Great Plains
| 401-647M | 2019-06-11
Table of Contents
Index
90
3PYPA
Table of Contents
Index
Troubleshooting
Seed Pool Troubleshooting
Figure 123
Rear Cross-Section of Air-Pro Meter in Normal and Row-Failed Conditions
29743
Normal:
Filling
Normal:
Filled
Delivery Blockage or
Back-flow Starvation
Bridging:
Screen
Bridging:
Shutter
Seed pool at shutter
prevents back-flow of
meter pressurization
air, allowing seed to
flow from delivery
system, filling inlet to
top of air release
screen.
Once inlet is filled to
top of air release
screen, air flow from
the delivery system is
blocked. No further
seed arrives until
planting reduces the
backlog at the inlet.
No seed arriving from
manifold. Air
back-flow is
occurring. Causes may
include:
•
low fan speed
•
seed hose
blockage
•
no seed available
•
Y-tube closed
•
meter never
primed
Oversize matter in
seed has caused a
bridge at the top of the
inlet. Air back-flow is
occurring.
When the bridge is
released, the seed pool
will be insufficient to
prevent back-flow.
A bridge at the shutter
is blocking flow.
Causes may include:
•
oversize seed
•
shutter setting too
low
•
oversize matter in
seed
Actions:
Actions:
Actions:
Actions:
Actions:
No action required.
Continue Planting.
No action required.
Continue Planting.
1. Correct cause of
blockage.
2. Perform a one-row
seed pool recovery
(page 91).
3. Resume planting.
1. Close shutter.
2. Disconnect hose at
meter.
3. Tap on screen
cone and inspect.
4. Check seed pool
for foreign matter.
5. Perform a one-row
seed pool recovery
(page 91).
6. Resume planting.
1. If shutter was at
suggested
opening, increase
one notch.
2. Check seed pool
for foreign matter.
3. Resume planting.
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