11
NORDIC S4
4.2. CHANGING THE FILTERS
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indoor air quality it is important to change them when
they are dirty.
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the degree of contamination of the air where they are
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at least once a year, preferably in the autumn (after
the pollen season). In areas with a lot of dust and
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spring and autumn.
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• Reduced performance of the unit
• The unit becoming dirty
• Humidity damage
• Reduced indoor air quality
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1. Unplug.
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compartment.
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4. ΖQVHUWDQHZȴOWHU
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exhaust air) at the same time.
21
3