Great Plains 1625AHL Operator Manual User Manual
Page 98
94
1625AH
Great Plains Manufacturing, Inc.
411-020M
2014-04-21
Overall Low
Population,
cont.
Pass gaps too large
Check marker extension (page 161).
For GPS, check planter size programmed.
Actual field size is different
Population may be correct, and calculations are not.
Seed monitor reporting excess area
Readings can vary with conditions (wheel slippage, and
effective rolling radius in soft soils) and planting
patterns.
Low
Population,
Single Row
Shutter opening too narrow - starving
meter of seed (low seed pool)
Adjust shutter to higher setting.
Meter starvation due to bridging at shutter Re-adjust for shutter bridging (page 80).
If seed is treated, increase seed lubricant.
Meter starvation due to blockage above
inlet
Clear blockage (page 80).
Meter starvation due to bridging above
inlet, caused by high levels of seed
treatment
Clear bridge (page 80). Increase seed lubricant.
Incorrect seed disk on one row
Install correct seed disk.
Chain skipping at row unit.
Check chain, idler and sprocket condition.
Skips due to low meter pressurization at
one or several rows
Check shutter setting. Check for excess wear on seed
drop brush. Check for loose or leaking pressure hose.
Skips due to skipping chain
Check for worn chain, worn idlers, low chain slack
(page 117) and failed meter bearing.
Skips due to debris in disk pockets
Remove rain covers. Inspect and clean out disks.
Row has blank disk installed
Replace with seeding disk.
Seed sensor obscured
Clean out seed tube (see page 104).
Seed tube plugged
Raise planter, expose bottom of seed tube and clean
out.
Low or
Erratic Seed
Flow
Seed meter plugged, due to operation with
fan shut off, or manifold pressure too low.
Close shutters. Clean-out meters. Set fan for correct
manifold pressure. Resume planting.
High
Population,
One Wing
Ground Drive only: LH and RH Range
setup not matched.
Make sure LH and RH Range settings are identical, and
that sprockets are on proper DRIVING/DRIVEN shafts.
Ground Drive only: LH and RH
Transmission setup not matched.
Make sure LH and RH Transmission settings are
identical, and that sprockets are on proper
DRIVING/DRIVEN shafts.
Seed Population Too High
Problem
Cause
Solution