14
GB
GB
F
E
96438-02.2020-DGbRu
4.8 Operating the shut-off valves
Before opening or closing the shut-off valve, release the valve spindle seal by approx. 1/4 of a
turn counter-clockwise.
After activating the shut-off valve, re-tighten the adjustable valve spindle seal clockwise.
Fig. 20
Fig. 21
4.9
Operating mode of the lockable service connections
Fig. 22
Opening the shut-off valve:
Spindle: turn to the left (counter-clockwise) as far as it will go.
—> The shut-off valve is then fully open and the service connection is closed.
Fig. 23
Opening the service connection
Spindle: 1/2 - 1 rotation to the right (clockwise).
—> The service connection is then open and the shut-off valve is also open.
Spindle
Spindle
Valve spindle seal
loosen
tighten
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.
Pipe connection
Pipe connection
Compressor
Compressor
Connection
blocked
Connection
open
Service connection
closed
Service connection
opened
4
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Compressor assembly