Grain Systems PNEG-1702 - Manual (Page 63)

9. Vision/Dri-Tek Dryer Operation
PNEG-1702 ETL Listed GSI/FFI Portable Dryer Manual 63
14. Run the bottom fan (to be used for cooling later) and heater(s) for, approximately 20 minutes. This
will start the bottom drying, so it can cool before discharging grain.
15. Run the fans and burners for approximately 10% longer than the estimated dry time for the incoming
moisture. Example: Ten points removal is approximately 60 minutes. -10% of 60 minutes is
6 minutes, so run the fan/heaters approximately 66 minutes.
16. Twenty minutes before the required drying time is finished, turn the bottom heater OFF but
let the fan run and cool this section. Set the upper plenum thermostats to the recommended
temperature (190°F-230°F).
17. Turn the Unload Auger switch to MANUAL and set the meter roll speed (manual speed). Remember
that Manual is a true manual operation, with no moisture control. The meter rolls will run at the speed
that you select using the meter roll speed encoder. To do this, press the meter roll adjustment knob.
When the “Modify Meter Roll Setpoints” window appears, turn the meter roll adjustment knob until
the speed indicator is set to the speed suggested for 1 Speed. Grain should begin to run at this time.
Run time for this is about 10% longer than the (approximate drying time) required for the moisture
you are trying to dry. This allows the moisture in the dryer to reach an even gradient top to bottom
without any highs or lows in it. It will however, slightly over dry some of the grain.
Figure 9F
18. DO NOT ADJUST THE DRYER FOR MOISTURE DURING THIS PROCESS OR IT WILL
ESTABLISH HIGH AND LOW SWINGS IN THE MOISTURE AND IT WILL TAKE SEVERAL HOURS
TO RESOLVE.
19. After the run time in Step 17 , set the moisture control. Turn the Unload switch to AUTO. Push the
meter roll adjustment knob. When the “Modify Meter Roll Setpoints” window appears, check that
2 Speed is selected. Set the low speed by pushing the meter roll speed adjustment knob until the low
speed indicator turns red and then turning the knob to the desired low speed settings. When low
speed is set, push the meter roll adjustment knob until the high speed indicator turns red, then turn
knob to the desired high speed setting. Set the high and low speed settings (as close as possible) to
the values given in the drying time tables. Touch the Accept/Exit button and return to the Default
Operation Screen. IMPORTANT: The high speed setting must be a higher value than the low
speed setting.