4 | compressor assembly – GEA Bock HGX2 CO2 T User Manual
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4 | Compressor assembly
4.4 Flange shut-off valves (HP/LP)
ATTENTION! The compressor must be depressurised through connections A
and B before commencing any work and prior to connecting to the
refrigerant system
A
B
Fig. 11
Fig. 12
4.5 Operating mode of the lockable service connections
Pipe connection
Opening the shut-off valve:
Spindle: turn to the left (counter-clockwise) as far as it will go.
—> Shut-off valve completely opened / service connection closed.
The connection which cannot be shut off is intended for safety devices.
Opening the service connection
Spindle: Turn ½ - 1 turn to the right clockwise.
—> Service connection opened / shut-off valve opened.
The connection which cannot be shut off is intended for safety devices.
Spindle
Connection cannot
be shut off
Connection
blocked
Service connec-
tion closed
Pipe connection
Spindle
Connection cannot
be shut off
Connection
offen
Service connec-
tion opened
Fig. 13
Fig. 14
After activating the spindle, generally fit the spindle protection cap again and tighten with 14-16 Nm.
This serves as a second sealing feature during operation.