d&b xA-Series - Manual (Page 21)

Due to the various array configurations and on-site conditions an
applicable hoisting procedure is not possible in general.
Depending on the array configuration, system weight and on-site
conditions the persons hoisting the array must review the on-site
situation and decide an applicable hoisting procedure respectively.
In addition observe the following safety guidelines.
5.1. Safety guidelines
CAUTION!
Unpredictable dynamic forces and swing.
When hoisting the array, unpredictable dynamic forces as well as
swinging of the array must be taken into account. This may lead to
personal injury and/or damage to the rigging components and
loudspeaker cabinets.
Ensure that there is nobody directly underneath or in the vicinity of
the load who is not involved in the setup.
xA-Series arrays with a total system weight of up to 140 kg
(309 lb) may be lifted directly from their horizontal assembly
position (i.e. the arrays were assembled horizontally on the
ground).
– Before starting to hoist the array, make sure to prevent the
cabinets from scratching or other possible damage.
– Ensure the array's pickpoint is in line with the rigging point and
hoisting devices.
– When changing over from horizontal to vertical position,
observe the following (depending on the size (length) and
weight of the array):
– Two persons, one on each side of the array, should support
you to prevent unpredictable lateral tensile forces from
acting on the array.
– It is advisable that all persons involved in hoisting the array
are in close proximity so that you will be able to give
instructions, if necessary.
– When the array is about to leave the ground, make sure there
is enough support to prevent the array from unpredictable
movement and swinging.
– During the further hoisting procedure raise the array slowly
and evenly so that it does not swing or move from side to side.
5. Hoisting the array
d&b xA-Series, Rigging manual (1.1 EN) 21