Great Plains
| 411-332M | 2019-02-19
46
3P3025AH
Operating Instructions
Air-Pro Meter Operation
The meter disc is driven, top forward, by a chain drive
(not shown) always connected to the section drive shaft.
At non-planting rows, use a blank disc (page 75).
Seed is gravity-delivered to the inlet from the hopper.
Seed enters the meter at the seed inlet shutter
(if open), and forms a seed pool at the base of the
meter. Seed pool size is controlled by the shutter
handle setting (which is the only user adjustment at
the meter). Initial shutter settings are given in the seed
rate charts.
Meter pressurization air enters the meter at , and exits
the meter primarily at the seed pockets in the seed disc.
The pressure differential holds seed in the disc
pockets rising from the seed pool. Excess seed at a
pocket is picked off by the tickler brushes .
The strip and drop brushes block Meter pressurization
air. Seeds passing the drop brush are free to fall into
the seed tube, and are detected by the seed sensor .
Meter Operation
1. Install discs for your crop/population range per the
Seed Rate Manual
and the instructions beginning
on page 73 of this manual.
2. Open the shutter at planting rows to the
recommended initial setting (from the Seed Rate
charts). At unused rows, install a blank disc
(page 75) and close shutter.
3. Set sprocket indexing if staggering a twin-row crop
(see
Seed Rate Manual
for details).
4. Operate fan to achieve suggested manifold pressure
(
Seed Rate Manual
, and page 53).
5. With all rows primed, rotate meters one turn to fill
pockets to edge of drop brush. Rotate the drive shaft
(top forward) with a
7
/
8
inch (23 mm) wrench, or
raise and rotate ground drive wheel (top forward).
6. Leave fan running (to keep seed in top pockets).
Install rain covers. Commence planting.
Meter operation is automatic from this point on.
See also:
” on page 91, and
Figure 47
Air-Pro
®
Seed Meter at Row
31040
3
2
1
5
6
4
7
8
9