Residual Risks; Procedures For Accidents / Malfunctions; Spare Parts; Transport And Storage - Pfeifer GK 8 Manual Del Usuario

8. Residual risks

DANGER: First and foremost, residual risks
arise from ignoring this operating manual or
standard attachment techniques. Therefore
it is absolutely necessary that only trained
personnel evaluate and perform lifting
procedures. Overloading caused by
ignoring the maximum carrying capacity or
through non-reduced carrying capacity due
to temperature influence, asymmetry, edge
or joint load can also lead to failure of the
chain sling as does the use of the wrong
spare parts, exceeding the permissible
angle of inclination, severe oscillations in
the event of high load or the use untested
or twisted or knotted chains. This can lead
to failure of the chain sling and cause the
load to fall down, which involves direct or
indirect danger for limb or the health of
the persons who are in the danger area
of lifting devices.
When using four-leg chain slings to lift a rigid load the
greatest mass portion might be held only by three or
even two legs (cf. DGUV rule 100-500), the remaining
individual legs only stabilize the load. This is the case
when the chain legs have not been correctly shortened,
are not equal in length and / or the attachment points are
not arranged precisely (asymmetrical load distribution).
In this case there is also a risk of overloading or
breakage.
With increasing angle of inclination, along with the force
in the chain leg also the tensioning force of horizontal
force components on the load increases. This can lead
to damage / breakage of the load or the attachment
points.
When the centre of gravity of the load is above the
attachment points, the load can become unstable and
tip over. This risk increases further with angles of
inclination below 15° and when the load swings.
9. Procedures for acci-
dents / malfunctions
DANGER: After an accident or an
exceptional occurrence – e.g. accidents,
overheating, overloading, collision,
exposure to acids or chemicals – the chain
sling should be taken out of service. Make
certain that no damage can be caused to
the load or human beings by removal of the
chain sling, e.g. because the load was set
down in an unstable manner and could fall
over. If necessary, attach an additional
chain sling prior to removal. After that,
remove the chain and give it to a qualified
person for testing.

10. Spare parts

Spare parts may only be exchanged by qualified
persons with the necessary knowledge and skills. Only
PFEIFER spare parts may be used. Use only new bolts,
clamping sleeves and other safety elements. If you have
any questions, please consult PFEIFER Mobile Services
or have the repair done by one of the specialists from
PFEIFER.

11. Transport and storage

NOTICE: Any chain slings that are not in
use should be stored on a designated rack.
After use do not leave chain slings on the
ground, since they could be damaged. If
chain slings remain unloaded on the crane
hook, hook the end hook back in the
suspension link or the end rings in the
crane hook to prevent endangerment due to
free swinging or an unintentional hooking.
If the chain slings will not be used for a certain time,
store them cleaned, dried and protected from corrosion,
e.g. lightly oiled. After a long period of storage have the
chain sling checked by a qualified person prior to the
first commissioning if the prescribed testing interval has
been exceeded or the chain was not properly stored –
see also "Inspections and Maintenance".
Chain slings 11/2019 / Subject to change!
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