KUHN HRB353D, Руководство оператора

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Power harrows
52
HRB353D - 403D
Instructions for work
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 related to:
- 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 carried out. Never exceed the maximum allowable DIN engine power: 118 kW (160 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.
The clod size depends on:
- The rotor speed.
- The forward speed.
- The working depth.
- the use of levelling bars (Optional equipment).
Example: large clods result from a low rotor speed and a high forward speed.