Furukawa Unic URW370C4U Series, Руководство по эксплуатации и техническому обслуживанию

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11-6
HOW TO OPERATE CRANE
Procedures to set up outriggers
• Crane operation without setting up the outriggers is strictly prohib-
ited.
• Do not operate the crane and extend the vertical cylinders and inner
boxes while outriggers have been stored.
• When setting up the outriggers on a rough ground or on a slope, be
sure to place a support (such as plank, steel plate etc.) under the out-
rigger foot flanges to keep the crane level.
In addition, when the crane is to be operated on a soft ground, take
the same measures to prevent the outrigger foot flanges from sinking
into the ground when a cargo is lifted up.
Setting up the crane on a ground where it is not solid and firm
enough may cause it to be overturned.
• Do not put your foot under the outrigger foot flange while outriggers
are
being extended.
It may invite such accident as that the foot may be crushed by the
outrigger.
• Operation with the crane kept leaning makes it unstable when a
cargo
is lifted up.
Such operation can cause the outriggers to be damaged and the
crane to be overturned.
• The rated load is to be changed according to how far (maximum, Not
maximum
ext) the outriggers are extended.
Be sure to consult the “sticker concerning outrigger extension” for
the rated load corresponding to each extension.
• In normal crane operation, set up the crane level on a solid and firm
ground with the outriggers fully extended and lift up the crane body
by approx. 2in.(50mm) above the ground.
• When outriggers are extended or being stored, be sure to insert the
set pins so that the outriggers may not be rotated unexpectedly.
• When setting up outriggers on the ground with the vertical cylinders,
carry it out after the inner boxes have been extended. (Do not extend
an inner box any more after the outriggers have been set up on the
ground.)
WARNING