Instruction book
2012 2039 28
120
8
Problem solving
Before carrying out any maintenance, repair work or adjustment, press the stop button,
wait until the compressor has stopped, press the emergency stop button and switch off
the voltage. Close the air outlet valve and lock it, if necessary.
Depressurise the compressor by opening the oil filler plug one turn.
Open and lock the isolating switch.
The operator must apply all relevant Safety precautions.
No.
Condition
Fault
Remedy
1
Compressor starts
running, but does not
load after a delay time
Solenoid valve out of order
Inlet valve stuck in closed
position
Replace valve
Have valve checked
Leak in control air flexible
Replace leaking flexible
Minimum pressure valve leaking
(when net is depressurized)
Have valve checked
2
Compressor does not
unload, safety valve
blows
Solenoid valve out of order
Replace valve
Inlet valve does not close
Have valve checked
3
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
Leak in control air flexible
Replace leaking flexible
Inlet valve does not fully open
Have valve checked
Oil separator clogged Air leakage
Have element replaced Have
leaks repaired
Safety valve leaking
Have valve replaced
Airend out of order
Consult your supplier
4
Excessive fluid
consumption; fluid carry-
over through discharge
line
Fluid level too high
Check for overfilling. Release
pressure and drain fluid to
correct level
Incorrect fluid causing foam
Change to correct oil
Oil separator defective
Have element checked. Replace
if necessary.
Scavenge line clogged
Check and remedy
5
Excessive fluid flow
through air inlet filter after
stopping compressor
Check valve leaking or fluid stop
valve jammed
Replace defective parts. Replace
air filter element
Summary of Contents for QGV 40
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Page 16: ...Instruction book 2012 2039 28 16 Main components Main components...
Page 128: ...Instruction book 2012 2039 28 128 Appendix 1 Product Analysis Report...
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