9 Problem solving
Warning
Before carrying out any maintenance, repair work or adjustment, press the stop button,
wait until the compressor has stopped (approx. 30 seconds), press the emergency stop
button and switch off the voltage. Close the air outlet valve, open manual drain (Dm) on
Pack units and also open the manual condensate drain (Dm1) on Tank-mounted units.
Depressurise the compressor by opening the oil filler plug (FC) one turn.
For location of components, see sections:
•
Introduction
•
Condensate system
•
Initial start-up
Open and lock the isolating switch.
The air outlet valve can be locked 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.
Faults and remedies, compressor
On compressors equipped with an Elektronikon® controller, if the alarm LED is lit or flashes, consult sections
Shutdown warning , Shutdown and Service warning.
On compressors equipped with an Elektronikon® Graphic controller, if the alarm LED is lit or flashes, consult
sections Event history menu or Service menu.
Condition Fault Remedy
Compressor starts running, but
does not load after a delay time
Solenoid valve out of order Replace valve
Inlet valve stuck in closed position Have valve checked
Leak in control air tubes Replace leaking tubes
Minimum pressure valve leaking
(when net is depressurised)
Have valve checked
Compressor does not unload,
safety valve blows
Solenoid valve out of order Replace valve
Inlet valve does not close Have valve checked
Condensate is not discharged from
condensate separator during
loading
Discharge tube clogged Check and correct as necessary
On Pack units: float valve
malfunctioning
Remove float valve assembly,
clean and check
On Full-Feature units: electronic
drain malfunctioning
Press test button, replace if
necessary
Compressor air output or pressure
below normal
Air consumption exceeds air delivery
of compressor
Check equipment connected
Choked air filter element Replace filter element
Instruction book
142 2920 7083 31
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