Atlas Copco SF 1, Instruction Book

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