Maeda MC815C, Operation Manual, Page: 124 / 426

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1.4. OUTRIGGER SAFETY DEVICE
1.4.1 FUNCTIONS OF OUTRIGGER SAFETY DEVICES
The outrigger safety devices have the interlock functions shown in the table below.
Interlock Function Description
1 Outrigger Interlock
The outriggers will not operate unless the boom is in stowage
position (in the slew stowage position, fully retracted and fully
lowered position), and the positioning pins are securely inserted
with the outrigger rotaries slewed to the extension side
(outward).
2 Crane Interlock
The crane operation (telescoping, raising/lowering hook,
derricking, and slewing) is enabled only when all four outriggers
are extended and set (overhung and grounded).
The outrigger extension status is detected as follows.
CAUTION
• To enable crane operation, extend the outriggers, and set the mode selector switch on
the monitor to the “Crane” position.
Even if any one of the four outriggers fails to satisfy the outrigger setting detection
conditions (see 2 in the table above), the tricolor revolving light (red) illuminates.
If two of the four outriggers are detected as un-set, the crane interlock function is
activated and the crane operation will be disabled.
• To enable the setting operation and stowage operation of the outriggers, stow the
crane, and set the mode selector switch on the monitor to the “Outrigger” position.
• If the crane operation remains disabled even after the outriggers are extended and set,
and the mode selector switch on the monitor is set to the “Crane” position, there may
be faulty adjustment or failure in any of the outrigger safety devices.
Ask us or our sales service agency for repair.
• If the setting operation and stowing operation of the outriggers remain disabled even
after the crane is stowed, and the mode selector switch on the monitor is set to the
“Outrigger” position, there may be faulty adjustment or failure in any of the outrigger
safety devices. Ask us or our sales service agency for repair.