KUHN HR303D, Руководство оператора

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Instructions for work
Power harrows
HR303D/M
51
3. Machine use
- Lower machine until blades are at 100 - 150 mm (3.9’’
- 5.9’’) from the ground.
- Engage tractor PTO drive before working with the
machine.
- Lower the machine progressively while on the move.
- Do not disengage PTO and do not stop tractor before
having lifted the machine from the ground.
Before leaving the tractor or before
adjusting, maintaining or repairing the
machine, disengage the PTO drive, turn off
the engine, remove ignition key and wait until
all moving parts have come to a complete
stop and apply park brake.
Engaging the machine in the ground before engaging the tractor PTO can lead to excessive
power requirement and trigger the torque limiter.
Only work in straight lines. Lift the machine to turn.
Use of the power harrow entails limits which must be respected in all situations and that are
often tied in with:
- Weather conditions: Avoid working during and immediately after rain, wait until the ground
to be worked is completely drained.
- Soil types: Smooth clods indicate too malleable or too humid soil to be worked in; Wait until
ground is completely drained. Soil concistency is ideal when clods crumble without
sticking.
- Tractor power: Adapt working depth, speed and rotor speed to power available and work to
be done. Never exceed the maximum allowable DIN engine power: 139 kW (190 hp).
The nature of the work: the power harrow is an excellent implement for secondary tillage and
seedbed preparation after conventional ploughing, chisel ploughing or soil loosening. It is far
less efficient for primary tillage work especially on hard and dry ground.