Grain Systems PNEG-573 - Manual (Page 43)

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DRYERATION PROCESS DRYERATION PROCESS DRYERATION PROCESS DRYERATION PROCESS DRYERATION PROCESS
If the startup steps on the previous
pages are followed the MOISTURE
CONTROL settings adjust accord-
ingly to get 130
° corn out back of
dryer. On rare occasions hard dry-
ing, or immature corn may require
higher temperatures. Always use
MOISTURE TESTER to confirm
temperature reading. Use a large
sample (2.5 gallon) and an accurate
THERMOMETER (A. W. Sperry
model DT-5A digital preferred) to de-
termine actual temperature. Smaller
containers bleed off temperature be-
fore the THERMOMETER reaches
true temperature.
Bins should have:
•A full aeration floor aeration floor aeration floor aeration floor aeration floor
•1/3 to 1/2 CFM of air when
the bin is full
•A grain spreader
grain spreader grain spreader grain spreader grain spreader
Normally let 2 to 3 feet of warm
grain enter bin before turning on
fans
fans fans fans fans to give heat a head start.
Small dryers or very large bins
may take too long. Do not start fans fans fans fans fans
longer than 2-4 hours after starting
dryer. On bins with high air flow
(above 1/2 CFM), fans
fans fans fans fans may need to
be cycled two hours on, two hours
off throughout the day to maintain a
thick enough hot grain layer to get
proper moisture loss in the bin.
Large dryers (1000 bu/hr and larger)
may require at least 1/2 CFM and
immediate starting of fans
fans fans fans fans. Follow
these procedures each time you
start putting grain in the bin. Con-
tinue aeration until grain is com-
pletely cooled.
Fill each bin completely. Do not
alternate bins. Alternating would
cause different layers the moisture
in the bin. The first morning after
starting, take a cooled sample from
bin and test it. Grain will be within
.2% to .5% of final moisture at this
time. Check again 24 and 48 hours
later, always use this test as the fi-
nal decision maker as to what mois
ture setting to use.
If test is too wet turn moisture
control up (higher temperature). If
test is too dry turn MOISTURE CON-
TROL down (lower temperature).
Each small mark on the face of the
MOISTURE CONTROL dial is ap-
proximately ONE POINT of mois-
ture. If you want 15% and your test
mark was 14% turn MOISTURE
CONTROL down one small mark,
and retest the next morning.
At the bottom of the bin the air-
flow is rather high. As the bin fills
moisture will be taken out. This is
somewhat offset by the grain at the
bottom getting more hours of aera-
tion. Overdrying is common the first
year, and settings can be altered the
second year.
It is very important to write It is very important to write It is very important to write It is very important to write It is very important to write
down every setting for comparison down every setting for comparison down every setting for comparison down every setting for comparison down every setting for comparison
year to year, and for a preset start-
year to year, and for a preset start- year to year, and for a preset start- year to year, and for a preset start- year to year, and for a preset start-
ing point of the dryer each year.
ing point of the dryer each year. ing point of the dryer each year. ing point of the dryer each year. ing point of the dryer each year.
Starting a dryer full of wet grain. Starting a dryer full of wet grain. Starting a dryer full of wet grain. Starting a dryer full of wet grain. Starting a dryer full of wet grain.
STARTUP & OPERATION FOR ALL PORTABLE DRYERS STARTUP & OPERATION FOR ALL PORTABLE DRYERS STARTUP & OPERATION FOR ALL PORTABLE DRYERS STARTUP & OPERATION FOR ALL PORTABLE DRYERS STARTUP & OPERATION FOR ALL PORTABLE DRYERS