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Fig. 6 Stepless regulation of FAD (standstill)
3
Inlet valve
4
Compressor block
5
Oil separator tank
23
Proportional controller (electric)
27
Venting valve
46
Nozzle
52
Control valve
63
Control valve (proportional valve)
4.5 Safety devices
4.5.1 Monitoring functions with shutdown
The SIGMA CONTROL MOBIL monitors the important machine parameters. The machine is auto‐
matically shut down if an alarm occurs.
The SIGMA CONTROL MOBIL saves the alarm message.
Further information Further information on alarm messages is to be found in chapter 9.2.1.
4.5.2 Further safety devices
The following safety devices are provided and may not be modified in any way.
■ Quick stop button
For immediate shutdown of the machine. The engine comes to a stop. The pressure system is
vented.
4
Design and Function
4.5
Safety devices
No.: 9_9425 01 E
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
31