Furukawa Unic URW376C4U -T Series, Operation & Maintenance Manual

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11-3
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
outrigger 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 outrig-
gers are being extended.
It may invite such accident as that the foot may be crushed by the out-
rigger.
★
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 (maxi-
mum, halfway, minimum) 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