Airstream 1100 SERIES SINGLE FAN PNEG-339 - Manual (Page 26)

26
QUICK START UP PROCEDURE
ADJUSTING THE MOISTURE CONTROL
1. Each 5
°
on the MOISTURE CONTROL changes the output moisture by
about 1%. Example: 100
°
is set, producing 16% corn out, however,
17% corn out is needed. Reduce the MOISTURE CONTROL tempera-
ture by 5
°
to 95
°.
This should change the moisture out to about 17%. To
make the corn come out dryer, raise the temperature on the MOISTURE
CONTROL.
2. There are 4 sensors that are averaged together for sensing MOIS-
TURE CONTROL temperature, 1 on each side of the dryer in the front,
and 1 on each side of the dryer in the back. They are located about
1
⁄
3
of the way up the grain column from the bottom, and in from the
side about 4 inches.
3. The small lights behind the temperatures on the MOISTURE CON-
TROL indicate the temperature of the grain at this sample point.
4. The 2 lights in the center are green, the lights to the right or to the left of
these are red.
5. When the grain temperature has the dryer cycling HIGH and LOW speed
on the green lights the moisture setting is being maintained correctly.
6. Set the METERING ROLL SPEED in relation to the small red lights
behind the temperatures on the MOISTURE CONTROL.
7. Red lights to the left indicate that the grain at the sample point is too
cool or wetter than desired. With this condition turn the LOW SPEED
left potentiometer to a lower number. This will slow down the metering
rolls and dry the grain longer, warming it up.
8. Red lights to the right indicate that the grain at the sample point is too
hot or dryer than desired. With this condition turn the HIGH SPEED
right potentiometer to a higher number. This will speed up the metering
rolls and remove the grain quicker, cooling it down.
9. If the MOISTURE CONTROL switches to LOW and only stays on low
for a minute or two and switches back to HIGH, speed up the LOW
SPEED left potentiometer. It is set too slow.
10. If the MOISTURE CONTROL switches to HIGH and only stays on high
for a minute or two and switches back to LOW, slow down the HIGH
SPEED right potentiometer. It is set too fast.
11. The MOISTURE CONTROL should stay on HIGH about 50% of the
time and on LOW about 50%, give or take 25%. There is a broad range
that will work. It should be switching low to high and back to maintain
the desired moisture. A control that does not switch, will not maintain
an evenly dried grain moisture, when the incoming wet grain moisture
is varying.
12. When adjusting the metering roll speeds it is better not to change the
speed more than 20 points at a time.
How do I set my moisture
control? See step number one
in the Adjusting The Moisture
Control section.