Great Plains 1625AHL Operator Manual - Manual (Page 96)

92 1625AH Table of Contents Index Great Plains Manufacturing, Inc.
411-020M Table of Contents Index 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.
Population Too Low
Problem Cause Solution