
Great Plains | 411-633M | 10/21/2021
76
PL5500 Planter
Troubleshooting
Seed Population Troubleshooting
Problem
Cause
Solution
Overall
population
alarms
False alarms or actual rate errors due
to seed monitoring system setup with
incorrect row count or spacing
Review planter configuration and seed monitoring system
setup. See
the console manual for instructions for your
seed monitoring system.
Incorrect 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 on planter for 1/16 to 1/8 inch (1.6 to
3.2 mm) gap from the wheel. An improper gap can cause
an erratic speed signal causing the console to falsely
report an improper planting rate.
Incorrect speed sensor constant
Perform
SPEED CALIBRATION
operation. See
the
console manual for instructions for your seed
monitoring system.
Seed run
-
out.If planting across
slopes, some rows will run out before
others
Re
-
distribute seed to favor rows that have run out, and
plan to refill shortly.
Mismatch
between
reported and
furrow
population
Small seeds, such as milo, are not
reliably sensed in the seed tube
Run with rain covers in place to minimize ambient light
intrusion. Use the population scaling factor in the seed
monitoring system to compensate for missed seeds.
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 seed
tube brush. Replace sensors that malfunction.
Seeds or revolution value in the
console setup does not match disk
cell count
Correct the value in a setup screen or install correct cell
count disk.
Low population
bands just after
turns.
Insufficient oil to the fan, meter
pressures low, seeds falling from
disks
Perform end-of-pass marker and lift operations separately.
If already performing separately, lift more gradually.
Excessive seed
cracking
Incorrect seed pocket size
Use correct disk for seed. Refer to Material Rate manual.
Damaged, old or dried
-
out seed
Use new seed.
Unclean seed
Use clean seed.
Seed too
shallow or
scattered on
ground from a
single row
Bottom of seed tube damaged
Replace seed tube. Avoid setting the planter straight down.
Use forward motion when lowering.
Row not penetrating in tire tracks
Increase down force on parallel arm springs (page 37).
Opener depth too shallow
Change side depth wheel setting (page 40).
Excess seed
remaining
Field size different
After ruling out population problems, re
-
check geography.
Excessive gaps between planter
passes
Adjust marker (
).
Incorrect speed calibration
Perform
SPEED CALIBRATION
operation. See
the
console manual for instructions for your seed
monitoring system.
Содержание PL5500
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