Maeda CC423S-1, Руководство по эксплуатации

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[5] OVER-HOISTING PREVENTION DEVICE
CAUTION
When raising the hook, be careful of clearance between the hook and boom.
When the boom is extended, the hook is also wound up.
Perform boom extension operation while always checking the hook height.
If the hook height becomes excessively high while it is hoisted or
the boom is extended, the following occur:
• The hook displayed on the monitor flashes in red.
• When hook hoisting or boom extension operation is performed,
the alarm issues an intermittent sound “peep”.
• Hook hoisting and boom extension actions stop automatically.
When an automatic stop occurs, immediately recover from the stop.
For recovery operation, perform hook lowering operation and boom
contraction operation.
[6] EXCESSIVE UNWIND DETECTOR
When the hook is lowered and length of wire rope in the winch
drum becomes short:
•
The winch displayed on the monitor flashes in red.
•
When hook lowering operation is performed, the alarm issues
an intermittent sound “peep”.
• The hook lowering action is automatically stopped.
When an automatic stop occurs, immediately recover from the
stop.
For recovery operation, perform hook hoisting operation.
[7] NUMBER OF WIRES FALLS CHANGE DISPLAY
• Before changing the number of wire falls with the switch for changing the number of wire
falls, be sure to stop the ongoing crane operation.
Doing this during crane operation may result in unexpected accidents.
• Before starting a crane operation, make sure that the number of wire falls set for the moment
limiter agrees with the actual number. Mistaking the number of wire falls may cause serious
accidents to occur.
A safety load per one wire rope is specified.
The number of wire falls must be determined according to the
maximum load to be lifted.
Always make sure that the number of wire falls indicated on the
monitor agrees with the actual number.
This machine is equipped with a hook that can be used for both
two and four wire ropes hung as the standard specifications.
The set value for the number of wire falls will remain memorized
even after the starter switch is set to the “OFF” position.
For changing the number of wire falls, refer to “Operation 2.1.1
[1-1] Hook Sling Number Change”.