62
Dysfunction
· Be aware of the possibility that your hearing aid
may stop working without notice. Keep this in
mind when you depend on warning sounds (e.g.
when you are in traffi c). The hearing aids may
stop functioning, for instance if the batteries have
expired or if the tubing is blocked by moisture or
ear wax.
Active implants
· The hearing aid has been thoroughly tested
and characterized for human health according
to international standards for human exposure
(Specifi c Absorption Ratio – SAR), induced
electromagnetic power and voltages into the
human body.
· The exposure values are well below international
accepted safety limits for SAR, induced
electromagnetic power and voltages into the
human body defi ned in the standards for human
health and coexistence with active medical
implants as pacemakers and heart defi brillators.
· MultiTool (which has a built-in magnet) should be
kept more than 30 centimeters (1foot) away from
the implant, e.g. do not carry it in your breast
pocket.
General warnings
63
· Follow the guidelines recommended by the
manufacturers of implantable defi brillators and
pacemakers regarding their use with magnets.
· If you have an active brain implant, contact the
manufacturer of your implantable device for
information about the risk of disturbance.
X-ray/CT/MR/PET scanning, electrotherapy
and surgery
· Remove your hearing aid before X-ray examinations
and CT/MR/PET scans, electrotherapy, surgery
etc. as your hearing aid may be damaged when
exposed to strong electromagnetic fi elds.
Heat and chemicals
· The hearing aid must never be exposed to extreme
heat e.g. left inside a parked car in the sun.
· The hearing aid must not be dried in microwave
ovens or other ovens.
· The chemicals in cosmetics, hairspray, perfume,
aftershave lotion, suntan lotion and insect repellent
can damage the hearing aid. Always remove your
hearing aid before applying such products and allow
time to dry before use.
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