5 | compressor assembly – GEA Bock HGZ7 User Manual

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5| Compressor assembly

5.9 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.

Fig. 25

Fig. 26

Valve spindle seal

release

tighten

Pipe connection

Pipe connection

5.10 Operating mode of the lockable service connections

Fig. 27

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.

Fig. 28

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.

Service connection
closed

Connection
blocked

Spindle

Connection cannot
be shut off

Connection cannot
be shut off

Service connection
opened

Spindle

Connection
open

Compressor

Compressor

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