Maintaining grain quality, Startup & operation for all portable dryers – Grain Systems PNEG-573 User Manual
Page 47
47
To properly maintain the quality of
stored grain, it is necessary to keep
the grain dry, cool and insect free.
Any of these problems can contrib-
ute to spoilage. Wet, warm grain pro-
motes insect growth as well as grain
spoilage. Cool dry grain can keep
for long periods of time if properly
maintained.
It is recommended that the grain
be kept cool (Avoid freezing. It can
reduce grain quality). Grain should be
cooled through the fall and winter,
warmed in the spring and summer.
Average grain temperature
should be above 35
°
F in the winter
and below 65
°
F in the summer. Al-
ways try to keep the grain within
10
°
F-15
°
F of the average monthly
outside temperature. This means
grain may need to be aerated on
warm days during the winter to stay
above 35
°
F when freezing tempera-
tures are predominate. During the
summer, it may be necessary to
aerate the grain on cool nights, so the
65
°
F temperature is not exceeded
during the hot days of summer.
Conditions and requirements
may vary from area to area. We sug-
gest that you contact your local ag-
riculture extension office or state
agriculture university for more exact
guidelines in your area.
If the grain is to be stored for
more than one year, it has to be re-
cooled the following fall and winter,
repeating the process as long as the
grain is in storage. Frequent and
regular inspection (at least weekly
during fall and spring) is the best
prevention against grain spoilage.
MAINTAINING GRAIN QUALITY
MAINTAINING GRAIN QUALITY
MAINTAINING GRAIN QUALITY
MAINTAINING GRAIN QUALITY
MAINTAINING GRAIN QUALITY
EQUILIBRIUM MOISTURE CHART
EQUILIBRIUM MOISTURE CHART
EQUILIBRIUM MOISTURE CHART
EQUILIBRIUM MOISTURE CHART
EQUILIBRIUM MOISTURE CHART
Air Temperature
Air Temperature
Air Temperature
Air Temperature
Air Temperature
Relative Humidity - Percent
Relative Humidity - Percent
Relative Humidity - Percent
Relative Humidity - Percent
Relative Humidity - Percent
20
°
F
30
°
F
40
°
F
50
°
F
60
°
F
70
°
F
80
°
F
35
35
35
35
35
11.2
10.8
10.5
10.1
9.7
9.0
8.3
40
40
40
40
40
11.7
11.3
11.0
10.6
10.2
9.7
9.1
45
45
45
45
45
12.7
12.2
11.7
11.3
10.9
10.4
9.8
50
50
50
50
50
13.7
13.1
12.5
12.0
11.6
11.1
10.5
55
55
55
55
55
14.5
13.9
13.3
12.7
12.1
11.5
10.8
60
60
60
60
60
15.1
14.6
14.0
13.3
12.7
12.0
11.2
65
65
65
65
65
16.2
15.5
14.8
14.1
13.4
12.8
12.1
70
70
70
70
70
17.1
16.4
15.5
14.8
14.2
13.5
13.0
75
75
75
75
75
18.0
17.4
16.6
15.8
15.0
14.5
13.9
80
80
80
80
80
19.6
18.7
17.8
16.9
16.0
15.4
14.8
85
85
85
85
85
21.2
20.2
19.4
18.6
17.8
16.8
15.8
90
90
90
90
90
23.5
22.5
21.5
20.5
19.5
18.5
17.4
95
95
95
95
95
25.8
25.0
24.2
23.4
22.6
21.3
20.0
100
100
100
100
100
29.1
28.3
27.5
26.7
25.9
24.5
22.8
Safe moisture for normal winter stor-
age of shelled corn is about 15%.
Grain to be stored through the sum-
mer or long term, needs to be 1 to 3
points dryer.
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