Great Plains
| 401-647M | 2019-06-11
Table of Contents
Index
92
3PYPA
Table of Contents
Index
Troubleshooting
Population Troubleshooting Charts
Problem
Cause
Solution
Overall Low
Population
Incorrect seed rate
Check seed rate charts
Empty pockets on disk (skips) due to insufficient
air pressure.
Methodically increase the controlled air to the meter. See
“
Fan and Adjustment
” on page 65.
Empty pockets on disk (skips) due to sticky seed
treatments not allowing seed to rapidly fill the
pockets.
Increase seed lubricant.
Empty pockets on disk (skips) due to rough field
conditions causing seeds to fall from the disks.
Decrease field speed or increase the air pressure in the
meter.
Empty pockets on disk (skips) due to seed pool
too low, and seeds are not filling every pocket on
the disk.
Open shutter one notch.
Empty pockets on disk (skips) due to disk speed
too high, and pockets are not filling.
Decrease field speed or change to a higher cell count disc.
Empty pockets on disk (skips) due to singulation
(4 tufted) brush too aggressive.
Check for matted, stuck together fibers. Wash, scrape clean,
or replace as needed.
Empty pockets on disk (skips) due to seed too big
for pocket.
Select the correct disk for the seed size.
Seeds are not falling from disk, and get carried
past drop zone. Static electricity can cause small,
lightweight seeds to cling to the pocket and not
fall out.
The graphite component of Ezee Glide Plus addresses this
issue. Increase the amount of Easy Glide Plus and/or more
thoroughly mix the lubricant into the seed.
Air pressure too low, false information driving the
DICKEY-john
®
software.
Compare the air pressure reported on the monitor console to
the mechanical gage. If they do not match:
•
Inspect the
1
/
4
inch sample lines from the row units
up to the sensor chamber for leaks.
•
Make sure all non-planting rows have blank disks.
•
Re-zero the air pressure with the fan off.
Low fan speed: meter starvation due to meter
pressurization, leaving insufficient air for seed
delivery
Increase fan speed.
Leaking meters in split row: meter starvation due
to meter pressurization leaving insufficient air for
seed delivery
Install blank disks and close shutters on unused rows.
Excess field speed
Plant within speed ranges recommended in seed rate charts.
Incorrect speed sensor constant.
Perform speed radar calibration per DICKEY-john
®
monitor
manual.
Speed sensor angle.
With planter lowered, check radar speed sensor angle per
DICKEY-john
®
recommendations.
Pass gaps too large
Check marker extension (page 170).
For GPS, check planter size programmed.
Actual field size is different
Population may be correct, and calculations are not.
Low
Population,
One Section
Clutch slipping, due to contaminants in clutch, or
wear
Lock-up clutch (page 49) until it can be overhauled or
replaced
Skipping chain from drive to section
Check chain slack.
Replace worn chain.
