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IMPORTANT
WARNINGS
Failure
to follow warnings and instructions can result in serious
injury or death.
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| Refer
to warnings on pages 3 and 4. |
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These
warnings also apply chain and chain assemblies. Only additional
warnings and information are listed below.
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| Never
exceed the Working Load Limit of the chain. |
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The Working
Load Limit is the maximum load that should ever be applied
to the chain, even when new and when the load is uniformly
applied. Working Load Limit applies only to straight line
pulls. When using multiple leg chain slings, the Working Load
Limit of each leg will have to be reduced considerably depending
on the angle of the sling legs. See page 5 for further discussion.
Consult industry recommendations for information, such as
ASME B 30.9.
When in
doubt as to the Working Load Limit of the chain, refer to
the periodic, permanently embossed grade marking on chain
links. Proof Coil Chain is identified by P.C. or 30 or 3 or
28; HighTest Chain by H.T. or 43 or 40 or 4; Transportation
Chain by 70 or 7; Alloy Chain by 80 or 8 or 800.
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| Use
only alloy chain for overhead lifting. |
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Grade
80 alloy chain is the only type of chain which can be
used for overhead lifting. Use only grade 80 alloy fittings
for overhead lifting.
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| Attachments
must have at least the same Working Load Limit as the chain used.
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Hooks, links,
shackles, etc. must be of suitable material and strength to
provide adequate safety protection.
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| Keep
out from under a raised load. |
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Do
not move load over people. Do not ride on load. Conduct all
lifting operations in such a manner that if equipment were to
fail or break, no personnel would be injured. This means KEEP
OUT FROM UNDER A RAISED LOAD, DO NOT OPERATE LOADS OVER PEOPLE
AND KEEP OUT OF THE LINE OF FORCE.
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Avoid
impacting, jerking or swinging of load. Working Load Limit will
not apply in these circumstances because a shock load is
generally significantly
greater than the static load.
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| Inspect
chain frequently. |
No product
can keep operating at its rated capacity indefinitely. Closely
examine each link for deformation, cracks, elongation, corrosion,rust,
etc. Take chain out of service even if only one bad link is
found. Eliminate twists and kinks in chain before using. Do
not attempt to repair damaged or worn links in a chain. Do
not attempt to weld, anneal, heat treat or hot galvanize alloy
chain - its capacity will be completely destroyed. Protect
chain from corrosion.
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| Destroy,
rather than discard, chain that is judged to be defective. |
Chain that
is not destroyed might be used again by someone not aware of
the hazard associated with that use. Destroying chain is best
done by cutting it up into short pieces.
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Only grade
80 alloy chain can be used for overhead lifting.
Refer to
OSHA standard 1910.184 and ASME standard B30.9 for design
factors and other important information. Other standards and
information may apply depending on specific use.
Consult the
sources listed on page 73 for additional information.
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