Electrolux E23CS75DSS0 - Section E - Refrigeration System; Safety Warnings; Compressor Testing; Charging Sealed Systems

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Section E - Refrigeration System
NOTICE
Instructionsgivenherearefurnishedasaguide.
Personsattemptingtousetheseinstructionsto
makerepairstothesealedrefrigerationsystem
shouldhaveaworkingknowledgeofrefrigeration
andprevioustrainingonsealedsystemrepair,
andanEPAcerticationforservicingrefrigeration
systems.
IMPORTANT NOTICE
EffectiveJuly1,1992,theUnitedStatesclean
airactgovernsthedisposalofrefrigerantssuch
asR-134a.Therefore,whendischargingor
purgingthesealedsystemuseanepaapproved
refrigerantrecoverysystemasoutlinedinthenal
ruleontheprotectionofstratosphericozoneand
refrigerantrecycling,whichwaspublishedinthe
FederalRegisterMay14,1993.
NOTE
Frigidairedoesnotpermittheuseofrecovered
refrigerantintheservicingofourproductsfor
in-warrantyandout-of-warrantyrepairsorfor
productscoveredbyservicecontracts.Therefore,
onlynewrefrigerantorrefrigerantthathas
beenreclaimedbacktonewspecicationsbya
refrigerantmanufactureristobeused.
Definitions
Recovery:
To remove refrigerant in any condition from a
system and store it in an external container
without necessarily testing or processing it in
any way.
Recycling:
To clean refrigerant for reuse by oil separation
and single or multiple passes through devices,
such as replaceable core lter-driers, which
reduce moisture, acidity and particulate matter.
This term usually applies to procedures
implemented at the eld job site or at a local
service shop.
Reclaim:
Toreprocessrefrigeranttonewproduct
specicationsbymeanswhichmayinclude
distillation.Willrequirechemicalanalysisofthe
refrigeranttodeterminethatappropriateproduct
specicationsaremet.Thistermusuallyimpliesthe
useofprocessesorproceduresavailableonlyata
reprocessingormanufacturingfacility.
Safety Warnings
Compressor Testing
Whenevertestingacompressor,extremecaution
shouldbeusedtopreventdamagingtheterminals.
Acompressorwithadamagedterminalora
groundedwindingcanexpelaterminalfrom
itsinsulatedhousingwhenthecompressoris
energized.Ifthishappens,amixtureofrefrigerant
andoilwillbereleasedthatcouldbeignitedby
anexternalheatsource(opename,heater,
etc.).Also,ifthereisairinthesystemwhenthis
happens,asparkatthecompressorshellcould
ignitetherefrigerantandoilmixture.
Charging Sealed Systems
Overchargingarefrigerationsystemwithrefrigerant
canbedangerous.Iftheoverchargeissufcient
toimmersethemajorpartsofthemotorand
compressorinliquidrefrigerant,asituationhas
beencreatedwhich,whenfollowedbyasequence
ofcircumstancescanleadtothecompressorshell
seamseparating.
Ahydraulicblockoccurs,preventingthe
compressorfromstarting.Thisconditionisknown
aslockedrotor.Electriccurrentcontinuestoow
throughthecompressormotorwindingswhich
become,ineffect,electricresistanceheaters.
Theheatproducedbeginstovaporizetheexcess
refrigerantliquidcausingarapidincreasein
systempressure.Ifthecompressorprotective
devicesfail,thepressurewithinthesystemmay
risetoextremesfarinexcessofthedesignlimits.
Undertheseconditions,theweldseamaround
thecompressorshellcanseparatewithexplosive
force,spewingoilandrefrigerantvaporwhichcould
ignite.
Toeliminatethisexceedinglyrarebutpotential
hazard,neveraddrefrigeranttoasealedsystem.If
refrigerantisrequired,evacuatetheexistingcharge
andrechargewiththecorrectmeasuredamountof
therefrigerantspeciedforthesystem.