Grain Systems PNEG-728 - Manual (Page 27)

27
Autoflow Operation
Auxiliary Fill Motor Overload
The thermal overload, in the fill system control
box for fill system number two; has tripped,
indicating an over current condition. Make sure
the emergency stop switch on the fill system
control box is pulled out as this will inhibit the
motor starter from engaging. The overload must
be reset manually. Electrically there is a loss of
12vDC on J4-16 on the input/output board.
Aeration Fan Motor Overload
The thermal overload, in the fill system
control box for the aeration fan; has tripped,
indicating an overcurrent condition. Make sure the
emergency stop switch on the fill system control
box is pulled out as this will inhibit the motor
starter from engaging. The overload must be reset
manually. Electrically there is a loss 12vDC+ on
J4-17 on the input/output board.
Autoflow Fan and Heater Control Box
The Autoflow fan and heater control box
mounted on the fan heater unit(s), houses the
motor starter, Fenwall ignition-flame detection
board, and all circuitry involved with the control of
the fan and heater unit. Two service switches are
located on the front panel of the Autoflow fan and
heater control box.
Fan
This switch allows the user to turn off the
drying fan while at the fan and heater unit. It the
Autoflow is running, and the fan is running, the
fan will stop when the fan service switch is placed
in the “off” position, but the dryer will continue
running as though the fan was on. If the burner is
running when the fan service switch is placed in
the “off” position, the burner will shut off also.
The fan service switch light on the master fan
lights up when the airswitch closes. In normal
operation the fan service switch should be left in
the “on” position.
Heater
This switch allows the user to turn off the
burner while at the fan and heater unit. If the
Autoflow is running, and the burner is running, the
burner will stop when the heater service switch is
placed in the “off” position, but the dryer will
continue running as though the burner was on.
When the heater service switch is placed in the
“off” position, the fan does NOT shut off. When
the heater service switch is placed back to the ”on”
position, the unit reignites after the purge delay.
The heater service switch light lights up when the
burner is on. In normal operation, the heater
service switch should be left in the “on” position.
CONTROL SYSTEM