•The specific safety and operating regulations and standards
issued locally in the country where the items are used must
be observed.
•The directions given in these Mounting Instructions and
specified documentations relating to safety, assembly,
operation, inspection, and maintenance must be made
available to persons operating and using the master links.
•These Mounting Instructions must be available in a place
near the product during the time the equipment is used.
Please contact the manufacturer if replacements are
needed. Also see chapter 13.
•During operation work, wear your personal protective
equipment!
•Improper assembly and use may cause personal injury
and/or damage to property.
•Assembly and removal as well as inspections and
maintenance must exclusively be carried out by skilled,
qualified, trained and authorized persons only.
•Structural changes are impermissible (e.g. welding,
bending).
•Operators must carry out a visual inspection and, if
necessary, a functional test of the safety equipment
before each use.
•Never use worn-out, bent or damaged master links.
•Never expose master links or master link assemblies to
loads exceeding the specified Working Load Limit.
•Do not use force when mounting/positioning the master
links.
•Avoid bending loads to act on master links.
•Only lift loads that are freely movable and not attached or
fastened.
•Always monitor a suspended load.
•Master links must be allowed to move freely in all tensile
directions.
•Do not start lifting before you have made sure the load has
been correctly attached and balanced.
•No one including you (operator) must be in the way of the
moving load (hazard area).
•During lifting make sure your hands or other body parts do
not come into contact with lifting means. Only remove
lifting means manually (use your hands).
•Avoid impacts, e.g. due to abruptly lifting loads with chain
in slack condition.
•Usage of fixed size master link assemblies without working
safety elements (dowel pins) is not permissible.
•Put the load only down in flat places/sites where it can be
safely deposited.
•In the event of doubts or concerns about the proper and
safe use, inspection, maintenance or similar things contact
your safety officer or the manufacturer.
THIELE is not responsible for damage caused by non-
observance of the instructions, rules, standards and notes
indicated!
As regard grade 100, THIELE does not give its approval to the
assembly of components sourced from different
manufacturers!
As a rule, chain master links for 3- and 4-leg chain slings are
not permitted for the transportation of persons.
3. DESCRIPTION AND INTENDED USE
Master link assemblies and fixed size master link assemblies
are exclusively intended for the usage in chain sling assemblies
according to ASTM A 906/A 906M.
They are prevalently used as upper end fittings to connect the
sling chain assemblies to the crane hooks or are used as
bottom end fittings to be assembled together with shackles to
carry the load.
Fixed size master links have integrated ringshackles to easily
attach sling chains and therefore they are predestinated for
mounted sling chain assemblies.
These Mounting Instructions apply to following products:
•TWN 0797, TWN 1304, TWN 1315, TWN 1804, TWN 1815:
Master link assemblies for chains and wire ropes
•TWN 1817:
Oversized master link assemblies for crane hooks DIN15401
•TWN 0810/4, TWN 1810/4:
Fixed size master link assemblies type TAA
•TWN 0811/4:
Fixed size master link assemblies type TAB
Master link assemblies and fixed size master links must
exclusively be used
•within the limits of their permissible Working Load Limit,
•within the temperature limits prescribed,
•for permissible attachment methods and sling angles,
•by trained and authorized persons.
Failure to do so may cause serious injury or property damage.
