What kind of maintenance is required for a filter/purifier?
If the filter is dirty, the filter/purifier must be cautiously cleaned using a vacuum or other cleaning method in order to remove dirt from its fibers. Maintaining the cleanliness of the filter chamber can extend the life of the filter cartridges.
The use filter cartridge must be removed and a new one should be installed properly. After that, the cover can be put up before it can operate again.
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