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Washing Machine Motor How To Better Repair

Zhejiang Kening Motor Co.,Ltd | Updated: Jun 27, 2017

Ordinary pulsator washing machine using washing Washing Machine Motor  and dehydration Washing Machine Motor , are single-phase capacitor running asynchronous Washing Machine Motor , the rotor for the cast aluminum cage rotor, the stator for the distribution of the core, embedded with two sets of primary and secondary windings.

Washing machine Washing Machine Motor  fault for the Washing Machine Motor  winding fault and insulation failure, mechanical fault Washing Machine Motor  stator and rotor friction, bearing damage and so on.

1, turn on the power, the Washing Machine Motor  does not turn

The cause of the fault is usually the Washing Machine Motor  winding burned or local short circuit, open circuit, bearing and Washing Machine Motor  shaft lock, bad rotor, maintenance methods are as follows.

(1) intuitive identification method

Rotate the Washing Machine Motor  shaft by hand, such as turning, indicating that the bearing has been unilateral wear. These two phenomena are due to the bearing too tight and too loose, the washing machine after a long period of operation caused. The Washing Machine Motor  is not activated when the hand is turned normal, but turn on the power but not turn, and encountered such a situation can be opened the Washing Machine Motor , one hand holding the rotor shaft, the other hand holding the bearings back and forth, if obvious Loose phenomenon, that is due to bearing wear, there has been a "stator suction rotor" phenomenon, should replace the bearing.

(2) resistance test method

Measure whether the Washing Machine Motor  windings are good. The multimeter is placed in the block, and a test lead is on the common winding, and the other table is connected to the main winding and the secondary winding in turn to measure the resistance value. Washing machine Washing Machine Motor  winding resistance is generally more than ten to several tens of euros.

For short-circuit windings that have not been completely burned out, local simple repair methods can be taken. First find the group that was bruised, power heating stator winding to soften, with tweezers carefully pick out the wound wounds and thread, the ends of the fracture gently pull out 3 ~ 5mm, remove the oxide layer, Exposed bare wire, coated with rosin, and the other to take a line of the same diameter and bare wire welding firm, and then coated with insulating paint. The rest of the fracture is also handled in this way. After drying put on the insulation tube (tube tube), the welding port cover up and put it back. Check with a multimeter is connected, if connected, will repair the site of a few bands of nylon thread or silk thread to prevent another bruise. For severe short-circuit coil windings, all must be rewound.

2, the Washing Machine Motor  starts difficult, slow down after the start

The cause of the fault is the Washing Machine Motor  bearing damage, the stator winding local short circuit, the rotor cage or end ring fracture.

(1) intuitive identification method

Unscrew the Washing Machine Motor  and observe if the color of the stator windings is correct. If the end of the winding black spots, then the damp after the short-circuit; if the winding insulation crisp, or even carbonation fragmentation, then the winding serious short circuit.

(2) resistance test method

Multimeter resistance meter in turn measure the Washing Machine Motor  main and auxiliary winding DC resistance value, if the winding resistance is too small, then the winding occurred local short circuit.

(3) maintenance method of rotor cage or end ring breakage

Rotor cage or end ring fracture usually due to overheating and showing a blue, so as long as careful observation of the various parts of the rotor, you can find the fracture. End ring rupture can be polished with gas welding. After the cage breaks, it is best to replace the rotor, because the repair of amateur conditions is more trouble.

3, the Washing Machine Motor  shell live

The Washing Machine Motor  housing is typically caused by a reduction in Washing Machine Motor  insulation performance. Measure the insulation resistance of the main and secondary windings of the Washing Machine Motor  to the ground (Washing Machine Motor  housing) with a megger. Test the three leads of the Washing Machine Motor  together with the other end of the megger. Under normal circumstances the resistance should be more than 2MΩ, if the resistance is low, then the Washing Machine Motor  insulation performance decreased; such as table pointer swing, then the insulation has been basically breakdown, but there is a very small insulation layer.

Insulation performance caused by the Washing Machine Motor  leakage, and sometimes may be due to serious moisture caused by the Washing Machine Motor , the furnace can be used fire baking stator winding, baking time interval to flip, so that even heat, repeated baking. If the insulation is damaged, the winding must be repaired.

4, the Washing Machine Motor  appears abnormal sound, the fault for three reasons:

(1) Washing Machine Motor  bearing corrosion damage, resulting in a strong vibration when the Washing Machine Motor ,, issued a significant noise, need to replace the Washing Machine Motor .

(2) the Washing Machine Motor  rotor shaft bending, making the entire rotor eccentric, the Washing Machine Motor  is not only large noise, and start difficult, to correct the rotor shaft.

(3) the Washing Machine Motor  in the operation issued a "Cha Cha" sound, often due to the rotor and the stator occurred between the relative deflection, in the operation of the relative friction generated, the so-called "sweep chamber." The upper and lower end caps of the Washing Machine Motor  are fixed by four or six screws. When the fastening screws are loosened, the upper and lower ends are collided and the position will change. The upper and lower bearing holes deviate from the center position, causing the rotor to skew, rub with the stator, Bore phenomenon.

After the Washing Machine Motor  appears in the chamber, you can use the wooden hammer gently tapping the cover to adjust. In the percussion when the edge of the Washing Machine Motor  to turn the rotor, and pay attention to "Cha Cha" sound is reduced, if the sound increases, should replace the percussion position. You can also carefully observe the rotor in the direction of the skew in the stator, and then hit the end cover, until you hear the sound of the chamber so far. Sweep the Washing Machine Motor  after a high speed, the screws should be tight for good, to prevent the phenomenon of sweeping again.