If the fan not starting, or if the speed decreases, choose this CBB61 capacitor and replace the old. It is widely used for motor speed control and switching control. Enduring, small loss, strong moistures resistance & excellent electrical performances. Suitable for ceiling fan, wall fan, stand fan, industrial fan, air exchange fan, water pumps, motor, generator. This capacitor control the starting and stopping of the fan, as well as the speed regulation.