Compressed Air Dryer
882.03168.00
2/13/2023
26
Problem
Possible Cause
Possible Remedy
Material in drying hopper
cakes, or meltdown occurs.
Process temperature set too
high due to operator error.
Check resin manufacturer’s
data sheet for proper drying
temperature. Make sure
plant personnel are aware of
the correct process
temperature set point.
High temperature alarm not
set properly.
Reset high temperature
alarm.
Nothing displays when the
controller is turned on.
Process set point is out of
acceptable range.
Restore temperature
controller to factory pre-
sets.
Function set for degrees
Celsius (ºC), set point at
degrees Fahrenheit (ºF).
Verify correct Celsius or
Fahrenheit settings.
Process thermocouple not in
airflow.
Verify that the
thermocouple is properly
installed in the inlet tube.
No setting change possible
on temperature controller.
The internal mechanism is
not inserted properly into
the housing.
Properly insert the internal
mechanism into the housing.
The power supply is not
connected to its terminals
properly.
Properly connect the power
supply to the power supply
terminals.
No power is supplied, or the
supplied power is not within
the specified range.
Supply a voltage of 85 to 125
VAC to the power supply
terminals of the controller
or 220-240 V for higher
voltage units.
Disconnect switch or Control
Power switch not set to
ON
.
Control Power fuse blown.
Check control power fuse for
continuity. Turn disconnect
switch and control power
switch
ON
.
The key protection switch is
set to
ON
.
Set the key protection
switch to
OFF
.
