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Note:The time between the filter replacement signal and the locking of the appliance varies, depending on how often you use the appliance.

Note:When the power on/off light, filter replacement light 2 or 3/4 and the ‘REPLACE FILTER’ light are on continuously, the appliance is locked (see section ‘Filter maintenance’ in this chapter for more information).

Approximately 1 day before the appliance locks, it beeps every 30 minutes to inform you that one of the filters needs to be replaced.

When the appliance is locked, you hear a beep when you press any button.

You can switch off the appliance by pressing andthe on/offholdingbuttonthe on/off. button. If the appliance is locked:

1Check which filter needs to be replaced (see section ‘Filter cleaning light and filter replacement lights’ above).

2Switch off the appliance and unplug it.

3Replace the appropriate filter (see section ‘Replacing the filters and resetting the appliance’ below).

Replacing the filters and resetting the appliance

Tip: Place the appliance against a wall for more stability when you remove or insert filters.

1Switch off the appliance and unplug it.

2Place your fingers in the recesses of the side panels and gently pull the bottom part of the front panel towards you.Then lift the hooks at the top of the panel out of the top of the appliance.

3To remove filter 1 (pre-filter), grab the two projections and pull the filter towards you.

4AC4004 only: remove filter 2 (multi-care filter) from the back of the pre-filter.

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Philips AC4002, AC4004 user manual Replacing the filters and resetting the appliance, Switch off the appliance and unplug it
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AC4002, AC4004 specifications

The Philips AC4002 and AC4004 air purifiers are designed to enhance indoor air quality, catering to a range of environments, including homes and offices. Both models are equipped with advanced technologies that ensure effective air purification, making them ideal for individuals concerned about allergens, pollutants, and overall air hygiene.

The Philips AC4002 features a 3-layer filtration system, combining a pre-filter, a HEPA filter, and an activated carbon filter. This multi-layer approach is engineered to capture up to 99.97% of airborne particles as small as 0.3 microns, which includes common allergens like dust mites, pollen, and pet dander. The activated carbon filter excels in reducing odors and harmful volatile organic compounds (VOCs), ensuring that the air remains fresh and pleasant.

Similarly, the AC4004 also incorporates a robust filtration mechanism. Furthermore, the AC4004 model is equipped with additional smart features, such as improved air quality sensors. These sensors continuously monitor the air quality and automatically adjust the fan speed according to the detected level of pollutants. This not only ensures efficient purification but also optimizes energy consumption, making the device eco-friendly.

Both models boast a sleek, modern design that seamlessly fits into various room styles. Their compact size allows for versatile placement, whether on a table, shelf, or floor. The intuitive user interface is designed for convenience, featuring easily accessible controls and a digital display that provides real-time information on air quality status.

Moreover, the noise levels of the Philips AC4002 and AC4004 are impressively low, meaning they can operate quietly in bedrooms or living spaces without causing disruptions. This is particularly important for users who prioritize peaceful environments for sleep or work.

In addition to their main features, the longevity is enhanced by filter replacement indicators, which alert users when it’s time to change the filters, ensuring optimal performance. With their combination of high-efficiency filtration, smart air quality monitoring, and user-friendly design, the Philips AC4002 and AC4004 air purifiers stand out as reliable options for anyone seeking to improve their indoor air quality.
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