DALBO FRONTFLEX, Manual, Page: 14 / 22

FRONTFLEX
Side 14
Options
Crackerboard
The Crackerboard is mounted in front of the packer roller rings and can be set to per-
form tillage actions of crumbling, levelling and packing as needed. Only the 150 and
300 cm models can be equipped with a Crackerboard.
Operation
The Crackerboard is a versatile piece of equipment, with several application possibil-
ities in one unit. At a depth setting of approximately 3 to 5 cm, depending on the
soil, the vibrating power of the tines will crush clods. A deeper setting of the Crack-
erboard provides a greater levelling effect than that of a levelling board, as a small
amount of soil builds up in front of the tines.
Fig. 8
Under most conditions, best results will be achieved by setting the tines of the
Crackerboard at a 70˚ angle to the surface of the ground. The working depth must
be adjusted according to subsequent crops and the condition of the field. The
Crackerboard is
not
intended for use as a bulldozer blade but rather for light tillage
operations. Each tine moves and flexes individually in response to counter pressure
from land contours, resulting in a more uniform field surface than that obtained
from use of a levelling bar.
Angle and depth adjustment
The angle of the tines of the Crackerboard can be adjusted manually if necessary.
The angle of the tines influences the action of the tines in the soil. If the tines are set
to work aggressively and the working depth is set in the uppermost soil layer, the
tines will produce the greatest amount of vibrations possible to crush clods, result-
ing in a finely crumbled surface (Fig. 9).
If the tines are set deeper into the soil, pressure on the soil will be created and the
tines will more easily be able to overcome obstructions (Fig. 9). This setting is rec-
ommended for levelling the field. At the same time, an effect similar to the clod
crushing action of a levelling bar will be achieved.