Great Plains CDA600 Operator Manual - Manual (Page 48)

Centurion CDA600
270-600M-ENG
46 2013-06-14
4.11.6 Seed Firmer
Adjustments
Row units include a seed flap, and accept
one of two optional seed firmers.
The seed flap requires no adjustment, but
may need to be replaced if worn, and may
need to be shortened if an optional seed
firmer is added after initial delivery.
Row unit disc blades may be sharp. Use
caution when making adjustments in this
area. To adjust the Keeton® Seed Firmer,
lower the drill until the discs of the row units
are resting on the ground.
4.11.7 Keeton® Seed
Firmer Adjustment
The optional Keeton® Seed Firmer is an
engineered polymer shape that slides
down the seed trench. It traps seeds as
they exit the seed tube and firms them into
the bottom of the “V”.
The firmer is provided with a preset tension
which is recommended for using the first
year. The tension screw Πcan be tightened
in subsequent years according to your
needs. Firmers should provide just enough
tension to push seeds to the bottom of the
trench.
4.11.8 Opener Depth
(Press Wheel Height)
Refer to Figure 25.
Set opener seeding depth Πby adjusting
press-wheel height.
To adjust, first raise openers slightly, then
lift and slide T handles  on top of openers.
Adjust all press wheels to the same height.
Each increment of the handle adjusts the
seeding depth by approximately 6mm. The
range is approximately 0-89 mm seeding
depth.
For more shallow seeding, slide T handles
forward toward implement. For deeper
seeding, slide T handles backward away
from implement.
If moving the T handle backward doesn’t
cause the opener to achieve desired depth,
lower the disc coulters by lowering the
frame height, and increase weight transfer
pressures if necessary.
4. Adjustment / Operation
Figure 24. Keeton Seed Firmer
Figure 25. Adjusting Opener Depth