Condition
Fault
Remedy
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
2920 7140 52
95
Summary of Contents for SF 15+
Page 1: ...INSTRUCTION BOOK OIL FREE SCROLL COMPRESSORS SF 15 SF 17 SF 22 SFD 11 SFD 15 SFD 22 ...
Page 2: ......
Page 16: ...2 2 Flow diagram Flow diagram of SF 15 SF 17 SF 22 Instruction book 14 2920 7140 52 ...
Page 18: ...Flow diagram of SFD 11 SFD 15 SFD 22 Instruction book 16 2920 7140 52 ...
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