Great Plains 3PYP Operator Manual - Manual (Page 84)

401-312M Table of Contents Index 2014-09-09
80 3PYP Table of Contents Index Great Plains Manufacturing, Inc.
Troubleshooting
General Troubleshooting
Problem Cause Solution
Planting too
much Incorrect seed rate. Check seed rate information in the seed monitor manual.
Actual field size is different. Verify field size.
Excessive overlap.
Irregular shaped field. Adjust marker, page 54.
Incorrect tire size or air pressure. Correct tire size and air pressure, page 125.
Improper sprocket. Check sprockets
Improper gap on speed sensor. Check speed sensor on planter for
1 ⁄
16
inch to
1 ⁄
8
inch gap
from wheel. Improper gap can cause erratic speed signal
causing monitor to falsely report improper planting rate.
Monitor may also falsely report a low rate on soybeans by
as much as 5 percent due to difficulty in counting all of the
seeds.
Meter wheel or finger pickup has more
cells than indicated on seed rate chart. Charts are based on either 6 finger or 12 finger meters or
various wheel counts.
Planting too
little Incorrect seed rate. Check seed rate information.
Excessive field speed. Reduce field speed.
Seed size and weight may vary. Adjust seed rate handle.
Incorrect tire size or air pressure. Correct tire size and air pressure, page 125.
Actual field size is different. Verify field size.
Excessive gaps between planter
passes. Adjust marker, page 54.
Plugged row-unit seed tube. Lift planter, expose bottom of seed tube and clean out.
Thrown or worn drive chains Check drive chains.
Worn sprockets and/or chain idlers. Replace sprockets and/or chain idlers.
Improper sprocket. Check sprockets
Improper gap on speed sensor. Check speed sensor on planter for
1 ⁄
16
inch to
1 ⁄
8
inch gap
from wheel. Improper gap can cause erratic speed signal
causing monitor to falsely report improper planting rate.
Monitor may also falsely report a low rate on soybeans by
as much as 5 percent due to difficulty in counting all of the
seeds.
Meter wheel or finger pickup has fewer
cells than indicated on seed rate chart. Charts are based on either 6 finger or 12 finger meters or
various wheel counts.