Observation 1: Musty or spoiled grain odor.


Reasen : Heating, moisture accumulation in one spot

Solution : Run the fan. Smell the exhaust while in the of the exhaust fan. Run the fan to cool any damage is severe, remove the grain.


Observation 2: Hard layer or core below grain if caked or surface. if airflow is spoiled grain.


Reasen : High moisture or spoiled, caked grain mass.

Solution : Run the aeration or drying fan. Check to see compacted mass blocks airflow. Cool and dry adequate, otherwise unload to remove all .


Observation 3: Warm grain below the top surface.


Reasen : Moisture content too high.

Solution : Run the fan regardless of weather conditions air temperature equals the desired grain emperature .


Observation 4: Surface grain wet or slimy. Perhaps temperatures equal grain sticking or frozen together.


Reasen : Early signs of moisture migration, often noticeable only 1-2 weeks after binning.

Solution : Run aeration fan. Cool grain until exhaust desired grain temperature or outside air temperatures.


Observation 5: Under-roof condensation dripping  outdoor air onto surface.


Reasen : Warm grain in cold weather, severe convection circulation and moisture migration.

Solution : Aerate until exhaust air temperature equals temperature at beginning of aeration cycle.



Observation 6: Wet or spoiled spots on grain surface at night.surface outside center point.


Reasen :Condensate drip from bolt end or under roof fixture that funnels condensate flow;

Solution : Check grain for heating. Check roof under Check for caulking around roof inlets and possible roof leak.



Observation 7: Cooling time required much longer grain and exhaust air than usual.


Reasen : Increased fines in grain resisting and reducing airflow; increased fines can cause airflow resistance to increase as much as 2-4 times over that of clean grain.

Solution : Run the fan longer time. Operate fan until temperature readings indicate grain is at regardless of the fan time required.