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Large Dehumidifying Dryers Operation 40
PF - PROCESS FILTER
RF - REGEN FILTER
CV - CLOSED LOOP VALVE
BV - BED SWITCH VALVE
PS - PROCESS TEMP SWITCH
RS - REGEN TEMP SWITCH
PH - PROCESS HI TEMP Screen 6.
PL - PROCESS LOW TEMP
RH - REGEN HI TEMP
DP - DEWPOINT
PR - REDUNDANT SAFETY
5-4 Auto-Tuning the Dryer
1. For Auto-tuning, press the beige button once. The AT screen will show with the
setting OFF.
2. Press the UP arrow to change the setting to ON.
3. Press the beige button 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.
5-5 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 OFF/ON/START selector switch to OFF.
4. Turn the system ON/OFF switch to OFF.
5. If needed, empty the drying hopper.
6. For maintenance or a long term shutdown, open (de-energize) the electrical
disconnects at the dryer and at the power drop.
ALARMS :
PB RB
BV PS RS
PH PL RH