Phonak Exelia Art BTE, User Manual, Page: 54 / 67

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If this should occur, it will prevent sound going
through the slim tube, and may be harmful to the
hearing instrument’s electronics.
The slim tube and dome should be changed every
third month, or sooner if the slim tube becomes
stiff or brittle. Only your hearing care professional
should change the dome or SlimTip. This is to
ensure a secure & safe fit of the dome or SlimTip
to the slim tube.
Maintenance