Great Plains YP3025A Operator Manual - Manual (Page 79)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 75
02/16/2012 Table of Contents Index 401-705M
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 88
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 89 and Figure 90
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 seed monitor “Row Failure”
alarm, with a report of the row number. 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. Close the shutter completely for about 15 sec-
onds. This prevents meter pressurization air from oppos-
ing seed delivery air. The delivery air pressure usually
collapses the bridge. Re-open the shutter and see if
seed now fills the meter.
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.
Metadata: End of “Seed Inlet Shutter Adjustment”
Null4:
Figure 88
Milo: Seed Inlet Shutter at: 1
29602
1
8:00
1
Null4:
Figure 89
Soybeans: Seed Inlet Shutter at: 2
29604
1
8:30
1
Null4:
Foreign Object Risk:
After clearing a bridge, or a delivery blockage upstream, 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 90
Corn: Seed Inlet Shutter at: 3
29603
1
8:30