Drill depth
The drilling depth is determined by the depth
setting of the machine on the hydraulic cylinders
and the pressure setting on the drill coulters.
The fine tuning of adjustment possibilities must
be matched to the soil conditions and can thus
only be found in the field using operating position.
Aluminium clips must be removed to enable a
deeper placement of seed.
Depth setting
The same number of aluminium clips
of identical colour combination must be
added on all cylinders.
Coulter pressure
The harder the soil and the deeper the seed is
to be placed, the higher the required pressure.
When retracting the cylinders the seed coulters
are pressed down into the ground.
The depth is adjusted with aluminium clips on
the hydraulic cylinders.
The resulting pressure is transferred to coulters
and pressure roller via the rubber elements.
The coulter pressure can be increased by back-
ing out the adjustment spindle.
Adjusting screw
Displacing too much pressure on the coulters
will just have the opposite effect. The press rolls
can sink into the soil, so that the exact depth
guidance is no longer ensured.
The settings on the hydraulic cylinder and the
coulter pressure adjustment complement and
effect one another.
Changes to the hydraulic cylinder mainly effect
the drill depth, but also the coulter pressure and
the pressure rollers.
Changes to the coulter pressure adjustment
mainly effect coulters and pressure rollers, but
also have an influence on the drill depth.
With each alteration one must therefore
check the drill depth and the effect of
the pressure rollers on recompaction
and depth guidance.
23
