YP625PD
Troubleshooting
67
06/12/2019
401-754M
Metadata: End of “Population Too High“
Overall High
Population,
cont.
Air pressure too high, but gauge is within
range or reading low.
Check:
•
Inspect the 6.4 cm sample lines from the row units
up to the sensor chamber for leaks (page 64).
•
Make sure all non-planting rows have blank disks
(page 57).
•
Check that rubber pressure relief plug is seated in
gauge (page 64).
False alarms or actual seed rate errors due to
monitor setup with incorrect row count,
spacing or active rows
When troubleshooting population issues, always first rule out
seed monitor setup. Review planter configuration and monitor
setup.
Incorrect cell count
Replace seed disks with correct disks, or reset rate for current
disks (if within range).
Incorrect speed sensor constant.
Perform speed calibration per seed monitor manual.
Incorrect magnetic speed sensor gap.
Check and adjust (page 78).
(Option) Incorrect radar speed sensor angle.
With planter lowered, check radar speed sensor angle per
DICKEY-john
®
recommendations.
Doubles due to incorrect disk for crop or seed
size
Use recommended disk for crop and seed size.
Sticky seeds: excess seed treatment
Increase seed lubricant.
Incorrect speed sensor constant
Perform speed calibration per DICKEY-john
®
monitor manual.
Overlapping passes
Check marker extension (page 110).
For GPS, check planter size programmed.
Actual field size is different
Population may be correct, and calculations are not.
Seed monitor under-reporting area
Readings can vary with conditions (wheel slippage, and
effective rolling radius in soft soils) and planting patterns.
High
Population,
Single Row
Excess meter pressurization causing doubles Check shutter.
Worn seed-drop brush and/or strip brushes
allowing excess seed to pass
Replace worn brushes.
Worn meter bearing causing seed disk
wobble and doubles
Replace meter bearing.
Incorrect seed disk with higher cell count.
Install correct disk.
Population Too High
Problem
Cause
Solution
