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P5417025-rev.1

SAFETY SUMMARY

WARNING

● Donotuseanysprayssuchasinsecticide,lacquer,hairsprayorotherammablegaseswithin

approximately1.3m(4ft)fromthesystem.

● Ifthecircuitbreakerorfuseisoftenactivated,stopthesystemandcontactyourservicecontractor.

● Checkthatthegroundwiringissecurelyconnected.Iftheunitisnotcorrectlygrounded,itmaycause

electricshock.Donotconnectthegroundwiringtogaspiping,condensatepiping,lightingconductoror

groundwiringfortelephones.

● Beforeperforminganybrazingwork,checktoensurethatthereisnoammablematerialaround.

Whenusingrefrigerant,besuretowearleatherglovestopreventinjuryfromcold.

● Insulateelectricalwiring,condensatepiping,andelectricalcomponentsfromthreatsposedbyburrowing

animalsandtemperatureextremes.Failuretodosocan,overtime,deterioratesystemperformance.

● Securethecables.Externalforcesontheterminalscouldleadtoare.

● Tightenthearenutwithatorquewrenchinthespeciedmanner.Donotapplyexcessiveforcetothe

arenutwhentightening.Ifyoudo,thearenutcancrackandrefrigerantleakagemayoccur.

● Whenmaintaining,relocatingordisposingoftheunit,dismantletherefrigerantpipingafterthecompressor

stops.

● Highlydangerouselectricalvoltagesareusedinthissystem.Carefullyrefertothewiringdiagramand

theseinstructionswhenwiring.Improperconnectionsandinadequategroundingcancauseseriousinjury

ordeath.

● Performallelectricalworkinstrictaccordancewiththisinstallationandmaintenancemanualandall

relevantregulatorystandards.

● Usespeciedcablesbetweenunits.

● Besuretoinstallcircuitbreakers(groundfaultinterrupter,isolatingswitch,moldedcasecircuitbreaker

andsoon),withthespeciedcapacity.Ensurethatthewiringterminalsaretightenedsecurelyto

recommendedtorquespecications.Ifacircuitbreakerorfuseisfrequentlyactivated,shutdownthe

systemandcontactyourservicecontractor.

● Clampelectricalwiressecurelywithacableclampafterallwiringisconnectedtotheterminalblock.

Inaddition,runwiressecurelythroughthewiringaccesschannel.

● Wheninstallingthepowerlines,donotapplytensiontothecables.Securethesuspendedcablesat

regularintervals,butnottootightly.

● Afterstoppingoperation,besuretowaitatleastveminutesbeforeturningoffthemainpowerswitch.

Otherwise,waterleakageorelectricalbreakdownmayresult.Disconnectthepowersupplycompletely

beforeattemptinganymaintenanceforelectricalparts.Checktoensurethatnoresidualvoltageispresent

afterdisconnectingthepowersupply.

● Insulatetherefrigerantpipeconnectiontopreventcondensation.

● Besuretoattachthecoversothatittssecurelyontheelectricalboxwithoutanygaps.Securethecover

withscrews.

Hitachi CH-Box User Manual

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