Air Intake Valve: 2 Washing Modes
Dry Cleaning:
Equip The Wash Brush, Close The Air Intake Valve, It Can Blow The The Dust And Dirt Easily
Wet Cleaning:
Equip The Wash Brush, Open The Air Intake Valve, It Can Spray The Water And Loosen The Stubborn And Sticky Grime Then Remove Them.