Problem Solving - Atlas Copco GA 160 VSD Instruction Book

Instruction book
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
- Pressure dew-point too high
- Condenser pressure too high
or too low
- 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
APF192090
Fault
Ambient temperature too high Check and correct; if necessary, draw
Shortage of refrigerant
Refrigerant compressor does
not run
Evaporator pressure too high
Condenser pressure too high
Automatic drain system
clogged
Cooling water system or air
system clogged
Cooling water temperature or
air temperature too high
Electric power supply to
compressor is interrupted
Motor overload protection of
refrigerant compressor motor
has tripped
High-pressure switch tripped
Automatic drain system
clogged
Automatic drain system out of
order
Hot-gas by-pass valve
incorrectly set or out of order
Condenser pressure too high
or too low
Shortage of refrigerant
Remedy
cooling air via a duct from a cooler
place or relocate dryer
Have circuit checked for leaks and
recharged
See below
See below
See below
Have the system cleaned
Have cooling water system or air
system cleaned
Check and correct as necessary
Check and correct as necessary
Have motor checked
See above
Have system inspected
Have system checked
Have hot-gas by-pass valve adjusted
See above
Have circuit checked for leaks and
recharged
95