Farm Fans C-2130B, Owner'S Manual, Page: 21 / 66

G. Set the Unloading Switch to MAN position and reset
the unload rate to 60%. Set the moisture control back
to match the displayed measured temperature. Again
switch the Unloading Switch to AUTO, pausing in the
OFF position for 5 to 6 seconds. Verify that the control
starts at the manual unload rate. Note that by decreas-
ing the moisture control set point temperature 95°F, the
unload rate will not exceed 100%.
13. Check safety shutdown devices
A. Meter roll monitor
Start dryer control circuit and turn Unload Auger Switch
to ON, position Unloading Switch to ON, and set
unload rate to minimum setting. Allow unload to oper-
ate for approximately five minutes. No shut down
should occur.
Set Unload Rate to 100% for at least 15 seconds then
position the Unloading Switch to OFF. In approximate-
ly three minutes, the dryer should shut down and the
meter roll monitor shutdown indicator inside the control
panel will be lit.
B. Low grain monitor and fill switch
Adjust the Load Timer (inside the ASC box) to a short
time period of approximately five minutes or less. Start
the dryer control circuit and set the Load Auger Switch
to ON. The Load Timer should not be powered and no
shut down should occur after a five-minute or longer fill-
ing time.
If the physical setup of the grain drying system permits
safe access to the fill switch (paddle switch), located on
the wet bin, perform the following test:
CAUTION: Use care to avoid falling and causing per-
sonal injury.
While the load auger is running, slowly rotate the fill
switch box counterclockwise by hand until the load
auger stops. The load auger should stop when the
switch box is rotated to a position 50-55° from horizon-
tal. Slowly rotate the box clockwise and the dryer
should restart at 15-20° before horizontal. Readjust fill
switch if required. See Fig. 4-1 for switch position dia-
gram.
Position the Load Auger Switch to AUTO. The Load
Timer should begin counting down and the dryer
should shut down after five minutes of loading. The
LOW GRAIN indicator light should be energized on the
control panel. Be sure to reset the Load Timer to the
appropriate time.
C. Discharge Shutoff Switch
Remove the shipping screw securing the hinged cover
on the discharge box if required. Check to see that the
cover works freely and seats tightly against the dis-
charge box approximately 1/4" from proximity switch.
Start the control circuit, turn the Unload Auger Switch
to ON, and Unloading Switch to MANUAL. Lift the
cover on the discharge auger approximately one inch.
The dryer should immediately shut down; however, no
monitor indicator will be energized.
14. Start the control circuit and then stop dryer operation.
Push the STOP button. The fan, burner, and augers
should immediately stop operating as the button is
depressed.
With the dryer properly functioning as described in the
previous steps, the unit can be considered ready for
drying operation. Refer to Section 5, Dryer Operation,
for procedure and control settings.
Shut off the Power Disconnect lever on the PSC box
and close fuel supply valves if you are not ready to
begin the drying operation.
19
Locator Hole - Assemble
to Dryer with Hole in
up Position
Switches "A" & "B"
Both Closed
A
B
Yellow
Black
Red
90
2 7
FREE HANG - DRYER
CALLING FOR GRAIN
4 1
4 2
Fig. 4-1 Top auger fill switch
Switch "A" Closed
Switch "B" Opens
15-20
PARTIALLY ACTIVATED -
DRYER ALM OST FULL
Yellow
Red
Black
Switches "A" & "B"
Both Open
FULLY ACTIVATED -
DRYER FULL
Yellow
Red
Black
Switch A = Top Auger Stop
Switch B = Top Auger Start