RUTHMANN 27409, Operating And Maintenance Instructions Manual

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3 Description of the
Ruthmann-Steiger
BA.GB.12-27409-05-07-FTA-jr
RUTHMANN-Steiger
®
TB270
3-13
3.3.9 Automatic levelling device
By means of a push button all jacks can horizontally or vertically be ex-
tended or retracted respectively at the same time. Due to specific re-
sistances within the hydraulic system and due to differences in friction of
the cylinders the extending speeds of the jacks can be different. The con-
trol trys during vertical extension of the stabilizing jacks to lift the Steiger
within the permissible siting inclination, as long as at least one jack is com-
pletely extended (automatic levelling device). When one stabilising jack has
been completely vertically extended, no automatic levelling of the jacks will
be carried out with regard to the permissible siting inclination. It is absolute-
ly necessary to check the inclination of the Steiger!
3.3.10 Automatic adjustment of the working cage and of the telescope
After switching on operation and triggering the „boom up“ movement the
first time, the working cage will be aligned automatically and the telescope
adjusted. For this, the boom has to be located in the boom rest (basic posi-
tion). Only after the adjusting is finished the „boom up“ movement triggered
will start up.
3.3.11 Soft starting and soft stopping of Steiger movements
For the following movements a soft starting or stopping respectively is pos-
sible due to the electrical control:

Jacks up or down,

Boom (lifting arm) up or down,

Boom rotation to the left or right,

Telescope in or out.