Grain Systems PNEG-1459 - Manual (Page 22)

22 PNEG-1459 L Series Operators
DRYER OPERATION - BASIC MOISTURE CONTROL
CONTINUOUS FLOW DRYING MODE USING BASIC MOISTURE CONTROL
Full Heat-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 20 & 21
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 the valve in 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 using 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 FULL HEAT 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 fan(s) and heater(s) for about 10% longer than the (APPROX. DRYING TIME) required for the moisture you are
trying to dry.
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 54 minutes, 15% removal would be about 76 minutes and 20% removal would be
about 100 minutes. Add 10 minutes to insure that the grain is dry.
17. After the time in step 14 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 (see
image below) 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 (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.