GREAT PLAINS PL5700, Operator'S Manual

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Great Plains | 411-681M | 04/08/2021 79
PL5700 Planter Table of Contents Index Troubleshooting
Seed Population Too High
Problem Cause Solution
Overall high
population.
Incorrect seed rate Check seed rate charts.
Incorrect ground drive transmission or
range sprockets used
Check transmission sprocket or range
sprocket selections and driving/driven
locations.
Two seeds per cell in the seed disk due to
excess meter pressurization
Decrease the controlled air to the meter.
See “ Fan Adjustment ” on page 34.
Two seeds per cell in the seed disk due to
cells too large for the seed
Select a disk with smaller cells.
Air meter pressure too high due to pressure
sensor not zeroed properly
Re-zero air pressure with fan off. Verify
displayed pressure reads 0.00.
Air pressure too high, but gauge is within
range or reading low
Compare the air pressure reported on the
console to the mechanical gauge. If they do
not match:

Inspect sample lines from row units up to
sensor chamber for leaks.

Re-zero air pressure with fan off.
False alarms or actual seed rate errors due
to console setup with incorrect row count,
spacing, or active rows
Review planter configuration and console
setup.
Incorrect disk cell count Replace seed disks with correct disks, or
reset rate for current disks, if within range.
Improper gap on speed sensor Check speed sensor (page 14). An
improper gap can cause erratic speed
signal causing the console to falsely report
an improper planting rate.
Incorrect speed sensor constant Perform speed calibration, see the console
manual.
Doubles due to incorrect disk for crop or
seed size
Use the recommended disk for crop and
seed size. See Material Rate manual for
seed charts.
Sticky seeds from excess seed treatment Increase seed lubricant. See “ Close lids
and latches. ” on page 39.
High population,
single row.
Excess meter pressurization causing
doubles
Check seed inlet gate. See “ Seed Inlet
Gate Adjustment ” on page 40.
Worn tufted brush allowing doubles Replace worn brush.
Worn seed-drop brush and/or strip brushes
allowing excess seed to pass
Replace worn brushes.
Incorrect seed disk with higher cell count Install correct disk. See Material Rate
manual for seed charts.