Tadano ATF 130G-5, Translation Of The Original Operating Manual

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3.11 Crane operation with load
WARNING
Operating the crane without familiarizing adequately with mobile crane!
Incorrect operations may cause accidents that may lead to material
damage and/or personal injuries.
1. The crane operator may work on the superstructure only after read‐
ing the previous chapters and after familiarizing himself/herself with
the operating elements, safety instructions and warning devices.
2. The operator must especially observe all the following notes regard‐
ing different operating states and the "Notes regarding lifting capaci‐
ty charts".
3. The mobile crane must be checked for its operational safety before
every crane operation.
4. Observe the safety instructions.
3.11.1 Influence of the temperature difference in case of heating of the boom due to
solar radiation
WARNING
Boom overloaded!
The mobile crane may become unstable and overturn.
1. If the maximum angular load on the long telescopic boom or the jib
is to be utilized completely, the lateral deformation of the boom must
be checked visually before lifting the load.
In case of long-term solar radiation acting on one side of the telescopic boom, there is a tempera‐
ture difference between the sun-side and the shadow-side of the boom. This temperature differ‐
ence between the two sides of the boom leads to bending or lateral deformation of the boom owing
to different thermal expansions.
A lateral deformation, if any, caused due to solar radiation may lead to the failure of the boom ow‐
ing to the developed stresses.
Before lifting the load, the mobile crane must therefore be turned towards the sun such that both
sides of the boom have approximately the same temperature to ensure that there is no lateral de‐
formation owing to a temperature difference.
3 Operation
412
ATF 130G-5 2146097
2014-09