running > System Info on the home screen to enter the system information screen, as


5.9.3 Device Details

On the device Details screen, you can query names and operating status of components of the

NetCol5000-C, including T/H sensor, CW valve, indoor fan, drain device.

Tap Running > Device Details on the home screen to enter the device details screen, as



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Figure 5-12 Device details screen

You can tap buttons on the device details screen to query operating status of related devices.

Take cond pump as an example. To query running status of drain device, tap Running >

Device Details > Drain Device on the home screen. Figure 5-13 shows the running status of

cond pump 1, 2, low float, and high float.

Figure 5-13 Screen displaying operating status of drain device

The above takes the cond pump as an example to show the numbering rule for devices. Assume that the

personnel face the temperature control equipment. Cond pump on the left of the personnel is numbered 1

and that on the right of the personnel is numbered 2. This rule applies to other devices as well.

5.10 Alarms

On the Alarms screen, you can query active alarms, query hist alarms and delete hist alarms.

Tap Alarms on the home screen to enter the Alarms screen, as shown in Figure 5-14.


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Figure 5-14 Alarms

5.10.1 Query Active Alarms

The query active alarms screen displays active alarms.

Tap Alarms > Query Act. Alarms on the home screen to enter the active alarms screen, as


Active alarms are displayed based on the time when they are generated. Alarms that are generated

most recently are displayed on the top, followed by alarms that are generated earlier.

If active alarms exist, they are displayed on the alarm bar one by one.

On the query active alarms screen you can manually delete the alarms, such as CW valve abnormal

feedback, No refrig output, and Drain abnormal.

You can query an alarm on the alarm list based on the alarm identity (ID) to view causes of the alarm

and methods used to clear the alarm.

Figure 5-15 Active alarm screen


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5.10.2 Query Historical Alarms

The Query Hist. Alarms screen displays historical alarms. A maximum of 500 historical

alarms (200 critical alarms, 200 major alarms, and 100 warning alarms) can be displayed.

Tap Alarms > Query Hist. Alarms to enter the Query Hist. Alarms screen, as shown in

Figure 5-16.

Figure 5-16 Query Hist. Alarms

5.10.3 Delete Historical Alarms

The alarm deletion function supports one-click deletion of historical alarms.

Tap Alarms > Delete Hist. Alarms to enter the following screen, as shown in Figure 5-17.

If you need to delete alarms, log in as the Admin user.

Tap Delete Hist. Alarms. A dialog box is displayed, showing Are you sure you want to delete all

historical alarms?. Tap Yes to delete all historical alarms.

Figure 5-17 Deleting alarms


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5.11 Settings

Before configuring the system, you need to enter the user name and password on the screen

for logging in to the Settings screen, as shown in Figure 5-18. The system then authenticates

your user permission.

The Settings screen displays User Settings, Comm Settings, Alarm Settings, System

Settings, Basic Settings, and Restore Defaults buttons.

Tap Settings to enter the Settings screen, as shown in Figure 5-19.

The Guest user can only query parameters on screens. If you need to configure parameters, log in as

other types of users.

Take cond pump 1 exceed runtime as an example, tap Settings > Alarm Settings > Drain Device

enter the screen as show in Figure 5-20, select the cond pump 1 exceed runtime and put the

parameters.

When configuring the temperature and humidity parameters or other parameters, do not place the

cursor between the decimal point and the following digit of the value. Otherwise, the decimal point

cannot be deleted, and the parameter value fails to be configured.

After parameters are configured, tap to exit the screen.

Figure 5-18 Screen for logging in to the settings screen


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Figure 5-19 Settings

Figure 5-20 Drain device

Figure 5-21 Cond pump 1 exceed runtime


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5.11.1 User Settings

Settings Screen

On the user settings screen, you can configure the language, time, and password for the

system, and set the contrast, saturation, and brightness for the LCD.

Tap Settings > User Settings on the home screen to enter the user settings screen, as shown

in Figure 5-22.

Tap items on the user settings screen to configure parameters and query the value range of

parameters.

To perform user settings, log in as the Operator user or other types of users that have higher permission.

Figure 5-22 User settings screen

Changing Password

Tap Password to enter the password setting screen as shown in Figure 5-23.

The user changes only the password for the current user name. The password must be a string of six

digits. Letters and special characters are not supported.


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Figure 5-23 Password setting screen

Enter the old password, and tap to enter the new password setting

screen, follow the prompts to enter a new password in order.

5.11.1.1 Setting User Parameters

On the user settings screen, you can configure the language, time, and password for the

system, and set the contrast, saturation, and brightness for the LCD.

Tap Settings > User Settings on the home screen to enter the user settings screen, as shown

in Figure 5-24.

Tap items on the user settings screen to configure parameters and query the value range of

parameters.

To perform user settings, log in as the Operator user or other types of users that have higher

permission.

The user changes only the password for the current user name. The password must be a string of six

digits. Letters and special characters are not supported.


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Figure 5-24 User settings screen

5.11.1.2 Restore the Default Password

Context

If a user forgets the changed password, the user can use the DIP switch S2 on the main control

board to restore the password to the default password.

After password restoration is performed, passwords of all users are restored to default ones.

Other users may be affected. Therefore, exercise caution when performing password

restoration.

To ensure device security, operate the DIP switch after powering off the main power

supply of the device.

Procedure

Step 1 Disconnect the main power supply of the device.

Step 2 Set bits 1 and 3 of the DIP switch S2 to ON, and other bits to OFF. Figure 5-25 shows

positions of DIP switches on the main control board.


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Figure 5-25 DIP switch position

Step 3 Connect the main power supply of the device.

Wait 30 seconds. All user passwords are restored to the default ones.

Step 4 Disconnect the main power supply of the device.

Step 5 Set all bits of the DIP switch S2 to OFF.

Step 6 Connect the main power supply of the device.

----End

5.11.2 Communications Settings

On the communications settings screen, you can configure the protocol type, baud rate, and

communication address.

Tap Settings > Comm Settings on the home screen to enter the communications settings


Tap items on the communications settings screen to configure parameters and query the value

range of parameters.

Communications settings define parameters for communication with the northbound devices (the

EMS for example).

You can select only Modbus for Protocol. You can select from 9600, and 19200 for Baud rate. The

value of Comm address ranges from 1 to 255.

The Baud rate and communication address of a single device must be same as that of the EMS.

Communication addresses of two devices must be different.

To perform communications settings, log in as the Operator user or other types of users that have

higher permission.


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Figure 5-26 Communications settings screen

5.11.3 Alarm Settings

On the alarm settings screen, you can configure alarms for the T/H sensor, main board, CW

valve, indoor fan, drain device, and cooling system.

Tap Settings > Alarm Settings on the home screen to enter the alarm settings screen, as


Alarm settings including choosing the action for the alarm. The action for the alarms include

allow, block and disallow.

If alarms are allowed, they can be reported to the EMS. Active alarms are displayed on

the LCD and the system performs related protection actions.

If alarms are blocked, new alarms cannot be reported to the EMS. However, the EMS

can detect alarms that are generated before alarms are blocked. Active alarms are

displayed on the LCD and the system performs related protection actions.

If alarms are disallowed, they are not detected and no protection actions are performed.

If you need to change alarm settings, log in as Admin or Engineer users. Other types of users can only

query alarm parameters.


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Figure 5-27 Alarm settings screen

Be careful when configuring alarms. Only professional maintenance personnel can change

alarm settings.

You can tap buttons for related devices on the alarm settings screen to configure alarm

parameters.

The following describes how to configure alarms by taking the configuration of T/H sensor as

an example. Tap Settings > Alarm Settings > T/H Sensor on the home screen to enter T/H

sensor screen, as shown in Figure 5-28.

The supply-air high temperature (HT) alarm threshold plus 5°C cannot be greater than the return-air

HT alarm threshold.

The supply-air HT alarm threshold plus 5°C cannot be greater than the hot aisle HT alarm threshold.

The cold aisle HT alarm threshold plus 5°C cannot be greater than the hot aisle HT alarm threshold.

The cold aisle HT alarm threshold plus 5°C cannot be greater than the return air HT alarm threshold.

The supply-air low temperature (LT) alarm threshold plus 5°C cannot be greater than the return-air

LT alarm threshold.

The supply-air LT alarm threshold plus 5°C cannot be greater than the hot aisle LT alarm threshold.

The cold aisle LT alarm threshold plus 5°C cannot be greater than the hot aisle LT alarm threshold.

The cold aisle LT alarm threshold plus 5°C cannot be greater than the return air LT alarm threshold.


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Figure 5-28 T/H Sensor

5.11.4 System Settings

On the system settings screen, you can configure the system control, T/H sensor, CW valve,

indoor fan, and drain device.

Tap Settings > System Settings on the home screen to enter the system settings screen, as


Figure 5-29 System settings screen

If you need to change system settings, log in as users that have related permission. Except for

temperature and humidity items, only professional maintenance personnel are allowed to configure

related items.

System Control

On the system control screen, you can configure monitoring mode, unit start delay, disallow

on/off via EMS, dehumidification, MAX dehumid runtime, dew/sup water TD at dehumi,

anti-cond protection, anti-cond temp diff, anti-cond delay, and max diagnos mode duration.


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Tap Settings > System Settings > System Control on the home screen to enter the system

control screen, as shown in Figure 5-30.

Figure 5-30 System control screen

Tap items on the system control screen to configure parameters and query the value range of

parameters.

Log in as the Engineer user or other types of users that have higher permission.

Monitor mode defines the mode used by the EMS to monitor the NetCol5000-C-FC. The preset

mode is Single monitor.

Single Start delay defines the delay required by a NetCol5000-C-FC to respond to the operating

status delivered by the controller after the NetCol5000-C-FC is started. The value range of Single

Start delay is from 1s to 60s. The preset delay is 10s.

If EMS Start/off forbid is set to Yes, you cannot use the EMS to start or shut down the

NetCol5000-C-FC.

T/H Sensor

On the T/H sensor screen, you can configure T/H control type, supply-air temp set point,

supply-air humid set point, return-air temp set point, return-air humid set point, cold aisle

temp set point, cold aisle humid set point, hot aisle temp set point, hot aisle humid set point,

temp sampling period, temp p-band, temp deadband, temp p-coefficient, temp integ time

constant, temp diff time constant, humid sampling period, humid p-band, humid deadband,

humid p-coefficient, humid integ time constant, humid diff time constant, cold aisle sensor 1,

cold aisle sensor 2, cold aisle sensor 3, hot aisle sensor 1, hot aisle sensor 2, and hot aisle

sensor 3.

Tap Settings > System Settings > T/H Sensor on the home screen to enter the T/H sensor



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On the T/H sensor screen, the value range of parameters are displayed on the screen when you

click the corresponding items to set a parameter, take the cold aisle of T/H sensor as an

example, T/H control type select Cold aisle, cold aisle sensor select enable, as shown in

Figure 5-32.



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The Guest user can only query parameters on the temperature control screen. If you need to change

parameter values, log in as the Operator user or other types of users that have higher permission.

T/H control type is set to Supply-air by default.

You can only set the temperature and humidity set point whose control type are the same as the T/H

control type. Other Temperature and humidity set points are displayed in gray.

CW Valve

On the CW valve screen, you can configure the max adjust step, min valve opening for dehum,

anti-cond val regu ratio, and temp diff at no refrig.

Tap Settings > System Settings > CW Valve on the home screen to enter the CW valve


Figure 5-33 CW valve screen

Tap items on the CW valve screen to configure parameters and query the valve range of

parameters.

If you need to change CW valve settings, log in as the Admin user or other types of users that have

higher permission.

Indoor Fan Settings

On the indoor fan settings screen, you can configure the min speed, max speed, normal adjust

period, max adjust step, min ret/sup air temp diff, max ret/sup air temp diff, and max dehumid

speed.

Tap Settings > System Settings > Indoor Fan on the home screen to enter the settings screen,

as shown in Figure 5-34.


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Figure 5-34 Fan settings screen

Tap items on the Indoor fan settings screen to configure related parameters.

If you need to change fan settings, log in as the Engineer user or other types of users that have

higher permission.

Min speed cannot be greater than Max speed.

Min ret/sup air temp diff cannot be greater than Max ret/sup air temp diff.

Drain Device Settings

On the drain device settings screen, you can configure the low float fall pump off delay, high

float fall pump off delay, low float rise delay, high float rise delay, full water signal delay, l-flt

rise stdby pump on delay.

Tap Settings > System Settings > Drain Device on the home screen to enter the drain device

settings screen, as shown in Figure 5-35.

Figure 5-35 Drain device Settings

Tap items on the drain device settings screen to configure related parameters.


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You need to log in as the Admin user when changing drain device settings.

Low float fall pump off delay cannot be greater than High float fall pump off delay.

High float rise delay cannot be greater than Low float rise delay.

L-flt rise stdby pump on delay cannot be greater than Low float rise delay.

5.11.5 Basic Settings

Context

On the basic settings screen, you can set the language, time, date, and system.

Tap Settings > Basic Settings on the home screen to enter the basic settings screen.

The Guest user can perform basic settings only after the NetCol5000-C-FC is powered on for the first

time. Otherwise, if you need to perform basic settings, please log in as the Operator user or other types

of users that have higher permission.

Procedure

Step 1 Tap Settings > Basic Settings on the home screen to enter the language settings screen. You

can select from and , as shown in Figure 5-36.

Figure 5-36 Language Setting

Step 2 After the language is configured, tap Next to enter the Date & Time Settings screen, as



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Figure 5-37 Date Time Setting

Step 3 Configure the current time and date and tap Next to enter the System Settings screen, as


Figure 5-38 System Setting

Step 4 Configure the Monitoring mode on the System Settings screen. Select Finish to save the

settings and exit the screen.

----End

5.11.6 Restore Defaults

By restore defaults, you can restore parameters to factory values and save the restored values.

Tap Settings > Restore Defaults on the home screen to enter the following screen, as shown

in Figure 5-39.

If you need to restore preset settings, log in as the Admin user.

You can restore preset settings only when the NetCol5000-C is shut down.


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Tap Restore Defaults and then tap Yes. Parameters, except the current setting parameters, are

restored to the factory values. Perform this operation with caution.

When the restore defaults setting is done, the system would start automatically.

Figure 5-39 Screen for restoring preset settings

5.12 Teamwork Settings

Teamwork control is a solution for allocating the overall cooling and humidification capacity

of the data center, improving the usage efficiency of the smart cooling products by preventing

random operation. Multiple NetCol5000-Cs are interconnected and controlled in a central

control mode. In this manner, the teamwork function and rotation of the master and slave

NetCol5000-Cs can be implemented. A maximum of 32 NetCol5000-C can be interconnected

using the CAN bus bar. The device with the teamwork address as 1 is the master one, which

collects, processes, and delivers data.

Teamwork setting home page

After the teamwork is set successfully, the teamwork home page will be displayed as shown

in Figure 5-40.

Figure 5-40 Teamwork topology


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Table 5-2 Note for the page

No. Parameters Note

1 ON/OFF/NA ON indicates the NetCol5000-C is started and OFF

indicates the opposite. NA indicates the

NetCol5000-C is off-line.

2 01/02/03... Indicates the device address. 01 is the master one

and the rest are all slave ones.

3 Active/Standby Active indicates the active device and Standby

indicates the standby device (shut down), which is

started when activated or used in cascaded mode.

4 Frame:

green/non-green

A device with green frame indicates the device

itself, a non-green frame indicates the others.

5 Ground color: red,

bright grey, dark grey

Red indicates that a critical alarm is generated;

bright grey indicates that the device is operating

without any critical alarms; dark grey indicates that

the device is off-line.

Teamwork Settings

Set the teamwork function on the teamwork setting page. Parameters to be set for the master

device include Teamwork unit no., Teamwork unit address, Teamwork function,

Network, Total number of units, Number of running units, Standby mode rotation,

Rotation period, Rotation time, Forced rotation, and Requirement control and Cascade.

Click > Teamwork Settings on the home screen to enter pages shown in Figure

5-41 and Figure 5-42.

If you need to change teamwork settings, log in as the Admin or Engineer.

Figure 5-41 Teamwork setting page 1


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Figure 5-42 Teamwork setting page 2

Table 5-3 Teamwork settings

Parameter Description Configuration Principle

Teamwork unit

no.

A maximum of four groups (1 to

4) can be set.

Group the temperature control

devices in adjacent areas as one,

that is, assign one group number

for them.

Teamwork unit

address

Set an address (1 to 32) for each

temperature control device in

each group. Devices in the same

group cannot have the same

address and the address of the

master device in each group

should be 1.

Only one device in each group

can be set to 1.

Teamwork

function

Disable or enable the teamwork

function. If disabled, this device

is operating according to its own

control. If enabled, this device

works in harmony with others

that in the same group.

Set this parameter based on the

onsite device heat distribution.

Network Networking mode for the

teamwork.

Networked over CAN.

Total number of

units

Number of the temperature

control devices in this group (1 to

32 can be set).

Total number of the temperature

control devices in this group

Number of

running units

Number of the active devices (1

to [total number of units] can be

set). If the number is more than

the range, the excessive one(s)

cannot be group-controlled. If one

address is vacant, the topology

will display that the device is

Assign the devices to be active

ones by the device number,

beginning with the master one.

The rest will become the standby

ones.


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Parameter Description Configuration Principle

off-line.

Standby mode

rotation

Disable or enable the active and

standby smart cooling products to

work alternatively, maximizing

their service life.

This function is recommended

when the heat distribution is

even.

Rotation period Rotation days (1-30) 7 by default

Rotation time 24 hours in a day (0-23) 0 by default

Forced rotation Forced rotation specifies

whether to enable a forcible

rotation on the group before the

specified rotation time is

satisfied. After a forced rotation,

the accumulative Rotation time

is set to 0.

This function is set to No by

default.

Requirement

control

Enable or disable the master

device to send the requirement

control for the slave devices. If

set to Enable, the master device

will synchronize data to the slave

device. For otherwise, set to

Disable.

When the T/H control type, temp

set point and humidity set point

have the same values and devices

and heat are distributed evenly,

this function is recommended.

Cascade After the requirement control is

enabled, you can configure

Cascade. The cascade function

starts standby NetCol5000-C(s) if

the active one cannot meet the

refrigerating requirements.

If the heat load increases, the

cascade function is

recommended.

Teamwork Information

After all parameters are set, click at the right corner of the main page. Figure 5-43 and

Figure 5-44 will be displayed.


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Figure 5-43 Teamwork information page 1

Figure 5-44 Teamwork information page 2

Information in Master/Slave and Active/Standby is only about this single device. Other information is

about the group.

5.13 Maintenance

The Maint screen consists of Diagnostic Mode, Log Maint, Performance Maint, Sensor

Adjust, Screen Calib, and USB Operations.

Tap Maint on the home screen to enter the Maint screen, as shown in Figure 5-45.


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Figure 5-45 Maintain

5.13.1 Diagnostic Mode

On the diagnostic mode screen, you can enable or disable various components, control the

speed of indoor fans and CW valve.

Tap Maint > Diagnostic Mode on the home screen to enter the diagnostic mode screen, as


If you need to manually power on or off system components in diagnostic mode, log in as the

Operator user or users that have higher permission. Ensure that the NetCol5000-C is powered on

before operation.

You cannot enter the diagnostic mode if the NetCol5000-C is shut down.

After entering the diagnostic mode, tap on the status bar to exit the diagnostic mode.

Tap Enter on the diagnostic mode screen and then tap Yes to enter the diagnostic mode, as shown in

Figure 5-47 and Figure 5-48.

Tap Exit on the diagnostic mode screen and then tap Yes to exit the diagnostic mode, as shown in

Figure 5-49.

The system automatically exits the diagnostic mode after cumulative 60 minutes.


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Figure 5-46 Diagnostic mode screen

Figure 5-47 Confirming the diagnostic mode

Figure 5-48 Entering the diagnostic mode


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Figure 5-49 Exiting the diagnostic mode

5.13.2 Log Maintenance

On the log maintenance screen, you can query or delete logs. Logs record operations on the

system. Therefore, maintenance and technical service engineers can query logs to locate

operations on the system. You can delete logs in a one-click manner.

Tap Maint > Log Maint > Query Logs on the home screen to enter the log query screen, as


Tap Maint > Log Maint > Delete Logs on the home screen to enter the following screen, as

shown in Figure 5-51. Tap Yes to delete logs.

If you need to query logs, log in as the Operator user or other types of users that have higher

permission.

The log query screen displays 200 logs that are generated recently.

The operation, operation value, location, operation source, date and time, and user name of a log are

displayed.


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If you need to delete logs, log in as the Admin user. Be careful when deleting logs so that

device maintenance is not affected.

Exercise cautions when tap Delete Logs because all logs are deleted once you perform the

operation.

After logs are deleted, the log deletion operation is recorded in the first log that is

displayed.

Figure 5-50 Log query screen

Figure 5-51 Log deletion screen

5.13.3 Performance Maintenance

On the performance maintenance screen, you can query the accumulated running time of main

components and clear accumulated running time of certain values.

Tap Maint > Perform Maint on the home screen to enter the performance maintenance



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Tap Clear on the performance maintenance screen to clear the value of a parameter.

If you need to clear the value of a performance parameter, log in as the Admin or Engineer user.

Figure 5-52 Performance maintenance screen

5.13.4 Sensor Adjust

On the sensor adjust screen, you can configure the temperature and humidity deviations to

adjust the temperature and humidity collection board. If the temperature and humidity adjust

values for the return air are set to 5°C and 3% respectively, and the temperature and humidity

detected by the T/H sensor collection board are set to T and H respectively, calculate as

follows: Required return-air temperature = T + 5°C; Required return-air humidity = H + 3%.

Tap Maint > Sensor Adjust on the home screen to enter the sensor adjust screen, as shown in

Figure 5-53.

If you need to adjust the sensor, log in as the Engineer user or other types of users that have higher

permission.

Figure 5-53 Sensor adjust screen


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5.13.5 Screen Calibration

You can calibrate the screen by tapping the screen on the Screen Calib page or by DIP

switch.

Tapping the Screen on the Screen Calib Page

Prerequisite: The program of the display board works normally; the deviation between the

touching point and the responding point is small; the Screen Calib page can be entered over

the screen.

Tap Maint > Screen Calib to enter the following screen, as shown in Figure 5-54. Figure

5-55 is displayed when the screen calibration is complete.

Figure 5-54 Screen calibration page

Figure 5-55 Screen displayed when the calibration is complete


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Calibrating the Screen by DIP Switch

Prerequisite: The display board works normally; the deviation between the touching point and

the responding point is unfavorably big; or the screen does not respond when being tapped.

You can calibrate the screen by DIP switch only when the device is powered on for the

first time or only on the home page.

After the screen calibration is complete, flip all the toggle switches to OFF.

The toggle switches for the screen as shown by 3 in Figure 5-57. Flip the fourth toggle switch

to ON↓ and the rest to the opposite to calibrate the screen.

In 15 seconds, a dialog box indicating Are you sure you want to calibrate the screen? If

you do not process Yes or No, calibration will start automatically 10 seconds later. is

displayed, as shown in Figure 5-56.

Figure 5-56 Confirming to calibrate the screen

Tap Yes to enter the page shown in Figure 5-54. Tap the screen. Screen is displayed as Figure

5-55 when the calibration is complete.

5.13.6 USB Operations

Context

USB operations provide easy access for users to update controller programs.

Before the upgrade, connect the USB port of the controller LCD first. Figure 5-57 shows the

ports on the controller LCD.


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Figure 5-57 Ports on the controller LCD

(1) USB port (for

upgrade only)

(2) Communication port between main control and LCD

(connected before delivery)

(3) DIP switch on LCD

After the system is restarted, do not power off the system within 5 minutes. Otherwise, the

system fails to be upgraded.

Do not use the element management system (EMS) or remote to start the NetCol5000-C

during upgrade.

After the USB flash drive is successfully connected to the display panel, is displayed in the

status bar.

Controller programs can be upgraded only when the device is shut down completely.

Procedure

Step 1 Copy the update file to the USB flash drive. Format the file system of the USB flash drive to

FAT or FAT32. Insert the USB flash drive into the USB port on the display panel. If the USB

flash drive is successfully identified, the following message is displayed, as shown in Figure

5-58.


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Figure 5-58 Message displayed after the USB flash drive is identified

Step 2 Tap Maint > USB Operations > Version Upgrade on the home screen. The following

screen is displayed, as shown in Figure 5-59.

Figure 5-59 Screen for upgrading software

If you need to use the version update, please log in by the Admin user permission.

Step 3 Tap Search, the Select File screen is displayed. The system scans the USB flash drive for

files and displays the identified files in the Select File screen, as shown in Figure 5-60. Tap

the update file and then tap Next to upload the file, as shown in Figure 5-61.


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Figure 5-60 File Selection

Figure 5-61 Copying data

Step 4 After the file is successfully uploaded, the Version Upgrade window is displayed, as shown

in Figure 5-62. Select the software to be upgrade and tap Update.


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Figure 5-62 Software Upgrade

Step 5 During the upgrading process, the system displays the upgrading progress, as shown in Figure

5-63.

Figure 5-63 Information displayed during the upgrading process

Step 6 Figure 5-64 is displayed if the software is successfully upgraded. Figure 5-65 is displayed if

the software fails to be upgraded.


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Figure 5-64 Screen displayed when the software is successfully upgraded

Figure 5-65 Screen displayed when the software fails to be upgraded

Step 7 After the software is activated, the system automatically restarts. The control board and

display panel also restart.

Step 8 Remove the USB flash drive after the system is successfully upgraded. Tap Maint > USB

Operations > Remove USB on the home screen. A message is displayed, as shown in Figure

5-66.


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Figure 5-66 Message displayed after a USB flash drive is removed

Step 9 After the USB flash drive is removed, a message is displayed on the screen, as shown in

Figure 5-67.

Figure 5-67 Message displayed on the home screen after a USB flash drive is removed

The message indicating that the USB flash drive is identified or removed is displayed within 3 seconds.

----End

5.14 About

The About screen displays the model, manufacturer, controller version, version info and

electronic label of the device.

Tap About on the home screen to enter About screen, as shown in Figure 5-68.


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Figure 5-68 About

The Version Info screen displays the version of display panel, control panel, T/H board, Tap

Version Info on the About screen to enter Version Info screen, as shown in Figure 5-69.

Figure 5-69 Version Info

The E-Label screen displays electronic labels of the entire system, main control board, and

display panel, on the About screen to tap E-label to enter the E-label screen as shown in

Figure 5-70.


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Figure 5-70 E-label


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User Manual (Full Configuration) 6 System Operation and Maintenance


6 System Operation and Maintenance

6.1 Routine Maintenance

6.1.1 Routine Maintenance Overview

Definition

Routine maintenance refers to preventive and periodic check and maintenance carried out to

promptly identify and handle alarms and potential faults during the normal operation of the

equipment.

Precautions Routine maintenance is critical to the normal operation of equipment. Perform routine

maintenance regularly. Read the precautions and product documentation before

performing routine maintenance.

Follow local laws and safety instructions to minimize the risk of personal injury and

damage to equipment.

The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this

document do not represent all safety instructions. They are only supplements to the

safety instructions.

Personnel who will install, operate, and maintain Huawei equipment must receive

thorough training, understand all necessary safety precautions, and be able to correctly

perform all operations.

Pay attention to the safety symbols on the equipment and all safety instructions in this

document. The safety precautions given in this document do not cover all safety

precautions. Huawei will not be liable for any consequence caused by violation of the

safety operation regulations and design, production, and usage standards.

Most maintenance tasks should be performed only after the power supply is disconnected

from the equipment. Do not connect the power supply during maintenance. If you need

to perform maintenance tasks such as measuring the current, voltage, and temperature

when the equipment is operating, connect the power supply only after you have finished

all equipment connections. Disconnect the power supply when you finish maintenance.

Take protective measures during electrical maintenance, such as wearing insulation

gloves and shoes.

Exercise caution when performing professional maintenance tasks. For details, consult Huawei technical support.


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During component replacement, do not lean any material against the cabinet.

6.1.2 Electrical Control Box Component Maintenance

Context

Components of an electrical control box include main control board, terminal block, circuit

breakers, SPD, AC contactor, relay, and transformer. To maintain the preceding components.

Figure 6-1 shows the electrical control box components.

Figure 6-1 Electrical control box components

(1) Main control

board

(2) Circuit

breaker

(3) Relay, SPD, AC contractor(from left to

right)

(4) Transformer (5) Transformer (6) Terminal block

Procedure

Step 1 Remove the cover of the electrical control box and all terminals.

Step 2 Loosen two screws on the upper part of the electrical control box.

Step 3 Pull the electrical control box out.


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The electrical control box is about 16 kg weight. Exercise caution when pull it out.

Step 4 Put the electrical control box on a flat floor and remove the electrical control box cover.

(Remove the upper part and then the lower part.)

Step 5 Maintain or replace components in the electrical control box.

Step 6 Install the electrical control box in an inverse order.

----End

6.1.3 Air Filter Maintenance

Table 6-1 lists the air filter monthly maintenance items.

Table 6-1 Air filter monthly maintenance item

No. Operations Troubleshooting Remarks

1 Clean the air filters with

water.

Clean the air filters with

water or replace the air

filters (for details, see

6.4.3 Replacing an Air

Filter)

Perform the operations

with the power off.

2 Check whether the air

filter is damaged or

deformed.

Replace an air filter by

referring to 6.4.3

Replacing an Air Filter if

necessary.


with the power off.

3 Check whether the

differential pressure

sensor of the air filter

works properly.

1. Switch on the

external power

supply circuit

breaker. After the

unit operates

normally, choose

Settings > Alarm

settings > Main

Board to Enable the

alarm function of the


switch.

2. Block 75% of the air

return vent with

plastic material or

baffle plate. If the air

filter blocking alarm

is generated, the differential pressure

Check whether the

pressure tube of the air

filter clogging switch is

fixed properly. (The

pressure tube is fixed

under the air filter, and it

is on the right side of the

unit.) If the fault is not

rectified, contact Huawei

technical support to

replace the air filter

clogging switch.


with the power on.


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sensor is working

properly. If the air

filter blocking alarm

is not generated,

check whether the


tube is correctly

connected.

6.1.4 Condensate Pump Maintenance

Table 6-2 lists the condensate pump monthly maintenance items.

Table 6-2 Condensate pump monthly maintenance item


1 Check that screws fastening the

condensate pump are securely

connected.

Secure the screws

tightly.

Perform the

operations with the

power off.

2 Switch on the external power supply

circuit breaker. After the unit

operates normally do as follows.

Raise the high float, choose

Running > Status on the

controller to confirm that the float

status is ON.

Choose Alarms > Query Hist.

Alarms on the controller to check

if there are condensate pump

alarms and clear the alarms.

If the float status

is not ON,

replace the water

pump, see 6.4.4

Replacing a

Condensate

Pump.

Clear the

condensate pump

alarms by

referring to 6.2

Alarm

Reference.

Perform the

operations with the

power on.

3 Check whether two water pumps

drain water properly.

If a pump cannot

drain water, replace

the water pump, see

6.4.4 Replacing a

Condensate Pump.

Perform the

operations with the

power on.

6.1.5 Indoor Fan Maintenance

Table 6-3 lists the indoor fan monthly maintenance items.

Table 6-3 Indoor fan monthly maintenance item



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1 Check that no foreign

matter exists in the fan.

Clean the foreign matters. Perform the operations

with the power off.

2 Check that the blades are

intact.

Maintain the blades. If the

fault is not rectified,

replace the fan by

referring to 6.4.5

Replacing a Fan.


with the power off.

3 Check that no abnormal

voice is generated during

operation.

Clean the foreign matters,

and make sure that the fan

is fixed properly.


with the power on.

4 Check that the screws are

secured and not

deformed.

Tighten the screws.

Replace the screws if

necessary.


with the power off.

5 Check that the wiring

terminals are secured.

Tighten the terminals. Perform the operations

with the power off.

6.1.6 Electrical Control System Maintenance

Electronic control system is the semi-annual maintenance, Table 6-4 describes the

maintenance items for the electrical control system.

Table 6-4 Maintenance items for the electrical control system

No.

Operations Troubleshooting Remarks

1 Check and secure all circuit cables,

and ensure that all wiring terminals

are securely tightened.

Secure the cables and

terminals.

Perform the

operations with the

power off.

2 Ensure that each plug has proper

contact and replace any loose plug.

Connect the plug

again. If the fault is

not rectified, replace

the plug.

Perform the

operations with the

power off.

3 Ensure that input and output cable

connectors on the front panel of the

electrical control box are securely

connected. The cables include user

cables, cables between the main

control board and display panel,

cables between the main control

board and the T/H sensor, cables

between the main control board and

the host, cables between main

control boards.

Reconnect the cables

again.

Perform the

operations with the

power off.

4 Check that cables from the front

panel of the electrical control box to

Reconnect the cables

again.

Perform the

operations with the


Product



No.

Operations Troubleshooting Remarks

fans, humidity and temperature

sensors, power supplies, chilled

water valves, condensate pump,

high and low float switches, water

sensors, and air filter block switch

are securely connected.

power off.

5 Use a brush or compressed dry air

to clean various electric

components, control components,

the main control board, and the

surge protection and voltage test

board.

N/A Perform the

operations with the

power off.

6 Check whether the display panel,

humidity and temperature sensor or

cables is aging on the surface.

Replace the

components or cables.

Perform the

operations with the

power off.

6.2 Alarm Reference

Table 6-5 describes the NetCol5000-C-FC alarm reference.

Table 6-5 Alarm reference

Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

a001 Return-air

1/2 temp

invalid

Major The alarm is

generated.

1. The return

air

temperature

sensor is

faulty.

2. Cables to

the return air

temperature

sensor are

loose or

damaged.

1. Maintain or

replace the

return air

temperature

sensor.

2. Check cables

to the return

air

temperature

sensor.

a002 Return-air

HT

Critical The alarm is

generated. The

indoor fan has the

maximum output,

and the CW valve

has 100% outputs

in automatic

running mode.

1. The

return-air

high

temperature

alarm set

point is

inappropriat

e for the

working

conditions.

1. Adjust the

return-air

high

temperature

alarm set

point.

2. Maintain or

replace the

temperature and humidity


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

2. The

temperature

displayed on

the LCD is

different

from the

actual

temperature.

3. The chilled

water flow

is

insufficient,

or the

supply water

temperature

is high.

4. The chilled

water valve

is faulty.

5. The cooling

capacity of

the

NetCol5000

-C is

insufficient

due to high

load.

6. The ambient

temperature

is high.

sensor.

3. Check the

pressure and

temperature

of the

supplied

chilled water.

4. Maintain or

replace the

chilled water

valve.

5. Add more

NetCol5000-

C units.

6. Check the

ambient

temperature.

a003 Return-air

LT

Warning The alarm is

generated.

1. The

return-air

low

temperature

alarm set

point is

inappropriat

e for the

working

conditions.

2. The

temperature

displayed on

the LCD is

different

from the

actual

temperature.

3. The chilled

water valve is faulty.

1. Adjust the

return-air low

temperature

alarm set

point.

2. Maintain or

replace the

temperature

and humidity

sensor.

3. Maintain or

replace the

chilled water

valve.

4. Check the

ambient

temperature.


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

4. The ambient

temperature

is low.

a018 Indoor fan

1/2/3/4/5/6/

7/8 exceed

runtime


generated.

The

accumulated

runtime of

indoor fan

exceeds the

alarm set point.

Maintain or

replace indoor

fan.

a025 Air filter

blocked


generated.

1. The air

filters are

blocked.

2. Cables to

the

differential

pressure

switch are

loose or

damaged.

3. The

differential

pressure

switch is

faulty.

4. The

differential

pressure

tube is

blocked.

1. Clean or

replace air

filters.

2. Check cables

to the

differential

pressure

switch.

3. Replace the

differential

pressure

switch.

4. Check the

differential

pressure tube.

a026 Air filter

exceed

runtime


generated.

The

accumulated

runtime of the

air filters

exceeds the

alarm set point.

Maintain or

replace the air

filters.

a027 Power loss Warning The alarm is

generated.

The

NetCol5000-C

is disconnected.

No recovery

measure is

required.

a041 Cond pump

1/2 fault

Major The alarm is

generated.

1. Condensate

pump is

faulty.

2. The fuse or

relay of

condensate

pump is

faulty.

3. The

drainage

1. Replace

condensate

pump.

2. Replace the

fuse or relay

of condensate

pump.

3. Check cables

to condensate

pump.


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

capacity of

condensate

pump 1

decreases, or

the

drainpipe is

blocked.

4. Cables to

condensate

pump 1 are

loose or

damaged.

4. Remove dirt

from the

drainpipe.

a042 Remote

shutdown


generated, and

the

NetCol5000-C

shuts down.

1. The remote

shutdown

switch is

triggered.

2. The remote

shutdown

switch is

faulty, or

cables to the

remote

shutdown

switch are

loose or

damaged.

1. Check the

status of the

remote

shutdown

switch.

2. Reconnect

the remote

shutdown

switch and

cables to the

remote

shutdown

switch.

a043 Floor water

overflow


generated, and

the

NetCol5000-C

shuts down.

1. Water exists

on the floor.

2. The

overflow

detection

board is

faulty.

1. Check and

clear the

water.

2. Maintain or

replace the

overflow

detection

board.

a044 Smoke

detected


generated, and

the

NetCol5000-C

shuts down.

1. Smoke is

generated in

the

equipment

room.

2. Cables to

the smoke

sensor are

loose or

damaged.

3. The smoke

sensor is

faulty.

1. Exhaust

smoke in the

equipment

room and

reset the

smoke

sensor.

2. Check cables

to the smoke

sensor.

3. Replace the

smoke

sensor.

a045 Teamwork

mode failed

Major The alarm is

generated, and a message

1. The

teamwork

circuits are

1. Check the

teamwork

circuits.


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

"Networking

failed" is

displayed.

faulty.

2. The master

and slave

NetCol5000

-C units

have the

same

address.

3. The master

NetCol5000

-C is not

configured.

2. Change the

NetCol5000-

C addresses.

3. Configure the

master

NetCol5000-

C.

a047 No Refrig

Output Critical The alarm is

generated, and

the

NetCol5000-C

shuts down.

1. Cables to

the chilled

water valve

are loose or

damaged.

2. The chilled

water valve

is stuck or

faulty.

1. Check cables

to the chilled

water valve.

2. Maintain or

replace the

chilled water

valve.

a048 Supply-air

HT


generated. The

indoor fan has the

maximum output,

and the value has

100% outputs in

automatic

running mode.

1. The

supply-air

high

temperature

alarm set

point is

inappropriat

e for the

working

conditions.

2. The

temperature

displayed on

the LCD is

different

from the

actual

temperature.

3. Cables to

the

supply-air

temperature

sensor are

loose or

damaged.

4. The chilled

water flow

is insufficient,

1. Adjust the

supply-air

high

temperature

alarm set

point.

2. Maintain or

replace the

supply air

temperature

sensor.

3. Check cables

to the

supply-air

temperature

sensor.

4. Check the

pressure and

temperature

of the

supplied

chilled water.

5. Maintain or

replace the

chilled water

valve.

6. Add more

NetCol5000-

C units.


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

or the

supply water

temperature

is high.

5. The chilled

water valve

is faulty.

6. The cooling

capacity of

the

NetCol5000

-C is

insufficient

due to high

load.

7. The ambient

temperature

is high.

7. Check the

ambient

temperature.

a049 Supply-air

LT


generated.

1. The

supply-air

low

temperature

alarm set

point is

inappropriat

e for the

working

conditions.

2. The

temperature

displayed on

the LCD is

different

from the

actual

temperature.

3. Cables to

the supply

air

temperature

sensor are

loose or

damaged.

4. The chilled

water valve

is faulty.

5. The ambient

temperature

is low.

1. Adjust the

supply-air

low

temperature

alarm set

point.

2. Maintain or

replace the

supply air

temperature

sensor.

3. Check cables

to the

supply-air

temperature

sensor.

4. Maintain or

replace the

chilled water

valve.

5. Check the

ambient

temperature.

a050 Cold aisle Critical The alarm is 1. The 1. Adjust the


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

HT generated. The

indoor fan has the

maximum output,

and the CW value

has 100% outputs

in automatic

running mode.

return-air

high

temperature

alarm set

point is

inappropriat

e for the

working

conditions.

2. The

temperature

displayed on

the LCD is

different

from the

actual

temperature.

3. The chilled

water flow

is

insufficient,

or the

supply water

temperature

is high.

4. The chilled

water valve

is faulty.

5. The cooling

capacity of

the

NetCol5000

-C is

insufficient,

or the load

is high.

6. The ambient

temperature

is high.

return-air

high

temperature

alarm set

point.

2. Maintain or

replace the

temperature

and humidity

sensor.

3. Check the

pressure and

temperature

of the

supplied

chilled water.

4. Maintain or

replace the

chilled water

valve.

5. Add more

NetCol5000-

C units.

6. Check the

ambient

temperature.

a051 Hot aisle

HT


generated. The

indoor fan has the

maximum output,

and the

electromagnetic

valve and

actuator has

100% outputs in

automatic

running mode.

1. The high

temperature

alarm set

point for the

hot aisle is

inappropriat

e for the

working

conditions.

2. The

temperature displayed on

1. Adjust the

high

temperature

alarm set

point for the

hot aisle.

2. Maintain or

replace the

temperature

and humidity

sensor.

3. Check the


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

the LCD is

different

from the

actual

temperature.

3. The chilled

water flow

is

insufficient,

or the

supply water

temperature

is high.

4. The chilled

water valve

is faulty.

5. The cooling

capacity of

the

NetCol5000

-C is

insufficient

due to high

load.

pressure and

temperature

of the

supplied

chilled water.

4. Maintain or

replace the

chilled water

valve.

5. Add more

NetCol5000-

C units.

a052 Supply-air

temp

invalid

Major The alarm is

generated.

1. The

temperature

sensor at

supply-air

vent is

faulty.

2. Cables to

the

temperature

sensor at

supply air

vent are

loose or

damaged.

1. Maintain or

replace the

temperature

sensor at

supply-air

vent.

2. Check cables

to the

temperature

sensor at

supply-air

vent.

a077 Indoor fan

1/2/3/4/5/6/

7/8 failure

Major The alarm is

generated.

1. The power

supply to the

indoor fans

is abnormal.

2. Cables to

indoor fan

are loose or

damaged.

3. Indoor fan is

faulty.

1. Check the

power supply

to the indoor

fans.

2. Check cables

to indoor fan.

3. Maintain or

replace

indoor fan.

a078 Full water Critical The alarm is

generated, and

1. The high float is

1. Replace the high float or


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

the

NetCol5000-C

shuts down.

faulty or

stuck.

2. The

condensate

pump is

faulty, or the

drainage

capacity of

the

condensate

pump

decreases.

3. The

drainpipe of

the

condensate

pump is

blocked.

clear the

obstacles.

2. Replace the

condensate

pump.

3. Clear

obstacles in

the drainpipe.

a079 Drain

abnormal

Major The alarm is

generated.

1. The low

float is

faulty or

stuck.

2. The high

float is

faulty or

stuck.

3. Cables to

the high or

low float are

loose or

damaged.

4. The

condensate

pump is

faulty, or the

drainage

capacity of

the

condensate

pump

decreases.

5. The

drainpipe of

the

condensate

pump is

blocked.

1. Maintain or

replace the

low float or

clear the

obstacles.

2. Maintain or

replace the

high float or

clear the

obstacles.

3. Check cables

to the faulty

float.

4. Maintain or

replace the

condensate

pump.

5. Clear

obstacles in

the drainpipe.

a080 CW value

exceed

runtime


generated.

The

accumulated

runtime of the

Maintain or

replace the CW

value.


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

CW value

exceeds the

alarm set point.

a083 SPD fault Major The alarm is

generated.

1. The SPD is

faulty.

2. Cables to

the SPD are

loose or

damaged.

1. Maintain or

replace the

SPD.

2. Check cables

to the SPD.

a084 Power fault Critical The alarm is

generated, and

the

NetCol5000-C

shuts down.

A wrong power

distributor is

used.

Maintain or

replace the

power

distributor.

a085 Route A

fuse

disconnect


generated, and

the

NetCol5000-C

shuts down.

1. A device on

loop A is

faulty.

2. The loop A

fuse is

blown.

1. Maintain or

replace the

faulty device

on loop A.

2. Replace the

loop A fuse.

a086 Route B

fuse

disconnect


generated, and

the

NetCol5000-C

shuts down.

1. A device on

loop B is

faulty.

2. The loop B

fuse is

blown.

1. Maintain or

replace the

faulty device

on loop B.

2. Replace the

loop B fuse.

a087 Route C

fuse

disconnect


generated, and

the

NetCol5000-C

shuts down.

1. A device on

loop C is

faulty.

2. The loop C

fuse is

blown.

1. Maintain or

replace the

faulty device

on loop C.

2. Replace the

loop C fuse.

a088 Route D

fuse

disconnect


generated, and

the

NetCol5000-C

shuts down.

1. A device on

loop D is

faulty.

2. The loop D

fuse is

blown.

1. Maintain or

replace the

faulty device

on loop D.

2. Replace the

loop D fuse.

a090 Cond pump

1/2 exceed

runtime


generated.

The

accumulated

runtime of

condensate

pump exceeds

the alarm set

point.

Maintain or

replace

condensate

pump.

a091 Cold aisle

LT Warning The alarm is

generated.

1. The

return-air

1. Adjust the

return-air low


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

low

temperature

alarm set

point is

inappropriat

e for the

working

conditions.

2. The

temperature

displayed on

the LCD is

different

from the

actual

temperature.

3. The chilled

water valve

is faulty.

4. The ambient

temperature

is low.

temperature

alarm set

point.

2. Maintain or

replace the

temperature

and humidity

sensor.

3. Maintain or

replace the

chilled water

valve.

4. Check the

ambient

temperature.

a092 Hot aisle

LT


generated.

1. The low

temperature

alarm set

point for the

hot aisle is

inappropriat

e for the

working

conditions.

2. The

temperature

displayed on

the LCD is

different

from the

actual

temperature.

3. The chilled

water valve

is faulty.

4. The ambient

temperature

is low.

1. Adjust the

low

temperature

alarm set

point for the

hot aisle.

2. Maintain or

replace the

temperature

and humidity

sensor.

3. Maintain or

replace the

chilled water

valve.

4. Check the

ambient

temperature.

a093 High

humidity


generated.

1. The high

humidity

alarm set

point is inappropriat

1. Adjust the

high

humidity

alarm set point.


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

e for the

working

conditions.

2. The

humidity

detected by

temperature

and

humidity

sensor is

higher than

the actual

value.

3. The

temperature

and

humidity

sensor is

located in an

inappropriat

e position.

4. The ambient

humidity is

high.

2. Maintain or

replace the

temperature

and humidity

sensor.

3. Adjust the

position of

the

temperature

and humidity

sensor.

4. Check the

ambient

humidity.

a094 Low

humidity


generated.

1. The low

humidity

alarm set

point is

inappropriat

e for the

working

conditions.

2. The

humidity

detected by

temperature

and

humidity

sensor is

lower than

the actual

value.

3. The

temperature

and

humidity

sensor is

located in an

inappropriat

e position.

4. The ambient

1. Adjust the

low humidity

alarm set

point.

2. Maintain or

replace the

temperature

and humidity

sensor.

3. Adjust the

position of

the

temperature

and humidity

sensor.

4. Check the

ambient

humidity.


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

humidity is

low.

a096 Invalid

supply

water temp

Major The alarm is

generated.

1. The supply

water

temperature

sensor is

faulty.

2. Cables to

the supply

water

temperature

sensor are

loose or

damaged.

1. Maintain or

replace the

supply water

temperature

sensor.

2. Check cables

to the supply

water

temperature

sensor.

a097 Supply

water high

temp

Major The alarm is

generated.

1. The supply

water high

temperature

alarm set

point is

inappropriat

e for the

working

conditions.

2. The

temperature

displayed on

the LCD is

different

from the

actual

temperature.

3. Cables to

the supply

water

temperature

sensor are

loose or

damaged.

4. The

temperature

of chilled

water is

higher than

the high

temperature

alarm set

point.

1. Adjust the

supply water

high

temperature

alarm set

point.

2. Maintain or

replace the

supply water

temperature

sensor.

3. Check cables

to the supply

water

temperature

sensor.

4. Check the

temperature

of the

supplied

chilled water.

a098 Supply

water low temp


generated.

1. The supply

water low

temperature

1. Adjust the

supply water

low


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

alarm set

point is

inappropriat

e for the

working

conditions.

2. The

temperature

displayed on

the LCD is

different

from the

actual

temperature.

3. The

temperature

of chilled

water is

lower than

the low

temperature

alarm set

point.

temperature

alarm set

point.

2. Maintain or

replace the

supply water

temperature

sensor.

3. Check the

temperature

of the

supplied

chilled water.

a099 Invalid

return water

temp

Major The alarm is

generated.

1. The return

water

temperature

sensor is

faulty.

2. Cables to

the return

water

temperature

sensor are

loose or

damaged.

1. Maintain or

replace the

return water

temperature

sensor.

2. Check cables

to the return

water

temperature

sensor.

a101 CW value

abnormal

feedback

Major The alarm is

generated.

1. Cables to

the chilled

water valve

are loose or

damaged.

2. The chilled

water valve

is faulty.

1. Adjust the

cables to the

chilled water

valve.

2. Maintain or

replace the

chilled water

valve.

a103 Indoor fan

power

alarm

Major The alarm is

generated, and

the indoor fan

output is less than

85%.

1. The indoor

fan power

module is

faulty.

2. Cables to

the indoor fan power

1. Maintain or

replace the

indoor fan

power

module.

2. Check cables to the dry


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

module are

loose or

damaged.

contact of the

indoor fan

power

module.

a104 In-cabinet

overflow


generated, and

the

NetCol5000-C

shuts down.

1. Water exists

in the

overflow

pan.

2. The cabinet

overflow

sensor is

disconnecte

d.

1. Check and

clear the

water.

2. Maintain or

replace the

cabinet

overflow

sensor.

a105 Indoor fan

failure


generated.

The number of

faulty indoor

fans is greater

than or equals

to six.

Maintain or

replace the

faulty indoor

fans.

a106 Cab

overflow

sensor fault

Major The alarm is

generated, and

the

NetCol5000-C

shuts down.

The cabinet

overflow sensor

is faulty.

Maintain or

replace the

cabinet overflow

sensor.

a108 Cold aisle

1/2/3 temp

invalid

Major The alarm is

generated.

1. The ambient

T/H sensor

fails to

communicat

e with the

NetCol5000

-A.

2. Dirt or water

exists

around the

board,

which leads

to a

detection

fault.

3. The ambient

T/H sensor

is faulty.

1. Clear the

return-air 2

T/H brd

comm fail

alarm.

2. Remove dirt

or water from

the board.

3. Maintain or

replace the

ambient T/H

sensor.

a109 Cold aisle

1/2/3 humid

invalid

Major The alarm is

generated.

1. The ambient

T/H sensor

fails to

communicat

e with the

NetCol5000

-A.

2. Dirt or water

1. Clear the

return-air 2

T/H brd

comm fail

alarm.

2. Remove dirt

or water from

the board.


Product



Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

exists

around the

board,

which leads

to a

detection

fault.

3. The ambient

T/H sensor

is faulty.

3. Maintain or

replace the

ambient T/H

sensor.

a110 Cold aisle

1/2/3 T/H

brd comm

fail

Major The alarm is

generated.

1. The DIP

switch is

incorrectly

set for the

ambient T/H

sensor.

2. The

communicat

ions cables

to the

ambient T/H

sensor are

loose or

damaged.

3. The ambient

T/H sensor

is faulty.

1. Correctly

set the DIP

switch for the

ambient T/H

sensor, as

shown in

3.15.5

Installing the

T/H Sensor.

2. Make sure

the

communicati

on cables to

the T/H

sensor is

connected

properly.

3. Maintain or

replace the

ambient T/H

sensor.

a111 Hot aisle

1/2/3 temp

invalid

Major The alarm is

generated.

1. The ambient

T/H sensor

fails to

communicat

e with the

NetCol5000

-A.

2. Dirt or water

exists

around the

board,

which leads

to a

detection

fault.

3. The ambient

T/H sensor

is faulty.

1. Clear the

return-air 2

T/H brd

comm fail

alarm.

2. Remove dirt

or water from

the board.

3. Maintain or

replace the

ambient T/H

sensor.

a112 Hot aisle Major The alarm is 1. The ambient 1. Clear the


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Alarm ID

Alarm Name

Severity

System Operation

Possible Causes

Recovery Measures

1/2/3 humid

invalid

generated. T/H sensor

fails to

communicat

e with the

NetCol5000

-A.

2. Dirt or water

exists

around the

board,

which leads

to a

detection

fault.

3. The ambient

T/H sensor

is faulty.

return-air 2

T/H brd

comm fail

alarm.

2. Remove dirt

or water from

the board.

3. Maintain or

replace the

ambient T/H

sensor.

a113 Hot aisle

1/2/3 T/H

brd comm

fail

Major The alarm is

generated.

1. The DIP

switch is

incorrectly

set for the

ambient T/H

sensor.

2. The

communicat

ions cables

to the

ambient T/H

sensor are

loose or

damaged.

3. The ambient

T/H sensor

is faulty.

1. Correctly

set the DIP

switch for the

ambient T/H

sensor, as

shown in

3.15.5

Installing the

T/H Sensor.

2. Make sure

the

communicati

on cables to

the T/H

sensor is

connected

properly.

3. Maintain or

replace the

ambient T/H

sensor.

6.3 Troubleshooting

Table 6-6 describes the common faults of NetCol5000-C-FC and handling methods.

Table 6-6 Common faults and handling methods

Symptom Possible Causes Troubleshooting


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The fan does not

rotate after the

NetCol5000-C-FC

starts.

The power supply

module of the fan is

faulty or abnormal

(including the fuse of the

power supply module is

blown.)

The fan fuse is blown.

Cables to the fan are

faulty.

Ensure that the power supply

module of the fan is inserted to the

subrack. If the fault persists,

replace the power supply module

(or replace the fuse).

Replace the fan fuse.

Check whether the cables to the

fan short-circuit or are

disconnected.

The fan generates

loud noises.

The air filter is blocked.

Dirt exists at the fan air

exhaust vent.

The fan is not securely

installed.

The fan is faulty.

Clean the air filter.

Clear the fan air exhaust vent.

Fasten the fan screws

Replace the fan.

Drainage capacity

of the

NetCol5000-C-FC

decreases.

The drainpipe is bent by

a large angle or trap

exists.

The drainage system is

faulty. (The water pump,

floats, or drainpipes are

faulty.)

Check that self-drainpipes are not bent

by a large angle and traps do not exist.

Ensure that the height difference for

drainage is enough.

Check the pump drainage:

Check that the floats are working

properly.

Check whether fuses on circuits C

and D are blown. If yes, replace

the fuses.

Check whether the relay works

properly. If not, replace the relay.

Check whether the water pump

works properly. If not, replace the

water pump.

Check that the pipes are not bent

by a large angle.

The

NetCol5000-C-FC

leaks.

The thermal insulation

tube of the

NetCol5000-C-FC is

damaged.

The condensate

drainpipe is blocked.

The pipes leak.

Check whether thermal insulation

tube of the NetCol5000-C-FC is

securely installed and repair the

damaged thermal insulation tube.

Ensure that the drainpipes are not

bent by a large angle, the drainpipe

connectors are securely installed,

the condensate pump is not faulty,

and the floats are not faulty.

Check the pipes and weld the pipe

or fasten related bolts if the pipes

leak.

The temperature is The jumper cap of the chilled water valve is not

Check the W1 jumper of the chilled water valve controller.


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abnormal. connected to the right

position.

The valve plug of the

chilled water valve is

reversely installed.

The chilled water valve

is stuck.

The humidity detected

by the humidity and

temperature sensor is

larger than the actual

humidity, which results

in anticond protection

being triggered

frequently for the

NetCol5000-C-FC.

The temperature and

humidity thresholds are

improper.

Alarms, such as full

water, in-cabinet

overflow, smoke sensor,

and no refrigerant output

are generated.

Ensure that the jumper cap is on

the right two pins.

Check that the chilled water valve

plug is correctly installed.

Replace the chilled water valve.

Check whether the ambient

temperature of the humidity and

temperature sensor is too high.

Ensure that the humidity and

temperature sensor is located at a

proper position. If the position is

proper but the fault persists,

replace the humidity and

temperature sensor.

Adjust the temperature and

humidity thresholds.

Check the alarm causes and clear

the alarm manually.

The humidity and

temperature sensor

cannot detect the

humidity and

temperature.

Parameter settings on

the controller are

incorrect.

DIP switches of the

humidity and

temperature sensor are

incorrectly set.

The humidity and

temperature sensor is

faulty.

Check that the humidity and

temperature sensor is enabled on

the controller.

Check that DIP switches of the

humidity and temperature sensor

map the corresponding aisle.

If the fault persists after the

preceding operations, replace the

humidity and temperature sensor.

The air return

temperature is high

or the fan

rotational speed is

fast. (The

temperature

fluctuation exceeds

± 1°C.)

Proportional, integral and

derivative (PID) control

related parameters are not

set properly.

Decrease the Kp value by 0.01 and do

not set Kp to a much smaller value.

Ensure that temperature fluctuation is

less than ±1°C.

Condensate water

exists on the

surfaces of the

front or rear

panels.

The operating

environment of the

NetCol5000-C-FC is

overhumidity.

The temperature

threshold is set to a

Enhance the airtightness of the

equipment room.

Adjust the temperature and

humidity thresholds.


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much smaller value.

6.4 Parts Replacement

6.4.1 Replacement Requirements

Remove the cabinet front or rear door when replacing a component in the cabinet.

Ensure that a spare component is the same model as the faulty one is prepared before

replacing the faulty component.

Before removing cables from a faulty component, mark the cables with their

corresponding ports numbers for later connection.

Ensure that the cables are connected to the spare component properly.

Do not install or remove power cables when the device is on. Transient contact between

the core of the power cable and the conductor may generate electric arcs or sparks, which

may cause fire or hurt eyes.

Before installing or removing the power cable, turn off the power switch.

Before connecting a power cable, check that the label on the power cable is correct.

During the installation of AC power supply facilities, follow the local safety regulations.

When operating the high-voltage and AC-powered facilities, use dedicated tools.

6.4.2 Replacing Components in the Electrical Control Box

Prerequisites Components in the electrical control box, including the controller, AC contactor,

transformer, fuse, or fuse holder need to be replaced.

A spare and functional component is available.

Context

The control function of the NetCol5000-C-FC is unavailable.

Recommended tool: Phillips screwdriver (M6).

Preparations: remove the rear door, and power off the electrical control box.

Procedure

Step 1 Remove the rear door and air filters, remove the protective panel of the electrical control box

(as shown by 1 and 2 in Figure 6-2), remove all the terminals on the side panels.


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Figure 6-2 Replacing components in the electrical control box

Step 2 Loose two screws at the upper part of the electrical control box. Pull the electrical control box

upwards, and pull it out along the guide rails, as shown by 3 and 4 in Figure 6-2, and place it

on the floor.

Step 3 Loosen the screws on the electrical control box cover manually and remove the fault

component.

Step 4 Replace the component.

Step 5 Connect cables according to the electric diagram and labels.

Step 6 Install the electrical control box, air filters, and rear door in the rack in sequence.

----End

6.4.3 Replacing an Air Filter

Prerequisites The air filter needs to be replaced.

The spare and functional air filters are available.

Context

Preparations: maintain from the rear door.


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Procedure

Step 1 Unlock the rear door and pull the rear door upwards to remove the rear door from the cabinet.

Step 2 Rotate the baffle plate and remove the air filter. For details, see 3.5 Checking the Pressure.

Step 3 Replace the air filter and fix the baffle plate of the air filter.

Step 4 Insert the lower part of the rear door into the original position, install the upper part of the rear

door, and lock the rear door.

Step 5 Tap Maint > Performance Maint on the home screen to enter the performance maintenance

screen, and clear accumulated running time of the air filter.

----End

6.4.4 Replacing a Condensate Pump

Prerequisites The condensate pump needs to be replaced.

A spare and functional condensate pump valve is available.

Context

Recommended tool: Phillips screwdriver.

Preparations: maintain from the rear door, and power off the condensate pump.

Procedure

Step 1 Remove the rear door and air filters.

Step 2 Disconnect all circuit breakers.

Step 3 Remove bolts on the condensate pump using a Phillips screwdriver, as shown in Figure 6-3.


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Figure 6-3 Removing the bolts on the condensate pump

Step 4 Remove the condensate drainpipes and control cables.

Step 5 Remove the screws fastening the condensate pump using a Phillips screwdriver and remove

the condensate pump, as shown in Figure 6-4.

Figure 6-4 Replacing the condensate pump

Preheat the condensate pump drain pipes before removing them to make them plug easier.


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Do not reverse the condensate pump input cable when connecting.

Step 6 Install a new condensate pump.

Step 7 Install the rear door and air filters.


screen. Clear total runtime of the condensate pump and the run times of the two condensate

pumps.

----End

6.4.5 Replacing a Fan

Prerequisites The fan needs to be replaced.

A spare and functional fan is available.

Context

The fan supports to be replaced during powering on.


Preparation: maintain from the front door.

Procedure

Step 1 Unlock the front door and pull the door forwards until the upper part of the front door is

removed from the cabinet. Remove cables to the controller.

Step 2 Pull the door upwards to remove the lower part of the front door from the cabinet.

Step 3 Remove the four screws fastening the fan using a Phillips screwdriver and remove the faulty

fan, as shown in Figure 6-5.

Align the fastener and positioning pin at the bottom of the fan with related holes on the

NetCol5000-C-FC, and push the fan into the NetCol5000-C-FC gently to ensure that cables to

the fan are securely connected and the fan is working properly.


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Figure 6-5 Replacing the fan

Step 4 Replace the fan and fix the new fan to the support using a Phillips screwdriver.

Step 5 Insert the lower part of the front door to the original position.

Step 6 Connect the signal cables, and lock the front door.


screen, and clear accumulated running time of the fan.

----End

6.4.6 Replacing a Water Sensor

Prerequisites The water sensor needs to be replaced.

A spare water sensor is available.

Context


Preparations: maintain from the rear door.

Procedure

Step 1 Remove the rear door and air filter.

Step 2 Remove signal cables from the water sensor.

Step 3 Remove screws fastening the water sensor and metal sheet components using a Phillips

screwdriver and remove the water sensor and metal sheet components, as shown in Figure

6-6.


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Figure 6-6 Replacing a water sensor

Step 4 Replace the water sensor and connect control cables to the new water sensor.

Step 5 Secure the screws fastening the water sensor using a Phillips screwdriver.

Reserve 5 mm distance between the water sensor and the cabinet bottom.

Step 6 Install the air filters and rear door.

----End

6.4.7 Replacing an Air Exhaust Temperature Sensor

Prerequisites The air exhaust temperature sensor needs to be replaced.

A spare and functional temperature sensor is available.

Context

Recommended tools: diagonal pliers and cable ties.


Procedure

Step 1 Remove the front door and signal cables of the controller.

Step 2 Remove components of the fans (the second and the eighth from up to bottom).


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Step 3 Remove the cable ties fastening the air exhaust temperature sensor.

Step 4 Remove the waterproof plug of the air exhaust temperature sensor probe and replace the

probe, as shown in Figure 6-7.

Figure 6-7 Replacing the air exhaust temperature sensor

Step 5 Use the cable tie to fix the new air exhaust temperature sensor to the original position.

Step 6 Reconnect the waterproof plug of the temperature sensor probe.

Step 7 Install the fan components.

Step 8 Connect the signal cables to the controller and install the front door.

----End

6.4.8 Replacing an Air Intake Temperature Sensor

Prerequisites The air intake temperature sensor needs to be replaced.


Context

Recommended tools: diagonal pliers and cable ties.


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Preparation: maintain from the rear door.

Procedure


Step 2 Use a Phillips screwdriver to loosen the R-shaped cable pipe clamp fastening the temperature

sensor on the rear door post and remove the air intake temperature sensor, as shown in Figure

6-8.

Figure 6-8 Air intake temperature sensor

Step 3 Remove the waterproof plug of the temperature sensor probe and replace the probe.

Step 4 Secure the new air intake temperature sensor to the original position using the cable pipe

clamp and fix the temperature sensor probe using the R-shaped cable pipe clamp.

Step 5 Reconnect the waterproof plug of the temperature sensor probe.

Step 6 Install the air filters and the rear door.

----End

6.4.9 Replacing a Water Inlet or Outlet Temperature Sensor

Prerequisites The water inlet or outlet temperature sensor needs to be replaced.



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Context

Recommended tools: needle-nose pliers.


Procedure


Step 2 Cut the heat insulation cotton wrapped around the pipes.

Step 3 Use a needle-nose pliers to clip out spring tongues fastening the temperature sensor and

remove the water inlet or outlet temperature sensor, as shown in Figure 6-9.

Figure 6-9 Replacing the water inlet or outlet temperature sensor

Step 4 Remove the waterproof plug of the temperature sensor probe.

Step 5 Insert the spring tongues of the temperature sensor to the sleeve and then insert the

temperature sensor probe into the sleeve.

Insert the spring tongues firmly and seat in close connection with the sleeve. Avoid loose to

affect the measured temperature.


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Step 6 Reconnect the waterproof plug of the temperature sensor probe and wrap the temperature

sensor pipes with insulation cotton.


----End

6.4.10 Replacing a Monitoring Module

Prerequisites The monitoring module needs to be replaced.

A spare and functional monitoring module is available.

Context


Procedure


Step 2 Remove cables from the monitoring module front panel.

Step 3 Push up the buckle button on the monitoring module, as shown in 2 of Figure 6-10.

Figure 6-10 Replacing the monitoring module

Step 4 Pull out the buckle, as shown in 2 of Figure 6-10, and then pull out the monitoring module

from plug-in frame.


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Make sure the buckle is on the lower right side when insert a new rectifier module.

Step 5 Replace the monitoring module, insert the new monitoring module to the corresponding slot

of the power distribution subrack, and connect cables to the monitoring module.

Step 6 Push the spare monitoring module to the plug-in frame and push downward the buckle button

to lock the monitoring module.


----End

6.4.11 Replacing a Rectifier

Prerequisites The rectifier needs to be replaced.

A spare and functional rectifier is available.

Context

Preparations: Maintain from the rear door, and power off the rectifier.

Procedure


Step 2 Push up the buckle button on the power distribution subrack, as shown in 1 of Figure 6-11.


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Figure 6-11 Replacing the rectifier

Step 3 Pull out the buckle, as shown in 2 of Figure 6-11, and then pull out the rectifier module from

plug-in frame.

Make sure the buckle is on the lower right side when insert a new rectifier module.

Step 4 Replace the rectifier and insert the new rectifier to the corresponding slot of the power

distribution subrack.

Step 5 Push the spare rectifier module to the plug-in frame and connect the cable, and then push

downward the buckle button to lock the rectifier module.


----End

6.4.12 Replacing a Chilled Water Valve

Prerequisites The chilled water valve needs to be replaced.

A spare and functional chilled water valve is available.

Context

Recommended tools and materials: Phillips screwdriver, flat-head screwdriver, torque wrench

and insulation cotton


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Preparations: stop supply chilled water and power, adjustment the chiller water valve

openness to 0

Procedure


Before removing the cables, you are advised to mark the cables with their corresponding ports

numbers for later connection.

Step 2 Remove the screws at the bottom of the chilled water valve controller, the cover, and the

signal and power cables.

Step 3 If only the chilled water valve controller needs to be replaced, remove the screws fastening

the chilled water valve controller using the flat-head screwdriver and remove the controller

according to the arrow direction.

Step 4 If the chilled water valve needs to be replaced, cut the insulation cotton wrapped the chilled

water valve, and remove the four screws that connect the chilled water valve and the support

using a Phillips screwdriver.

Step 5 Remove the chilled water valve controller, shaft, and support.

Step 6 Remove the three adjustable nuts that connect the chilled water valve and the pipe using a

torque wrench, and remove the chilled water valve, as shown in Figure 6-12.

Figure 6-12 Replacing the chilled water valve

(1) Screws fastening the chilled

water valve controller

(2) Screws connecting the chilled

water valve and the support

(3) Adjustable

nuts


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Step 7 Replace the chilled water valve controller or the chilled water valve.

Step 8 Fasten the adjustable nuts using a torque wrench to a torque of 60 N•m and wrap the chilled

water valve with insulation cotton.

If only the chilled water valve controller is replaced, only the screws fastening the

controller needs to be secured and the securing card at the bottom needs to be tightened.

If the chilled water valve is replaced, install the new chilled water valve according to the

preceding steps.

Step 9 Connect cables to the chilled water valve controller and install the controller shell.

Step 10 Install the air filter and rear door.


screen, and clear accumulated running time of chilled water valve.

----End

6.4.13 Replacing a Float

Prerequisites The float needs to be replaced.

A spare and functional float is available.

Context

Recommended tool: open-end wrench.


Procedure


Step 2 Remove terminals from the float.

Step 3 Remove the nuts fastening the float using the open-end wrench and remove the float, as



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Figure 6-13 Replacing the float

Step 4 Replace the float and connect the connectors.

Corresponding to the high and low float when plugging (the high position is the high float, the

low position is the low float).

Step 5 Fasten the nuts using the open-end wrench and level the float.

Make sure the float is level and the float valve is in the vertical position.



screen, and clear accumulated running time of the float.

----End

6.4.14 Replacing a Differential Pressure Sensor

Prerequisites The differential pressure sensor needs to be replaced.

A spare and functional differential pressure sensor is available.


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Context



Procedure


Step 2 Remove the differential pressure tube on the differential pressure sensor.

Step 3 Open the differential pressure sensor shell cover and remove the signal cables.

Step 4 Use the Phillips screwdriver to loosen the three screws fastening the differential pressure

sensor and remove the faulty differential pressure sensor, as shown in Figure 6-14.

Figure 6-14 Replacing the differential pressure sensor

Step 5 Replace the differential pressure sensor and connect cables to the new differential pressure

sensor.

Step 6 Set the pressure setting of the differential pressure sensor to 200 Pa.

Step 7 Insert the differential pressure tube into the pressure detection port on the differential pressure

sensor, guarantees gas tightness.



screen, and clear accumulated running time of the differential pressure sensor.

----End

6.4.15 Replacing a Controller Panel

Prerequisites The controller panel needs to be replaced.


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A spare controller panel with the correct software version is available. If the controller

software is incorrect, upgrade the software by following the instructions in the ACC

Upgrade Guide.

Context



Procedure

Step 1 Unlock the front door and pull the door upwards to remove the upper part of the front door

from the cabinet.

Be careful not to damage the controller cables.

Step 2 Remove cables from the controller panel.

Step 3 Pull the door upwards to remove the lower part of the front door from the cabinet.

Step 4 Loosen the four screws fastening the controller panel using a Phillips screwdriver. Push the

controller panel from the right or left side and remove the controller panel, as shown in Figure

6-15.

Pay attention to the fasteners when pushing the controller panel from the right or left side to

prevent the controller panel from being damaged.

Figure 6-15 Replacing the controller panel

Step 5 Replace the controller panel and use the Phillips screwdriver to fix the new controller panel to

the original position.

Step 6 Insert the lower part of the front door to the original position.


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Step 7 Connect the signal cables to the controller panel, install the upper part of the front door and

lock the door.

----End


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User Manual (Full Configuration) A Acronyms and Abbreviations


A Acronyms and Abbreviations

C

CAN Controller Area Network

CFD Computational Fluid Dynamics

D

DIP Dual in-line Package

E

EC Electronic Commutation

P

PUE Power Usage Effectiveness

PID Proportional, Integral and Derivative


Product

User Manual (Full Configuration) B Glycol Adding Requirements


B Glycol Adding Requirements

Purchase glycol and corrosion inhibitor from a local qualified installation company.

Determine the glycol volume concentration based on the lowest temperature in record in

the area.

As the glycol solution is toxic, avoid skin contact with the glycol solution and splashing

it into your eyes. Dispose of the glycol solution in accordance with local laws.

To prevent glycol solution from corroding pipes and the heat exchanging coil, corrosion

inhibitor should be mixed into the glycol solution. For details about the mixing schemes,

consult glycol experts.

Check the quality of the glycol solution on a quarterly basis and evaluate the

anticorrosion effects. For details, consult local water treatment experts.

Table B-1 Glycol concentration requirements at lowest temperatures

Lowest Recorded Local Temperature

Glycol Volume Concentration

Freezing Point of Glycol Mixed Solution to Be Added

0°C 13.6% –5°C

–5°C to 0°C 22% –10°C

–10°C to –5°C 30% –15°C

–15°C to –10°C 35% –20°C

–20°C to –15°C 40% –25°C

–25°C to –20°C 45% –30°C

–30°C to –25°C 49% –35°C

–35°C to –30°C 52% –40°C

–40°C to –35°C 55% –45°C


Product

User Manual (Full Configuration) C Controller Operation Rights Configuration Table


C Controller Operation Rights Configuration Table

Users include Admin, Engineer, Operator, and Guest users. The Admin users have the highest

permission, followed by the Engineer, Operator, and Guest users. Table C-1 describes the

operation rights for each configuration item.

Table C-1 Rights configuration table

Component

Item Admin Engineer Operator Guest

Settings

>

System

Settings

>

System

Control

Monitoring

mode

√ √ - -

Max diagnos

mode

duration

√ √ - -

Unit start

delay

√ √ - -

Disallow

on/off via

EMS

√ √ - -

Main screen

startup/shutd

own

√ √ √ √

Dehumidifica

tion

√ √ - -

Anti-cond

protection

√ √ - -

Max dehumid

runtime

√ - - -

Dew/sup

water TD at

dehumi

√ - - -


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Component


Anti-cond

temp diff

√ - - -

Anti-cond

delay

√ - - -

Settings

>

System

Settings

> T/H

Sensor

T/H control

type

√ √ - -

Temp

p-coefficient

√ √ - -

Temp integ

time constant

√ √ - -

Temp diff

time constant

√ √ - -

Temp

sampling

period

√ √ - -

Temp p-band √ √ - -

Temp

deadband

√ √ - -

Return-air

temp set

point

√ √ √ -

Supply-air

temp set

point

√ √ √ -

Cold aisle

temp set

point

√ √ √ -

Hot aisle

temp set

point

√ √ √ -

Humid

p-coefficient

√ √ - -

Humid integ

time constant

√ √ - -

Humid diff

time constant

√ √ - -

Humid

sampling

period

√ √ - -


Product



Component


Humid

p-band

√ √ - -

Humid

deadband

√ √ - -

Return-air

humid set

point

√ √ √ -

Supply-air

humid set

point

√ √ √ -

Cold aisle

humid set

point

√ √ √ -

Hot aisle

humid set

point

√ √ √ -

Cold aisle

sensor 1

√ √ - -

Cold aisle

sensor 2

√ √ - -

Cold aisle

sensor 3

√ √ - -

Hot aisle

sensor 1

√ √ - -

Hot aisle

sensor 2

√ √ - -

Hot aisle

sensor 3

√ √ - -

Maint >

Sensor

Adjust

Supply-air 1

temp adj

value

√ √ - -

Supply-air 2

temp adj

value

√ √ - -

Return-air 1

temp adj

value

√ √ - -

Return-air 2

temp adj

value

√ √ - -


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Component


Cold aisle 1

temp adj

value

√ √ - -

Cold aisle 1

humi adj

value

√ √ - -

Cold aisle 2

temp adj

value

√ √ - -

Cold aisle 2

humi adj

value

√ √ - -

Cold aisle 3

temp adj

value

√ √ - -

Cold aisle 3

humi adj

value

√ √ - -

Hot aisle 1

temp adj

value

√ √ - -

Hot aisle 1

humi adj

value

√ √ - -

Hot aisle 2

temp adj

value

√ √ - -

Hot aisle 2

humi adj

value

√ √ - -

Hot aisle 3

temp adj

value

√ √ - -

Hot aisle 3

humi adj

value

√ √ - -

Supply-water

temp adj

value

√ √ - -

Return-water

temp adj value

√ √ - -


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Component


Settings

>

System

Settings

>

Indoor

Fan

Min speed √ √ - -

Max speed √ √ - -

Max dehumid

speed

√ - - -

Min ret/sup

air temp diff

√ √ - -

Max ret/sup

air temp diff

√ √ - -

Normal

adjust period

√ - - -

Max adjust

step

√ - - -

Settings

>

System

Settings

> CW

Valve

Max adjust

step

√ - - -

Temp diff at

no refrig

√ - - -

Min valve

opening for

dehum

√ - - -

Anti-cond val

regu ratio

√ - - -

Settings

>

Commo

n

Settings

Protocol √ √ - -

Baud rate √ √ - -

Comm

address

√ √ - -

Settings

>

Basic

Settings

Date & Time

Settings

√ √ √ -

"√" indicates that a user can set or modify this parameter. All users can query the parameter settings.

Sta

tus

Ope

ratin

g In

foD

evic

e D

etai

ls

Hum

idity

Tem

pera

ture

Running

EM

S

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User Manual (Full Configuration) - Huawei Technical Support

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