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PRODUCT USER MANUAL
Problem
The unit will not run or
cycles off and on.
Error sign occurs on
digital temperature
control device
24
Possible Cause
Excessive compressed air
inlet temperature.
Excessive ambient tem-
perature
Clogged condenser fins
Shortage of refrigerant
The dew point is too low or
too high.
Repair
Design conditions and correc-
tion factors are described in
this manual.
Be sure that dryer is working
in ambient temperatures
below design conditions.
Designed conditions and cor-
rection factors are described
in dryer . Be sure that dryer is
working lower than design
conditions.
Clear fins of all obstructions.
Fix the leak and add a charge
of refrigerant.
Check refrigerant gas and
make sure that the working
conditions are within the cor-
rect range.
SECTION 2
Comments
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 may trip.
A high ambient temperature may
cause the refrigerant system to
operate at higher than normal
pressures. Results will be a
higher than normal evaporator
temperature.
Important: there should be ade-
quate air circulation around the
dryer, and proper ventilation in
the equipment room should guar-
antee a low enough ambient tem-
perature.
The clogged fins in the con-
denser will restrict the air pas-
sage and reduce the refrigeration
capacity, causing high tempera-
ture in the evaporator.
Fins should be periodically
checked and cleaned.
Loss of refrigerant will cause
improper functioning. Dryers are
equipped with a temperature
switch which maintains the
amount of refrigerant to maintain
proper cooling of the compressor.
A shortage of refrigerant may
cause suction line to become
very hot, causing the temperature
switch to trip.
A qualified refrigeration specialist
should perform the necessary
repairs.
If there is not enough refrigerant-
gas or if the working temperature-
and inlet temperatures are very
high, the dew point will increase.
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