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Temperature Controller Alarm and/or
Regen Heater Temp Switch and/or
Process Heater Temp Switch and/or
Redundant Temp Safety
Blower Overload
Valve Motor Time-Out
No Alarms
4-4 Auto-Tuning the Dryer
HIGH TEMP
PROC BLWR
VALVE MTR
HEAT 35
COOL 30
SYSTEM
NORMAL
1. For Auto-tuning, press the level key once. The AT screen will show with the setting OFF.
2. Press the
UP arrow to change the setting to ON.
3. Press the level key again to go back to the Temperature Screen. Your actual temperature will
start to flash for about 10-20 minutes with the temperature fluctuating up and down during that
period. After the flashing stops, it means auto-tuning has finished.
4-5 Shutting Down the Dryer
1. Turn off the conveying system supplying the drying hopper.
2. When processing is complete, close the hopper slide gate and shut down any in-line companion
equipment, such as the aftercooler.
3. Turn the Dryer
ON/OFF selector switch to OFF.
Dehumidifying Dryers Chapter 4: Operation 32 of 53