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How to maintain the filter
1. Press the dust cup lock and turn it in a clockwise direction.
2. Take out the filter case, then remove the filter. 3. Wash the filter case and HEPA filter.
4. Please dry the HEPA filter and filter case 5. After drying, reassemble the filter to the case.
completely before reassembling.
6. Put the filter case back in the dust cup. 7. Assemble the dust cup in a counter-clockwise direction.