Siemens Pure 500 CIC WL User Manual page 21

Wax protection
Your hearing instruments are equipped with a sieve,
recess or guard on the sound outlet to prevent earwax
from entering the hearing instruments.
Your Hearing Care Professional will
provide you with the wax protection
appropriate for your instruments
and can advise you how to clean or
replace it.
If the instruments sound distorted
 
or weak exchange the wax
protection.
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