Quincy Compressor QOFT 20, Instruction Book

Page: 68 / 84

8 Faults and remedies
Warnings
Problem solving, compressor
Condition Fault Remedy
Compressor capacity or working
pressure lower than normal
Air consumption exceeds
capacity of compressor
Check pneumatic plant
Safety valves leaking Remove leaking valve and have it
inspected
Oil pressure too low Oil level too low Top up oil level between the 2 lines
on the sight-glass
Oil filter clogged Replace filter
Air temperature above normal Inlet temperature too high due to
bad room ventilation or
recirculation of cooling air
Improve ventilation of compressor
room and avoid cooling air
recirculation
Air filter clogged Replace filter
Condensate is not discharged
from condensate traps during
operation
Discharge flexible clogged Check and correct as necessary
Electronic water drain
malfunctioning
Consult Quincy
LED's of electronic water drain do
not light up
Compressor is running unloaded LED's will light up when the
compressor is loaded again.
Power supply to EWD's faulty Check power supply. Compare
power supply with voltage
mentioned on data label of EWD
Power supply board defective Check and replace as necessary
No condensate discharged when
pressing test button on EWD
System pressure lower than 0.8
bar(e)/11.6 psig
Load the compressor; as soon as
the system pressure exceeds 0.8
bar(e), condensate will be
discharged
Condensate inlet and/or outlet
blocked
Check and correct as necessary
Control board defective Check and replace if necessary
Solenoid valve defective Check and replace if necessary
Condensate only discharged
when test button is pressed
Sensor dirty Clean sensor
Instruction book
6 6 9829 3199 7 4
• Before starting any maintenance or repairs, stop the compressor, wait until it has
stopped.
• Close the air outlet valve and press the test button on top of the electronic water
drains to depressurize the air system.
• Open the isolating switch (customer's installation) to switch off the voltage to the
compressor.
• Apply all relevant Safety precautions during maintenance or repair .