MR050A SERIES DEHYDRATOR USER MANUAL

MR050A SERIES DEHYDRATOR

USER MANUAL

BulletinAE01B-A0532-001 Rev:A © 2008 CommScope, Inc. All rights reserved (06/08)

MR050A SERIES DEHYDRATOR USER MANUAL

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SECTION 1 GeneralInformation 3 Introduction 3 Description 3 Operation 3 AlarmsOption 3 MultipleAlarmOption 4 Specifications 5

SECTION 2 Installation 6 UnpackingandInspection 6 ControlsandDisplays 6 PowerConnections 7 ACPower 7 DCPower 7 ConnectingLowPressureAlarmOutput 8 ConnectingDehydratortotheTransmissionLine 8 PurgingtheTransmissionLine 9

SECTION 3 Maintenance 9 Maintenance 9 PreventiveMaintenance 9 DesiccantReplacement 9 AnnualMaintenance 9 PartsReplacement 9 ServiceRestoration 10

SECTION 4 Troubleshooting 11 Problem/SolutionTable 11 SchematicDiagramMR050A-31015 13 AlarmSchematicDiagramwithAllOptionMR050A-31315 15 PneumaticDiagram 16

SECTION 5 ReplacementParts 17

SECTION 6 CustomerService 17 Introduction 17 InCaseofTrouble 17 InitialStepsbyAndrew 18 ReturnGoodsInstructions 18 RepairCenterProcess 18 LoanerUnits 18 Warranty 19


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1.1 Introduction

Thismanualcontainstheinformationyouneedtoinstall,operate,andmaintainyourMR050ASeriesDryLine®dehydrator.Pleasetakethetimetoreadthismanualbeforeattemptingtooperateorservicetheunit.

1.2 Description

MR050ASeriesdehydratorsprovidedryairforpressurizingsmall(upto280liters,or10cubicfeet,involume)antennaandtransmissionlinesystems.Thedehydratorsproduce-40ºC(-40ºF)dewpointdryairatanominalrateof1.4liters(0.05cubicfeet)perminuteuptoatotalof8495Iiters(300cubicfeet)onasingledesiccantcanister.

Eachdehydratorconsistsofanelectrically-drivenaircompressor,adesiccantcanister,anautomatictransmissionlinepressuresensingsystem,andalarmoutputshousedinarigidmetalchassis.Itisdesignedtomountdirectlytotherack,directlyonawall,orasafree-standingunit.Thefrontpanelfeaturesacontrolinterfacewithdisplayforalarmsandpressure.Foreasyserviceability,powerconnections,alarmoutputconnections,andthedesiccantcanisterareeasilyaccessiblefromthefrontoftheunit.

TheMR050Amaintainstransmissionlinepressuresbetween2.0and3.4kPa(0.3and0.5psig).Itisintendedforusewithhighperformancemicrowaveantennasandearthstationantennas.

1.3 Operation

MR050Aseriesdehydratorsincludeacompressor,colorindicatingdesiccant,highandlow-pressuresensors,andalow-pressurealarmsensor.

Whensystempressurefallstoapresetlowlimit,thelow-pressuresensoractivatesthecompressor.Airischanneledthroughadesiccantcanister,wheremoistureisadsorbed.Theairexitsthedryingcanisterat-40°C(-40°F)dewpoint.Itisthenchanneleddirectlytoaninternal4-portmanifold

. Whensystempressurereachesapresethigh

limit,thehigh-pressuresensorshutsoffthecompressor.Acheckvalvepreventssystemdryairfromretreatingbackthroughthecompressor.

Ifsystempressurefallssignificantlybelowthelow-pressuretriggerpoint,thelow-pressurealarmsensorwillactivateanalarmcontact.Thisalarmisanindicationofasignificantsystemleakoradehydratorfailure.

1.4 Alarms

TheMR050AoffersLowPressureandPowerFailalarmsasastandardfeature.Alarmconditionsareindicatedonthedisplay.Alarmsareoutputasacommonsummaryalarm,withaformCdrycontact.Thealarmissetforcontinuityonalarm.


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1.4.1 Multiple Alarm Option

ThisoptionalassemblyisdesignedtoprovidetheadditionalHighHumidityalarmtoAndrewDehydrators.AllalarmsareFormCdrycontactsandarefactorysetforcontinuityatalarm(mainspowerfailalarmopensatalarm).

Thisoptionalassemblywillalsoindicatediscretealarmsonthedisplay,andprovideindividualcontactsandconnectionsfordiscretealarms.

Theexternalalarmmonitoringsystem(suppliedbyothers)isconnectedtotheterminalstriplocatedonthefrontofthecabinet.Asmallslottedscrewdriverisnecessarytomaketheconnections.

Alarm Definitions:

Power Fail: Activatesopenwhenpowerisremovedfromthedehydrator.Thisincludesturningthepoweroffattheswitch.

High Humidity: Activateswhensystemordehydratoroutputhumidityriseabove7.5%relativehumidity.Atinitialinstallation,thisalarmwillcontinuetoalarmuntilthesystemhasbeenproperlypurged.

Excess Run: Factorysetruntimeissetinaccordancewiththenormalruntimeforthedehydratorapplication.Selectabletimesare30minutes,withthe10minuteasdefaultontheMR050A.

Low Pressure: Ifsystempressurefallsbelowthelow-pressuretriggerpoint,thelow-pressurealarmsensorwillactivateanalarmcontact.Thisalarmisanindicationofasignificantsystemleakoradehydratorfailure.

Alarm Factory setting Where To ResetSummary Normally TB4onControlAlarm Open(N.O.) Board

Multiple Alarms

Alarm Factory setting Where To Reset

LowPressure Normally JumperJP4on Open(N.O.) AlarmPCB A-B

Mains Normally JumperJP3on(PowerFail) Closed(N.C.) AlarmPCB B-C

ExcessRun Normally JumperJP1on Open(N.O.) AlarmPCB A-B

HighHumidity Normally JumperJP2on Open(N.O.) AlarmPCB A-B

Term. Function Wire Color

1 PowerFailCom Black

2 PowerFailAlarm Red

3 HumidityCom Green

4 HumidityAlarm Brown

5 ExcessRunCom Blue

6 ExcessRunAlarm White

7 LowPress.Com Gray

8 LowPress.Alarm Orange

Figure 1

Summary AlarmMulti Alarm

Changing Alarm Outputs:


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1.5 Specifications MR050A DehydratorCutOutPressure 35kPa(0.5PSIG)CutInPressure 2kPa(0.3PSIG)

Outputcapacity 85SLPH(total,approx.)1.4SLPM(3.0SCFH0.05SCFM)

OutputDewPoint, -40°C(-40°F)orbetter

OperatingTemperature 1°to+40°CRange (34°to+104°F)

LowPressureAlarm 1.4kPa(0.2PSIG)

ElectricalInput 24/48Vdc 115/230Vac,50/60Hz (withac-to-dcadapter)

PowerConsumption 11watts

OutputConnectors 3/8”polytube,compression

Dimensions 450mmWx132mmHx216mmD

(17.7”Wx5.2”Hx8.5”D)

Weight 7.26kg(16lbs)

Optional Alarms

HighHumidityAlarm 7.5%RH,factorysetpoint

PowerFailAlarm Lossofinputpower

ExcessRun 30minutes,factoryset

HighPressAlarm 5.5kPa(0.8PSIG)

Figure2

JP1Excess Run

JP2High Humidity

J P4Low Pressure

J3Alarm

Connection

J P3Power Fail

J5HUM Bypass

J4Humidity Sensor

J2Main Power

J1Alarm to Control

FUSE5 amp, 250V


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InstallationSection 2

Mode 1: Displayspressureandtotalrunhours.

Mode 2: Displayspressureandtotalrunhours,flashescurrentcondition.

Mode 3: DisplayslastONandlastOFFtimes.

ON/OFFSwitch TogglesunitconditionONandOFF.

ModeSwitch Togglesbetweendisplaymodes.

2.1 Unpacking and Inspection

OpenCarton

Removethetoppieceofclosed-cellfoampackaging.Carefullyremovetheinstallationaccessories,manual,anddehydrator.Checkthedehydratorforshippingdamagesuchasdentsorlooseparts.

2.2 ControlsandDisplays

Familiarizeyourselfwiththecontrolsanddisplayspriortoinstallingortestingthedehydrator.

ON/OFFSwitch

ModeSwitch


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2.3 InstallingtheDehydrator

2.3.1 19”RackMountingorsetonshelf

2.4 Power Connections

Confirmyourdehydratorelectricalinputmatchestheavailablepower.

24 Vdc/48 VdcMR050A-31015MR050A-31315

2.4.1 AC Power

ACunitscanbeconnectedintoastandard15Amppowerreceptacleofthepropervoltageviathepowersupply.Makesurethepowercircuitisproperlygrounded.Twopowercordsaresupplied,one115VACAmericanandone230VACInternational.

CAUTION:

Check the antenna and transmission line system pressure rating before connecting the dehydrator to the system.

TB1PIN 1 – DC – PIN 2 – 24 V JUMPERPIN 3 – DC MOTOR B PIN 4 – DC + PIN 5 – 24 V JUMPER PIN 6 – DC MOTOR

FUSE5 amp, 250V

Blue Tube Low Pressure

TB4Alarm Board

TB3Summary Alarm

Whitestripewire:+


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Note:

If the transmission lines have not been purged, continue with section 2.7. Otherwise proceed to section 3.

2.7 Purging the Transmission Line

Airinthetransmissionlinesystemmustbereplacedwithdryairtoensuresatisfactoryoperationofthetransmittedsignal.

1. Determinethetotalsystemvolume.

2. Dividethesystemvolumebytheflowrateofthedehydrator(3.0SCFH)todeterminethenumberofhoursneededforthepurgecycle.

3. Openthefarendofthetransmissionline.

4. Operatethedehydratorforthreepurgecycles.

Ifitisnotpossibletoopenthefarendofthetransmissionline,followthesesteps:

1. Connectthedehydratortothetransmissionlineandpressurizethesystem.Thesystempressureshouldreach0.5PSIG.

2. Wait15minuteswhiletheairabsorbsmoistureinthesystem,thendisconnectthedehydratorfromthetransmissionlineandallowtheairtovent.

3. Repeatsteps1and2twelvetimestopurgethesystem.

Test the Dehydrator

TurnthedehydratorONandchecktheoutputportontherearoftheunittomakesureairisflowing.

2.5 Connecting the Alarm Outputs

Toconnectthealarms,locatethealarmoutputterminalblockonthefrontoftheunit.

Optionalalarms(ifpurchased)willalsobelocatedonthisterminal(seesection1.4forterminalnumbers).

2.6 Connecting Dehydrator to the Transmission Line

Insertoneendofthe3/8”polytubefeedlinetubingintothecompressionfittingononeofthedehydratoroutputports.Tightensecurelywitha9/16”wrench.Becarefulnottoovertighten.Connecttheotherendofthepolytubetothetransmissionline.

Summary AlarmMulti Alarm


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MaintenanceSection 3 3.0 Maintenance

TheMR050ADehydratorrequiresrelativelylittlemaintenancetoensuresatisfactoryoperationoverlongperiodsoftime.Thissectionoutlinestherecommendedannualpreventivemaintenancefortheunitandthesuggestedoverhaulforevery6000hoursofcompressoroperation.

3.1 Preventive Maintenance

TheannualmaintenanceofaMR050Aconsistsofapreventativemaintenanceinspectionofthedehydrator.

Thesetaskscaneasilybeperformedinthefieldwiththeunitconnectedtothetransmissionlinesystem.

Inadditiontotheannualinspection,acompleteoverhaulisrecommendedevery6000hoursorsooneriflocalconditionswarrant.

3.2 Desiccant Replacement

Asthedesiccantbecomessaturatedovertime,itwillchangefrombluetopink.Whenthedesiccantisexhausted,therewillbeadegradationofperformance.Inordertoreplacethedesiccant,simplyturntheunitoff,disconnectthedesiccantcanisterfromthepneumaticlines,andreplacetheentirecanister.

3.3 Annual Inspection

Inspectionincludescheckingforlooseordamagedhoses,fittings,andelectricalconnections.Removethedesiccantcanisterandverifythattherearenoleaksinthepneumaticlines.

Warning:

Electrical Hazard! Unplug power cord before servicing unit.

Check the electrical connections.

CheckthescrewatthepowerinputconnectortoensurethattheACpowercordissecurelyterminated.Checkthescrew-inalarmterminalstoensurethatallwireconnectionsaretight.

Alooseordamagedconnectionmayresultinerraticoperationandunnecessarydowntime.Refertothetroubleshootingsectionifanelectricalproblemisencountered.

Check the ground wire.

Checkthatanelectricalsafetygroundisinstalledonthestudontherearofthedehydrator.Thisconnectionpointisadjacenttothepowerinputconnector.(Itisintendedtobecustomerinstalledinthefield.)

Checkthehourmeteronthefrontpaneltodeterminethedutycycleofthedehydrator.

Ifthedehydratorhasbeenrunningformorethan10%ofitsinstalledtime,checkthesystemsforleaks.

3.4 Parts Replacement

WhentheMR050Adehydratorunitisinneedofservice,themaincomponentsaresimplyreplaced.Thecompressor,desiccantcanister,andcontrolmoduleareallmeanttobereplaceableparts.ThepartscanbepurchasedfromAndrewCorporationforfieldreplacement,ortheunitcanbesenttotherepaircenterforcomponentreplacement.


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Unit Shutdown and Removal

InordertoperformanoverhaulontheMR050A,theunitmustbeturnedoffandremovedfromservice.Asthisisbeingdone,thelowpressurealarmmayactivatethroughareportingalarmsystem.Personnelmonitoringsuchanalarmshouldbenotifiedinadvancesothattheyareawareofthefactthatserviceisbeingperformed.Itisalsonecessarytodisconnectthedehydratordryairoutputfromthewaveguidesystemduringtheoverhaul.

Removethechassistopandfrontpanelsforoverhaul.

1. Unplugtheunitfromthepowersupply.

2 Followtheinstructionsincludedinthecompressorreplacementkit.Whenthereplacementiscomplete,reinstall.

3.5 Service Restoration

RECOMMENDATION:

Ifthedehydratoroverhaulprocesshastakenmorethanafewhours,itisrecommendedthattheunitberunforonehourintotheroom,topurgethemembranedryerandtankofanyacquiredmoisture,beforereconnectingtothetransmissionlinesystem.


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TroubleshootingSection 4 Ifyouexperiencedifficultywithyourdehydrator,usethetroubleshootingproceduresdescribedbelow.

Caution: Electrical troubleshooting requires access to potentially dangerous voltages and should only be performed by a licensed electrician

Problem/Condition Solution

Dehydratordisplaydoesnotlight,unitdoesnotrun.

Low-pressurealarmactivated.

CompressordoesnotturnOFF.

Ifthedisplaylightfailstolight,makesuretheunitispluggedinandpoweroutletisoperating.

Ifyoustillhavenolight,unplugtheunit,removetheunitcoverandcheckforlooseconnections.Refertothewiringdiagramforproperconnections.

ChecktoassurethatthefuseisOK.ChecktoassurethatproperACvoltageisbeingsuppliedtotheinput.

Plugtheunitoutputwithfingerandobservepressuregauge.Thepressuregaugelineshouldreadapproximately0.5psiandthealarmshouldclear.Ifalarmdoesnotclear,removecoverandverifytubingandwiringconnectionsaresecure.

Ifthepressuredoesnotremainconstantafterpluggingtheoutput,applyleakdetectortoisolatetheleakinthedehydrator(exercisecarewhenapplyingsolutionnottowetwiringorelectronics).

Withdehydratorisolatedfromtransmissionline,observepressureintransmissionline.Ifpressuredrops,usealeakdetectorsolutiontolocateleaksinthetransmissionline.Repairleaksifpossible.

IftheproblempersistscontactAndrewCustomerService.Checkthedisplayonthecontroller.ToggletheON/OFFswitch(leftofthedisplay).Checkinputpowerpolarityandvoltageperwiringdiagram.


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Replacement PartsSection 5

Customer ServiceSection 6

ThefollowingisalistofthereplacementkitsfortheMR050ASeriesdehydrators:

6.0 Introduction

Andrewprovidesin-warrantyandout-of-warrantyrepairsaswellasdehydratorandcompressoroverhaulsfromseveralRepairCenters.CoordinationoftheseservicesisprovidedthroughthenearestSalesOfficeorCustomerServiceCenter.TheCenterisalsopreparedtohelpyouwiththefollowing:TechnicalAssistanceTroubleshootingRepairsLoanerUnitsSparePartsInstallationMaterialsSystemAccessories.

6.1 In Case of Trouble

Thefirststepyoushouldtakeiftroubledevelopsusingadehydratoristoreadtheoperatorsmanualandfollowthetroubleisolatingproceduresgiveninit.

Ifthestepsinthemanualdonotidentifyandremedytheproblem,thencontactanAndrewCustomerServiceCenterfor24-hourtelephoneassistance.RecordtheModelNumber(e.g.MR050A)andSerialNumberfromtheproductlabel,asyouwillbeaskedforthesewhenyoucall.Twomainlocationsarecurrentlyavailabletohelp:

inNorthAmerica---1-800-255-1479

inEurope---+441592782612

anyLocation(toUSA)(708)349-3300

IfyoufinditeasiertodescribeyourtroublesbyFax,thenthefollowingnumbersarealsoavailable:

inNorthAmerica---1-800-349-5444(Faxonly)

inEurope---+441592782380(Faxonly)

anyLocation(toUSA)(708)349-5410(Faxonly)

Andrew Corporation 0500W.153rdStreet OrlandPark,IL60462USA

DesiccantKitMR050A-KIT-DSCNT

CompressorKitMR050A-KIT-CPRSR

ControllerKitMR050A-KIT-CNTLR

Check website for latest updates to the manaul and parts lists.


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6.2 Initial Steps by Andrew

Whenyourcallorfaxcommunicationisreceived,theAndrewstaffwillworkwithyoutopinpointthepossiblecauseoftrouble.Ifthepressurizationequipmentissuspect,theywill:

• askforyourunitModelNumberandSerialNumber

• checkthewarrantystatusoftheunit

• advisetheavailabilityofaloanerunitprovideofthecostforinspectionandrepairs,iftheunitisout-of-warranty

• faxaReturnGoodsAuthorizationSheettoyou.

6.3 Return Goods Instructions

AfteryouhavecontactedAndrewandreceivedaReturnGoodsAuthorizationNumber(RGN),youwillneedtotakethefollowingstepstosendthefaultyunittoaRepairCenter:

• makeacopyoftheReturnGoodsAuthorizationSheetthatwasfaxedtoyou

• writeabriefdescriptionofthetroubleyouareencounteringandattachthistothecopyofthesheet

• packtheunit(withatleast4-inchesofprotectivepackagingonallsides)

• enclosetheauthorizationsheetandtroubledescriptionwithinthebox

• encloseapurchaseorderorothermethodofpaymentfornonwarrantyrepairs.

• marktheoutsideoftheboxwiththeRGN

• returntheboxtotheRepairCenteraddresslistedontheauthorizationsheet. Ifyouhavesavedtheoriginalpackagingthatcamewiththeunit,useittoreturnthedehydratorforrepair.Ifaloanerunit(ofthesametype)wassuppliedbyAndrew,usetheloanerunitboxtoreturntheoriginaldehydrator.

6.4 Repair Center Process

TheAndrewDehydratorRepairCenterwillreceiveyourunitandinspectitforanytransportdamage.TheunitwillthenbeanalyzedfortroublesusingthedescriptionyouhavesuppliedandthespecializedexperiencetheRepairCenterstaffhavewithdehydrators.

Iftheunitisin-warranty,repairsaremadeatnochargeandtheunitwillbereturnedtoyoubythesamemodeoftransportasitwasreceived.

Iftheunitisin-warranty,butnoproblemsarefound,theunitwillbethoroughlytestedbeforebeingreturnedtoyou.Anominalinspectionfeewillbechargedforthisservice.

Ifyourunitisout-of-warranty,itwillbeinspectedandrepairedforthequotedfee.

6.5 Loaner Units

TheAndrewdehydratorRepairCentersstockalimitednumberof“loaner”dehydratorunitsofbothcurrentanddiscontinuedproducts.Theseunits,whilenotnew,arestillinexcellentworkingorder.

Loanersareavailableonafirst-comefirst-servedbasis.TheyareissuedinconjunctionwiththeoriginalRGNandareinvoicedatanominalprice.YouwillneedtorequestasecondRGNtoreturntheloanerunit.AcreditmemoisissuedbytheRepairCenterwhenaloanerisreturned


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®

Andrew Corporation

Small and Medium Capacity Dehydrator and Line Monitor System

Three Year Warranty Seller warrants that any Andrew MT050, MT/XT300, MT/XT500, MR050, PMT200 and ODPMT200 series number type DryLine® Dehydrator is transferred rightfully and with good title; that it is free from any lawful security interest or other lien or encumbrance unknown to Buyer; and that for a period of thirty-six (36) months from the date of shipment or 3000 hours of actual run time, whichever shall occur first, such equipment will be free from defects in material and workmanship which arise under proper and normal use and service. Buyer's exclusive remedy hereunder is limited to Seller's correction (either at its plant or at such other place as may be agreed upon between Seller and Buyer) of any such defects by repair or replacement (with either a new unit or a factory reconditioned unit) at no cost to Buyer; provided that the cost of any transportation in connection with the return of the equipment for the purpose of repair or replacement shall be borne by Buyer. The provisions of this warranty shall be applicable with respect to any equipment which Seller repairs or replaces pursuant to it. Expressly excluded from the terms of this warranty are defects caused by: (i) faulty installation, (ii) lack of proper inspection or maintenance, (iii) and usage not in accordance with published ratings, specifications, or instructions. The provisions of this warranty shall be applicable with respect to any equipment Seller repairs or replaces pursuant to it.

SELLER MAKES NO WARRANTY, EXPRESS OR IMPLIED, OTHER THAN AS SPECIFICALLY STATED ABOVE. EXPRESSLY EXCLUDED ARE ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR PURPOSE. THE FOREGOING SHALL CONSTITUTE ALL OF SELLER'S LIABILITY (EXCEPT AS TO PATENT INFRINGEMENT) WITH RESPECT TO THE EQUIPMENT. IN NO EVENT SHALL SELLER BE LIABLE FOR SPECIAL, CONSEQUENTIAL OR INCIDENTAL DAMAGES, INSTALLATION COSTS, LOST REVENUE OR PROFITS, OR ANY OTHER COSTS OF ANY NATURE AS A RESULT OF THE USE OF THE EQUIPMENT MANUFACTURED BY SELLER, WHETHER USED IN ACCORDANCE WITH INSTRUCTIONS OR NOT. UNDER NO CIRCUMSTANCES SHALL SELLER'S LIABILITY TO BUYER EXCEED THE ACTUAL SALES PRICE OF THE EQUIPMENT PROVIDED HEREUNDER. No representative is authorized to assume for Seller any other liability in connection with the equipment.

Rev 2 0706


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MR050A SERIES DEHYDRATOR USER MANUAL

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Transcript of MR050A SERIES DEHYDRATOR USER MANUAL