Stoerung.pm6.5 - USA
Page 4.2 BOGE Operating instructions for S 40-2...S 341 / SF 40-2...SF 220 series screw compressors
Excessive oil
consumption
Dismantle and clean drain line
Check oil separator and replace, if necessary
Drain off oil
Drain line is blocked
Defective oil separator
element
Excessive oil filling
Safety valve blows Set operating pressure to the maximum
permissible pressure of the screw compressor
Replace safety valve
Operating pressure switch
has been misadjusted
Defective safety valve
4.2 General faultsFaults
Fault RectificationPossible cause
Compressor
does not start up
Check electrical connection
Check the mains and control fuses, replace if
necessary
Check venting valve and replace, if necessary
Ensure constant voltage in accordance with IEC 38
Heat up the compressor
(additional heater available as as option)
No electric power to com-
pressor
Fuses are defective
Machine has not vented
perfectly
Voltage fluctuations in the
electrical mains power
Compressor oil is very
viscous due to low ambient
temperature
Oil in suction filter
Check the minimum pressure check valve and
replace, if necessary
Check the suction controller and replace,
if necessary
Cut-out normally via O key
Minimum pressure non-
return valve is leaking
Suction controller is leaking
Cut-out performed by
emergency-off switch
No quantity delivered,
no pressure build-up,
max. pressure 0.5 bar
System components in the
compressor are leaking
Minimum pressure valve is
defective
Electromagnetic venting
valve does not close
Suction controller does not
open
V-belts are torn
Check oil and compressed air lines inside the com-
pressor; tighten and/or reseal screw connections,
if necessary
Close ball valve and check whether pressure builds
up; if so, open ball valve again immediately; replace
minimum pressure valve
Check solenoid valve and replace, if necessary
Suction controller or solenoid valve is defective;
check and replace, if necessary
Fit new V-belts
System pressure
does not decrease
when switch-
ing off
Check venting valve and replace, if necessary
Check the check valve and replace, if necessary
Venting valve does not open
Check valve is leaking