M A E D A Mini-Crawler Crane Section 4 – MOMENT LIMITER (OVERLOAD DETECTOR)
1/2019 MC285C-3 4-77
Moment Limiter Override Switch
DANGER!:
The moment limiter override switch disables
ALL safety features, ALL limits and ALL
automatic stops of the Moment Limiter Digital
Load Safety System.
When this switch is turned to the “ON”
position (OVERRIDE), all the Moment Limiter’s
interlocked automatic safety/ stop /limit
features become INACTIVE & DISABLED. All
crane operations in this situation are
unprotected by the Moment Limiter system.
The risk of a crane accident increases greatly
without the use of the Moment Limiter system.
The Moment Limiter system is a safety aid to
the operator, not a tool or excuse for poor and
dangerous crane operation.
With or without the protection of the Moment
limiter system, crane operation outside of the
parameters of the Rated Total Load Chart(s),
unsafe operations beyond accepted safe
crane practices and proper crane operation
technics may result in dropping of a hoisted
load, breakage of crane components or the
machine tipping over. A serious accident
resulting in death or serious injury may occur.
Use this switch only in the case of an
emergency due to failure of the Moment
Limiter system, and or machine maintenance /
service when any crane travel, lifting
operations are not being performed.
Do not store the override key permanently in
the moment limiter override switch box.
Fig. 4-208
Fig. 4-209
To Override the Moment Limiter System:
• The moment limiter override switch box is
located remotely, under the fuel tank, in the left
rear access compartment of the machine.
• KEY TO "ON" POSITION = OVERRIDE Insert
the OVERRIDE KEY into the moment limiter
override switch box. Turn the key clockwise
(right) to "ON" position. (The spring-loaded
switch automatically returns to the "OFF"
position when you release the key). Now the
system is in OVERRIDE. ALL safety features,
ALL limits and ALL automatic stops of the
Moment Limiter system are INACTIVE &
DISABLED for a total of 3 minutes.
• The moment limiter override switch box LED
light will illuminate solid for 2-1/2 minutes, then it
will flash for the last 30 seconds of OVERRIDE.
• The Working status light will flash RED during
• OVERRIDE.
• The Moment Limiter warning buzzer /alarm will
sound continuously for 3 minutes.
• The Moment’s Limiter’s Crane Operation Top
Screen will display the warning "Overriding/Turn
starter key off to reset" for 3 minutes.
• Crane functions boom extend, and boom
lowering will be limited in speed to 20% of
normal speed during OVERRIDE.
• To discontinue OVERRIDE, at any time under 3
minutes, turn the engine starter ignition key to
OFF shutting down the machine. Restart the
machine as normal, and the Moment Limiter
system will commence with normal start up
sequence.
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