Maeda CC1485S-1, Инструкции по эксплуатации, Страница: 41 / 370

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CAUTIONS WHEN OPERATING CRANE
• Stability of a crane is decisively critical in the transverse direction of the carrier. In the diagonal
direction, although stability is increased, exceeding the rated load may result in damage of the
boom or Machine body. Do not turn the moment limiter (overload prevention device) off, even if
operating in the diagonal direction.
• Be sure to check that the override switch is at the "OFF" (auto) position before operating the crane.
Do not attempt to operate the crane when the override switch is at the "ON" (cancel) position.
The override switch is permitted to be at the "ON" (cancel) position only during inspection or
maintenance works.
• Perform work while paying attention to the display and warning of the monitor of moment limiter
(overload prevention device).
• Attempt to work beyond the capacity of the Machine may cause serious accidents and failures
caused by for instance tripping or fluctuation. Observe the rated total load chart when operating the
crane.
• Perform the crane operation slowly.
Sudden use of lever or accelerator may cause risks such as shaking, dropping of the load or
collision with the surroundings. Be especially careful to be slow during the slewing operations.
• When operating the crane, appoint a work supervisor and perform the work under the supervisor's
instructions.
Follow the supervisor's instructions on the method and procedure for the work. Determine the
method for details of mutual signs and follow the signs.
• Hoisting of lengthy load causes the load to lose balance and is dangerous. In the case of such load,
apply a rope to both ends of to stabilize the hoisted load.
• Do not allow unauthorized personnel to approach the working radius or under the load because of
risks of falling load and contact with load. This could cause a serious bodily accident. Also consider
that the working radius increases when the load is hoisted and the boom is deflected.
• Operations requiring more than the machine performance can cause accidents or failure. Crane
operations must always be carried out according to the rated total load chart.
• 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.
If caught by an obstacle, do not forcibly wind up the hoist load, but untangle the caught part before
winding up.
• Do not pull laterally, pull toward you or hoist diagonally. Such attempt may cause the crane to
tumble or get damaged.
• It is dangerous to operate the crane under bad weather or at places where the view is not clear.
Work lamps or other lighting devices should be used in dark places.
When the view is bad because of bad weather (rain, fog, snow, etc.), stop the operation and wait
until the weather recovers.
• Do not use for purpose, for instance raising a person using a crane, other than the true purpose.
• If the alarm buzzer of the over-hoist detector sounds, immediately release your hand off the winch
lever. Winding-up of the hook block stops. Then, operate the winch lever "downward" (push it
forward) to wind down the hook block. Also, a boom extending operation hoists the hook block. For
the distance from the boom and hook block, provide a sufficient allowance for operating the crane.
• When the boom is extended, the hook block is wound up. Operate the winch lever "downward" and
extend the boom while lowering the hook block.
• If an overload is caused during work, operate the winch lever "downward" and wind down the winch
to unload.
Do not violently raise or lower the boom. Such attempt may cause serious accidents by tumbling.
• The volume of the hydraulic oil in each of the cylinders changes depending on the temperature.
By leaving idle with a load being hoisted, as the time passes by the oil temperature drops and the
hydraulic oil volume decreases, and changes such as the boom derrick angle decrease and boom
length decrease may occur.
In that case, execute boom derricking operations and boom extension operations appropriately to correct.
• Do not leave the operator's seat when a load is hoisted. When leaving the operating position, first
unload and set the lock lever to "LOCK" position.
• When the hook block is not used, wind up the winch.
The hook block of an empty load may hit operators near the load.
• Operation while hoisting a vibro compactor or other vibration generating attachment is in principle
prohibited. The winch or other unit may be damaged by the vibration of the attachment.