Atlas Copco GA 7 VSD+ Instruction Book page 116

Condition
Condition
Safety valve blows
Condition
Compressor element outlet
temperature or delivery air
temperature above normal
Condition
Low Load Alarm triggered:
Compressor running with too low oil
temperature over a longer period of
time
Converter fault codes
If a problem is detected by the converter, a specific code (Main motor converter alarm) will appear on the
Elektronikon display, together with a fault code. Below table lists the most important error codes. If
another code appears, please contact Atlas Copco.
114
Fault
Compressor element out of order
Fault
Minimum pressure valve
malfunctioning
Oil separator clogged
Safety valve out of order
On Full-Feature compressors, dryer
piping clogged due to formation of
ice
Fault
Oil level too low
On air-cooled compressors,
insufficient cooling air or cooling air
temperature or relative humidity is
too high
Oil cooler clogged
By-pass valve malfunctioning
Air cooler clogged
Compressor element out of order
Degraded oil
Fault
Solenoid valve malfunctioning
Extreme low usage of compressor
Instruction book
Remedy
Consult Atlas Copco
Remedy
Check and have defective parts
replaced
Have element replaced
Have valve checked. Replace if
necessary
Have system checked by Atlas
Copco
Remedy
Check and correct, see
Operation instructions / During
operation
Check for cooling air restriction
or improve ventilation of the
compressor room. Avoid
recirculating of cooling air. If
installed, check capacity of
compressor room fan
Clean cooler
Have valve tested
Clean cooler
Consult Atlas Copco
Check service intervals, see
Preventive maintenance
schedule
Remedy
Replace valve
Increase loading profile (longer
and/or more load cycles
required)
If not possible, consult Atlas
Copco
2920 7109 23