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2.1.1 PRECAUTIONS FOR USE - SAFETY MEASURES
The following precautions for use must be scrupulously followed.
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As a general rule, speakers must be kept out of the reach of children and specifically access to the
tweeter and to the beryllium dome must be prevented. Users of the speakers must particularly ensure
that the grille or all other protective parts of the tweeter are cared for and the beryllium must under no
circumstances be removed from its original location.
•
The beryllium dome must never come into contact with abrasive materials. At room temperature,
beryllium is a stable product; however it does react with sulphuric acid, hydrochloric acid and hydrofluoric
acid to release hydrogen.
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Conditions to avoid: high temperatures, sparks, naked flames or other ignition sources. Beryllium is not
compatible with oxidising agents and also particularly bromine pentafluoride and performic acid. It will
explode when heated with magnesium. In its finely divided form, beryllium is a moderately flammable
product. In a confined space, a cloud of metal dust can explode in the presence of an ignition source. In
the event of a fire, beryllium emits smoke and highly toxic fumes.
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In the event of a fire, the extinguishing agents which are stipulated are special powders for metal
fires or if these are unavailable, other inert powders. It is also advisable to wear adequate personal
protection to prevent contact with the substance or its combustion products as well as an integral self-
contained respirator with pressure regulator or which is pressurized.
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As a general rule, contact with skin or eyes, inhalation or ingestion of all or part of the beryllium
dome should be avoided. The manufacturer stresses that the absorption of beryllium through the
respiratory, cutaneous or digestive tract may cause severe physical disturbances.
2.1.2 PRECAUTIONS FOR USE - IN CASE OF DAMAGE
The following precautions for use must be scrupulously followed in case of damage to the dome.
EN
IT
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If the beryllium dome is damaged in any way, it should be covered as soon as possible. We
recommend that you contact the retailer to have the tweeter dismantled and replaced by trained
personnel at the distributor.
•
If the dome is broken, any beryllium particles should be carefully collected and then placed in a
hermetically sealed plastic bag. It should be sent back to the retailer at the same time as the speaker.
2.1.3 PRECAUTIONS FOR USE - FIRST AID
In case of inhalation. If beryllium or beryllium dust is inhaled, bring the affected person outside or to an
aerated place and put them in a semi-seated position so that they can breathe comfortably. Transfer the
person to the nearest medical services or call an anti-poison center.
In case of contact with the eyes. Rinse immediately using plenty of water for 15 minutes or until all the
product has been removed. Remove contact lenses if the person in question is wearing them and if they can
be removed easily. We recommend that you contact a doctor.
In case of contact with skin. Remove any contaminated clothes and shoes quickly; throw away clothes and
shoes. Wash the skin with soap and water for at least 15 minutes. Clean any cuts and injuries quickly and
carefully. Any particles of beryllium which have accidentally become lodged underneath the skin must be
removed. Consult a doctor.
In case of ingestion. If the victim is conscious, rinse out their mouth with water and ask them to drink several
glasses of water for dilution purposes. Seek medical assistance immediately. Never give liquids to a person
who is unconscious or having convulsions. Vomiting should only be induced on the orders of a doctor or an
anti-poison centre. Consult a doctor rapidly.
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