SB-110-4
48
12
10
11
2
6
5
4
3
7
13
1
9
8
Fig. 12: External oil circuit diagram HS.95
1
Compressor
2
Oil separator
3
Oil heater
4
Oil thermostat
5
Oil level switch
6
Check valve
7
Oil cooler (if re-
quired)
8
Oil filter
9
Solenoid valve
10
Opto-electronic oil
level monitoring
(OLC-D1-S)
11
Oil pressure trans-
mitter
12
Compressor mod-
ule
13
Solenoid valve
(standstill bypass)
----
Wired to the com-
pressor module
5.5
Compressor module CM-SW-01
Standard for all HS.95 compressors
The compressor module integrates the entire electronic
periphery of the compressor: It allows the essential op-
erating parameters of the compressor to be monitored:
motor and discharge gas temperature, phase and rota-
tion direction monitoring, oil supply and application lim-
its and thus protects the compressor from operation un-
der critical conditions. For further information, see
Technical Information ST-150.
The following components are already fitted in the state
of delivery:
• Slider position indicator.
• Solenoid valves for capacity control and V
i
.
• Low pressure transmitter and high pressure transmit-
ter.
• Oil level monitoring (OLC-D1-S).
• Discharge gas temperature sensor.
• Oil pressure transmitter.
• Motor temperature monitoring.
• Phase monitoring.
• Rotation direction monitoring.
Modification to these components or their wiring is not
required and must not be done without consulting
BITZER.
The compressor module internally supplies voltage to
the peripheral devices (solenoid valves, oil monitoring
device and slider position indicator) and to the terminal
strips CN7 to CN12.
Please refer to the Technical Information ST-150 for in-
formation on all connections.
6
Commissioning
The compressor has been carefully dried, checked for
tightness and filled with a holding charge (N
2
) before
leaving the factory.
DANGER
Risk of explosion!
Never pressurize the compressor with oxygen
(O
2
) or other industrial gases!
WARNING
Risk of bursting!
A critical shift of the refrigerant ignition limit is
possible in case of excess pressure.
Do not add a refrigerant (e.g. as a leak indic-
ator) to the test gas (N
2
or air).
Environmental pollution in case of leakage and
when deflating!
