Faults 5.2 Faults – Compressor
Page 42 BOGE Operating instructions for C 15 series screw compressors
Compressor system
does not start up
No electric power to compressor Check electrical connection
Fuses are defective Check the mains and control fuses, replace if necessary
Machine has not vented perfectly Check venting valve and replace, if necessary
Voltage fluctuations in the electri-
cal mains power
Ensure constant voltage
Compressor oil is very viscous due
to low ambient temperature
Heat compressor room
Oil in suction filter Minimum pressure non-return
valve is leaking
Check the minimum pressure check valve and replace, if necessary
Suction controller is leaking Check the suction controller and replace, if necessary
Switch-off performed by emer-
gency-off switch/button
Cut-out normally via O-key
Excessive oil
consumption
Drain line is blocked Dismantle and clean drain line
Defective oil separator element Check oil separator and replace, if necessary
Excessive oil filling Drain off oil
Safety valve blows Operating pressure target value
maladjusted
Set operating pressure to maximum permissible pressure of the
screw compressor
Defective safety valve Replace safety valve
System pressure does
not decrease when
switching off
Venting valve does not open Check the venting valve and replace, if necessary
Check valve is leaking Examine check valve and replace, if necessary
Fault Possible cause Rectification
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