GREAT PLAINS Yield-Pro 3PYPA, Руководство оператора

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3PYPA Table of Contents Index Adjustments
Great Plains | 401-647M | 2019-06-11 Table of Contents Index 83
2. Close Seed Shutter
Refer to Figure 111 on page 82
Lift the handle away from the plate. Move it to the top
position, and release the handle into the notch.
Closing the shutter
prevents meter pressurization air
from leaking into the bulk seed air system, resulting in
lower pressures in adjacent rows, with risk of skips.
The shutter also stops seed flow from a row as soon as
the meter is empty. Bulk seed flow to the row falls to nil
as soon as the seed backs up to the air release vent at
the top of the meter. If the row is served by a Y-tube, the
Y-tube also needs to be shut off for the row (step 4).
3. Install Blank Disk
Refer to Figure 112
Clean out meter. See “ Meter Clean-Out ” on page 103.
Remove seed disk and install blank disk. See “ Air-Pro
Meter Disk Installation ” on page 81.
Blank disks (part number 817-841C) are essential in row
shut-off, both to maintain consistent meter back-pressure
to meter pressurization and to prevent wear on a seed
disk.
Blank disks are engineered to simulate a seed disk with
seed in all pockets. Blanks are particularly important on
the rows with sensor lines to the pressure chamber.
4. Close Y-Tubes
Refer to Figure 113
If any shut-off rows are served by a Y-tube, close the
valve for the branch to that row. Rotate the valve cap
until the indicator/handle is perpendicular to the tubes.
Closing the Y-tube prevents seed from entering an
unused hose, reducing waste and simplifying clean-out.
5. Lock-Up Row
Alternate twin-row units (the rear units) can be pinned in
the up position to accommodate single-row spacing.
Refer to Figure 114
The lock-up pins for each front row unit are located in
a storage hole in the row unit mount. To lock up a unit,
the unit must be raised, and the pin moved to the lock-up
hole
in the row unit shank.
Crushing and Sharp Object Hazards:
Do not attempt to lift a row unit by hand. The weight of the
unit, plus the force of the springs (even at minimum) is too
great (plus, a free hand is needed for pin insertion). Even with
multiple people lifting, hand-lifting is unsafe - there are
numerous sharp edges, and the row unit snaps down violently
if a grip is lost.
Irregular Seeding Risk:
Always use a blank disk in a shut-off row. Operating with no
disk, or with a seed disk but no seed, destabilizes the regulated
airflow, particularly at rows with pressure sensor lines.
Figure 112
Shutter Closed, Blank Disk Installed
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Figure 113
Y-Tube Open and Closed
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Figure 114
25AP Row Unit Lock-Up Pin
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