Atlas Copco GA 15 Instruction Book page 94

Condition
Excessive oil consumption; oil
carry-over through discharge line
Safety valve blows after loading
Compressor element outlet
temperature or delivery air
temperature above normal
Faults and remedies, dryer
For all references hereafter, consult section
Condition
Pressure dew point too high
92
Fault
Oil separator clogged
Air leakage
Safety valve leaking
Compressor element out of order
Incorrect oil causing foam
Oil level too high
Oil separator defective
Malfunctioning of the scavenge line
Inlet valve malfunctioning
Minimum pressure valve
malfunctioning
Safety valve out of order
Compressor element out of order
Oil separator element clogged
Oil level too low
On air-cooled compressors,
insufficient cooling air or cooling air
temperature too high
Oil cooler clogged
Bypass valve malfunctioning
Air cooler clogged
Compressor element out of order
Air dryer.
Fault
Air inlet temperature too high
Ambient temperature too high Check and correct; if necessary, draw
Shortage of refrigerant
Refrigerant compressor does
not run
Remedy
Replace oil separator element
Have leaks repaired
Have valve replaced
Consult Atlas Copco
Change to correct oil
Check for overfilling. Release
pressure and drain oil to correct
level.
Replace oil separator element
Replace non-return valve in the
scavenge line
Have valve checked
Have valve checked
Have valve replaced
Consult Atlas Copco
Replace oil separator element
Check and correct
Check for cooling air restriction or
improve ventilation of the
compressor room. Avoid
recirculation of cooling air. If
installed, check capacity of
compressor room fan
Clean cooler
Have valve tested
Clean cooler
Consult Atlas Copco Customer
Centre
Remedy
Check and correct; if necessary, clean the
aftercooler of the compressor
cooling air via a duct from a cooler place or
relocate the compressor
Have circuit checked for leaks and
recharged
See below
Instruction book
API459842