SECTION 3 PRODUCT USER MANUAL
131
Water in system Excessive free moisture Check the separator
and drain system and com-
pressor after cooler
ahead of the dryer.
In some system there may be an
accumulation of free moisture in
the line ahead of the dryer. If this
moisture is pumped into the dryer
intermittently, the water removal
capacity may not be sufficient. A
water separator should be
installed in the line before the
dryer.
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 over-
flowed, dew point will go up and
protecting devices can switch off.
Clogged condenser fins Clear fins of all
obstructions
The clogged fins in the con-
denser 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 run-
ning, 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 adjust-
ment 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 1/4 turn increments to
allow 15 minutes for pressure sta-
bilization with air flowing. Be sure
that gauge indicates that pres-
sures stay in green zone.
Problem Possible Cause Repair Comments
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