Specifications

Portable Drying/Conveying Systems Chapter 6: Troubleshooting 60 of 76
Alarm Message Cause Corrective Action Dryer Status
Make sure the process filter is
clean. Clean or replace if
necessary.
Double check the alarm set
point. (35°F)
Desiccant may be
contaminated and blocking the
air flow. Check desiccant,
replace if necessary.
Check the return air
temperature, if it is higher than
150°F, an after-cooler is
required.
The regeneration
thermocouple may be touching
the heater element. Replace
the thermocouple.
REGEN HIGH
TEMP
The regeneration
temperature has
exceeded the alarm
set point.
If the dryer is shut down
improperly in mid process of
regeneration heating, the heat
will be trapped inside and
upon re-starting the dryer, the
alarm will be generated. Allow
few minutes for the heat to
dissipate for the chamber.
Dryer will resume its normal
process.
- Dryer Shuts Down :
- Process blower OFF.
- Process heaters OFF.
- Regen heaters OFF.
- Alarm Message ON.
- Alarm horn is ON.
Check the positioning of the
thermocouple inside the air
inlet of the drying hopper. The
tip of the thermocouple should
be centered to the tube, and
not touching any metal part of
the tube.
Make sure all the hose
connections are tight.
For drying temperature of
250°F or higher, delivery air
hose should be insulated.
Check the process heater
fuses. Replace if necessary.
Check the heater contactors.
Replace if necessary.
Check the heaters. Replace if
necessary.
PROCESS LOW
TEMP
The process
temperature did not
get within the alarm
set point.
Check incoming voltage to the
dryer specs.
- Dryer Normal :
- Process blower ON.
- Process heaters ON.
- Regen heaters ON.
- Alarm Message ON.
- Alarm horn is OFF.