Grain Systems PNEG-728 - Manual (Page 36)

Autoflow Operation
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restarted by pressing the start switch. When the
start switch is pressed the screen on the Dryer
Control Panel will read “Press Enter to Dry
Remaining Grain”. If the enter button is pushed
the dryer will restart without running the fill
system(s). The dryer will remain running until the
completion of the next Dump Cycle, after which an
“Out of Grain” error is displayed on the Dryer
Control Panel and the dryer stops.
If the Storage Chamber High-Limit Rotary
Switch becomes covered with grain during the
Dump Cycle the dryer will continue through the
Dump Cycle and will continue to the next Dry
Cycle. When the Dry Cycle is complete the unit
will not continue to the Dump Cycle. A “Storage
THEORY OF OPERATION/TERMINOLOGY
Chamber Full” error will be displayed on the
screen and the dryer will stop. The unit will not
dump automatically until grain has been removed
from the Storage Chamber.
If the dryer stops for any reason the Aera-
tion Fan will remain running if the Aeration Fan
Bypass switch is placed in the “continuos” posi-
tion. The Aeration Fan Bypass switch is located in
the side of the Fill System Control Box. If the
Aeration Fan Bypass switch is placed in the
“automatic” position the Aeration Fan stops
whenever the dryer stops.
Items in Italics are Defined in the
Dryer Terminology Section
Top Dry Autoflow Terminology
Actuator Control Box-The actuator control box
houses the linear actuator that controls the dump
chutes. The actuator also houses the two 12vDC
batteries and the 24vDC battery charger. The
actuator control box is mounted to the bin
sidewall.
Aeration Fan-The aeration fan is located at the
bottom on the outside of the bin and is used to cool
grain in the storage chamber. The aeration fan is
designed to deliver about 1/4 cubic feet of air per
minute per bushel of grain in the storage chamber.
The motor starter for the aeration fan is located in
the Fill System Control Box.
Aeration Fan Bypass Switch-The aeration fan by
pass switch is located on the side of the fill system
control box. When the aeration fan bypass switch
is placed in the “continuos” position the aeration
fan does not shut off with the dryer. When the
aeration fan bypass switch is placed in the “auto-
matic” position the aeration fan shuts off when the
dryer stops.
Aux. 1 Delay-The aux. 1 delay is used in both
single fill and double fill systems. The aux. 1
delay is located on the dryer control panel next to
the display screen. In single fill systems the aux. 1
delay controls how long fill system #1 runs after
grain reaches the drying chamber high level rotary
switch. In units with two fill systems the aux. 1
delay controls how long fill system #1 runs after
fill system #2 shuts off. This allows fill system #2
to clean out before stopping.
Airswitch-The airswitch is used to tell the com-
puter when the drying fan(s) have started so the
burner can be ignited or remain ignited. The
airswitch is attached to the master drying fan and
is mounted in the bin sidewall even with the
master drying fan. The airswitch operates by
sensing the increase in static pressure in the bin
after the drying fan(s) have started. In two fan
units the airswitch should be adjusted so that it
does not close until after the slave fan reaches half
speed.