Conair MPW User's Guide download pdf (Page 25)

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Start‐Up

Everyunitisfactorysettodeliverchilledwaterinaccordancewiththestandardoperating

specificationsforthatparticularchiller.Duetovariablesinvolvedwithdifferentapplications

anddifferentinstallations,minoradjustmentsmayberequiredduringtheinitialstart‐upto

ensureproperoperation.Thefollowingstartupprocedureshouldbe followed insequence.If

troubleisencounteredduringstart‐up,thefaultcanusuallybetracedtooneofthecontrolor

safetydevices.Thisoutlinecanbeusedasachecklistfortheinitialstart‐upandforsubsequent

start‐upsifthechilleristakenoutofserviceforaprolongedperiodoftime.

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1. Assurethemainpowersourceisconnectedproperly,thatitmatchesthevoltageshownon

thenameplateoftheunit,andthatitiswithinthevoltageutilizationrangegiveninthe

ElectricalPowerSectionofthismanual.Electricalphasesequencemustbecheckedat

installationandpriortostart‐up.Operationofthecompressorwithincorrectelectrical

phasesequencingwillresultinmechanicaldamagetothecompressors.Thephasingmust

becheckedwithaphasesequencemeterpriortoapplyingpower.Thepropersequence

shouldread“ABC”onthemeter.Ifthemeterreads“CBA”,openthemainpowerdisconnect

andswitchtwolineleadsonthelinepowerterminalblocks(ortheunitmounted

disconnect).Allcomponentsrequiringelectricpowerarewiredin‐phaseatthefactory.Do

notinterchangeanyloadleadsthatarefromtheunitcontactorsorthemotorterminals.

Onceproperpowerconnectionandgroundinghavebeenconfirmed,turnthemainpower

on.

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WARNING:ItisimperativethatL1‐L2‐L3areconnectedintheA‐B‐Cphasesequencetoprevent

equipmentdamageduetoreverserotation.

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Note:Themainpowermustbeonfor24hourspriortostartingthecompressortoallowthecrankcase

heatertosufficientlyvaporizeany

liquidrefrigerantthatmaybepresentinthecompressor.

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2. Checktomakesurethatallprocesschilledwaterpipingconnectionsaresecure.Openthe

cabinetandfillthechilledwaterreservoirwiththeproperwaterorwater/glycolsolution.

Useglycolwithacorrosioninhibitoronly.SeeTable3(onthenextpage)forrecommended

glycolsolutions.25%glycol

isrecommendedevenifrunningattemperatureshigherthan

25°Ftohelpprotecttheevaporatorfrompotentialfreezing.

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3. (EP2WModelsOnly)Checkthecondenserwaterlinestomakesureallconnectionsare

secure.Makesuresufficientcondenserwaterflowandpressureareavailable,the

condenserwatersupplyisturnedon,

andallshut‐offvalvesareopened

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4. (EP2RModelsOnly)Checktherefrigerantlinestomakesureallconnectionsaresecureand

thataproperevacuationofthechiller,thefieldpiping,andtheremotecondenserhas

occured.

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Conair MPW User's Guide Page 25

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