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Excessive ambient temperature
Clogged condenser fins
Shortage of refrigerant
The dew point is too low or too high.
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.
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 adequate air circulation
around the dryer, and proper ventilation in the
equipment room should guarantee a low enough
ambient temperature.
The clogged fins in the condenser will restrict the air
passage and reduce the refrigeration capacity,
causing high temperature 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.
The unit will not run or
cycles off and on.
Error sign occurs on
digital temperature
control device
Problem
Possible Cause
Repair
Comments
