Waterpik WP-450 Mode D'emploi page 9

Adjusting the Pressure Setting
You can adjust the pressure setting on your
Water Flosser by simply sliding the pressure
switch on the handle. Slide the pressure switch
to "low" for gentle cleaning on sensitive gums.
Slide the pressure switch to "high" for more
powerful cleaning between teeth and below the
gumline.
Keep unit upright during use for best results.
Pressure
Setting
Direct the stream by turning the knob at the top
of the handle.
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