Maeda MC305C-3 - Page 117

M A E D A Mini-Crawler Crane Section 4 – CRANE OPERATION
3/2019 MC305C-3 4-53
3. Operate the winch lever (3) to the "DOWN"
(push forward) side to loosen the hook block
from the stowing position.
Fig. 4-141
• Verify that the moment limiter override switch,
boom stowing switch, and hook stowing switch
are OFF.
If these switches are at "ON" position, the
operations will not stop.
NOTICE: If the Moment Limiter Override Switch is
"ON", an alarm buzzer will sound intermittently.
Fig. 4-142
• Over hoisting the hook block will activate the
alarm buzzer of the over winding detector and
the operation stops.
When the alarm buzzer sounds, release your
hand immediately from the winch lever (3) to the
"Neutral" position to stop raising the hook.
Then, operate the winch lever (3) to "DOWN"
(push forward) side to lower the hook block.
Fig. 4-143
• Extending the boom will hoist the hook block,
activating the alarm buzzer of the over winding
detector and the operation stops.
When the alarm buzzer sounds, release your
hand immediately from the boom telescoping
lever (2) to the "Neutral" position to stop
extending the boom.
Then, operate the boom telescoping lever (2) to
"RETRACT" (pull toward you) side to retract the
boom.
Fig. 4-144
• Use the horn switch to honk the horn to notify
the people around of the danger during the
crane operation.
Fig. 4-145
• Verify that all the outriggers are extended and
set.
• If any of the four outrigger extension lamps (2) or
four outrigger setting lamps (3) is flashing in red,
the crane cannot be operated.
Fig. 4-146