1. Scrub the dust on the front cover of the tower fan with a cloth first.

2. Turn the screw at the bottom of the tower fan, rotate the bottom counterclockwise, and unscrew the bottom of      the tower fan.

3. Use screwdriver to unscrew two small jaws on the back panel of tower fan.

4. After the panel is opened, the screw connecting the two ends of the drum blade is unscrewed.

5. Remove the propeller, clean and drain the water.

6. Clean up the dust inside. Don't touch the motor or circuit board. It's better to wipe it with a dry cloth.

7. After cleaning, oil can be applied to the motor.

8. After cleaning, put the propeller back, cover the upper panel and open it to see if it works properly.

Above is the order of tower fan cleaning, I hope it can help you.