SECTION 7 TROUBLESHOOTING
151
Water in system Excessive compressed
air inlet temperature.
Be sure that dryer is
working lower than
design conditions
The dryer is designed for
working into calculated design
conditions. Should the
conditions be exceeded, the
dryer will be overflowed, dew
point will go up and protecting
devices can switch off.
Clogged condenser fins Clear fins of all
obstructions
The clogged fins in the
condenser will restrict air
passage and reduce refrigerant
capacity causing water
downstream. Fins should be
periodically checked and
cleaned.
Shortage of refrigerant Fix the leak and add a
charge of refrigerant.
Loss of refrigerant will cause
improper functioning. A
qualified, refrigeration specialist
should perform the necessary
repairs, or factory should be
contacted if the units is in
warranty.
Refrigeration system is
not functioning
Check to be certain
refrigerant compressor is
running
To check if the compressor is
running, check compressor-on
light. It is possible for the fan to
be operating but not the
compressor. Compressor not
running can be caused by
several factors. A qualified
refrigeration technician should
check all refrigerant and
electrical controls.
Excessive pressure dew
point
Readjust refrigerant
evaporating pressure
The refrigerant pressure
adjustment valve is identified by
a label. Turning the adjustment
screw counter clockwise will
decrease the refrigerant
pressure and lower the dew
point. Adjust valves in ¼ turn
increments to allow 15 minutes
for pressure stabilization with air
flowing. Be sure that gauge
indicates that pressures stay in
green zone.
PROBLEM
POSSIBLE CAUSE REPAIR COMMENTS
To Next Page
Loading...
Need help?
General
