GEA pluscom Bock EX-HG12P, Assembly Instructions Manual, Page: 17 / 44

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Fig. 13
4.6 Laying suction and pressure lines
4 | Compressor assembly
4.5 Pipes
The
pressure and suction shut-off valves
have graduated inside
diameters so that pipes in the common millimeter and inch dimensions
can be used. The pipe will be inserted more or less deep, depending on
the dimension.
The connection diameters of the shut-off valves are designed for
maximum compressor performance.
The actual required pipe cross
section must be matched to the output. The same applies for
non-return valves.
Fig.12: graduated
internal diameter
4.4 Pipe connections
ATTENTION An explosive atmosphere must not be present!
Do not solder as long as the compressor is under pressure.
Superheating can damage the valve. Remove the pipe supports
therefore from the valve for soldering and accordingly cool the
valve body during and after soldering.
Only solder using inert gas to inhibit oxidation products (scale).
A rule of thumb: Always lay the first pipe section starting from the shut-off valve downwards and
parallel to the drive shaft.
ATTENTION Improperly installed pipes can cause cracks and tears which can
result in a loss of refrigerant
INFO Proper layout of the suction and pressure lines directly after the com-
pressor is integral to the smooth running and vibration behaviour of
the system.
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.
As short
as possible
Rigid fixed point