2-20
CAUTIONS DURING SWING OPERATION
• Check the safety in the vicinity and blow the horn before swinging.
• If the boom derrick angle is small, be careful to prevent the boom
from hitting the driver or the Machine.
• Be slow as much as possible when operating the swing lever. Make
sure to start smoothly, swing slow, 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 to bring forth the load or let the load stand up by
swinging operation are prohibited. Do not attempt under any
circumstance.
• 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 when swinging.
If caught by an obstacle, do not forcibly wind up the hoist load, but
untangle the caught part before winding up.
• Certain outrigger extension condition may cause the boom to hit an
outrigger and cause the crane to be damaged or the Machine to trip.
Be careful to prevent the boom from hitting outriggers during swing
operation.
COOPERATION HOISTING IS PROHIBITED AS THE RULE
Cooperation hoisting, that is to use more than one crane to hoist a load, is prohibited.
The cooperation hoisting work is a highly hazardous work that may cause for instance a trip of the
Machine due to uneven center of gravity, fall of the hoisted load or boom damage.
If the need to work so exists for unavoidable reason, establish a work scheme by responsibility of the
user, discuss fully, let the worker fully acknowledge the work method and procedures, then work
carefully under the direct leadership of the work supervisor.
And, observe the following cautions as well.
• 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 signs.
• Limit the crane operations to single operations as the rule, and do not attempt any swing operation.
• Appoint one responsible slinger who is most experienced.
WORKING AT THE SITE WITH UNDERGROUND LIFTING
• Leave at least three loops of wire rope in the winch drum when winding down the wire rope in case of
underground work or similar occasion. This Machine is equipped with three-winding stop alarm /
automatic stop device as the safety device, but even then be fully careful to prevent this safety device
from activating.
• Make sure signs are communicated fully.
• Be especially careful with the crane operations.
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