Grain Systems PNEG-728 - Manual (Page 40)

Autoflow Operation
40
The storage chamber high level rotary switch is
located in the storage chamber 3, below the fan
and heater unit(s). The storage chamber high level
rotary switch warns the computer when the storage
chamber is full.
Temperature Hold-Temperature hold is the state
the dryer is in when the dry timer has reached zero
but the grain temperature on the moisture control
thermostat has not reached the grain temperature
setpoint. The dryer will not enter into temperature
hold unless the moisture control thermostat switch
is placed in the “on” position. When the dryer is
in temperature hold “temp hold” will be displayed
on the screen on the dryer control panel.
Unload Delay-The unload delay is used in both
single fill and double fill systems. The unload
delay is located on the dryer control panel next to
the display screen. In single fill systems the
unload delay controls how long fill system #1 runs
TERMINOLOGY/START UP PROCEDURE
after the wet supply tank is emptied. In units with
two fill systems the unload delay controls how
long fill system #1 and fill system #2 run after the
wet supply tank is emptied.
Unload Timer-The unload timer is located on the
dryer control panel below the display screen. It is
a digital timer and controls how long the dump
chutes remain open during the dump cycle. The
setting of the unload timer will be detailed later.
Wet Storage Tank-the wet storage tank tempo-
rarily stores the wet grain that is to be loaded into
the drying chamber and dried. A wet storage tank
can be a hopper tank or a flat bottom bin.
Wet Supply Rotary Switch- The wet supply
rotary switch is located in the wet storage tank.
The wet supply rotary switch warn the computer
when the wet storage tank is empty.
Start Up Procedure
At the beginning of each harvest and before
filling the dryer will grain make sure to inspect the
dryer for rodent damage, and system integrity.
Enter the drying chamber and check each dump
hopper. Remove any obstructions. Test operate
the dryer using the pre-season checklist.
There are two fundamental things to control
with the Autoflow Top Dry (or any dryer); the
drying rate and the grain flow rate, and the drying
air temperature. We consider the best temperature
to be the highest one where the desired grain
quality is maintained. Corn used for live stock
consumption is dried at a maximum recommended
temperature of 200° Fahrenheit. Corn used for
different applications, and other grains may require
lower drying temperatures. By selecting a drying
air temperature a drying rage is established. To
achieve a desired final grain moisture content, the
grain flow rate is adjusted to match the drying rate.
Initial Dryer Start Up
1) Be sure the control power switch is off.
Turn on the main power supply disconnect
for the Autoflow control box, fan and
heaters, and all fill systems.
2) Pull out the emergency stop switches on
the Autoflow control box, fill systems
control box, and the actuator control box.
3) Set the switches on the Autoflow control
box as follows:
Moisture Control switch On
Aeration Fan switch Auto
Load Auger switch Off
Fan switch Auto
Heater switch Auto
Dump switch Auto
Dry and Hold switch Off
24 Volt Power switch On