SAFETY INFORMATION 5540F/YB5515 OPERATOR’S MANUAL
2-6 Published 10-21-2011, Control # 055-03
Carefully follow the procedures in this Operator’s Manual
when extending or retracting the outriggers. Death or serious
injury could result from improper crane setup on outriggers.
The operator must select the proper Load Chart and Load
Moment Indicating (LMI) System program for the outrigger
position selected.
Before swinging the superstructure over the side when the
outriggers are retracted, check the Load Chart for backwards
stability.
Long cantilever booms can create a tipping condition when
in an extended and lowered position. Retract the boom
proportionally with reference to the capacity of the applicable
Load Chart.
Check crane stability before lifting loads. Ensure the
outriggers (or tires if lifting on rubber) are firmly positioned on
solid surfaces. Ensure the crane is level, brakes are set, and
the load is properly rigged and attached to the hook. Check
the Load Chart against the weight of the load. Lift the load
slightly off the ground and recheck the stability before
proceeding with the lift. Determine the weight of the load
before you attempt the lift.
Unless lifting within On Rubber capacities, outrigger beams
and jack cylinders (plus center front stabilizer, if equipped)
must be properly extended and set to provide precise
leveling of the crane. Tires must be clear of the ground
before lifting on outriggers.
KEEP THE BOOM SHORT. Swinging loads with a long line
can create an unstable condition and possible structural
failure of the boom.
Load Charts
Load Charts represent the absolute maximum allowable
loads, which are based on either tipping or structural
limitations of the crane under specific conditions. Knowing
the precise load radius, boom length, and boom angle
should be a part of your routine planning and operation.
Actual loads, including necessary allowances, should be
kept below the capacity shown on the applicable Load Chart.
Load Chart capacities are based on freely suspended loads.
You must use the appropriate Load Chart when determining
the capability of the crane in the configuration required to
perform the lift.
Maximum lifting capacity is available at the shortest radius,
minimum boom length, and highest boom angle.
Do not remove the Load Charts from the crane.
Work Site
Prior to any operation, you must inspect the entire work site,
including ground conditions, where the crane will travel and
operate. Be sure that the surfaces will support a load greater
than the crane’s weight and maximum capacity.
Be aware of all conditions that could adversely affect the
stability of the crane.
Wind Forces
Wind can have a significant affect on loads that may be lifted
by a crane. Wind forces act differently on a crane depending
upon the direction from which the wind is blowing (e.g., wind
on the rear of the boom can result in decreased forward
stability, wind on the underside of the boom can result in
decreased backward stability, wind on the side of the boom
can result in structural damages, etc.). To assist you in
determining prevailing wind conditions, refer to Table 2-1.
Wind forces can exert extreme dynamic loads. Manitowoc
recommends that a lift not be made if the wind can cause
a loss of control in handling the load. Manitowoc
recommends that, if the wind speed (velocity) is between 20
mph (32 km/h) to 30 mph (48 km/h), the load capacities shall
be reduced to account for the size and shape of the load and
the wind direction in relation to the machine for all boom and
boom extension lengths. Further, operation of the crane in
wind velocities over 30 mph (48 km/h) is not recommended.
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