Atlas Copco GA 30+, Instruction Book

Page: 167 / 190

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