OPERATING CONTROLS AND PROCEDURES MLC165-1 OPERATOR MANUAL
3-26
Published 08-06-19, Control # 237-09_v1
BOOM ANGLE INDICATOR
The boom angle indicator (Figure 3-1) is located on the
boom butt and is visible outside the right cab window. The
indicator shows the angle of the boom in degrees above
horizontal.
NOTE The boom, luffing jib, and mast angles can be
viewed on RCL/RCI display or the Main display.
RCL/RCI WARNING LIGHT
The purpose of the RCL/RCI warning light (11, page 3-2) is
to alert personnel in the vicinity of the crane of the degree to
which the crane is operating within its rated capacity:
• Green On = Crane’s rated capacity is at a safe level.
• Amber Flashing On-Off = Crane’s rated capacity is
approaching the maximum level.
• Red Flashing On-Off = Crane’s rated capacity has been
exceed.
The warning light colors correspond to the color shown in the
rated capacity bar or triangle in the RCL/RCI display.
UPPERWORKS BUBBLE LEVEL
The bubble level (Figure 3-2) is mounted on the left side of
the rotating bed and is visible from the right cab window.
The level indicates crane levelness, as follows:
• The crane is level when the bubble is centered in the
circle.
• The crane is one degree out of level when the bubble is
touching the outside edge of the circle.
WARNING
Overload Hazard
Use the boom angle indicator only as a guide to position
the boom near the angle corresponding to the radius for a
given load.
In all cases, the radius shall govern the capacity.
Exceeding the radius given in the capacity chart can
result in tipping or structural damage.
Figure 3-1. Boom Angle Indicator
WARNING
Crane Tipping Hazard
Unless otherwise specified in the capacity chart, perform
all crane operations with the crane level to within one
percent of grade (0.5°) in all directions—1 ft in 100 ft (0.3
m in 30 m); otherwise, the crane could tip.
Figure 3-2. Bubble Level
Bubble shown approximately
one-half degree out of level
To Next Page
Loading...
