Great Plains YP3025A Operator Manual User Manual

Page 93

Great Plains Manufacturing, Inc.

Troubleshooting

02/16/2012

401-705M

Skips and
Bare Spots
After Turns

Fan was turned off at turns

Leave fan running. Meter Pressurization must be maintained
during turns, or seed will fall out of disk pockets.

Insufficient hydraulic flow to keep
fan running at speed required to
maintain meter pressurization

Check tractor capability against requirements (page 138).
If sufficient:
• Fold markers before engaging lift.

• Use a less aggressive lift rate.

• Monitor fan rpm during end-of-pass operations.

Unable to
adjust air
pressure low
enough.

Lower limit reached in DICKEY-
john® software.

At User Level 2, reduce the controlled air lower limit in the
software.

Fan speed too high, vane rotated
to maximum.

Reduce the fan speed.

Seed too
shallow or
scattered on
ground from a
single row

Bottom of seed tube damaged.

Replace seed tube. Avoid setting planter straight down. Use
forward motion when lowering.

Row not penetrating in tire tracks. Increase down force on parallel arm springs.

Opener depth too shallow.

Change side depth wheel setting.

Twin Rows
were timed
but became
out of time.

Timing will change when a popu-
lation change has been made.

Re-time meters from the population based timing chart.

Chain has jumped.

Check sprockets and chain for excessive wear or rusty stuck
links.

System is
unable to
automatically
control air
meter
pressure.

Signal from air pressure sensor
lost. (failed sensor or wiring)

Air pressure may be controlled manually, consult DICKEY-
john® Planter/Drill Control manual, User Level 2/3.

Population Related

Problem

Cause

Solution