Pipe Connections; Pipes; Operating The Shut-Off Valves - BOCK FK30 Assembly Instructions Manual

4 | Compressor assembly

4.6 Pipe connections

Fig.9: Stepped
internal diameters
ATTENTION Overheating can damage the valve.

4.7 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.

4.8 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.
Valve spindle seal
Fig. 10
The discharge and suction line valves have stepped internal
diameters, enabling the use of pipes with standard millimetre and
inch dimensions. The depth of pipe insertion will depend on the
dimension.
The connection diameters of the shut-off valves are designed for
maximum compressor output. The required pipe cross-section
must be matched to the capacity. The same applies for
non-return valves.
Therefore, remove the pipe supports from the valve before
soldering.
Solder only using inert gas to inhibit oxidation products (scale).
Fig. 11
Release
Tighten
D
GB
F
I
Tr
Ru
11