GEA Bock FK40 - Manual (Page 15)

15 09716-10.2013-DGbFEIT
rCn
D
GB
F
E
I
TR
CN
5| Commissioning
5.1 Preparations for start-up
5.4 Evacuation
First evacuate the system and then include the compressor in the evacuation process.
Relieve the compressor pressure.
Open the suction and discharge line valves.
Evacuate the suction and discharge pressure sides using the vacuum pump.
At the end of the evacuation process, the vacuum should be < 1.5 mbar when the pump is switched off.
Repeat the process as often as is required.
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!
5.2 Pressure strength test
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.
5.3 Leak test
Carry out the leak test of the refrigerating system in accordance with EN 378-2 or a corresponding
safety standard without including the compressor.
INFO To protect the compressor against inadmissible operating condi-
tions, high-pressure and low-pressure pressostats are mandatory
on the installation side.
DANGER Bursting!
The compressor must only be pressurised using nitrogen (N
2
). Ne-
ver 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.
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.