Owner's Manual

BERYLLIUM
Precautions
for
use
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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
ox
idizing 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 co
mbu
st
ible
metals
or
, failing that.
other
inert
powders.
It
is
also
recommended
to
wear
adequate
personal
protective
eq
uipm
ent to prevent
contact
with
the s
ub
stance
or
its
products
of
combustion
as
well
as
full
self
- contained
breathing
apparatus
.
2.3.
Generally. prevent
skin
or
eye
contact
. ingestion
or
inhalation
of
all
or
part
of the
Beryllium
dome
. The
manufacturer
underlines
the fact
that
its
abs
orption
by inhalation.
dermal
route
or
ingestion can cause
severe physical
afflictions
.