Atlas Copco GA 160 VSD Instruction Book page 104

Unit is shut down
The alarm LED will flash indicating either that the outlet temperature is too high or that the motor overload
relay has tripped. Remedy the problem.
On compressors equipped with the MkIV regulator, it may be necessary to reset the display after
remedying the fault: press the "Reset" key (2); the message "All protection functions are OK" will appear, after
which the compressor can be restarted.
Excessive oil consumption
Have the compressor inspected by the Atlas Copco Customer Centre.
Condition
Condensate is not discharged from
condensate traps during loading.
Condition
Compressor air delivery or pressure
below normal.
Condition
Compressor element outlet
temperature or delivery air
temperature above normal.
102
Fault
Discharge pipe of condensate trap
clogged.
Float valve of condensate traps
malfunctioning.
EWD (electronic water drain)
malfunctioning.
Fault
Air consumption exceeds air
delivery of compressor.
Choked air filters.
Air leakage.
Fault
Oil level too low.
Oil coolers clogged.
Air cooler clogged.
On air-cooled compressors,
insufficient cooling air or cooling
air temperature too high.
On water-cooled compressors,
cooling water flow too low.
On water-cooled compressors,
restriction in cooling water system.
Instruction book
Remedy
Check and correct as necessary.
Remove float valve assembly,
clean and check.
Consult Atlas Copco.
Remedy
Check equipment connected.
Replace filters.
Check and correct.
Remedy
Check and correct.
Consult the section Coolers.
Consult the section Coolers.
Check and correct as necessary.
Increase flow.
Consult Atlas Copco Customer
Centre.
APF192090