Grain Systems PNEG-1458 - Manual (Page 35)

7. Test Firing
PNEG-1458 T-Series Tower Dryer 35
Load Auger
With the grain supply shut off, quickly bump the Load Auger switch to manual and check all filling
equipment for proper rotation.
Turn the Load Auger switch to the AUTO position. The filling equipment should run for eight (8) minutes
and then the dryer will shut down leaving the safety shut down message (out of grain warning) displayed.
Press the Dryer Power Stop button to reset the panel, then press the Start button.
Unload Auto Operation
To check auto operation place the Unload switch in the AUTO setting. Check unload equipment for
proper rotation.
Unload Manual Operation
To check manual operation move the Unload switch to the MANUAL position. Check unload equipment
for proper rotation.
Accutrol Sweep Metering System Operation
To check the metering operation turn the knob clockwise and the metering speed should increase.
The metering system should be turning clockwise when viewed from above. Turning the knob
counterclockwise will decrease the speed. When the meter system is set to maximum (1000) the meter
roll speed should be 2.4 RPM. Turn the Unload switch OFF after these checks are complete. The bottom
auger will continue to run for 60 seconds (default clean out delay setting) after the switch is turned OFF to
allow for clean out.
Fan Switch
Momentarily turn the Fan switch to ON and observe the fan for rotation.
Burner Safety
To check the burner safety function, first make sure the main gas valve is OFF. Turn the Fan switch ON
and allow the fan to start. Then, turn the Heater switch ON. The dryer will go through a 15 seconds purse
time follower by a 10 seconds ignition time. The dryer will them shut down. The safety message, “Ignition
Failure Fan #” will appear.
Burner Test Fire
Test fire the burner by starting the fan. Adjust the plenum temperature set point to 140°F (60°C). Turn ON
the fuel supply them, turn the Burner switch to ON. After the 15 seconds purge time, manually latch the
electronic shut off valve (maxon valve) during the ignition time. The burner should illuminate and the
plenum temperature will start to increase. Adjust the High-Fire adjustment valve so that the burner
pressure gauge reads 25-30 ounces of pressure.
(See Figure 7A on Page 36.) When the plenum
temperature reaches the set point, the cycle solenoid will close. Adjust the Low-Fire valve so that the
burner pressure gauge reads 6-8 ounces of pressure. The computer should cycle the burner between high
and low 3 to 4 times a minute. If, during normal operation, the burner remains on High-Fire or the dryer
does not get to operating temperature, slightly open the High-Fire valve. If the burner stays on
Low-Fire and does not cycle, slightly close the Low-Fire valve.