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Alarm Message Cause Corrective Action Dryer Status
The process temperature
thermocouple is not connected
to the temperature controller.
Make sure the connections are
correct and tight.
PROCESS
SENSOR FAIL
The process
temperature
thermocouple is
open.
The process temperature
thermocouple is damaged.
Replace the thermocouple.
- Dryer Shuts Down:
- Process blower OFF.
- Process heaters OFF.
- Regen heaters OFF.
- Alarm light is ON
- Alarm horn is ON.
The regeneration temperature
thermocouple is not connected
to the temperature controller.
Make sure the connections are
correct and tight.
REGEN
SENSOR FAIL
The Regeneration
temperature
thermocouple is
open.
The regeneration temperature
thermocouple is damaged.
Replace the thermocouple.
- Dryer Shuts Down:
- Process blower OFF.
- Process heaters OFF.
- Regen heaters OFF.
- Alarm light is ON
- Alarm horn is ON.
Make sure the process filter is
clean. Clean or replace if
necessary.
Double check the alarm set
point. 35°F
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.
The drying temperature set
point is lower than dryer
capabilities. Check the dryer
specs.
Make sure all the hose
connections are tight.
PROCESS HIGH
TEMP
The process
temperature has
exceeded the alarm
set point.
Make sure the regeneration
timing cycle matches the
specs. If not contact Service
department.
- Dryer Shuts Down:
- Process blower OFF.
- Process heaters OFF.
- Regen heaters OFF.
- Alarm light is ON
- Alarm horn is ON
Portable Drying/Conveying Systems Chapter 6: Troubleshooting 50 of 63