2019-06-12
401-705M
YP3025A
Troubleshooting
92
Mismatch
Between
Reported and
Furrow
Population
Small seeds (example milo) are not reliably
sensed in the seed tube
Run with rain covers in place to minimize ambient light
intrusion. Use the population adjustment factor in the Dickey
John monitor system to compensate for missed seeds. For
example, change the DICKEY-john® Population Adjustment
values from 100% to 130% or 140% as needed. Remember to
set this back to 100% for large seeds.
Seed tube sensor is not counting all seeds
Clean the seed tube of graphite and dust buildup with long
narrow seed tube brush. Replace sensors that malfunction.
Seeds / revolution value in the DICKEY-john®
setup does not match the disk cell count.
Correct the value in a setup screen or install the correct cell
count disc.
Excessive
Seed Cracking
Incorrect seed pocket size
Use correct disk for seed.
Damaged, old or dried-out seed
Use new seed.
Unclean seed
Use clean seed.
Skips and
Bare Spots
After Turns
Fan was turned off at turns
Leave fan running. Meter Pressurization must be maintained
during turns, or seed will fall out of disk pockets.
Insufficient hydraulic flow to keep fan running
at speed required to maintain meter
pressurization
Check tractor capability against requirements (page 145).
If sufficient:
•
Fold markers before engaging lift.
•
Use a less aggressive lift rate.
•
Monitor fan rpm during end-of-pass operations.
Unable to
adjust air
pressure low
enough.
Lower limit reached in DICKEY-john®
software.
At User Level 2, reduce the controlled air lower limit in the
software.
Fan speed too high, vane rotated to
maximum.
Reduce the fan speed.
Seed too
shallow or
scattered on
ground from a
single row
Bottom of seed tube damaged.
Replace seed tube. Avoid setting planter straight down. Use
forward motion when lowering.
Row not penetrating in tire tracks.
Increase down force on parallel arm springs.
Opener depth too shallow.
Change side depth wheel setting.
Twin Rows
were timed but
became out of
time.
Timing will change when a population change
has been made.
Re-time meters from the population based timing chart.
Chain has jumped.
Check sprockets and chain for excessive wear or rusty stuck
links.
System is
unable to
automatically
control air
meter
pressure.
Signal from air pressure sensor lost. (failed
sensor or wiring)
Air pressure may be controlled manually, consult
DICKEY-john® Planter/Drill Control manual, User Level 2/3.
Population Related
Problem
Cause
Solution
