b
16
4.3 Before every use
– Carry out a visual examination for damages: Damaged SpanSet round
slings and bridles can be repaired as required (see
5
Maintenance).
Irreparable SpanSet round slings and bridles should not be used and
must be immediately removed.
– Visual examination for soiling or the effects of acids or alkaline solu-
tions or other chemical agents or substances: Clean SpanSet round
slings or bridles that have been soiled or affected by chemical agents
or substances.
– Check for moisture or wetness: Damp or wet SpanSet round slings
or bridles must be dried in a ventilated room before use (see
5.1
Cleaning).
– Any existing metallic components must be checked for compliance
with state regulations at regular intervals and using suitable tools.
4.4 Use
4.4.1 Choosing suitable SpanSet round slings or bridles
Make a selection based on the following criteria:
– Weight of the load. Determine the weight by weighing or calculation.
– Centre of gravity for the load. Take the centre of gravity from the
construction documents or calculate it.
– Length and tilt angle. Determine this by positioning the crane hook
vertically above the load.
– Use a traverse if SpanSet round slings or bridles are to be used in
pairs. This distributes the load equally across the legs
V
(see cover).
– Decide on a slinging method
I
II
III
IV
(see cover):
The slinging method influences nominal load capacity. Change in load
capacity is represented by mode factor (M). The nominal load capacity
for the slinging method “straight pull” is given. Mode factors (M) for
other slinging methods can be found in these instructions, amongst other
sources
I
II
III
IV
(see cover).
– Consider the geometry and surface condition of the load.
I
Common slinging methods for a SpanSet round sling (does not
apply to bridles):
1. pull,
