Owner's Manual
BERY
L
LIUM
Precautions
of
use
■
2. Precautions
of
use
It
is essential
to
scrupulously
respect
the
following
precautionary measures.
2.1.
Tweeters including a Beryllium dome should
be
handled with caution.
As
a consequence, the
users
of
the speakers have
in
particular
to
strictly ensure that the protective grille and
all protective means on the tweeter
Is
well maintained and
in
no
circumstance take the Beryllium from its original
location.
Generally, the speakers should
be
kept out of the reach
of
children, especially the access
of
the tweeters and the
dome
of
Beryllium.
2.2. The Beryllium dome should never be
in
contact with
abrasive material
Beryllium
is
a stable
product
at
room
temperature. Nevertheless,
it
reacts
with
the
following acids: sulphuric, hydrochloric, and
hydrofluoric
(with
hydrogen
release).
Conditions to avoid: heat, sparks, open flame,
or
any
other
sources
of
ignition. Beryllium is
incompatible
with
oxidizing
agents, and also
notably
bromine
pentafluoride and
performic
acids.
It
explodes when heated
with
magnesium.
In finely
divided
form, Beryllium is a moderately flammable
product.
In
a contained space,
dust
cloud
of
the
metal may
explode in
the
presence
of
a source
of
ignition. In case
of
fire,
Beryllium releases
highly
toxic
smoke and vapour.
In case
of
fire,
the
recommended fire extinguishing agents are
engineered powders
for
combustible
metals
or,
failing that,
other
inert powders.
It
is
also recommended
to
wear adequate
personal
protective
equipment
to
prevent
contact
with
the
substance
or
its
products
of
combustion
as
well as full self-
contained breathing apparatus.