Great Plains 2525A Operator Manual - Manual (Page 51)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 47
2013-06-04 Table of Contents Index 118-999M
Optimal Seed Pool Slopes
The optimal seed slope is one that results in the most
consistent seeding, with minimal skips and doubles. The
column at right has photographs of pool slopes found to
be optimal for representative seeds.
If the suggested initial shutter settings do not seem to be
working for your seed, adjust the shutter to achieve spe-
cific reserve slope targets.
Refer to Figure 45
For medium size and smaller seeds that flow easily, the
slope runs from just above the 8:00 (o’clock) position on
the housing wall, forward and down to one or two seeds
deep at the base of the rear strip brush
.
Refer to Figure 46 and Figure 47
For medium size and larger, or heavily treated smaller
seeds that flow less easily, the slope runs from at or
slightly above the 8:30 (o’clock) position on the housing
wall, forward and down to 3-6 seeds deep at the base of
the rear strip brush
.
In general, the seeds at the base of the strip brush need
to be deep enough that no air escapes there, and so that
just enough seeds are present to begin populating cells.
Keep the top left/rear end of the pool below the 9:00
o’clock position (meter horizontal center-line).
Meter Re-Fill
Once planting is underway with the seed pools set, it is
infrequently possible for bridging at or above the inlet to
starve the meter of seed.
An empty meter causes a “Row Failure” alarm on the
optional seed monitor. Row numbers are counted from
the left wing (outside row is row 1).
Stop, and put the tractor in Park. Leave the fan running.
Locate the failed row, remove the rain cover, and verify
that the meter is empty. Note the shutter setting. Tempo-
rarily open the shutter one of two notches wider. if the
problem was inlet bridging, seed should flow into the
meter immediately.
If inlet bridging is not the problem, little or no seed flows
into the meter with the shutter open wider. In this case,
the problem is further upstream in the seed flow, and
may be bridging at the air release screen at the top of the
meter, or plugging in the seed box.
If no obvious foreign object was the cause of the bridg-
ing, the shutter setting may have been too small for the
seed. Verify that this and other operating rows were at
the correct initial shutter setting. If so, re-set the shutters
to the next higher opening.
Figure 45
Milo: Seed Inlet Shutter at: 1
29602
1
8:00
1
Figure 46
Soybeans: Seed Inlet Shutter at: 2
29604
1
8:30
1
Foreign Object Risk:
After clearing a bridge, or a delivery blockage above the
meter, check the seed pool at the meter for any debris that
might have been the original cause. Remove such debris from
the meter before planting. Don’t run the risk of an object
lodging in a seed pocket and causing on-going skips.
Figure 47
Corn: Seed Inlet Shutter at: 3
29603
1
8:30