Atlas Copco SF 1 Instruction Book page 42

Condition
Dew point too high
Condenser pressure
too high or too low
Motor of refrigerant
compressor stops or
does not start
Evaporator pressure is
too high or too low
Condensate trap
continuously
discharging air an
water
Electronic condensate
drain inoperative
40
Fault
Air inlet temperature too high
Fuses blown
Shortage of refrigerant
Refrigerant compressor does not run
Evaporator pressure is too high
Condenser pressure is too high
Fan control switch out of order
Condenser fan motor out of order
Ambient temperature too high
Condenser externally clogged
The internal thermal protection of the
motor has tripped
Electric power supply to refrigerant
compressor interrupted
Condenser pressure too high or too low See above
Shortage of refrigerant
Hot gas bypass valve incorrectly set or
out of order
Automatic drain out of order
Drain system clogged
Instruction book
Remedy
Check and correct; see section
Reference conditions and limitations
Check fuses and remedy the cause.
Have circuit repaired or recharged.
See below
See below
See below
Have switch replaced
Have fan motor inspected
Improve ventilation of compressor room,
see section Installation proposal
Clean condenser
Compressor will restart when the motor
windings have cooled down.
Check and correct as necessary
Have circuit repaired or recharged
Have the valve adjusted or replaced
Have the drain checked. Replace as
necessary
Clean the filter of the automatic drain by
opening the manual drain valve. Check
functioning of the drain by pushing the
test button.
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