2019-03-19
411-198M
YP4025A-48TR20
Troubleshooting
96
Seed Pool Troubleshooting
.eps
100%
Figure 112
Rear Cross-Section of Air-Pro
®
Meter in Normal and Row-Failed Conditions
29743
Normal:2
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
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 97).
6. Resume planting.
1. If shutter was at
suggested
opening,
increase one
notch.
2. Check seed
pool for foreign
matter.
3. Resume
planting.
1