Thiele TWN 1852/1 Operating Instructions

OPERATING INSTRUCTIONS
RAPID-SHORTENING CLAWS TWN 1852/1
GRADE 10
Original in the sense of 2006/42/EC
1. DESCRIPTION AND INTENDED USE
THIELE RAPID shortening claws according to TWN 1852/1 (TWN = THIELE factory
standard) are intended for shortening individual chain legs of chain slings of grade 10
according to EN 818-4 or lashing chains according to EN 12195.
Due to the two identical claws, each with a safety latch, they can be quickly and
universally integrated into existing chain legs. Alternatively, the enclosed dowel pin can
be used to mount the shortening claw for permanently fixed positioning within a chain
leg. #
The RAPID shortening claws meet EC Machinery Directive 2006/42/EC requirements
and feature a safety factor of at least 4 based on working load limit (WLL).
They are marked with the related nominal size, grade 10, manufacturer's mark, CE
#
mark and traceability code.
The RAPID shortening claws are designed to withstand 20 000 dynamic load changes
under maximum load conditions. In the event of higher loads (e.g. multi-
shift/automatic operation) the working load limit must be reduced.
Shortening claws must exclusively be used
• within the limits of their permissible working load limit,
• for permissible attachment modes and inclination angles,
• within the temperature limits prescribed,
• by trained and authorized persons.
If RAPID shortening claws were exclusively used as parts of lashing chains, the
maximum lashing capacity (LC) is calculated by doubling the working load limit to
LC = 2 x WLL. #
Alternate use for lifting and lashing is only permitted up to the load corresponding to
the working load limit (WLL), i.e. LC = WLL!
Even a single lashing load above the working load limit (LC > WLL) makes the further
use for lifting impermissible. #
As a rule, shortening claws are not permitted for the transportation of persons.
2. SAFETY NOTES
Risk of Injury!
Never walk or stay under lifted loads!
Make sure to use hoisting/attachment
means free from defects.
• Operators, fitters, and maintenance personnel must in particular observe the
operating instructions also from the used chain sling, documentations DGUV V 1,
DGUV R 109-017, DGUV I 209-013 and DGUV I 209-021 issued by the German Social
Accident Insurance (DGUV), as well as the standard specifications DIN 685-5 and EN
818-4. #
• In the Federal Republic of Germany, the operational safety ordinance (BetrSichV) has
to be implemented and the technical rule for industrial safety TRBS 1201, in
particular Annex 1, Chapter 2 "Special regulations for the use of working equipment
for lifting loads" must be observed.
• Outside the Federal Republic of Germany the specific provisions issued locally in the
country where the items are used must also be observed.
• The directions given in these operating instructions and specified documentations
relating to safety, assembly, operation, inspection, and maintenance must be made
available to the respective persons.
• Make sure these operating instructions are available in a place near the product
during the time the equipment is used. Please contact the manufacturer if
replacements are needed. See also chapter 12.
• When performing work make sure to wear your personal protective equipment!
• Improper assembly and use may cause personal injury and/or damage to property.
• Assembly and removal as well as inspection and maintenance must exclusively be
carried out by skilled and authorized persons.
• 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 put to use worn-out, bent or damaged shortening claws.
• Never expose shortening claws to loads exceeding the specified Working Load Limits.
• Do not use force when mounting/positioning the shortening claws.
• Do not twist or knot the chains together.
THIELE GmbH & Co. KG
www.thiele.de | info@thiele.de
© All rights reserved
#
#
• Never guide shortening claws over edges or load them sideways.
• Avoid sharp edges. Use edge protectors or reduce the WLL by 20 %.
• In case of multi-leg sling chain assemblies never allow for inclination angles of less
than 15 ° and in excess of 60 °.
• Avoid bending loads to act on chain links and components.
• Do not start lifting before you have made sure the load has been correctly attached.
• Make sure no one including you (operator) is in the way of the moving load (hazard
area).
• During lifting/hoisting make sure your hands or other body parts do not come into
contact with hoisting means. Only remove hoisting means manually (use your
hands).
• Avoid impacts, e.g. due to abruptly lifting loads with chain in slack condition.
• Never move a suspended load over persons.
• Never cause suspended loads to swing.
• Always monitor a suspended load.
• Put the load only down in flat places/sites where it can be safely deposited.
• Avoid parts of the sling chain assembly to get caught under the load.
• Operation without functioning safety devices (dowel pins, springs, safety latches) is
not permitted.
• The shortened part of the chain legs must not be loaded and not used as an endless
chain.
• Shortening claws must be able to align themselves freely in the loading direction.
• Take care for sufficient place for the personnel to move when choosing the route of
transportation and storage location. Danger to life and risk of injury by crushing
hazards.
• In the event of doubts about the use, inspection, maintenance or similar things
contact your safety officer or the manufacturer.
THIELE will not be responsible for damage caused through non-observance of the
instructions, rules, standards and notes indicated!
As regards quality grade 10 THIELE does not give its general approval to the assembly
of components stemming from different manufacturers!
Working under the influence of drugs and alcohol (including residual alcohol) as well
as medicines that impair the senses is strictly prohibited!
3. COMMISSIONING
Prior to using the components for the first time make sure that
• the components comply with the order and have not been damaged,
• test certificate, statement of compliance and operating instructions are at hand,
• markings correspond with what is specified in the documentation,
• inspection deadlines and the qualified persons for examinations are determined,
• visibility and functional testing are carried out and documented,
• the documentation is safely kept in an orderly manner.
Dispose of the packing in an environmentally compatible way according to local rules.
B07248-E
EN 01.2025
#
# Change indicator
replaces B07248-D
1 | 3