TROUBLESHOOTING SECTION 7
148
Dryer is switched ON,
indicator Light is lit and
but the refrigerant
compressor does on turn
ON (Dryer is not
functioning)
Excessive ambient
temperature
Be sure that dryer is
working in temperatures
lower than the design
conditions. Designed
conditions and correction
factors are described in
this manual .
A high ambient temperature
may cause the refrigerant
system to operate at higher than
normal pressures. Results will
be higher than normal
evaporator temperature.
Important: adequate air
circulation around the dryer, and
proper ventilation in the
equipment room should
guarantee a low enough
ambient temperature.
Excessive temperature
on crankcase of
compressor.
Allow time to compressor
to cool down. Reason
may be a possible
maladjustment of hot gas
bypass or shortage of
refrigerant
Compressor is protected
against overly high
temperatures of the crankcase
by a thermal switch called
“klixon”.
Klixon can be located inteRCally
in the refrigerant compressor or
under the protective cover with
the electrical connections to the
compressor.
Excessive compresser air
inlet temperature.
Be sure that dryer is
working in temperatures
lower than
design conditions.
The dryer is designed for
working into calculated
conditions (see description in
this manual). If conditions are
exceeded, the dryer will be
overflowed, dew point will go up
and protecting devices can
switch off.
PROBLEM
POSSIBLE CAUSE REPAIR COMMENTS
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