GEA HG44e/475-4 - Refrigerant Charge; Start-Up

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GB
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96416-03.2017-DGbFEIRu
6| 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.
6.5 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.
6.6 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!