Robur 8150 Manuel D'instructions page 24

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Whenever any slings are used as three-arm systems, if the arms are not symmetrically arranged in the
plane, tension will be higher in the arm with the largest sum of the plane angles compared to the
adjacent arms. The same result is achieved in four-arm slings; only the rigidity of the load should also
be considered. If the load is rigid, mass may mainly be supported by three or even two arms, the
remaining arms just performing a load balancing function.
9) USING ACCESSORY – GRIP AND HANDLING
Always pay attention to any specific warning when handling the load. Before operating the lifting
apparatus, make sure that the load is capable of freely moving and is not stopped by any connecting
parts or any other obstacles.
Before lifting any load, it is recommended that a test lift be carried out.
Pull the sling before lifting the load.
Keep your hands or any other parts of your body away if the sling has been pulled.
The load should be lifted slowly, making sure that it has been fixed firmly and takes the expected
position.
Move the load slowly, linearly and continuously, avoiding sudden acceleration or braking, which may
cause – through inertia – dangerous swinging.
Choose the place where to put down the load onto the ground beforehand, making sure that the ground
(or the floor) is capable of supporting the load.
Make sure that the place where the load is to be put down is free from obstacles and that everybody is
safely distant from it.
The load should be put down cautiously, being careful not to get the sling entangled; hence do not let
the sling be trapped under the load, while laying it on the floor.
Before loosening the sling, make sure that the load is suitably supported and firm.
Once the load has been put down safely, the sling should be removed by hand and should never be
moved away with the lifting apparatus, nor should it be dragged on the floor.
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