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Fuel Delivery
In both examples it is important to first verify that fuel is being delivered to the dryers:
• Before opening the fuel line to full OPEN, make sure that the plenum is heating up correctly.
• For LP units: The 3/4” return line from the vaporizer MUST be warm to the touch.
• Open the fuel line completely and verify the pressure settings on each of the system regulators:.
– LP systems = 4.0 to 6.0 PSI
– NG systems = 3.0 to 5.0 PSI
4.4.1 Example A: Batch Drying
In this example output grain is directed to dry bin grain storage.
• After the dryer has been filled with wet grain, BATCH mode is used to begin the drying process
• After BATCH drying for approximately 30 minutes, use the FILL/EMPTY BYPASS option to move some grain
through the dryer. This short bypass (5 minutes) moves the cooler, higher moisture corn to the heat ducts,
increasing the uniformity of grain drying. This also prevents over-temperature exposure to the drier corn
kernel.
• Moisture can be monitored on the DryerMaster STATUS screen. (Navigate from the MAIN MENU screen to
the TROUBLESHOOTING screen, to the DryerMaster STATUS screen)
• Once the output grain is within acceptable range for storage conditions, AUTO DRYING mode can be used
with the DryerMaster Moisture controller once adequate data has been collected.
4.4.2 Example B: Auto Drying
• After the dryer has been filled past the low dryer switch, set the discharge equipment so that the grain
output from the rear of the dryer is directed back into the wet bin.
• Starting on the START DRYER screen, set the temperatures so that the hottest temperature is set on to the
highest burner (#1) and the temperatures decrease in each section going down through the dryer.
• For example: a three-burner dryer drying 28% moisture #2 Yellow Corn would have the highest temperature
of 220 °F in the top burner #1 and the temperature would decrease in 20°F - 40°F increments moving down
through the dryer. Burner #2 at 180°F - 200°F and burner #3 at 160°F - 180°F.
• If cooling floors are present on the dryer, run in the all heat configuration until the moisture has reached an
acceptable level for storage limitations in the dry bin.
• Go to the START DRYER screen.
• The grain moving through the dryer at this point should be discharged back to the wet bin.
• After the moisture has been brought down to an acceptable level, divert the grain to the dry bin and make
sure that some cooling is applied to the grain. Ideally, the grain should be as close to ambient temperature
as possible upon exit of the dryer assuming limited aeration capabilities of the dry bin.
4. OPERATION CONTINUOUS MIXED-FLOW GRAIN DRYER WITH COMMANDER CONTROL SYSTEM
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