How do you clean the filter element?

1. Remove the dust bucket;
2. Remove the filter element;
3. Clean the filter element with clean water. When doing so, rotate the filter element 360°. If necessary, you can tap the water tank several times to confirm that the dust and debris in the gap of the filter element are all removed;
4. Air dry the filter element for at least 24 hours to ensure it is thorough dried.