YP3025A
Troubleshooting
89
2019-06-12
401-705M
Overall Low
Population
(cont.)
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. See page 175.
Speed sensor angle.
With planter lowered, check radar speed sensor angle per
DICKEY-john® recommendations.
Pass gaps too large
Check marker extension (page 174).
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 chains
Population Too Low
Problem
Cause
Solution
