Using The Appliance; Understanding The Air; Quality Light - Philips AC4558 User Manual

4 Using the
appliance

Understanding the air

quality light

Air quality light
color
Blue
Blue-purple
Purple-red
Red
The air quality light automatically
goes on when the air purifier is
switched on, and lights up all colors
in sequence. After approximately
30 seconds, the air quality sensors
select the color that corresponds
to the surrounding air quality of
airborne particles.
The color of the air quality light is
determined by the highest level
among PM2.5, Gas and IAI readings.
8 EN
Air quality level
Good
Fair
Poor
Very poor
PM2.5
AeraSense sensing technology
accurately detects and quickly
responds to even the slightest
particle change in the air. It provides
you with reassurance with real-time
PM2.5 feedback.
Most of the indoor air pollutants
fall under PM2.5 – which refers to
airborne particle pollutants smaller
than 2.5 micrometers. Common
indoor sources of fine particles are
tobacco smoke, cooking, burning
candles. Some airborne bacteria
and the smallest mold spores, pet
allergen and dust mite allergen
particles also fall under PM2.5.
PM2.5 level
≤12
13-35
36-55
>55
GAS
With an advanced gas sensor, a
display ranging from L1 to L4 shows
the level change of potential harmful
gases (incl. VOC, odor, etc.) detected.
L1 indicates best air quality.
Gas level
L1
L2
L3
L4
Air quality light
color
Blue
Blue-purple
Purple-red
Red
Air quality light
color
Blue
Blue-purple
Purple-red
Red