Owner's manual

- 10-
 MaintenanceBy‐pass:
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□CloseMoldcastcircuitbreaker“O ff”ofeveryload.
□Pushingthegreenbutton“Off”onfrontpanel,althoughthereisnooutputvoltage,theAVRis
stillinaction.
□SwitchMCCB(1)Moldcastcircuitbreakerto“Off”position.
□SwitchMCCB(2)Moldcastcircuitbreakerupto“On”position.
□UsingTureRMSvoltagemetertomeasuretheO/PN,UVWontheterminalboard,iftheoutput
voltageiscorrect,AVRisby‐passsuccessfully.
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9‐Maintenance&Cleaning
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DothecleaningduringtheinputMoldcastcircuitbreakerMCCB(1)andmaintenance
by‐passMCCB(2)switchisin“Off”positionforhumanhealth.
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Donotusedetergentsoranycleaningmaterialthatmaydamagethecabinetsurfaces.
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DonotletanyliquidgetintotheAVR.
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Ensurethattheairholesareopen.
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TheAVRbodycanbewipedwithacleananddrycloth.
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ChecktheareasurroundingtheAVR.Ensuretheareaisnotcluttered,allowingfree
accesstotheunit.
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Ensuretheairintakes(ventsonthefrontdoors)andexhaustopening(onrearoftheAVR
cabinetsections)arenotblocked.
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Toensuremaximumlifeoftheequipment,thefollowingshouldbepartofanannualmaintenance
program.WarningDe‐energizeunitbef or eperformingmaintenance.Voltagesarepresentinsidethisunit
whichcancauseinjury.Therefore,onlypersonnelqualifiedtoserviceelectricalequipmentshould
performmaintenanceonthisunit.
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‐Vacuum the voltageregulatorinsideandouttoremoveaccumulateddirt,whichcouldleadto
overheatingorinsulationfailure.
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‐Tightenallelectricalconnections,particularlyallpowerwiringto ,andin,theunit.
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‐Inspectallvariabletransformerbrushesandcommutatorsforsignsofwearorpitting.Replaceas
required.Donotat tempttocleanacommutatorwithanabrasivesuchassandpaperorafile.Thiswill
ruinthesoftpreciousmetalplatingonthecommutatorandwillshortenthelifeoftheunit.Itis
normalforcommutatorstobecomeblackduetocarbonbrushtracking.Ifacommutatoristobe
cleaned,usedenaturedalcoholandasoftcloth.