Turning On And Off - Philips AC4552 User Manual

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
≤35
36-75
76-115
>115
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
IAI
The professional-grade AeraSense
sensor detects the level of indoor
air allergen and with numerical
feedback from 1 to 12 the potential
risk level of indoor air allergens can
be displayed. 1 indicates best air
quality.
IAI level
1-3
4-6
7-9
10-12

Turning on and off

Note
• Always place the air purifier on
a stable, horizontal, and level
surface with the front of the
unit facing away from walls or
furniture.
• For optimum purification
performance, close doors and
windows.
• Keep curtains away from the air
inlet or air outlet.
• Do not block the inlet or air
outlet with clothing.
1
Put the plug of the air purifier in
the wall outlet.
» The air purifier beeps.
» All lights go on once and
then go out again.
Air quality light
color
Blue
Blue-purple
Purple-red
Red
EN
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