Great Plains YP1625A Operator Manual - Manual (Page 82)

78 YP1125A & YP1625A Table of Contents Index Great Plains Manufacturing, Inc.
401-625M Table of Contents Index 2013-08-13
Seed Pool Troubleshooting
29743
Figure 106
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 79).
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 79).
6. Resume planting.
1. If shutter was at
suggested
opening, increase
one notch.
2. Check seed pool
for foreign matter.
3. Resume planting.
1
1
1