OPERATING INSTRUCTIONS
HOIST CHAINS
THIELE GmbH & Co. KG
# Change indicator
www.thiele.de | [email protected]
B08285-D
replaces B08285-C
© All rights reserved
EN 04.2022
2 | 3
4
TECHNICAL DATA
Data concerning working load limit and article numbers for spare parts ordering
are shown in the pertinent test/inspection certificate.
5
ASSEMBLY AND DISASSEMBLY
5.1
Preparations
Ensure that all components to be installed are in perfect condition and that the
Working Load Limits of all components are designed for the load.
5.2
Assembly and disassembly
When mounting or removing hoist chains the relevant instructions issued for the
components are to be observed, especially those issued for chain hoists and crane
equipment.
Take care of an assembly of chain with connected parts that there is enough
clearance and no deformation occurs to the chain.
The operating instructions of the chain hoists may give hints for the mounting
orientation of the chain (orientation of the welded areas).
Ensure sufficient lubrication BEFORE applying a load for the first time.
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6
CONDITIONS OF USE
6.1
Lubrication
To achieve a long service life, hoist chains must be carefully lubricated and
lubrication must be ensured in all joining areas of all links. The lack of lubrication
of a chain link can lead to premature wear and tear and the necessary replacement
of the entire hoist chain.
In particular, the chain links which are particularly stressed by recurring starting
positions require permanent lubrication and regular relubrication.
The choice of lubricant depends on the operating and environmental conditions.
Appropriate lubricant specifications can usually be found in the chain hoist
operating instructions.
Recommendations can be requested from THIELE.
6.2
Influence of temperature
The temperature ranges for use are shown in the following table.
Once the hoist chains have been heated above the maximum operating
temperature, they must no longer be used.
6.3
Environmental influence
Hoist chains must not be used in environments where acids, aggressive or
corrosive chemicals or their fumes are present.
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Hoist chains must not be exposed to pollution that obstructs the free movement
of the individual links.
6.4
Miscellaneous
Hoist chains may never be turned and have to run straight line on the wheels and
supported by guiding devices. A twisted hook block causes a non allowed chain
twisting.
7
INSPECTIONS, MAINTENANCE, DISPOSAL
7.1
Inspections
Inspections and maintenance must be arranged for by the owner!
Inspection deadlines shall be determined by the owner!
Check the hoist chains visually at regular intervals. Visual inspections must focus
on the entire length of the chains and also include the concealed inside of the link
crowns.
The inspections shall be documented in the respective inspection logs in
conjunction with the chain hoists.
An inspection must be performed at minimum once a year or more often if the
chains are in heavy-duty service (e.g. multi-shift or automatic operation, recurring
hoisting positions, corrosive environment etc.).
When designing a hoist chain according to EN 818-7 and operating it as intended,
fatigue cracks are not to be expected. Under these conditions, a crack test that is
not explicitly excluded in DIN 685-5:2020 does not need to be carried out.
Nevertheless, an additional check for cracks offers increased security, especially if
cross-border conditions cannot be completely excluded during use. As no fatigue
strength certification is required for hoist chains of type T according to EN 818 7,
THIELE recommends crack testing of these chains if they are installed in motor-
driven hoists with higher speeds (e.g. repair hoists in wind turbines).
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Immediately stop using chain hoists if their hoist chains show the following
defects:
•
deformation/elongation (even if only individual chain links are concerned),
•
cuts, notches, cracks, incipient cracks, pinching,
•
chains heated beyond permissible limits,
•
severe corrosion,
•
Reduction by more than 10% of the average chain link thickness (Calculate the
average of two perpendicular diameter measurements of the most stressed
areas. These areas are usually located where individual chain links come to a
standstill at the intake to the drive and return sprockets due to recurring drive
positions.)
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,
•
pitch enlargement of single chain links by more than 5 %,
•
pitch enlargement over 11 links by more than 2 % for motor- or more than 3 %
for hand-operated chain hoists,
•
identification marks are unreadable.
If there is no significant damage or wear on the sprockets, used sprockets with
new hoist chains can also be used.
7.2
Inspection service
THIELE offers inspection, maintenance and repair services by trained and
competent personnel.
7.3
Maintenance
Maintenance and repair work must only be performed by competent persons!
Only use THIELE spare parts. Replace without delay any hoist chains that show
signs of damage.
Do not repair hoist chains, instead replace complete chain legs only.
Document all maintenance measures.
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7.4
Disposal
All components and accessories of steel taken out of service are to be scrapped in
line with local regulations and provisions.
8
STORAGE
Make sure hoist chains are stored in dry locations at temperatures ranging
between 0 °C and +40 °C.
Type
Operating temperature range
T
-40 °C ≤ t ≤ +200 °C
DAT
-20 °C ≤ t ≤ +200 °C
DT
-10 °C ≤ t ≤ +200 °C
