Great Plains YP1625A Operator Manual - Manual (Page 83)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 79
2013-08-13 Table of Contents Index 401-625M
Seed Pool Recovery
When a meter has been starved of seed, back-flow of air
through the open shutter reduces delivery air flow. This
causes seed delivery to be slow. If you start or resume
planting with an empty seed pool, the delivery flow may
be too low to keep the meter supplied. The steps below
quickly “prime” the meter by rebuilding the seed pool.
Refer to Figure 107 (which depicts a recovery after an
incidence of bridging at air release screen)
1.
Close the shutter . This stops the air back-flow.
2. Clear the bridge or blockage that caused the
meter to run empty.
3. With the fan running, listen for seed to fall into the
inlet.
4. Wait for seed fall to taper off and stop.
5. Open the shutter to the operating setting.
6. Start or resume planting.
Population Troubleshooting Charts
29744
Figure 107
Seed Pool Recovery
29744
1
2
3
4
5
1
2
3
4
5
Population Too Low
Problem Cause Solution
Overall
Low
Population Incorrect seed rate Check seed rate charts
Ground Drive only: Incorrect Transmission
sprockets or shafts used Check Transmission sprocket tooth counts and
Driver/Driven locations.
Ground Drive only: Incorrect Range
sprockets or shafts used Check Range sprocket tooth counts and Driver/Driven
locations.
Empty pockets on disk (skips) due to
insufficient air pressure. Increase the controlled air to the meter. See “Fan and
Meter Pressurization Adjustment” on page 51.
Empty pockets on disk (skips) due to sticky
seed treatments not allowing seed to rapidly
fill the pockets. Increase seed lubricant.
Empty pockets on disk (skips) due to rough
field conditions causing seeds to fall from
the disks. Decrease field speed or increase the air pressure in
the meter.
Empty pockets on disk (skips) due to seed
pool too low, and seeds are not filling every
pocket on the disk. Open shutter one notch.
Empty pockets on disk (skips) due to disk
speed too high, and pockets are not filling. Decrease field speed or change to a higher cell count
disc.
Empty pockets on disk (skips) due to
singulation (4 tufted) brush too aggressive. Check for matted, stuck together fibers. Wash, scrape
clean, or replace as needed.
Empty pockets on disk (skips) due to seed
too big for pocket. Select the correct disk for the seed size.