Air quality sensor
Iftheairqualitysensorisdirty,itbecomesunreliable.
1 Remove dirt with a soft brush or with a vacuum cleaner.
Particle lter and gas lter
1 Remove the lters from the appliance (see chapter ‘Filter replacement’, section ‘Removing
the lters’).
2 Remove visible dirt with a vacuum cleaner.
Never clean the particle lter and the gas lter with water or any other liquid or detergent.
If the lters get wet, dispose of them and replace them with new lters.
Note: Under normal usage conditions, we advise you to place the gas lter in direct sunlight in a room
with natural ventilation for 3-4 hours every 4 months. This helps maintain good lter performance and
prolongs the life of the lter. In case of more extreme usage conditions (smoking environment, just
renovated room, non-domestic use etc.) and more frequent use, you have to do this more often.
Pre-lter
1 Clean the pre-lter with a vacuum cleaner.
Note:You can also clean the pre-lter in water.
2 If you have cleaned the pre-lter in water, properly dry it before you place it back into the
appliance.
Filter replacement
Particle lter
In case of normal household use in a non-smoking environment and proper maintenance (see
chapter ‘Cleaning and maintenance’), the particle lter lasts approx. 5 years.
Replace the particle lter when the lter colour matches the appropriate colour of the
appropriate section of the lter replacement label.
Filter replacement label
The appliance (and each new lter) comes with a lter replacement label with two
sections: (Fig. 17)
a section with a dark brown colour (the colour of tobacco stains) for smoking environments;
a section with a dark grey colour (the colour of dirt and dust) for non-smoking environments.
Youcanstickthelterreplacementlabelonthesideoftheparticleltersurfaceforyourreference.
A new particle lter is available under the following type numbers:
AC4105 for CleanAir System AC4054/AC4052
AC4106 for CleanAir System AC4064/AC4062
Gas lter
Incaseofnormalhouseholduseandpropermaintenance(seechapter‘Cleaningandmaintenance’),
thegaslterlastsapprox.5years.
Note: You may need to replace the gas lter sooner in case of more extreme usage conditions (smoking
environment, just renovated room, non-domestic use etc.) and insufcient maintenance.
Replace the gas lter if it does not remove odours quickly and properly anymore.
A new gas lter is available under the following type numbers:
AC4115 for CleanAir System AC4054/AC4052
AC4116 for CleanAir System AC4064/AC4062
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English 9