Kverneland a-drill, Operating Manual

Page: 74 / 115

Adjusting the machine
74
Hydraulic blower
The hydraulic blower flow is adjusted using the adjustment knob (A)
located on the hydraulic unit.
Adjustment variant n°1
The pump is constant and the oil flow to the tractor is not adjustable.

Tighten the adjustment knob to the maximum (A).

Switch on the tractor.

With the tractor, go up to the same engine speed as if you were
working in the field.

Switch on the blower.

Adjust the blower rotation speed using the adjustment knob (A).

Ensure that the tractor hydraulic pump provides enough oil to the
unit. This avoids an important reduction in the blower rotation
speed in case of reduction in tractor engine speed or operation of
other hydraulic functions.
A
A
The adjustment of the hydraulic blower is an important
task that must be carried out carefully. Failure to respect
the following instructions could lead to machine
damage.
•
The adjustment must be as precise as possible to avoid
sowing defects in case of low revving or damage to the
blower in case of over-revving.
•
A measuring strip from 71°C to 110°C (A) has been
applied to the hydraulic motor. Always ensure that the
temperature does not exceed
80°C
.
•
The "free return" of the tractor must not exceed 5 bars. A
higher pressure risks damaging the hydraulic motor.
•
The adjustment is only valid for the tractor used. Redo the
blower adjustments when using another tractor.