Maeda MC-174CRM, Руководство по эксплуатации, Страница: 137 / 276

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2.14 CAUTIONS BEFORE CRANE OPERATION
• Not observing these cautions before operation may result in serious accidents.
• It takes a certain moment for the over hoist detector to effect automatic interruption after it
detects an over hoisting condition. Therefore, when the Over hoist and moment limiter alarm
buzzer beeps, always release all of the operation levers to the NEUTRAL position. Otherwise,
when operations as below are continued, such operation may not stop.
• Winch lever "UP" operation, Boom telescoping lever "Extending"operation and Boom
derricking lever "Raise" operation.
• Verify that the emergency stop cancel switch, boom stowing
switch, and hook stowing switch are at the OFF position.
If these switches are at ON position, the operations will not stop.
• Over hoisting the hook block will activate the alarm buzzer of the
over hoist 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.
• Extending the boom will hoist the hook block, activating the alarm
buzzer of the over hoist 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.
• Raising the boom will hoist the hook block, activating the alarm
buzzer of the over hoist detector and the operation stops.
When the alarm buzzer sounds, release your hand immediately
from the boom derricking lever (4) to the NEUTRAL position to
stop raising the boom.
Then, operate the boom derricking lever (4)
to “DOWN” (push
forward) side to lower the boom.
• Use the horn switch to honk the horn to notify the people around
of the danger during the crane operation.
• Verify that all the outriggers are extended and set.