Testing the Chain Hoist
EKZT-Series | Version 1.03
17
Checking the load chain for wear
Continuous monitoring of the load chain is a mandatory
requirement in accordance with DIN 685 Part 5 or UVV
BGV D8 § 27 (VBG 8 § 27). The load chain must be
checked after commissioning and under normal opera-
ting conditions after approx. 200 operating hours or
10,000 load cycles, and at shorter intervals in case of se-
vere operating conditions.
The links should be checked especially at the points of
contact for wear, cracking, deformation and other da-
mage.
The chain is to be renewed at:
- Reduction of the nominal thickness at the points of
contact by 10% or, if worn to the limit value in the
table Fig. 5.
- Elongation of a limb by 10% or of the chain over 11
limbs by 4% or, when stretched to the limit value in
the table Fig. 5.
- rigid-drawn chain links
When changing the chain, check the chain guide and re-
place if necessary.
Fig. 11: Repeat cuts
Wear measurement and renewal of the load hook
* Nominal values. The concrete value must be measured by the new
hook. The expansion may not be more than 5% of the extent of the
new condition.
9 Testing the Chain Hoist
The electric chain hoist can be used after: UVV
"Winches, lifting and pulling equipment" BGV D8 (VBG
8), UVV "Cranes" BGV D6 (VBG 9)
testing in compliance with BGV D8 Section 23 (VBG 8
Section 23) by a specialist before commissioning and
following major changes
testing in compliance with BGV D6 Section 25 (VBG 9
Section 25) by an authorised expert before commission-
ing and following any major changes.
annual repeat testing of equipment, crane and support-
ing structures by a specialist. Where equipment is sub-
ject to heavy operational conditions (e.g. frequent oper-
ation with a full load, dusty or aggressive environment,
frequent stopping, long operation time) the testing inter-
vals should be reduced.
- With regard to testing cranes, experts are exclu-si-
vely TÜV experts or experts authorised by pro-fes-
sional bodies or associations.
- Specialists are customer service installers em-
ployed by the manufacturer or specially trained
specialist personnel.
Evidence of chain hoist testing should be kept in an in-
spection log book.
Testing is generally a visual and functional test. It in-clu-
des an inspection of the condition of the components
and equipment, the completeness and functionality of
the safety equipment and the completeness of the log
book.
ACHTUNG!DANGER
As spare chain use only original spare chain from the
manufacturer of the hoist.
D=(d1+d2)/2 [mm]
L [mm]
Default
Limit
Default
Limit
0,5t
6,3
5,7
210,0
217,4
1 t
8,0
7,2
265,3
274,6
2 t
8,0
7,2
265,3
274,6
A*[m
m]
B [mm]
C [mm]
Default
Limit
Default
Limit
0,5 t
30
18
17,1
21,0
20,0
1 t
37
20
19,0
24,0
22,8
2 t
45
26
24,7
42,0
39,9
DANGER!
Only use original parts from the manufacturer of the
hoist as a replacement.
