97
10. Troubleshooting
Problem
Oil in air line
Safety valve blows off
Oil comes out of the air filter of the
compressor after the screw compressor
has been shut down
Engine starts but switches off again
immediately, or the system switches off
while running
Possible cause(s)
Orifice in oil return line clogged
Oil fine separator defective
Too much oil in pressure tank
Controller set too high
Pressure control valve defective
Intake control valve, control cylinder,
engine, or connected control lines defective
Valve for intake control valve is missing /
is defective
Safety valve defective
Intake control valve defective
(backlash flap, O-ring, spring)
V-belt defective
Oil pressure switch/engine defective
Oil temperature switch defective
Engine temperature switch defective
Compressor defective
Cable defective or cable cover not plugged
onto sensor
Relay defective
Solenoid valve defective
Generator defective
Generator controller defective
Other engine problems
Correction
Repair / clean
Replace
Correct
Set
Replace or repair
Replace
Repair or replace
Replace
Check and repair
Replace
Replace
Replace
Replace
Check
Replace or plug onto sensor
Replace
Replace
Repair or replace
Repair or replace
See engine operating manual
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