The filter cleaning method of the air purification device varies according to its filter type and equipment design. The following are cleaning recommendations for different filter types:
### 1, pre-filter (initial effect filter)
1. ** Disassemble **
- First, turn off the air purification device and unplug the power to ensure that the device will not accidentally start during the cleaning process.
- Find the location of the front filter, which is usually located at the very front of the device to filter out larger particles such as dust, hair and pet dander.
- Depending on how the device is mounted, which may be by fastening, sliding or screwing, carefully remove the front filter from the device.
2. ** Wash **
- For washable pre-filter, rinse with running water. If the filter is dirty, you can use a soft brush to gently scrub the surface of the filter, but be careful not to use too much force to avoid damaging the structure of the filter. For example, some filters are made of plastic or metal mesh, and excessive force may cause the mesh to deform.
- If the pre-filter is not washable, you can use the suction head of the vacuum cleaner with a soft brush to gently absorb the dust on the surface of the filter.
3. ** Dry and reinstall **
- For the pre-washed filter, place it in a well-ventilated place to dry naturally. Avoid direct exposure in the sun, because too high a temperature may deform the filter or damage the material of the filter.
- After the pre-filter is completely dry, install it back into the air purification device according to the correct installation method.
2, HEPA filter (High efficiency air filter)
1. ** Check whether it needs cleaning **
HEPA filters are mainly used to filter small particles, such as bacteria, viruses, pollen and soot. Under normal circumstances, HEPA filter is not recommended to clean, because cleaning may cause damage to the filter structure, thereby reducing the filtration efficiency.
- However, if it is found that the HEPA filter has only a small amount of dust attached, and the equipment instructions allow for simple cleaning, very careful operation can be attempted.
2. ** Cleaning method (if allowed) **
- Remove the HEPA filter carefully using the same removal procedure as the pre-filter.
- Using a very gentle airflow, such as using a compressed air tank, place the nozzle about 2-3 cm away from the filter and blow away dust in a direction perpendicular to the surface of the filter. Note that the airflow pressure should be low to prevent damage to the filter. It is absolutely forbidden to clean the HEPA filter with water, as this will damage the filtration performance of the filter.
3. ** Reinstall **
- After ensuring that the filter is not damaged, install the HEPA filter back into the air purification unit in the correct way.
Three, activated carbon filter
1. ** Disassemble **
- As with the pre-filter, first turn off and unplug the power to the air purifier, then locate the activated carbon filter and carefully remove it. Activated carbon filter is mainly used to absorb odors and harmful gases.
2. ** Wash **
- Activated carbon filter is generally not recommended for cleaning, because cleaning may destroy the microporous structure of activated carbon, resulting in a decrease in its adsorption capacity. If it is a slight contamination, you can try to gently pat the filter to remove the dust attached to the surface.
- If deep cleaning is required, it may be necessary to replace the activated carbon filter, because the adsorption function of activated carbon is difficult to recover after saturation.
3. ** Reinstall or replace **
- If only a simple pat cleaning has been performed and the filter is not damaged, the activated carbon filter can be reinstalled back into the device. If you decide to replace the activated carbon filter, purchase the appropriate filter according to the specifications of the equipment and replace it.
Before cleaning the air purification device filter, be sure to read the equipment manual carefully, because different brands and models of air purification devices may have different requirements and precautions.