Farmet FALCON 3, Operating Manual

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15.3 SETTING THE DOWN PRESSURE OF THE SOWING BODIES
The required down-pressure of the sowing bodies is set using the hydraulic pressure in the tractor. The circuit is
equipped with a ball valve (marked green) in case of a loss of pressure due to the leakage of the hydraulics in the
tractor. When you set the required pressure, the pressure will not decrease once the valve is closed.
The following parameters must be adjusted for correct setting:
1. Required sowing depth
2. Soil conditions
3. Pressure extent
The parameters above may only be set correctly in the field and tested directly under the given soil conditions.
The operating staff must always consider the soil conditions! It is not possible to set maximum pressure in loose
and soft soil conditions. On the other hand, it is not appropriate to set minimum pressure in hard and heavy soil
conditions as the coulters would not cut into the soil.
When the drill coulter pressure is too high and the soil conditions have not been estimated properly, the
following may occur:
The compacting wheel of the drill coulter is forced too deep into the ground, lifting the compacting pneumatic
roller, resulting in drill coulters not inserted in the ground. This leads to failure in reaching the required depth of
sowing, wrong turning of the drill coulters and incorrect compaction of the soil before the drill coulters, or to
their complete stopping in the worst case. This may lead to errors in placing seed clusters in the soil.
Picture 58 – Location of the sowing body pressure gauge
Approximate down-pressure of the
sowing bodies of
FALCON
*
Pressure
gauge
Pressure gauge
20 20
50 50
100 70
150 115