Maeda CC1485S-1, Инструкции по эксплуатации, Страница: 43 / 370

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CAUTIONS WHEN OPERATING BOOM
• Perform boom 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 large
impact to the Machine, and thus may damage the crane or
trip the Machine.
• When the boom is lowered, the working radius increases,
and the rated total load that can be hoisted decreases.
When working while raising/lowering the boom, pay extra
attention so that the mass of the load at the time the boom
is most lowered does not cause overloading.
• Pulling of the load laterally by raising/lowering, and/or
extracting/retracting the boom is prohibited. Do not attempt
to do the above under any circumstances.
• When telescoping the boom, be cautious while checking the
winding of the hook block.
• When the boom is extended, the working radius increases,
and the rated total load that can be hoisted decreases.
When working while extending/retracting the boom, pay
extra attention so that the mass of the load at the time the
boom is most lowered does not cause overloading.
CAUTIONS DURING SLEWING OPERATION
• Check the safety in the vicinity and honk the horn before
slewing.
• Perform the slewing lever operation as slowly as possible.
Make sure to start smoothly, slew at low speed, and stop
quietly.
Especially avoid sudden lever operations when the load is
hoisted, which may cause the load to waggle and cause the
Machine to lose balance, and thus may damage the crane
or trip the Machine.
• Attempts to pull the load towards the machine or let the load
stand up by slewing operation are strictly prohibited. Do not
attempt to do the above under any circumstances.
• Be careful to prevent the wire rope and/or hoisted load from
contacting an obstacle such as a tree or steel when hoisting
a load or slewing.
If caught by an obstacle, do not forcibly wind up the hoist
load, but untangle the caught part before winding up.
COOPERATION HOISTING IS PROHIBITED AS A GENERAL RULE
Cooperative hoisting, where two or more cranes are used to hoist a single load, is prohibited as
a general rule.
Cooperative hoisting is a highly dangerous operation that may invite tumbling of the Machine
due to deviated center of gravity, fall of hoisted load and damage of the boom.
If cooperation hoisting is required for unavoidable reasons, discuss and establish a work
scheme under the responsibility of the user, let the worker fully acknowledge the work method
and procedures, and only proceed under the direct leadership of the work supervisor.
Also, observe the following cautions:
• Use the cranes of same model.
• Choose the Machine model that can handle sufficiently larger load than the load to be
hoisted.
• Make sure only one person gives signals.
• Limit the crane operations to single operations as a rule, and do not attempt any slewing
operation.
• Appoint one responsible sling operator who is most experienced.