Operation; Requirements For The Placement Area; Determining The Centre Of Gravity And Positioning The Transport Trolley And Lifter - Jung JKB Serie Betriebsanleitung

4. Operation

Before operating the trolleys, the operating staff (that
is, all persons who are responsible for performing lif-
ting and transport work) must read this entire manual.
All instructions related to lifting also apply analogously
to lowering of a load.

4.1 Requirements for the placement area

The trolley must be placed on a flat, clean, horizontal,
sufficiently load-bearing and non-slip surface. The
trolley must stand securely when the goods to be
transported are loaded.
The transport load must be statically rigid and tilt-
resistant. The surface that is placed on the trolley
must be suitable for this purpose. In particular, ensure
sufficient size, compressive strength, stability and slip
safety.
The total weight of the transport load and the position
of the centre of gravity must be determined before
lifting and moving. Therefore the centre of gravity must
first be determined (see next chapter).
DANGER
Before a revolving transport / multi-purpose trolley is
used on the load to be lifted, the centre of gravity of
the load to be lifted must be determined. Otherwise,
tipping or slipping can lead to injuries or even to fatal
accidents. Always determine the centre of gravity
before using JUNG revolving transport / multi-purpose
trolleys.
© JUNG Hebe- und Transporttechnik GmbH
JKB revolving transport trolleys / JLF multi-purpose trolleys
4.1.1 Determining the centre of gravity and
positioning the transport trolley and lifter
DANGER
Before a jack is used on the load to be lifted, the
centre of gravity of the load to be lifted must be
determined. Otherwise, tipping or slipping can lead to
injuries or even to fatal accidents. Always determine
the centre of gravity before using JUNG jacks.
The centre of gravity must always be determined before
using a JUNG revolving transport / multi-purpose trol-
ley for the transport load. For this purpose, the entire
weight of the transport load must be determined before
the start of the lifting process.
The following formula can be used for the selection
of the appropriate jack with a sufficient load-bearing
capacity:
Minimum load of the jack = (the load to be
lifted in kg) x (safety factor of 1.25)
Example:
Weight of load 4000 kg x 1.25 = 5000 kg.
The jack must have a lifting capacity of 5000 kg.
WARNING
For safety reasons, using multiple jacks with different
load-bearing capacities is not permissible
If several jacks are used, all of which have the same
carrying capacity, they must be placed under the load
such that each jack is subjected to the same share of
the load to be lifted. For this purpose, the centre of
gravity must be determined in advance.
> For the determination of the centre of gravity by
means of JUNG jacks, the pressure gauge for jacks
(order no. 94 001 024-B) is necessary as an
additional accessory.
- 39 -