The sound tube and the dome may need to be changed if the sound
tube becomes stiff, brittle, kinked or damaged. When you change the
domes, make sure they are securely fastened to the sound tube before
inserting them in your ear. Failure to change the dome in accordance
with the instructions could result in injury.
Hearing aids are exposed to moisture in the form of humidity and
perspiration while being worn. The daily use of a dehumidifying
system or drying kit is recommended. These accessories may be
purchased from the
HearingDirect.com
website.
Your HD 350 hearing aid is equipped with a filter. This filter is located
at the front and top of the aid and prevents moisture and debris from
getting into the hearing aid. If the hearing aid seems to have lost
power and changing the battery does not correct the situation, the
16
Caring for
your aid
Sound Inlet
filters
