Population troubleshooting charts – Great Plains 2525A Operator Manual User Manual
Page 62
58
2025A/2525A
Great Plains Manufacturing, Inc.
118-999M
2013-06-04
Population Troubleshooting Charts
Population Too Low
Problem
Cause
Solution
Overall
Low
Population
Incorrect seed rate
Using Seed Rate Manual, check:
• seed disk selection,
• Range/Transmission sprocket setup, and
• tire size and inflation.
Empty pockets on disk (skips) due to insuffi-
cient air pressure.
Methodically increase the meter pressure.
See “Fan and Adjustment” on page 35.
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 singu-
lation (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 car-
ried 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, as confirmed by gauge. Increase fan speed or reduce butterfly valve setting.
Air pressure too low, but gauge reading is
within range or reading high.
• Inspect the
1
⁄
4
in sample lines from the row units up
to the sensor chamber for leaks (page 35).
• Make sure all non-planting rows have blank disks
and shutters are closed (page 50).
• Re-zero the gauge with the fan off (page 35).
• Check gauge vent line for kinks, pinches or plugging
(page 35).
Tire slippage due to wet conditions
Wait for drier conditions.
If a tire is seriously worn, replace both.
Tire slippage due to under-inflation
Inflate tires to specification (page 88).
Tire slippage due to incorrect gauge wheel
setup.
Check gauge wheel leveling prior to first use
(page 16). Remember to re-level gauge wheel when
switching between bedded and non-bedded planting.