What is the reason why the reverse rotation of the washing machine always rings?

1. The counter contact reed of timer is ablated, resulting in poor contact and abnormal sound, so the timer needs to be replaced.

2, reducer teeth wear, in order to reduce noise and improve stability, washing machine reducer gear is helical, because it is helical tooth wear, when the spindle rotates reversely, it will cross up and down to cause abnormal sound, so replace the reducer.

3. The capacity of the starting capacitor is reduced. Due to the different installation angles of motor drive, the starting torque of forward and reverse rotation is also different. The decrease of capacitance will lead to abnormal startup and abnormal sound. Just replace a new capacitor.

Extended data

Comprise a plastic cylindrical inner cylinder and a metal cylindrical out cylinder with at least one water outlet, wherein that inner cylinder is matched with the out cylinder; The inner cylinder consists of a base, a cylindrical inner cylinder and a mouth ring; One end of the cylindrical inner cylinder is connected with the base, and the other end is connected with the port ring.

The cylindrical inner cylinder is composed of two or more interconnected side wall plates and two or more ribs. The side wall plate is an arc-shaped plate with four contour edges, which are respectively connected with the base, the support ring and the rib plate and have a connection structure, and a plurality of dewatering through holes are arranged on the plate.

The rib plate is an arc plate with ribs in the middle, four contour edges of the rib plate are respectively connected with the base, the support ring and the side wall plate, and are provided with a connecting structure, and the plate is provided with a plurality of dehydration through holes; When the side wall plate and the rib plate are connected into a cylindrical inner cylinder, the ribs on the rib plate extend into the cylinder to lift the rib plate.

In order to make the washing machine run normally for a long time, it must be lubricated and maintained correctly on time. The main components that need lubrication are bearings and gears. Bearings need to be filled with L-TSA22 antirust and antioxidant lubricating oil with good wear resistance and oxidation stability through the oil injection hole, usually once every 2-3 years, or once a year if general mechanical oil is used.

The gear is lubricated with No.2 extreme pressure lithium-based grease with good adhesion, or zinc dialkyl dithiophosphate with a mass fraction of 1% or MoS2, L-CKC 100 gear oil with a mass fraction of 3%.

The bearings and gears of the dryer should be added with L-AN 15 and L-AN68 lubricating oil with good oxidation resistance, rust prevention and wear resistance every year or half a year. If sealed rolling bearings are used, polyurea-based thickened refined petroleum lubricating oil with service life longer than 1000 hours shall be sealed by the bearing factory, and No.2 lubricating grease with rust prevention and oxidation resistance shall be added.

References:

Baidu encyclopedia-washing machine