Grain Systems PNEG-1459 - Manual (Page 19)

19 PNEG-1459 L Series Operators
TEST FIRING
Approximate settings should be:
LP Gas Hi-Fire 6-15 PSI (41-102 kPa)
Lo-Fire 2-6 PSI (14-41 kPa)
Natural Gas Hi-Fire 6-10 PSI (41-69 kPa)
Lo-Fire 1-3 PSI (7-20 kPa)
If the burner remains on hi-fire and does not cycle, increase the regulator setting on the propane models, or the supply valve
on the natural gas models in order to reach the plenum set point. If the burner remains in lo-fire and does not cycle, slightly
decease gas pressure with the lo-fire adjustment screw on the cycle solenoid. If the gas pressure is decreased too much a
popping or fluttering sound will be heard. This popping and fluttering should not be allowed to continue or damage to the
burner will occur. Also, anytime the high pressure side is adjusted, the low pressure side needs to be checked. Repeat the test
for each fan/heater unit.
Note: If the flame sensor fails to detect a burner flame or is defective and signals a dryer shutdown all systems will shut
down except for the blower motor. This is to prevent wear on the blower motor curcuit from repeated start ups and shut downs.
DRYER SHUTDOWN
To shut down the dryer,
1. Close the fuel supply valve at the tank or valve along the fuel line.
2. If the burner is operating, let the dryer run out of fuel, and it will shut down automatically due to loss of flame.
3. Close the fuel valve at the dryer, and press the dryer power stop button.
4. Turn off the control power.
5. Turn off the safety disconnect handle on the front of the power box, and turn off the main power to the dryer.
EMERGENCY
In case of emergency push the dryer stop button or the emergency stop button. This will interrupt power to the control panel
and the fan, burner and all augers will stop immediately.