GEA Bock HG88e - Manual (Page 12)

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4| Compressor assembly
4.4 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.
Fig. 15: graduated
internal diameter
Pipe connections on the compressor are available for soldering or
welding (accessories). The discharge and suction line valves
have graduated inside diameters so that pipes with standart milli-
metre and inch dimensions can be used. The pipe will be immersed
more or less deeply according to dimension.
The connection diameters of the shut-off valves are rated for maxi-
mum compressor output. The actual required pipe cross section
must be matched to the output. The same applies for non-return
valves.
4.3 Pipe connections
ATTENTION Damage possible.
Superheating can damage the valve.
Remove the pipe supports from the valve for soldering.
Only solder using inert gas to inhibit oxidation products (scale).
The discharge gas connection can be moved upwards with an
adapter (accessory). This makes it easier to remove the
compressor from a refrigerating system.