Commissioning; Preparations For Start-Up; Pressure Strength Test; Leak Test Tr - Danfoss BOCK FK20 Operating Manual

5| Commissioning

5.1 Preparations for start-up

INFO!
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 tested in the factory for pressure integrity. If however the entire system is
to be subjected to a pressure integrity test, this should be carried out in accordance with EN 378-2
or a corresponding safety standard without the inclusion of the compressor.
5.3 Leak test
DANGER!
Carry out the leak test on the refrigerating plant in accordance with EN 378-2 or a corresponding
safety standard, while always observing the maximum permissible overpressure for the compressor.

5.4 Evacuation

First evacuate the system and then includethe 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.
© Danfoss | Climate Solutions | 2023.07
To protect the compressor against inadmissible operating conditions,
high-pressure and low-pressure pressostats are mandatory on the
installation side.
Risk of bursting!
The compressor must only be pressurised using dried nitrogen (N
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.
AQ451838788471en-000201 | 13
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