Great Plains 3N-4020 Operator Manual - Manual (Page 34)

30 3N-4010F/3N-4010HDF/3N-4020F Table of Contents Index Great Plains Manufacturing, Inc.
196-359M Table of Contents Index 2013-10-29
About Hydraulic Drive Rate
Before it can control seed rate, the console must be:
• configured with information about your drill and
intended planting speed,
• configured with a calibration number for the seed and
rate range, and;
• calibrated to fine-tune the calibration number and
speed.
This process is described starting on page 39.
Refer to Figure 29
With those steps completed, field seeding rate is con-
trolled manually by adjusting the target “set=” rate
using the
⇑ / ⇓ arrow buttons. Field rate can also be con-
trolled by a pre-loaded “recipe” or an external GPS con-
troller.
In field operation, the hydraulic drive console displays:
set=
the currently active desired seeding rate
out= the current system seeding rate
spd= (over number), the current speed
Seeding Depth
Refer to Figure 29
Seeding depth is controlled by coulter depth in
front, and press-wheel height in back. Seed cannot be
placed any deeper than coulter depth. Before adjusting
row units, make sure coulters are performing as desired.
See “Level Frame Side to Side” on page 102.
See “Level Frame Front to Rear” on page 102.
See “Frame-Mounted Coulters” on page 63.
See “10 Series Opener Depth” on page 74.
Consistent seeding depth relies on appropriate
down-pressure for conditions.
See “Frame Weight” on page 68.
See “10 Series Row Unit Down Pressure” on page 71.
For information on opener adjustments, see one of:
“10 Series Row Unit Adjustments” on page 70
“10HD Series Row Unit Adjustments” on page 75
“20 Series Row-Unit Adjustments” on page 84
For information on troubleshooting opener problems, see
“Troubleshooting” on page 90.
Figure 29
Console Planting Display
28325
Figure 30
Seeding Depth
27070
2 1
3
1 2
3