Great Plains 3PYPA Operator Manual User Manual
Page 97
Great Plains Manufacturing, Inc.
Troubleshooting
93
03/20/2012
401-647M
Metadata: End of “Population Related“
Metadata: End of “Population Troubleshooting Charts“
Null4.aac:
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
Seed Delivery Troubleshooting
Problem
Cause
Solution
Single row doesn’t fill or keep up with
other rows.
Y tube is bent/angled off feed
pipe.
Loosen pipe and spin so the bend is
straight down and Y-tube is not pointing
to front or rear of air pipe.
Drop tube to meter is too long,
causing seed to pool and plug
hose or Y-tube.
Shorten hose (with planter raised, but
row units lowered, to ensure hose is
not too short).
Air release vent plugged
Remove the seed delivery hose and
clamp from the two halves of the
screen cone and remove the air
release screen for inspection. Wash or
blow out the screen as needed.
Both rows on one meter outlet low or
not keeping up with other rows.
Blockage in air slot in top of air-
box.
Clear by using a long skinny tool and
taking hose off through hose outlet.
It may be necessary to take top off air-
box or use side access doors to clear
junk from slot.
Bad hose routing between deliv-
ery hose and airbox on wing.
Correct hose routing.
Multiple rows fail for lack of seed.
Fan speed too high/too low.
Check/adjust fan speed.
Out of seed.
Add seed.
Single or multiple hoses plugging just
ahead of airbox.
Fan speed too high/too low.
Check/adjust fan speed.
Possible air leak.
Check for air leak downstream
between box and top of meter.
All rows fail.
Lack of seed.
Fan speed too high. Adjust fan speed.
Extremely high populations may
require slightly reduced field speed.