Grain Systems PNEG-1707 - Manual (Page 41)

8. Dryer Operation
PNEG-1707 TM-Series Tower Dryer 41
6. The centering point about which the unload rate will vary, is determined by the manual unload rate
at the time that the dryer is placed into automatic operation. When using the “5 Speed” option, the
dryer will automatically adjust this centering point throughout the day if the Auto Centering button
is pressed on the Continuous Flow Setup screen.
(See Figure 8D on Page 40.) It is helpful when
restarting a dryer after a lengthy drying run to set the manual unload rate to the same rate as the
last operating unload rate reading indicated on the dryer status chart under the MRO column.
(See Figure 8B on Page 39.) Operating the dryer in the manual mode until it is warmed up at this
unload rate before switching the Auger Unload switch to AUTO in either the “Variable” or “5 Speed”
mode will ensure a more accurate dryer unload control.
7. The parameters for “5 Speed operation” are preset for typical dryer operation. They can be modified
if desired by pressing 5 Speed Setup. (See Figure 8D on Page 40.) Changes to the parameters can
be made in the resulting screen that appears. (See Figure 8F.)
Figure 8F
8. For accurate moisture control, it is important that the moisture sensors on the dryer be calibrated.
It is recommended that the dry sensor be calibrated daily. To calibrate the moisture sensors, press
the Calibrate Moisture Sensor button on the Setup screen.
(See Figure 8C on Page 39.) The
following screen will appear. (See Figure 8G.) To calibrate, compare a moisture sample on a
moisture tester to the dryer’s moisture reading. If for example, the tester gives a reading of 15.7%
and the dryer’s dry sensor reads 14% enter a dry moisture offset of +1.7% so that the dryer reading
will compare with the moisture tester reading.
Figure 8G