2. It is a transmission fault, which prevents the power from being transmitted. Check the toothed bar, swing head plate, gearbox and clutch, etc. , who found off, foreign body stuck, unable to engage after severe wear, etc. , the missing parts should be eliminated or replaced.
3. Oily bearings are mainly used for electric fans. This kind of bearing is usually a powder metallurgy product. Tightly wrapped in the oil hole inside the bearing for lubrication. When the electric fan works, the temperature of the motor rises, and the friction between the rotating shaft and the bearing generates heat, which will gradually consume lubricating oil. If the lubricating oil is not properly replenished, the fan motor will not be able to maintain normal operation, and the speed will be reduced or even turned, thus burning out the motor. During the use of the electric fan, you can refuel the electric fan from the oil filler every 1 ~ 2 months. Sewing machine oil or spindle oil can be used.
4. The reducer of electric fan uses lubricating oil (industrial vaseline or calcium-based grease), which is usually replaced once every 3 ~ 4 years. When replacing, first remove the back cover, remove the balance key, then remove the gearbox cover, gently scrape off the old grease inside with a small bamboo lamp tool, then clean it with clean gasoline, and then add a proper amount of new grease.