Problem Solving - Atlas Copco GA 15 Instruction Book

Instruction book
8

Problem solving

Warning
Faults and remedies, compressor
On compressors equipped with an Elektronikon® controller, if the alarm LED is lit or flashes, consult
sections Shutdown warning
Condition
Compressor starts running, but
does not load after a delay time
Compressor does not unload,
safety valve blows
Condensate is not discharged
from condensate separator during
loading
Compressor air output or pressure
below normal
API459842
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, open the manual drain valve. Depressurise the
compressor by opening the oil filler plug (FC) one turn.
For location of components, see sections Introduction,
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.
Always apply all relevant
, Shutdown and
Fault
Solenoid valve out of order
Inlet valve stuck in closed position
Leak in control air tubes
Minimum pressure valve leaking
(when net is depressurized)
Solenoid valve out of order
Inlet valve does not close
Discharge tube clogged
Float valve malfunctioning
(condensate drain, units without
dryer)
On Full-Feature units: electronic
drain malfunctioning
Air consumption exceeds air
delivery of compressor
Choked air filter element
Solenoid valve malfunctioning
Leak in control air tubes
Inlet valve does not fully open
Safety precautions.
Service warning.
Condensate system and
Remedy
Replace valve
Have valve checked
Replace leaking tubes
Have valve checked
Replace valve
Have valve checked
Check and correct as necessary
Remove float valve assembly,
clean and check
Press test button, replace if
necessary
Check equipment connected
Replace filter element
Replace valve
Replace leaking tubes
Have valve checked
Initial
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