GEA Bock HG12e CO2 - Manual (Page 11)

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Valve spindle seal
Release
Tighten
4| Compressor assembly
Fig. 13 Fig. 14
Pipe connection
Pipe connection
4.7 Operating mode of the lockable service connections
Fig. 15
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.
Fig. 16 Opening the service connection
Spindle: Turn ½ - 1 turn clockwise.
—> Service connection opened / shut-off valve opened.
Connection
blocked Spindle
Spindle
Connection
open
Compressor
Compressor
Service connection
closed
Service connection
opened
4.6 Operating the shut-off valves
Before opening or closing the shut-off valve, release the valve spindle seal by approx. ¼ of a turn
counter-clockwise.
After activating the shut-off valve, re-tighten the adjustable valve spindle seal clockwise.
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.