Great Plains 3PYP Operator Manual - Manual (Page 67)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 63
2014-09-09 Table of Contents Index 401-312M
Row Unit Shut-Off
Skip-row operations, such as planting from every other
row when switching from 30 inch twin-row to 30 inch
single-row, requires shutting down unused rows.
Refer to Figure 67
Shutting off seeding at a row involves 4 to 7 steps:
1. Identify the rows to shut off.
2. Disengage row unit drive coupler.
3. Close seed flow to row at Y-tube (if present).
4. Lock up row unit to reduce wear (optional).
5. Reset marker extension (if used).
6. Reset monitor active row pattern and row spacing to
avoid nuisance alarms (always done).
7. Shut off fertilizer drop lines (Option, see Seed and
Fertilizer Rate manual 401-312B for details).
8. Identify Rows to Shut Off
On twin-row planters, openers are installed with short
and long opener mounts. If locking up unused rows of a
twin-row planter, shut off the rear (long mount) rows.
On single-row planters with mid-length mounts, any rows
may be locked up.
9. Close Y-Tubes
Refer to Figure 68
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.
Figure 67
Row Unit Drive Coupler
Engaged (Left) and
Disengaged (right)
26171
Figure 68
Y-Tube Open and Closed
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