Maeda MC285C-3 - Programmable Moment Limiter; During Setup

Section 4 – MOMENT LIMITER (OVERLOAD DETECTOR) Mini-Crawler Crane M A E D A
4-64 1/2019 MC285C-3
Programmable Moment Limiter
WARNING! Tip Hazard. The following
precautions should always be observed
when reading the “rated total load” provided
by the programmable moment limiter.
• The outriggers should be placed on a level
and firm surface.
• The outriggers should be at maximum
extension as much as possible.
• The weight of an object, including that of a
hoisting accessory and slinging rope, must
remain below the rated total load for
hoisting objects. With the boom length
(number of stages) and angle specified,
make a comparison between the rated total
load provided by the programmable
moment limiter and the weight of the
object.
The programmable moment limiter provides
readouts on the rated total load under the
following conditions:
• The outriggers are placed on a level and firm
surface.
• No deflection is developed in the boom.
CAUTION: The following safety messages
address a potential Equipment Damage
Hazard concerning the moment limiter:
• Avoid direct sunlight. Do not allow the
temperature of the moment limiter body to
exceed the specified range.
• Avoid locations with strong acids or
alkaline.
• Avoid impact to the moment limiter body.
During Setup
NOTICE:
• The moment limiter calculates the moments
assuming the machine is level. If you work with
the crane when the machine is not level,
warnings and alarms are not issued even
when the rated total load is near maximum.
• Always set the outrigger horizontally to the
ground while looking at the level gauge.
• Before using the moment limiter, check that
the boom angle display, boom length display
and actual load display are displayed correctly
following the crane movements.
• Always make sure the number of falls setting
of the moment limiter matches with the number
of falls of the crane. If they do not match,
always match them by changing the number of
falls setting of the moment limiter or by
changing the number of falls of the crane.
• Do not carelessly change the setting when
measuring with the moment limiter.