Grain Systems PNEG-1702 - Manual (Page 68)

9. Vision/Dri-Tek Dryer Operation
68 PNEG-1702 ETL Listed GSI/FFI Portable Dryer Manual
17. After the time in Step 16 on Page 67 , 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 selected 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 approximately 10% longer
than the (approximate drying time) required for the target moisture. This allows the moisture in the
dryer to reach an even gradient top to bottom without having any highs or lows in it. It will however,
slightly over dry some of the grain.
Figure 9L
18. After the run time in Step 17 , test the moisture content. Test at least three (3) samples and average
the readings for accuracy. Having determined the average discharge moisture, calibrate the
incoming and outgoing moisture sensors on the dryer. To do this, press the Setup button again
and return to the “Select Hardware Setup Parameter to Modify” Screen. Press the M/C Setup button
and then press the Calibrate Moisture Sensors button. The “Moisture Sensor Calibration” window will
appear. Follow the example below to adjust the dryer to the moisture tester.
Example: The moisture tester gives an average moisture of 17%, but the moisture sensor on the
dryer reads 18.3%. Calibrate the dryer’s moisture sensor (-1.3%), thereby adjusting the dryer’s
moisture screen read 17%, matching the moisture tester. Once the calibration offset has been
entered for the moisture sensors touch the Accept/Next button.