Maeda CC1485S-1, Инструкции по эксплуатации, Страница: 184 / 370

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3.18 BOOM DERRICKING OPERATION
• Perform the right work equipment operation lever
operation as slowly as possible.
Especially avoid sudden lever operations when the
load is hoisted, which may cause the load to waggle
and give a large impact to the machine, and thus may
damage the crane or tip the machine.
• Pulling-in and raising work of a load by derricking the
boom is prohibited. Be sure to perform the hook
hoisting operation to lift a load.
• When the boom is lowered, the working radius
increases, and the rated total load that can be hoisted
decreases. When operating by derricking the boom,
pay extra attention so that the mass (weight) of the
load at the time the boom is most lowered does not
cause overloading.
Operate the right work equipment operation lever (1) as
follows.
• Lowering: Push the lever outside (right side).
• Neutral: Release your hand from the lever.
The lever returns to the neutral position and the
boom derricking stops.
• Raising: Pull the lever inside (left side).
NOTES
• Adjust the boom derricking speed by the stroke of the right
work equipment operation lever (1) and depression
amount of the accelerator pedal (2).
• When the boom length display of the moment limiter
display is "5.3m" or longer, the lowering action stops
automatically so that the boom angle does not fall below
the level.