pewag Winner pro G12 Originalbetriebsanleitung Seite 28

protection. The criteria along with the associated reduction factor can be found in the table below.
The permissible load capacity of the chain sling in this case arises from multiplying the load capacity on the tag with
the corresponding reduction factor.
Reduction Factors
The maximum permissible load capacity of the chain sling arises from multiplying the load capacity on the tag with
all the corresponding reduction factors in this table.
Reduction Factors
Temperature
Asymmetrical Load
Distribution
E
Shocks/Impacts
Reduction factor
Edge load*
Reduction factor
d* = diameter of chain
Not utilising all chain strands: In praxis, lifting situations arise where not all chain strands of a multi-leg lifting
chain will be used simultaneously or situations where more than one lifting chain will be used at the same time.
The marking on the tag in these instances is not applicable. The permissible load weight should be taken from the
load capacity table subject to the chain dimension, the number of strands in use and the quality grade. Under no
circumstance should the load capacity of the lifting chain exceed the markings on the tag!
Single strands that are not being used should be mounted onto the master link so as to minimise the dangers of
free swinging or unintentional latching onto an object or person.
Before using several lifting chains together, one should make sure that all master links have enough space in the
hook and will not unhook themselves during the lifting process. An angle of inclination of more than 45° should not
occur. Only lifting chains of the same nominal size and quality grade should be used simultaneously; otherwise the
smallest nominal size needs to be used to determine the maximum permissible weight that can be lifted.
High-risk conditions: This instruction manual assumes that the lifting chains are being used in low-risk situations.
High-risk conditions are classified as offshore-operations, lifting of people or potentially dangerous loads such as liquid
metals or nuclear materials. In such cases, the permissibility and the degree of risks should be clarified with pewag.
Handling Errors
Amending the as-received condition: a change in the as-received condition is not permissible; in particular,
pewag's lifting chains should not be welded or exposed to heat over the maximum permissible temperature –
see "Temperatures" in the corresponding tables.
The shape of the lifting chain should not be changed by bending, grinding, cutting off pieces, drilling holes etc.
For the user's safety, safety aspects such as locking devices, safety mechanisms (pins or sleeves), safety catches
etc. should not be removed.
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See reduction factors in the respective programmes
The load capacity should be reduced by minimum 1 chain strand, e.g. III or IV- leg
chains are classified as II-strands. In cases of doubt, assume that only one strand is
supporting the weight
slight shocks
arise from e.g. acceleration
when lifting or lowering
1
R = larger than 2 x d*
1
medium shocks
arise from e.g. the lifting
chain shifting after fixation
around the shape of the load
0,7
R = larger than d*
0,7
strong shocks
arise when e.g. the load
falls into an unloaded
lifting chain
not permissible
R = smaller than d*
0,5