36
Problem Possible cause(s) Correction
Insufficient or no air supply Clogged air filter Clean air filter
Screw compressor engine speed
misadjusted
Set speed
Clogged oil fine separator filter cartridge Replace compressor oil, oil filter and oil
fine separator filter cartridge
Wrong setting at controller Adjust
Spring and plunger inside the intake
control valve are not fully opened
Clean, replace parts if necessary, readjust
Insufficient pressure Pressure control valve defective Repair or replace
Outflow valve dirty Clean
Control line defective Repair or replace
Intake control valve defective Repair or replace
Compressor becomes excessively hot
(automatic shutdown)
Screw compressor will not start
(starter motor not turning)
Wrong oil Replace
Compressor oil level too low Fill up with oil
Fan broken Replace
Oil cooler dirty (outside) Clean
Oil filter clogged Replace
Leak in oil line Repair or replace
Air short circuit Repair
No power on instrument panel Switch on fuse F1
Operating voltage low Charge battery or replace
Electrical connection loose, corroded,
or broken
Replace
Starter defective Replace
Switch defective Replace
No control system test (LEDs flashing)
after activation of S1
Check and switch on main fuse F1
Screw compressor will not start
(starter motor turning)
Compressor shuts down.
Engine oil pressure LED flashes
No fuel Fill up with fuel
Fuel pump not delivering Replace fuse F2
Fuel filter clogged Replace fuel filter cartridge and vent fuel
system (see engine operating manual)
Fuel line loose, broken, or jammed Repair line
Air in system Vent fuel system (see engine operating
manual)
Lifter magnet not working Replace
Other engine problems See engine operating manual
Fuel level too low Refuel
Engine starts, but runs at reduced speed
and very high engine vibrations which
lead to the destruction of the coupling.
Fuel system blocked
Fuel pre-pressure too low
Check function of fuel system
=> el. backing pump,
=> filter with water separator,
=> line filter
10. Troubleshooting
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