Instructions for work
Mower conditioner
FC283 R
39
Ground pressure
The mowing unit suspension is obtained by 2 hydro-
pneumatic accumulators. By modifying the pressure in
the accumulators, the mowing unit ground pressure is
altered.
The hydro-pneumatic accumulator system also operates
the "safety breakback " function.
In case an obstacle is struck:
- The suspension pressure increases in order to
decrease the ground pressure.
- The mowing unit can pivot up to 25° to the rear.
- Once the obstacle is passed, the mowing unit
automatically regains its initial position.
To check the ground pressure:
- Place the machine in working position.
- Check that the chassis height is correct:
H = 600 mm (2’).
- Check the pressure given on the gauge:
• NORMAL operating pressure = 170 bar (2465 psi).
• MINIMUM operating pressure = 155 bar (2248 psi).
• MAXIMUM operating pressure =
185 bar (2683 psi).
- The pressure must be adapted to the nature and
moisture level of the ground.
The ground pressure adjustment determins the
safety breakback adjustment:
-
Example: when the pressure in the gauges
increases, the mowing unit ground
pressure decreases and the breakback
force increases
.
In case an obstacle has been struck, check
that the mowing unit has not been damaged.
Never adjust machine to a pressure not
comprized between these limit values.
