Atlas Copco GA 30+ Instruction Book page 167

Instruction book
Condition
Compressor stops or does not
start
Condensate drain remains
inoperative
Condensate trap continuously
discharges air and water
Evaporator pressure is too
high or too low at unload
2920 7180 30
Fault
Electric power supply to
compressor is interrupted
Thermal protection of
refrigerant compressor motor
has tripped
Drain system clogged
Drain out of order
Hot gas bypass valve
incorrectly set or out of order
Condenser pressure too high
or too low
Shortage of refrigerant
Remedy
Check and correct as necessary
Motor will restart when motor windings have
cooled down
Have system inspected
Clean the filter of the drain by opening the
manual drain valve.
On units with an electronic drain, check
functioning of the drain by pushing the test
button.
Have system checked. If necessary,
replace the drain.
Have hot gas bypass valve adjusted
See above
Have circuit checked for leaks and
recharged if necessary
165