Friedrich Kuhl+ KEQ08A11A User Manual

51 PB
COMPONENT TESTING
Compressor Replacement -Special Procedure in Case of Compressor Burnout
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
result in serious injury or death.
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment with
power applied.
Failure to do so could result in serious injury or
death.
WARNING
EXPLOSION HAZARD
The use of nitrogen requires a pressure
regulator. Follow all safety procedures and
wear protective safety clothing etc.
Failure to follow proper safety procedures
could result in serious injury or death.
1.Recoverallrefrigerantandoilfromthesystem.
2.Removecompressor,capillarytubeandlterdrierfromthe
system.
3.Flushevaporatorcondenserandallconnectingtubingwithdry
nitrogenorequivalent.Useapprovedushingagenttoremoveall
contaminationfromsystem.Inspectsuctionanddischargelinefor
carbondeposits.Removeandcleanifnecessary.Ensureallacidis
neutralized.
4.Reassemblethesystem,includingnewdrierstrainerandcapillary
tube.
5.PressurizewithacombinationofR-410Aandnitrogenandleaktest
allconnectionswithanelectronicorHalideleakdetector.Recover
refrigerantandrepairanyleaksfound.
5a.Ifleakdetectorisunavailableremoveallrefrigerantfromsystem
andpressurizewithnitrogento350psi.Checkthatsystemholds
pressure.
RepeatStep5toinsurenomoreleaksarepresent
6.Evacuatethesystemwithagoodvacuumpumpcapableofanal
vacuumof200micronsorless.Thesystemshouldbeevacuated
throughbothliquidlineandsuctionlinegaugeports.Whiletheunit
isbeingevacuated,sealallopeningsonthedefectivecompressor.
Compressormanufacturerswillvoidwarrantiesonunitsreceivednot
properlysealed.Donotdistortthemanufacturerstubeconnections.
7.Rechargethesystemwiththecorrectamountofrefrigerant.The
properrefrigerantchargewillbefoundontheunitratingplate.The
useofanaccuratemeasuringdevice,suchasachargingcylinder,
electronicscalesorsimilardeviceisnecessary.
ROTARYANDSCROLLCOMPRESSORSPECIALTROUBLESHOOTING
AND SERVICE
Troubleshootingandservicingrotarycompres-sorsisbasically
thesameasonthereciprocatingcompressorwithonlyonemain
exception:
NEVER,underanycircumstances,liquidchargearotary-compressor
through the LOWside.Doingsowouldcausepermanentdamageto
thenewcompressor.Useachargingadapter.

Friedrich Kuhl+ KEQ08A11A Specifications

General

Brand	Friedrich
Model	Kuhl+ KEQ08A11A
Category	Air Conditioner
Language	English