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1Clean the filtered 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 filter cartridges are available under the following type numbers:
-WP3911 for water purifier WP3811.
-WP3910 for water purifier WP3810.
However, the housing of both water purifiers is suitable for both types of filter cartridges.
Replace the filter cartridge if it is clogged to prevent damage to the water purifier.
No part of the cartridge can be reused. Discard the used cartridge and replace it with a new one.
When to replace the filter cartridge
The actual lifetime of the filter cartridge depends on the quality of the local water and the water pressure.
For optimal performance of the water purifier, replace the filter cartridge if one of the following situations occurs:
AYou have used the filter cartridge for six months.
BThe hollow fibre of the filter cartridge (visible through the cartridge window) has turned rust brown or dark grey (see section ‘Cartridge replacement indicator’).
CThe volume of purified water decreases substantially.
DThe filtered water still has an unpleasant smell or is still turbid after purification.
Reduced filter cartridge life
The filter 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.
