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[3] CRANE STOWAGE OPERATION
Standard operating procedures/
Machine conditions
Indication and Alarm
Operation of safety
devices
Operating the crane
• Operating crane mode selector
lever
• Crane stowage lamp lights up
• One of the tricolor revolving
lights, lights up according to the
load capacity ratio being
applied, after comparison
between actual operation and
Rated Total Load.
• Load capacity ratio for tricolor
revolving lights to light up
• Load capacity ratio of less
than 90 %: Tricolor revolving
lights illuminates in green
･Load capacity ratio from 90 to
less than 100%: tricolor
revolving light illuminates in
yellow, and an intermittent
alarm sounds
･Load capacity ratio of 100% or
larger: Tricolor revolving
lights illuminates in red, and a
continuous alarm sounds
Moment limiter
• When load capacity
ratio becomes 100 % or
larger (overload),
winding operation,
boom extension and
boom lowering are
suspended
Even if only one out of four
outriggers leaves the ground
during crane operation
• Outrigger grounding lamp (red)
blinks
Crane Interlock
• Even if only one out of 8
lamps, outrigger
extension lamps and
outrigger grounding
lamps, goes out,
winding operation,
boom extension and
boom lowering are
suspended.
For winch over winding • Alarm buzzer constantly sounds
Over hoist detector
activates
Winch winding operation
stops
For winch over unwinding • Alarm buzzer constantly sounds
Over unwinding detector
activates
Winch unwinding
operation stops
When the machine tilts at an
angle of 3 degrees or more during
crane operation
• Alarm buzzer constantly sounds
Machine tilt detection
device activates
[4] CRANE STOWAGE OPERATION
Standard operating procedures/
Machine conditions
Indication and Alarm
Operation of safety
devices
Bringing the machine into a boom
stow position
• Boom is fully retracted
• Boom is in horizontal stow
position
• Boom is in slewing stow
position
• Crane stowage lamp lights up
Outrigger Interlock
• If crane stowage lamp
(yellow) does not light
up, all outrigger
operations are brought
to a stop
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