M A E D A Crawler Crane OPERATION
6/2020 CC1908S-1 Quick operation guide 15
4.3 CRANE OPERATION
[HOISTING AND LOWERING]
WARNING
・When hoisting a load, the load will shift
forward slightly due to boom deflection.
Notify slinging operators and other workers
in the vicinity.
・If the hook block is over-hoisted, the
overwinding prevention device detects
overwinding and the warning buzzer
sounds intermittently. When the buzzer
sounds, immediately place the right-hand
control lever in the neutral position to stop
the hoisting operation.
・When lowering the hook a long distance
such as for underground work, be sure to
leave at least three turns of wire rope on
the winch drum.
IMPORTANT
・Take care not to lower the hook block
excessively in order to prevent it from
coming into contact with the ground. Doing
so results in irregular winding on the winch
drum.
・When stopping the winch operation, do not
suddenly return the lever to its neutral
position. Doing so may loosen the wire
rope, resulting in irregular winding on the
winch drum.
Operate the right-hand control lever (1) as
follows:
・Lowering: Push the lever forward.
・Neutral: Release your hand from the lever.
The lever will return to the neutral
position and the hoisting/lowering
of the hook block stops.
・Hoisting: Pull the lever toward you.
Adjust the winch hoisting and lowering
speed by varying the stroke of the right-hand
control lever (1) and the depression of the
accelerator pedal (2).
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