Atlas Copco GA90 User Manual

129
Instruction book
9096 3313 00
10 Problem solving
10.1 Problem solving
Warning
Faults and remedies
On compressors equipped with an Elektronikon® Graphic controller, if the alarm LED is lit or flashes, consult
sections
Event history menu or Service menu.
Before carrying out any maintenance, repair work or adjustment, press the stop
button, wait until the compressor has stopped (approx. 30 seconds) and close the air
outlet valve. Press the test button on top of the electronic water drain unit 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
• 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.
- 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
flexibles
Replace leaking flexible
Minimum pressure
valve leaking (when net
is depressurised)
Have valve checked
- Condition Fault Remedy
Compressor does not unload,
safety valve blows
Solenoid valve out of
order
Replace valve
Inlet valve does not
close
Have valve checked

Atlas Copco GA90 Specifications

General

Brand	Atlas Copco
Model	GA90
Category	Air Compressor
Language	English