GEA Bock HAX2 CO2 T - Manual (Page 18)

18
D
GB
F
E
96031-02.2015-DGbF
6| Commissioning
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!
6.4 Evacuation
ATTENTION! Do not start the compressor if it is under vacuum. Do not apply
any voltage - even for test purposes (must only be operated with
refrigerant).
Under vacuum, the spark-over and creepage current distances of the
terminal board connection bolts shorten; this can result in winding and
terminal board damage.
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).
6.2 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.