8 Problem solving
Warning
Before carrying out any maintenance, repair work or adjustment, stop compressor, wait
3 minutes and close the air outlet valve.
Press the test button on top of the electronic water drain until the air system between
the air receiver and outlet valve is fully depressurized.
Press the emergency stop button and switch off the voltage.
Depressurise the compressor by opening the oil filler plug one turn.
For location of components, see sections:
• Introduction.
• Condensate system.
• Operation instructions
• Maintenance.
Open and lock the isolating switch.
Lock the air outlet valve during maintenance or repair as follows:
• Close the valve.
• Remove the screw fixing the handle with the wrench delivered with the
compressor.
• Lift the handle and turn it until the slot of the handle fits over the blocking edge on
the valve body.
• Fit the screw.
The operator must apply all relevant Safety precautions.
Before electrical maintenance
Wait for at least 10 minutes before starting any electrical repairs as dangerous high
voltage remains on the capacitors of the start and speed regulation unit during some
minutes after switching off the voltage.
Faults and remedies, compressor
If the alarm LED is lit or flashes, consult sections Event history menu or Service menu.
Condition Fault Remedy
Condensate is not discharged from
condensate separator during
loading
Discharge flexible clogged Check and correct as necessary
Condition Fault Remedy
Compressor air output or pressure
below normal
Air consumption exceeds air
delivery of compressor
Check equipment connected
Choked air filter element Replace filter element
Solenoid valve malfunctioning Replace valve
Oil separator clogged Have element replaced
Air leakage Have leaks repaired
Safety valve leaking Have valve replaced
Instruction book
2920 7109 23 113
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