DMC UniDriv, Owner'S Manual

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Management and Maintenance UniDriv
Section 17 UniDriv Management And Maintenance (continued)
The symptoms of bin-wall moisture caused by inadequate cooling of the grain are that the
moisture will occur from approximately one ring below the top surface of the grain to
approximately one ring above the drying floor. Moisture will not occur in the top ring or the
bottom ring of the grain mass. The UniDriv, having multiple augers which stir the entire radius
of the bin at one time, maintains an auger at the bin wall at all times, providing an even flow of
air across the bin, which insures against the occurrence of bin wall moisture in a properly
managed drying cycle.
Drying Wet Grain – 30 Percent Or More
Dry one ring of grain with air and heat only, NO STIRRING. Then follow normal filling and
drying procedures.
Batch And Layer Drying
The charts published in Specialized Products literature are based upon batch drying techniques
and show a daily fill, daily drying rate. It should be noted that in batch drying with batches of
from 10 to 12 foot depths, high temperatures could be used to obtain fast drying rates. However,
in layer drying as additional layers of grain are added the temperature should be reduced and
more time allowed for the drying process.
If excessive condensation occurs on the bin roof and sidewalls during the drying process, too
much heat is probably being applied. Thus, reducing the heat and extending the drying time
will increase the drying efficiency in a layer-drying situation.
Maintain The Unit
Prior to operating the unit each year make a thorough inspection of bearings, belts, idler
pulleys, motors, outer drive train and electrical system to insure that the unit is in good running
condition. In particular, be sure to check the roll pin, which holds the outer drive assembly on
the horizontal beam. Preventive maintenance done before the season can prevent costly time
loss during harvest.
During the season make periodic inspections of belts, bearings, and idler pulleys and check
for proper belt alignment. Grease zerks once a week. If belts show signs of wear such as
fraying or cracking, replace them to prevent a breakdown while the unit is unattended. It is
good practice to keep a few extra belts and bearings on hand in case of a breakdown during
the season.
IMPORTANT:
THE UNIDRIV SHOULD NEVER BE COVERED OVER WITH GRAIN UNDER ANY CIR-
CUMSTANCE – even for storage only, as it may pull in the bin walls when you empty the grain.
With proper management, your UniDriv can give you years of dependable drying service.
Utilize the information given in this management section of the instructions and you can minimize
the problems and maximize the efficiency of your overall drying system.