Airbox troubleshooting – Great Plains YP4025F-1670 Operator Manual User Manual
Page 98
94
YP4010HD/YP4025/F
Great Plains Manufacturing, Inc.
401-571M
2014-09-08
Airbox Troubleshooting
Speed
Reading
Doesn’t
Match
Tractor
Monitor speed reading will only match
tractor with planter lowered.
If speeds don’t agree during planting (with planter lowered),
re-calibrate radar speed sensor with planter lowered.
Problem
Cause
Solution
Problem
Cause
Fix
Single row doesn’t fill or keep up
with other rows.
Y tube is bent/angled off feed pipe. Loosen and rotate pipe so the bend is
straight down and Y-tube is not pointing to
front or rear of air pipe.
Excess fan speed.
Reduce fan speed.
Both rows on one meter outlet
low or not keeping up with other
rows.
Note: This is more likely to occur
on end outlets.
Blockage in air slot in top of airbox. Clear by using a long slim tool and taking
hose off hose outlet or clean-out door.
Note: May be necessary to take top off
airbox to clear debris from slot, or
use side access doors.
Bad hose routing between delivery
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, butterfly valve.
Out of seed.
Add seed.
Single or multiple hoses
plugging just ahead of airbox.
Fan speed too high/too low.
Check/adjust fan speed, butterfly valve.
Possible air leak.
Check for air leak downstream between
box and top of meter.
All rows fail.
Lack of seed.
Add seed.
Fan speed too high.
Adjust fan speed or butterfly valve.
Extremely high populations may require
slightly reduced field speed.
1, 2, 3, or more outlets fail.
Note: Outlets can be
side-by-side or random.
Plugging may also move
from one outlet to another.
Foreign matter in seed chamber in
bottom of airbox.
Clean out seed chamber.
Little or no seed to many rows,
with heavily treated seed.
Seed treatment sticky.
Note: Do not use liquid seed treatments.
Add talc to seed to dry out seed
treatment.
Treatment mixed unevenly and
plugging outlets.
Clean out seed. Re-mix seed and
treatment.