GEA Bock HG44e Series - Refrigerant charge; Start-up

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8 | Commissioning
Makesurethatthesuctionandpressurelineshut-offvalvesareopen.
 Withthecompressorswitchedoff,addtheliquidrefrigerantdirectlytothecondenserorreceiver,
breakingthevacuum.
 Iftherefrigerantneedstoppingupafterstartingthecompressor,itcanbetoppedupinvapour
formonthesuctionside,or,takingsuitableprecautions,alsoinliquidformattheinlettothe
evaporator.
8.5 Refrigerantcharge
CAUTION Wearpersonalprotectiveclothingsuchasgogglesandprotective
gloves!
ATTENTION Avoidoverllingthesystemwithrefrigerant!
Toavoidshiftsinconcentration,zeotropicrefrigerant blendsmust
alwaysonlybelledinto therefrigeratingplantinliquidform.
Donotpourliquidcoolantthroughthesuctionlinevalveon
thecompressor.
Itisnotpermissibletomixadditiveswiththeoiland
 refrigerant.
8.6 Start-up
 Checkthatthesafetyandprotectiondevices(pressureswitch,motorprotection,electrical
contactprotectionmeasures,etc.)areallfunctioningproperly.
 Switchonthecompressorandallowtorunforaminimumof10min.
Checktheoillevel by:Theoilmustbevisibleinthesightglass.
WARNING Ensurethatbothshut-offvalvesareopenbeforestartingthe
compressor!
ATTENTION Iflargerquantitiesofoilhavetobetoppedup,thereisariskof
oilhammereffects.
Ifthisisthecasechecktheoilreturn!