Compressor With Coupling Housing; Oil Separator; Fig. 21 Gea Grasso M-Series, Arrangement Of The Coupling Housing; Fig. 22 Gea Grasso M-Series, Arrangement Of The Oil Separator - GEA Grasso M-Series Operating Manual

Description of Design and Function
7.7.3 Compressor with coupling hous-
ing
fig.21: GEA Grasso M-Series, arrangement of the coupling
housing
The coupling housing contains the coupling and is
used for the attachment of the compressor drive
motor. The elastic design of the coupling brings
about the neutralisation of otherwise disturbing influ-
ences such as axial or radial forces, vibrations or off-
set.
Speed fluctuations and speed shocks are damped
and cushioned, torsional vibrations are reduced.
Hint!
The documentation of the coupling is
a part of the product documentation.
40
7.7.4

Oil separator

fig.22: GEA Grasso M-Series, arrangement of the oil separator
The design of the oil separators is standardised and
features reduced oil carry-over and low oil consump-
tion.
The oil separator is installed horizontally.
Hint!
The documentation of the oil separator
(operating and maintenance instruc-
tion, acceptance certificate) is a inte-
gral part of the product documenta-
tion.
Oil heater
Electric oil heaters are built into the oil separator to
heat the oil refrigerant mixture in the oil separator
during the standstill of the screw compressor pack-
age. The oil heater prevents condensation of the
refrigerant into the oil and, thus, any foaming of the
oil during start-up.
Oil heaters are equipped with:
– Temperature controller for protection against
overheating
(Switching temperature 110°C)
– Temperature limiter in case of faults, e.g. pro-
tection against dry running
(permanently set to 150°C)
The oil heater is switched on when the screw com-
pressor package is stopped and is switched off auto-
matically on starting. A manual switch-off for long
standstill periods is recommended.
GEA Refrigeration Germany GmbH | P_261511_1 | Generated 01.04.2015
Operating Manual | GEA Grasso M-Series
Screw Compressor Packages