4-8
General safety and mounting instructions
WARNING!
WARNING!
WARNING!
Any wall, floor or ceiling to which a d&b loudspeaker is fixed or
attached using a d&b rigging accessory must be capable of safely
and securely supporting the actual load. The rigging accessory used
must be safely and securely fixed both to the loudspeaker and to
the wall, floor or ceiling.
Other points to consider are: When mounting rigging components
on walls, floors or ceilings ensure that all fixings and fasteners used
are of an appropriate size and load rating (DIN 18800 standards
apply within Germany). Wall and ceiling claddings and the
construction and composition of walls and ceilings all need to be
taken into account when determining whether a particular fixing
arrangement can be safely employed for a particular load. Cavity
plugs or other specialist fixings, if required, must be of an
appropriate type, fitted and used in accordance with the makers
instructions.
Use only the rigging accessory fixing holes indicated on the relevant
page(s) of the d&b rigging accessories manual and the specific
mounting instructions to fix d&b rigging accessories to walls, floors
or ceilings. Where specified, the recommended maximum torque
settings for screw fasteners must be strictly complied with.
Secondary safeties
All loudspeakers flown in theatres, studios or other places of work
and entertainment must, in addition to the principle load bearing
means of suspension, be provided with an independent, properly
rated and securely attached secondary safety.
Only steel wire ropes or steel chains of an approved construction
and load rating may be used as secondary safeties. Plastic covered
steel wire ropes are not permitted for use as secondary safeties. As
recommended by BGV C1 (GUV 6.15), the secondary safety must
prevent the load from dropping more than 20 cm if the principal
means of suspension fails.
Safety inspections
All rigging components and assemblies are subject to wear and
tear, aging, corrosion etc. As safety critical components, its
imperative that, prior to each and every use or installation, all
rigging components, rigging assemblies and cabinet fixing points
are carefully inspected to ensure that they are free of defects and
that they function flawlessly. Care should be taken to identify signs
of undue wear and tear, dents, cuts, tears, splits and any
indications of corrosion. If upon inspection, damage is discovered
and there exists even the slightest doubt as to the physical integrity
and safety of the damaged item, then the damaged item must not,
under any circumstances, be deployed.
Regular, more rigorous test and inspection of rigging components
must also be carried out. Safety legislation and test and inspection
requirements will vary from country to country. In most cases,
annual independent test and inspection by a suitably approved and
qualified inspector will be required - users must ensure compliance
with all applicable safety requirements.
d&b recommends regular safety inspections and further
recommends that a logbook be kept detailing the test and inspection
history of each d&b rigging accessory.
