1) Take down the air filter
At the slot of surface panel to open an angle, pull the air filter downward and take it out.
At the slot of surface panel to open an angle, pull the air filter downward and take it out.
To clean the dust adhering to the filters, you can either use a vacuum cleaner, or wash them with warm water. The water with the neutral detergent should be below 45°C. When the filters are very dirty, such as oil stain, wash and dry it in the shade.
NOTE: Never use water above 45°C to wash, or it can cause deformation or discoloration. Never parch it by fire, or it can cause a fire or deformation.
Reinsert the filters along with the arrow head, then cover the surface panel and clasp it.