SAFETY INFORMATION 2250 OPERATOR MANUAL
2-12
Published 06-24-16, Control # 241-01
• Before lifting a load that requires the use of outriggers
(or anytime outriggers are used), fully extend the
outrigger beams and jacks so the truck tires do not bear
any load.
Securely fasten the outrigger jack pads or floats to jacks
and set them on a flat, firm surface that will support the
load placed on the pads or floats. Do not set the jack
pads or floats in holes, on rocky ground, or on extremely
soft ground.
When dictated by ground conditions, install wood
blocking or steel plates under the jack pads or floats to
properly distribute the loading on the supporting surface.
Wood blocking or steel plates used under the jack pads
or floats must be:
- Free of defects
- Strong enough to prevent crushing, bending, or
shear failure
- Of sufficient thickness, width, and length to
completely support the jack pad or float, transmit the
load to the supporting surface, and prevent shifting,
toppling, or excessive settlement under load
• Fully retract and lock the jacks and the outrigger beams
so they cannot extend when not in use.
• Operate with extreme caution when using two or more
cranes to lift the same load.
One designated person shall be responsible for
operation when two or more cranes are used to lift the
same load. The designated person shall analyze the lift
and instruct all personnel involved in proper rigging and
positioning of the load and in all movements to be made.
Decisions such as the necessity to reduce crane ratings,
load position, boom position, ground support, and speed
of movement must be in accordance with the designated
person’s decision.
• Do not lower the load or the boom to a point where less
than three full wraps of wire rope are remaining on the
respective drum (or as otherwise indicated in local,
state, or federal regulations).
• Engage the boom hoist pawl when operating with the
boom at a fixed radius.
• Engage the luffing hoist pawl when operating with the
luffing jib at a fixed radius.
While traveling, the operator shall take the following
precautions:
• Sound the signal horn before traveling and intermittently
while traveling, especially when approaching personnel.
• If equipped, the automatic travel alarm will sound when
the crane is traveled.
• Carry the boom in line with the lowerworks and facing
the direction of travel.
• Do not position the boom so high that it could bounce
over backward whether traveling with or without load.
• Secure the rotating bed against rotation except:
- When operating with a MAX-ER attachment
- When it is necessary to negotiate a turn, and then
only when the operator is seated at controls or the
boom is supported on a dolly
- Lash or otherwise restrain unused hooks so they
cannot swing freely
Before traveling with a load, the operator should be aware of
these additional precautions:
• A designated person shall be responsible for operation.
Decisions such as the necessity to reduce crane ratings,
load position, boom position, ground support, and speed
of movement must be in accordance with the designated
person’s decision.
• Maintain specified tire pressures (truck cranes).
• Avoid sudden starts and stops. Use taglines or other
restraints to control the position of the load.
Multiple-Load-Line Operation
Multiple-load-line operation is becoming common practice
for applications like panel tilt-up, pile tilt-up, pile driving, and
rolling fabricated sections. The multiple lines may be on a
common shaft (each with different parts of line) or on multiple
shafts (for example, lower boom point and upper point, boom
point and fixed jib point).
Manitowoc Cranes authorizes multiple-load-line operation
for those applications requiring it, provided the following
steps are performed:
• The qualified lift planner and the crane operator shall
read and become familiar with the appropriate capacity
charts and wire rope specification charts.
• The lift planner and the crane operator shall make sure
the total load does not exceed the rated capacity given in
WARNING
Overload Hazard
Prevent Possible Injury, and Crane Damage! Avoid
overload and side load to crane
Manitowoc Cranes highly recommends that you contact
your Manitowoc Cranes dealer for lift planning assistance
and approval.
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