Faults and remedies, water separator (WSD)
For all references below, consult section Servicing the water separator drain.
Condition Fault Remedy
Condensate is not discharged
from the separator
Discharge pipe clogged Check and correct as necessary
Drain valve of separator
malfunctioning
Remove drain valve assembly, clean and
check
For separator with EWD
(electronic water drain): EWD
malfunctioning
Consult Atlas Copco
Faults and remedies, filters
For all references below, consult section UD+ and PDp+ filter change.
Condition Fault Remedy
The filter produces a whistling
noise
Filter bowl not correctly
mounted
Fit the filter bowl correctly
Bad filtration Filter element damaged
Water in sightglass
Replace
Check functioning of water separator (WSD)
Insufficient air leaves the filter
Clean the filter bowl and replace the filter
element
QDT filter
Condition Fault Remedy
Bad filtration Activated carbon lifetime
exceeded
Replace the activated carbon at the
intervals
Wet air from dryer in
activated carbon
Check proper functioning of the dryer
Activated carbon not
compressed
Check if spring is (properly) fitted
Too high CO concentration at
outlet
Wet air from the dryer Check proper functioning of the dryer
Replace the desiccant at indicated intervals
Too much CO at inlet Check proper working conditions
Faults and remedies, ancillaries
Condition Fault Remedy
Inlet solenoid completely or
partially closed/opened
•
Electrical fault
•
Mechanical fault
•
Check wiring
•
Replace defective parts
Pressure sensors:
malfunctioning
Mechanical defect (e.g.
diaphragm ruptured)
Replace defective parts
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