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1 Clean the ltered water outlet with a clean toothbrush and wipe
off any contamination with a clean cloth.
Note: Do not use a used toothbrush, as it may transfer bacteria to the water
outlet.
Replacement
New lter cartridges are available under the following type numbers:
WP3911 for water purier WP3811.
WP3910 for water purier WP3810.
However, the housing of both water puriers is suitable for both types of
lter cartridges.
Replace the lter cartridge if it is clogged to prevent damage to the
water purier.
No part of the cartridge can be reused. Discard the used cartridge and
replace it with a new one.
When to replace the lter cartridge
The actual lifetime of the lter cartridge depends on the quality of the
local water and the water pressure.
For optimal performance of the water purier, replace the lter cartridge
if one of the following situations occurs:
A You have used the lter cartridge for six months.
B The hollow bre of the lter cartridge (visible through the cartridge
window) has turned rust brown or dark grey (see section ‘Cartridge
replacement indicator’).
C The volume of puried water decreases substantially.
D The ltered water still has an unpleasant smell or is still turbid
after purication.
Reduced lter cartridge life
The lter cartridge has a shorter life and should be replaced more
frequently in the following situations:
The water pressure is very low.
The pipes and water tank are worn.
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ENGLISH12