Condition Fault Remedy
Oil separator clogged Replace oil separator element
Air leakage Have leaks repaired
Safety valve leaking Have valve replaced
Compressor element out of order Consult Atlas Copco
Excessive oil consumption; oil
carry-over through discharge line
Incorrect oil causing foam Change to correct oil
Oil level too high Check for overfilling. Release
pressure and drain oil to correct
level.
Oil separator defective Replace oil separator element
Malfunctioning of the scavenge line Replace non-return valve in the
scavenge line
Safety valve blows after loading Inlet valve malfunctioning Have valve checked
Minimum pressure valve
malfunctioning
Have valve checked
Safety valve out of order Have valve replaced
Compressor element out of order Consult Atlas Copco
Oil separator element clogged Replace oil separator element
Compressor element outlet
temperature or delivery air
temperature above normal
Oil level too low Check and correct
On air-cooled compressors,
insufficient cooling air or cooling air
temperature too high
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
Oil cooler clogged Clean cooler
Bypass valve malfunctioning Have valve tested
Air cooler clogged Clean cooler
Compressor element out of order Consult Atlas Copco Customer
Centre
Instruction book
86 2920 7104 10
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