14
5
Malfunctions and remedies compressor
Malfunction
Possible cause
Remedy
Oil pressure below 0.3 bar
at operating temperature
Drive speed to low
Check drive speed
Oil filter soiled
Clean oil strainer
Oil level to low
Top up oil
Oil pressure varies
Oil level to low
Top up oil
Oil intake pipe leaking
Check screw ed connection
Oil foams
Wrong oil grade
Top up w ith approved oil
grade
Water in the oil
Change oil
Oil level to high
Reduce oil
Oil leakages
Screw ed connection is
leaking
Check screw ed connection
Compressed air pressure to
high
Drive speed to high
Adjust drive speed
Defective non return valve
Replace non return valve
Safety valve does not blow
off
Check safety valve
Negative pressure gauge
reading 65 mbar
Suction filter clogged
Clean/replace filter
elements
Speed to high
Adjust drive speed
6
Malfunctions and remedies motor
Malfunction
Possible cause
Remedy
Motor does not start
No pow er supply
Check fuses, connections
and the pow er cable
Phase monitoring
Set main sw itch to position
“ 2”
Motor runs at half pow er
Phase missing
Check fuses
Motor does not sw itch to
phase 2
Start delta connection
defective
Have repair w ork
conducted by an expert
only
For immediate shut -
dow n in case of an emergency/a malfunction, press the “ emergency
off” button on the compressor unit.
