Manitowoc GROVE GMK5150L, Operating Manual

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Rigging work
12.9 Rigging/unrigging the counterweight
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GMK5150L
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12.9.7
Assembling counterweight combination
G
Danger of overturning when slewing with a rigged counterweight
You may only slew the superstructure with a rigged counterweight if an
outrigger span of sufficient size is rigged. You can find the required outrig-
ger span in the table in the section titled
Slewing with rigged counterweight
,
p. 12 - 113 and support the truck crane accordingly before slewing the
superstructure. This prevents the truck crane overturning when slewing.
G
Risk of accidents
Combine the counterweights with each other only in the way prescribed in
this chapter and in the
Lifting capacity table
. Other combinations are not
permitted.
If other versions are assembled, the truck crane is no longer protected
against overloading by the RCL.
G
Risk of crushing when setting down the counterweight sections
Make sure the helpers keep a sufficient distance away from the counter-
weight sections with any parts of their body when setting down the coun-
terweight sections.
Remove all objects from the counterweight platform that could become
jammed or crushed!
G
Risk of crushing when slewing the superstructure
The access ladders are located in the slewing range of the superstructure.
Make sure nobody uses the access ladders (helpers for example) whilst you
are lifting a section on to the counterweight platform.
G
Risk of accidents due to falling counterweight sections
Only attach the counterweight sections to the appropriate slinging points
and use lifting gear of sufficient load bearing capacity.