TROUBLESHOOTING SECTION 7
152
High pressure drop Excessive compressed
air flow or too low air inlet
pressure.
Check actual pressure
and flow through the
dryer.
This dryer is designed for a
maximum air flow. If too much
air is pumped into the dryer,
water removal capacity may not
be sufficient, resulting in liquid
carry-over downstream. Check
the rated flow of the air
compressor.
Inlet pre-filter clogged Replace the element Dryers with 2 or more heat
exchangers are equipped with a
25 micron, protective pre-filter.
Check it regularly and replace
when pressure drop is too high.
Contact your Sullair Distributor
for spares.
Freeze up Check that compressor
room ambient is above
5°C.
Frosting of the lines is an
indication that controls are set
too low. The following should be
done by an experienced
refrigeration technician.
Fan switch could have
failed in closed position
keeping fan on.
Controls may be adjusted in the
fields by means of the hot gas
bypass valve. Turn screw
clockwise to increase refrigerant
pressure setting which will
increase pressure dew point.
Turn screw in ¼ turn increments
until frost disappears. Allow 15
minutes for pressure
stabilization with air flowing.
Clogged heat exchanger Clean heat exchanger
with a reverse air flow.
Dryer are supposed to be used
with compressed air free of any
aggressive contaminants. Some
contamination may require extra
maintenance of the heat
exchanger. Contact your Sullair
Distributor.
PROBLEM
POSSIBLE CAUSE REPAIR COMMENTS
To Next Page
Loading...
Need help?
General
