How often is the filter element replaced? Is it possible to clean it?

1. Cleaning: It is recommended to clean the cyclone system assembly, built-in sponge and filter element once every 4-6 months;
2. Air drying: Before assembled, the filter element and built-in sponge shall be air dried for about 24 hours for being thoroughly dried;
3. Replacement: It is recommended to replace the filter element once every 6-12 months depending on the service condition.