GEA HGX4 CO2 Series - 6 Commissioning; Preparations for Start-Up; Pressure Strength Test; Leak Test

18
D
GB
F
E
96020-09.2013-DGbFEI
6| Commissioning
WARNING! Whenthecompressorisnotrunning,dependingonambient
 temperatureandamountofrefrigerantcharge,itispossiblethat 
the pressure may rise and exceed permitted levels for the
 compressor.Adequateprecautionsmustbetakentoprevent
 thishappening(e.g.usingacoldstoragemedium,areceivertank,
asecondaryrefrigerantsystem,orpressurereliefdevices).
6.1 Preparations for start-up
INFO! In order to protect the compressor against inadmissible operating
conditions,high-pressureandlow-pressurepressostats controls are
mandatory on the installation side.
The compressor has undergone trials in the factory and all functions have been tested. There are
therefore no special running-in instructions.
Checkthecompressorfortransportdamage!
6.2 Pressure strength test
DANGER! Bursting! The compressor must only be pressurised using nitrogen
(N
2
). Never pressurise with oxygen or other gases!
The maximum permissible overpressure of the compressor must not
be exceeded at any time during the testing process (see name plate
data)! Do not mix any refrigerant with the nitrogen as this could
cause the ignition limit to shift into the critical range.
The compressor has been factory-tested for pressure resistance. The following must be observed if
the entire plant is subjected to an additional pressure strength test:
Test the refrigeration circuit according to EN 378-2 or a corresponding safety standard.
6.3 Leaktest
DANGER! Bursting!
Do not mix any refrigerant with the nitrogen (N
2
) as this could cause
the ignition limit to shift into the critical range.
Carry out the leak test of the refrigerating system in accordance with EN 378-2 or a corresponding
safety standard without including the compressor.