Grain Systems PNEG-1459 - Manual (Page 24)

24 PNEG-1459 L Series Operators
Dry and Cool-Continuous Flow Operation
This section begins with step 7 and it is assumed that steps 1 through 6 in the start-up procedure described on page 22 have been
completed.
7. Touch the SETUP button at the bottom of the Dryer Operation screen. Once the Hardware Parameter screen is displayed
touch the DRYING MODE button. When the Select Drying Mode window appears touch the CONTINUOUS FLOW button to
select continuous flow drying mode. Then touch the EXIT button and return to the Hardware Parameter screen. Touch the M/C
SETUP button. When the Moisture Control Selection window appears select the BASIC : REGULATION OF GRAIN TEM-
PERATURE : 2 MR SETPOINTS moisture control option. Touch the EXIT button and return to the Dryer Operation screen.
8. Make sure the UNLOAD switch is OFF.
9. Open the main fuel supply valve on the tank if using LP gas, or open the fuel supply line if using natural gas. Turn on the
Maxon electric shut off valve, if so equipped, or open the manual shut off valve to allow fuel flow to the dryer.
10. The dryer should already be filled with grain. Turn the LOAD AUGER switch to the AUTO position. In both the auto and
manual positions, the dryer grain level switch will automatically keep the dryer full of grain. In the auto position the dryer will
shut down after a preset time period on the out of grain timer.
11. Turn each FAN switch to ON. The fan will start, and the switch will light up when air pressure is detected.
12. Start each burner by turning the HEATER switch to ON. After purging for approximately 10 seconds the burner will fire,
and the heater switch will light up. This indicates that the flame sensing circuit is sensing burner flame. For information concern-
ing burner adjustment see the Dryer pre start checks section of this manual. Set the plenum temperature setpoints to 180
o F.
13. Look in the Drying Charts section starting on page 36 for the DRY AND COOL chart settings that correspond to your
model of dryer. You will see the settings for (Initial Moisture) (Moisture Removed) (Approx. Dry Time) (1 Speed) (2 Speed
Low) (2 Speed High) pick the line that has your initial starting moisture. These are the settings we will be referring to during
this start up procedure.
14. Run the bottom fan(s) and heater(s) (to be used for cooling later) for about 20 minutes. This will start the bottom drying so
we can cool it before we begin to discharge grain.
15. Take the remaining number of burners to be started, divide that into the total drying time required, working up, start each
burner that many minutes apart. Run them about 10% longer than the (APPROX. DRYING TIME) total required for the
moisture you are trying to dry.
16. Example: 10% removal would be about 60 minutes, 15% removal would be about 85 minutes, and 20% removal would be
about 110 minutes. Add 10 minutes to insure that the grain is dry.
17. 20 minutes before the required drying time is finished turn the bottom heater OFF but let the fan run and cool this section
for about . Set the upper plenum thermostats to the decreed temperature (190°-230°F).
18. Turn the UNLOAD AUGER switch to MANUAL and set the METER ROLL SPEED, (MANUAL SPEED). To do this push
on 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 (see image below). Grain should begin to run at this
time. Run time for this is about 10% longer than the (APPROX. 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 having any highs or lows in it. It will
however, over dry some of the grain a little.
DRYER OPERATION - BASIC MOISTURE CONTROL