Manitowoc MLC300 User Manual

OPERATING CONTROLS AND PROCEDURES MLC300 OPERATOR MANUAL
3-30
Published 11-20-19, Control # 234-19
Other Operator Aids
Boom Angle Indicator
The boom angle indicator (Figure 3-2), located on the boom
butt, shows the angle of the boom in degrees above
horizontal.
NOTE The boom, luffing jib, and mast angles can be viewed
in the RCL/RCI Display or in the Main Display.
Crane Capacity Beacons
The purpose of the crane capacity beacons is to alert
personnel in the vicinity of the crane of the degree to which
the crane is operating within its rated capacity:
• Green Beacon ON = Crane’s rated capacity is at a safe
level.
• Amber Beacon ON = Crane’s rated capacity is
approaching the maximum level.
• Red Beacon ON = Crane’s rated capacity has been
exceeded.
The signal beacons correspond to the color shown in the
rated capacity bar or triangle in the RCL/RCI Display in the
crane cab.
Upperworks Level
Either a 2-way level or a circular level is located on the cab
support. Both levels indicated crane levelness from front-to-
rear and from side-to-side.
A level is also provided on the front of the carbody for use
during crane setup.
The 2-way level (Figure 3-3
) indicates crane levelness from
front-to-rear (2) and from side-to-side (3).
• The crane is level when the bubbles (1) are centered in
the glass.
• The crane is approximately one percent of grade out of
level in the corresponding direction when half of a
bubble (1) is off center.
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 3-2. Boom Angle Indicator
WARNING
Crane Tipping Hazard
Unless otherwise specified on the capacity chart, perform
all crane operations with the crane level to within one
percent of grade in all directions— 0,3 m in 30 m (1 ft in
100 ft); otherwise, the crane could tip.
Figure 3-3. 2-Way Level

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English