Great Plains 3PNG15 Material Rate - Manual (Page 14)

12 3PNG12 & 3PNG15 Great Plains Manufacturing, Inc.
202-579B 12/01/2010
Refer to Figure 12
There is one rate handle
for the entire Small Seeds
box, located on the front of the drill near box center. The
seed rate handle controls the percent engagement of the
seed sprocket in each small seeds cup.
1. Loosen wing nut under handle.
2. Set indicator to just past seed rate chart value.
3. Tighten wing nut .
Note: Setting the handle to zero (0) stops all seed flow.
This is useful for making certain row unit adjust-
ments without planting seed.
Checking Small Seeds Box Rate
To calibrate seed mix:
1. Set the Drive Type to 1, 2 or 2A and the Seed Rate
Handle to the seed rate table value (or if you have
planted this seed previously, start with those set-
tings).
2. Record the weight of an empty container large
enough to hold seed metered from the native grass
box.
3. Raise drill to get drive wheel off the ground. To cali-
brate using calibration crank, attach crank to upper
jackshaft.
4. Fill three or more compartments at least 1 /
2
full of
seed in the small seed box. Pull seed hoses off
openers under the compartments.
Refer to Figure 13
5.
To calibrate using calibration crank, disengage
gauge wheel lockout, and attach calibration crank to
coupler on left-hand side of gauge wheel jackshaft
using retaining pin.
6. Turn gauge wheel or crank several times to fill seed
cups with seed. Continue to turn gauge wheel or
crank until seed falls to the ground from each cup.
7. Place the empty container under three seed hoses to
gather the seed as it is metered.
1
2
Figure 12
Small Seeds Rate Handle
26271
1
2
1
2
Figure 13
3PNG Calibration Crank
and Native Grass Sprockets
23467