W&H Multidem C27 Mode D'emploi page 32

Installation
Inserting the Filter Cartridge
Remove the protective cap .
Note the next exchange date in the date field on the filter cartridge .
Insert the filter cartridge  vertically into the filter head .
The filter cartridge can only be inserted when the locking handle is open. Make sure that the filter
cartridge is positioned correctly. Turn the locking handle  until you feel it engage.
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