Remove the cover. Unscrew the knob at the bottom front of the filter and remove the vented lid.
Remove the cartridge and charcoal filter. Pull the filters cartridge out completely. Remove the charcoal filter from the back of the component.
Remove the front screen and clean it by running water over it.
Clean the collection cell. The collection cell is the permanent filter of the air purifier. It can be cleaned by either using compressed air or by rinsing it under running water.
Clean the interior. Using a small vacuum or a can of compressed air, blow out dust that has accumulated on the inside of the component itself.
Dry all parts thoroughly before reassembling the filter. Installing a damp filter may result in severe damage to your Oreck air purifier.