User guide

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Corporate Office: 724.584.5500  Instant Access 24/7 (Parts and Service): 800.458.1960  Parts and Service: 814.437.6861
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PreventiveMaintenance
Onceyourportablechillerhasbeenplacedintoservice,thefollowingmaintenanceprocedures
shouldbeadheredtoascloselyaspossible.Theimportanceofaproperlyestablished
preventivemaintenanceprogramcannotbeoveremphasized.Takingthetimetofollowthese
simpleprocedureswillresultinsubstantiallyreduceddowntime,reducedrepaircosts,andan
extendedusefullifetimeforthechiller.
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Tomakethisassimpleaspossible,achecklistshouldbepreparedwhichliststherecommended
serviceoperationsandthetimesatwhichtheyaretobeperformed.Attheendofthissection
wehaveincludedachecklistthatcanbeused
forthispurpose.Noticethattherearelocations
forvoltagereadings,amperages,etc.sothattheycanbemonitoredovertime.Withthis
information,maintenancepersonnelmaybeabletocorrectapotentialproblembeforeit
causesanydowntime.Forbestresults,thesereadingsshouldbetakenwithafullheat
load
fromprocess,preferablywithsimilaroperatingconditionseachtime.Thefollowingisalistof
suggestedperiodicmaintenance.
OnceaWeek
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1. (Air ‐CooledUnitsOnly)Checkthesurfaceoftheair‐cooledcondensercoilfordirtand
debris.Toclean,rinsethoroughlywithwater.Milddetergentcanbeusedtoremovesmoke
andorgreasestains.
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2. ChecktomakesurethattheActualtemperatureismaintainedreasonablyclosetothe
Setpointtemperature.Ifthetemperaturestaysmorethan5°F(3°C)awayfromthesetpoint,
theremaybeaproblemwiththechiller.Ifthisisthecase,refertotheTroubleshooting
ChartorcontacttheConairServiceDepartment.
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3. Checkthepumpdischargepressureonthegaugeonthe
backpanelofthechiller.
Investigatefurtherifthepressurestartstostrayawayfromthenormaloperatingpressure.
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4. Checkthecoolantlevelinthereservoir.Replenishifnecessarymakingsuretotakeproper
precautionstomaintaintheappropriateglycolconcentration.
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5. Checkcoolantcirculationpumpforleaksin
thesealarea.Replacepumpsealifnecessary.
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6. Checkrefrigerantsightglassforairbubblesormoistureindication.Ifthesightglass
indicatesthatthereisarefrigerationproblem,havetheunitservicedassoonaspossible.
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