Grain Systems PNEG-728 - Manual (Page 15)

15
Autoflow Operation
Electronic Monitoring
Control System
The Electronic Monitoring Control System
controls all timing functions and safety circuit
checks. It is designed to simplify dryer operation
by providing printed messages and warnings on its
liquid crystal display (LCD).
Turning On The Electronic Monitoring
Control System
Turn the control power switch to the “on”
position. The monitor will display a copyright
message, software version number, total running
time in hours and minutes and the model number,
and the serial number and current time and date.
When the serial number and current time and date
are displayed, press the reset button to activate the
controller and enter the main drying screen.
Setting The Dry, Cool And Unload Timers
These switches are used to set the dry, cool
and dump cycle times. The current settings on
these timers are displayed directly above their timer
button. To change the setting of these timers do the
following:
1) Press the dry, cool or unload timer
button.
2) Press the modify button.
3) Press the increase or decrease button to
adjust the settings.
4) Press the enter button.
5) To enter the new value into memory
immediately, press the reset button.
During operation, the remaining time on
each timer is displayed on the screen. If the power
goes out or the dryer is stopped, these times are
saved by the controller. When the dryer is restarted,
the timers will continue timing down. The timers
will return to their initial settings by pressing the
reset button. The cool timer is not used in an
Autoflow system.
CONTROL SYSTEM
Setting The Aux. 1 Timer
The value set on the aux. 1 timer acts as a
buffer to allow grain to fall away from the drying
chamber low level rotary switch after the drying
fans start without giving an error. When grain
reaches the drying chamber low level rotary
switch, the drying cycle starts (if the fan switch is
placed in the “auto” or “on” position) and the aux.
1 timer begins to time down. If grain falls away
from the drying chamber low level rotary switch
before the time on the aux 1 timer reaches zero, no
error is given and the dryer continues in the drying
cycle. If grain falls away from the drying chamber
low level rotary switch after the aux. 1 timer
reaches zero, a drying chamber no grain error is
given and the dryer shuts down. The aux. 1 timer
should be set long enough so that the fill system(s)
have sufficient time to make up the grain that falls
away from the drying chamber low level rotary
switch when the fan(s) and heater(s) start; but,
should not be set too long. If the linear actuator
fails to retract, the dump chutes and grain runs
directly from the drying chamber to the storage
chamber without being dried, then the grain would
fall away from the drying chamber low level
rotary switch and a drying chamber no grain error
would be given. If the aux. 1 timer is set too long
and the linear actuator failed to retract, an unac-
ceptable amount of wet grain could flow from the
drying chamber to the storage chamber before a
drying chamber no grain error is given and the
dryer shuts down. The aux. 1 timer is set using
the same procedure as the dry and unload timers,
but the reset button does not need to be pressed to
enter the new values into memory immediately.
Setting the Out of Grain Timer
The value set on the out of grain timer is
the amount of time that grain has to reach the
drying chamber low level rotary switch when the
dryer is refilling after the dump cycle in an
Autobatch system. When the dump cycle is
complete, the out of grain timer begins to count
down. If grain does not reach the drying chamber
low level switch before the out of grain timer
reaches zero, the dryer will give an out of grain
error and shut down. The out of grain timer is not
used in an Autoflow system.