Pipes; Operating The Shut-Off Valves - BOCK HGX34e A Series Assembly Instructions Manual

4 | Compressor assembly

4.5 Pipes

Pipes and system components must be clean and dry inside and free of scale, swarf and layers of
rust and phosphate. Only use air-tight parts.
Lay pipes correctly. Suitable vibration compensators must be provided to prevent pipes being
cracked and broken by severe vibrations.
Ensure a proper oil return.
Keep pressure losses to an absolute minimum.
4.6 Laying suction and pressure lines
ATTENTION Improperly installed pipes can cause cracks and tears, the result
INFO
A rule of thumb: Always lay the first pipe section starting from the shut-off valve downwards and
parallel to the drive shaft.
D
GB
F
E
As short as
possible

4.7 Operating the shut-off valves

Before opening or closing the shut-off valve, release the adjustable 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.
Valve spindle seal
Fig. 13
12
being a loss of refrigerant.
Proper layout of the suction and discharge lines directly after
the compressor is integral to the system's smooth running and
vibration behaviour.
Rigid
fixed point
Fig. similar
Release
Fig. 14 Fig. similar
Fig. 12
Tighten