Grain Systems PNEG-728 - Manual (Page 18)

Autoflow Operation
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displayed.
9). The ninth variable is the airswitch
test. Use the increase and decrease buttons
to toggle between yes or no. If no is
selected, the dryer does not require proof
of airflow before the burner lights. If yes
is selected, the dryer requires proof of
airflow to light the burner. Each time the
dryer control power is shut off, the
airswitch test defaults to yes.
10). The tenth variable is the fan delay.
The fan delay is the delay in seconds
between the starting of the master fan unit
and the slave fan unit. In systems with
220v 1-ph electrical power, the fan delay
should be set at small value, less than 3
seconds. If the fan delay is set too long,
the slave fan could rotate fast enough
backwards to start in a reverse rotation.
Use the increase and decrease buttons to
select the fan delay. Press the enter button
when the correct fan delay is displayed. In
single fan units the fan delay is not appli-
cable.
11). The eleventh variable is the high
flame delay. The high flame delay is the
amount of time the burner remains in low
fire on ignition. In normal operation the
high flame delay is set at one second. Use
the increase and decrease buttons to select
the high flame delay. Press the enter
button when the correct high flame delay
is displayed.
12). The twelfth variable is the status
of the wet grain and drying chamber low
level rotary switches. By pressing the dry
timer switch, the user can directly enter the
shutdown history retrieval. By pressing the
unload timer switch, the status of these two
rotary switches can be altered. Use the
increase and decrease buttons to make the
selection. Press the enter button when the
correct selection is displayed. When the
wet supply test is on, the dryer monitors the
wet supply rotary switch. When the wet
supply test is off, the dryer does not
monitor the wet supply rotary switch. The
computer responds as though there is wet
grain in the wet storage tank. When the
chamber low test is off, the dryer does not
monitor the drying chamber low level
rotary switch. The computer responds as
though there is grain in the drying chamber
against the low level rotary switch. When
the chamber low test is off, the display on
the dryer control panel reads “yes” at the
grain low level status line.
After the set-up mode is complete
the user is taken directly to the shutdown
history retrieval. To view past shutdowns
and the time and date the shutdown oc-
curred, press the decrease button. Press the
enter button at any time to return to the
main drying screen.
CONTROL SYSTEM