Great Plains YP825A3P Operator Manual User Manual

Page 73

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Great Plains Manufacturing, Inc.

Table of Contents

Index

Troubleshooting

69

2013-05-28

Table of Contents

Index

401-652M

Overall High
Population,
cont.

Air pressure too high, but gauge is within
range or reading low.

Check:
• Inspect the

1

4

inch sample lines from the row units up

to the sensor chamber for leaks (page 66).

• Make sure all non-planting rows have blank disks

(page 59).

• Check that rubber pressure relief plug is seated in

gauge (page 66).

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 79).

(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 114).
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

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