Manitowoc MLC300 User Manual

Manitowoc Published 11-20-19, Control # 234-19 2-27
MLC300 OPERATOR MANUAL SAFETY INFORMATION
3
1
2
3. RINGER
®
(crawler mounted, carbody mounted)
supported on blocking, screw jacks, or steel pedestals
which are braced and fastened to the foundation in such
a manner as to prevent movement (Figure 2-10
).
NOTE RINGERS must be equipped with hook rollers on
the boom carrier and the counterweight carrier.
4. RINGER (platform mounted) which has the ring braced
and fastened directly to the foundation in such a manner
as to prevent movement.
Capacity Charts for Barge Mounted Crane
Manitowoc provides two types of Capacity Charts for a crane
mounted on a barge or other supporting structure under
static conditions.
1. A Capacity Chart based on tipping when the crane is
anchored only to prevent shifting.
2. A Capacity Chart based on structural competence when
the crane is securely fastened for use as a pedestal
mounted crane.
NOTE Unless otherwise specified in a machine list
Capacity Chart, a 0 degree machine list Capacity
Chart rating applies to machine list not to exceed
1/2 degree. All other machine list ratings – 1°, 2°,
and 3° – must NOT be exceeded.
Shock Loading Caused by Barge Dynamics
Shock loads to the crane can be experienced when the
barge is subjected to up and down movement of wave action
(referred to as DYNAMICS). Figure 2-11
illustrates the
dynamic conditions of the barge which influence crane
capacity.
NOTE Manitowoc does not recommend crane operation
under dynamic conditions.
Operation on Barge
Machine list and/or dynamics will be experienced when a
crane is operated on a barge, ship, or floating platform. Both
of these conditions reduce the crane’s capacity and each
must be taken into account for safe operation on a barge,
ship, or floating platform.
Figure 2-10. RINGER-Mounted-Crane
Item Description
1Bracing
2 Ring Support
3 Ring Assembly
4 Foundation
Figure 2-11. Barge Dynamics
AXIS TRANSITIONAL ROTATIONAL
SYMBOL NAME STATIC DYNAMIC STATIC DYNAMIC
X Longitudinal Surge Heel List Roll
Y Vertical Heave Yaw
Z Lateral Sway Trim Pitch
CAUTION
Structural Damage Hazard!
If the crane’s boom or structure is shock loaded during
operation, or there is any indication of shock loading, all
structural components of the crane must be inspected to
detect cracks and other damage. Nondestructive test
equipment, such as magnetic particle or ultrasonic
procedures, is recommended for this inspection.

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English