GREAT PLAINS Yield-Pro 3P3025AH, Operator'S Manual

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3P3025AH Table of Contents Index Maintenance
Great Plains | 411-332M | 2019-02-19 Table of Contents Index 93
Seed Disc Maintenance
Refer to Figure 113
When removing seed discs, inspect them for wear and
damage. If there is any seed dust or treatment build-up in
the cell pockets
, or along the raised wiper ridges ,
clean the discs and re-inspect.
Replace discs for conditions including:
•
Chips at circumference . These will leak air.
•
Chips at edges or in sculpted surfaces of cell
pockets
. These can leak air and/or adversely
affect singulation.
•
Cracks over 2 inch (5 cm) long in the working face
of the disc, or any cracks in support webs or to an
edge.
•
Warping - if any part of the disc does not press firmly
on the seed drop brushes (page 73) in operation,
replace the disc.
•
Wear - if a wiper ridge is worn away, replace the
disc. If the seed pockets are worn through, or the air
ports
have enlarged, replace the disc.
Cleaning and Storing Seed Discs
Use warm or hot water, mild soap, and a sponge or soft
brush to remove build-up.
If discs are washed, allow them to dry completely prior to
storage.
Retain original shipping cartons for disc storage.
Otherwise, store them on edge (and not leaning), or
stacked horizontally on a spindle, to eliminate any risk of
warps. Any seed residue on discs may attract pests.
Fully enclose dry discs to prevent rodent damage.
Speed Sensor Gap, Ground Drive
Refer to Figure 114
1. Raise planter (page 31). Rotate ground drive
wheel until a disc tooth is directly at the centerline
of the sensor .
2. Check that wheel teeth are on sensor centerline
side-to-side. As needed, loosen collars on either side
of disc and adjust.
3. Check gap between top of sensor and toothed
wheel for a dimension of:
1
/
16
inch (1.6 mm).
To adjust, loosen jam nut . Adjust base nut to set
gap. Tighten jam nut.
Possible Chemical Hazard:
Wear gloves when washing discs. Avoid spray. Do not wash
discs where food is prepared, or where cookware or
dinnerware is washed. Seed discs will have talc and graphite
residue, and may have residues of hazardous seed treatments.
Although the discs are dishwasher-safe, do not wash them in
an appliance also used for food preparation or food serving
items.
Figure 113
Disc Seed Cells and Wiper
29613
1
2
1
4
5
3
1 2
3
1
4
5
Figure 114
Speed Sensor Gap
38577
A
2 3
4
1
1
2
A
3 4