[At a Fly-jib angle in 0 or 20 degrees]
Perform the crane operation in the boom angle range of “45 degrees” or more. When a load is
hoisted in a condition that the boom angle is less than “45 degrees” and the boom length is
“5.3 m” or longer, the moment limiter emits a warning signal, the buzzer sounds intermittently,
and hook hoisting, boom telescoping and boom lowering operations automatically stop.
Such operations also automatically stop when it is beyond possible working range, and boom
angle lower limit light on the monitor blinks in red.
However, when the boom length is less than “5.3 m”, the moment limiter does not emit a
warning signal. In a condition where the boom angle is less than “45 degrees”, boom lowering
operation is not available unless the boom length is less than “5.3 m”.
[At a Fly-jib angle in 40 or 60 degrees]
Perform the crane operation in the boom angle range of “65 degrees” or more. When a load is
hoisted in a condition that the boom angle is less than “65 degrees” and the boom length is
“5.3 m” or longer, the moment limiter emits a warning signal, the buzzer sounds intermittently,
and hook hoisting, boom telescoping and boom lowering operations automatically stop.
Such operations also automatically stop when it is beyond possible working range, and boom
angle lower limit light on the monitor blinks in red.
However, when the boom length is less than “5.3 m”, the moment limiter does not emit a
warning signal. In a condition where the boom angle is less than “65 degrees”, boom lowering
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