
Great Plains | 411-633M | 10/21/2021
74
PL5500 Planter
Troubleshooting
Seed Pool Troubleshooting
The following illustration shows rear cross sections of
the seed meter in normal and row-failed conditions.
Normal: Filling
Normal: Filled
Delivery Blockage or
Back-flow Starvation
Bridging: Screen
Bridging: Gate
Seed pool at the seed
inlet gate prevents
back-flow of meter
pressurization air,
allowing the seed to
flow from the delivery
system, filling the inlet
to the top of the air
release screen.
Once the inlet is filled
to the top of the air
release screen, the air
flow from the delivery
system is blocked. No
further seed arrives
until planting reduces
the backlog at the
inlet.
No seed is arriving
from the manifold. Air
back-flow (1) is
occurring. Causes
may include:
low fan speed
seed hose
blockage
no seed available
meter never
primed
Oversize matter in the
seed has caused a
bridge at the top of
the inlet. Air back-flow
(1) is occurring.
When the bridge is
released, the seed
pool will be insufficient
to prevent back-flow.
A bridge at the gate is
blocking flow. Causes
may include:
oversize seed
gate setting too
low
oversize matter in
the seed
Actions
Actions
Actions
Actions
Actions
No action required.
Continue planting.
No action required.
Continue planting.
1. Correct the cause
of the blockage.
2. Perform a one-
row seed pool
recovery.
3. Resume planting.
1. Close the seed
inlet gate.
2. Disconnect the
hose at the meter.
3. Tap on the air
release screen
and inspect.
4. Check the seed
pool for foreign
matter.
5. Perform a one-
row seed pool
recovery.
6. Resume planting.
1. If the seed inlet
gate is at the
suggested
opening, increase
one notch.
2. Check the seed
pool for foreign
matter.
3. Resume planting.
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