Atlas Copco GA 160 VSD, Instruction Book

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Warranty and product liability
Use only Atlas Copco authorized genuine parts. Any damage or malfunction caused by the use of unauthorized
parts is not covered by Warranty or Product Liability.
General
The following remarks should be kept in mind:
• Keep the dryer clean.
• On air-cooled dryers, brush or blow off the finned surface of the condenser regularly.
• Regularly test the EWD.
8.3 Problem solving
Faults and remedies
Condition Fault Remedy
- Pressure dew-point too high Ambient temperature too high Check and correct; if necessary, draw
cooling air via a duct from a cooler
place or relocate dryer
Shortage of refrigerant Have circuit checked for leaks and
recharged
Refrigerant compressor does
not run See below
Evaporator pressure too high See below
Condenser pressure too high See below
Automatic drain system
clogged Have the system cleaned
- Condenser pressure too high
or too low Cooling water system or air
system clogged Have cooling water system or air
system cleaned
Cooling water temperature or
air temperature too high Check and correct as necessary
- Compressor stops or does not
start Electric power supply to
compressor is interrupted Check and correct as necessary
Motor overload protection of
refrigerant compressor motor
has tripped Have motor checked
High-pressure switch tripped See above
- Condensate drain remains
inoperative Automatic drain system
clogged Have system inspected
- Condensate trap continuously
discharges air and water Automatic drain system out of
order Have system checked
- Evaporator pressure is too high
or too low at unload Hot-gas by-pass valve
incorrectly set or out of order Have hot-gas by-pass valve adjusted
Condenser pressure too high
or too low See above
Shortage of refrigerant Have circuit checked for leaks and
recharged
Instruction book
APF192090 95