4 | compressor assembly – GEA Bock HG6 User Manual
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4.5 Laying suction and pressure lines
INFO!
 Proper layout of the suction and pressure lines directly after the 
 compressor is integral to the smooth running and vibration behaviour 
of the system. 
ATTENTION! Improperly installed pipes can cause cracks and tears which can
result in a loss of refrigerant,
A rule of thumb:
Always	lay	the	first	pipe	section	starting	from	the	shut-off	valve	
downwards and
parallel to the drive shaft.
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.
The
pipe connections have graduated inside diameters so that pipes with
standart millimetre and inch dimensions can be used.
The connection diameters of the shut-off valves are rated for maximum
compressor output.
The actual required pipe cross section must be
matched to the output. The same applies for non-return valves.
Fig. 13: graduated 
internal diameter
Fig. 14
As short as 
possible
Rigid 
fixed point
