Zoomlion RT35, Руководство оператора

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07 - 24 RT35 Rough Terrain Crane
G. Operate – retract the boom
(a) To retract the boom, activate the deadman switch to use this function.
(b) Tilt the pedal backward to retract the telescopic sections 1, 2 and 3.
Figure 07 – 18 Telescopic Sections - Retract
(c) Release the pedal slowly to the neutral position to stop the telescoping movement.
The boom stops at that point.
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When you extend and retract the boom, the hook block moves up
and down. Make sure that you adjust the length of the hoist
wire-rope when you adjust the length of the boom. Do not extend
the boom too quickly.
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The speed of the extend and retract movements change by:

The extend / retract pedal - how far you tilt it
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Throttle pedal - increase or decrease the engine RPMs.
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When the boom is fully retracted, it can be two seconds before the
boom starts to move.
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Lift the load vertically. Do not try to lift the load diagonally. Do not
pull a load across the ground.

Do not use the bypass key switch when you do usual crane
operations.
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An extended boom can retract a short distance if the boom is
extended for a long period of time. The items that follow are a
possible cause for the movement:

A change in the hydraulic oil temperature

A change in the angle of the boom
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Solutions:

Lubrication status
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Make sure that the hydraulic oil temperature does not increase
too high.
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Do not extend / retract the boom with a suspended load.
Extend the boom to the correct length.
Caution