Vibration motor common faults and treatment methods

Symptom 1: The motor cannot start after the power is turned on.  

Possible Causes:

1. Short circuit between stator winding machines, grounding of stator windings.

2. The stator winding wiring is wrong.

3. The load is too heavy and the rotor is blocked.

Approach:

1. Check for open circuit, short circuit, grounding parts and repair;

2. Check the winding wiring and correct it;

3. Reduce the load and eliminate obstacles.

Symptom 2: Motor temperature rise is too high or smoke

Possible reasons :

1. The load is too heavy;

2. Winding short circuit;

3, winding wiring error;

4. The windings are wired or short-circuited between turns;

5, motor rotor broken strip;

6, the word rotor phase rub;

7. The power supply voltage is too low.

Approach:

1. Reduce the load or replace the motor;

2. Repair the short circuit part;

3. Check the winding wiring and correct it;

4. Identify the fault and repair it;

5. Replace the rotor;

6. Measure the motor air gap and bearing wear and repair.


Fault phenomenon three: bearing overheating

Possible Causes:

1. There is a problem with bearing wear or quality;

2. The bearing grease is too much or too little, the model is wrong or the quality is not good;

3. The inner ring of the bearing is too loose or too tight;

4. The cooperation between the outer ring of the bearing and the end cover is too loose or too tight;

5. The assembly quality of the end cover and the inner cover of the bearing is not good.

Approach:

1. Replace the bearing;

2. Adjust the grease;

3. When it is too loose, it can be welded on the shaft to re-process the metal. When it is too tight, the bearing gear can be re-added;

4. When loosening, the bearing chamber of the end cover can be enlarged and then set, and the bearing chamber can be reworked when it is too tight;

5, remove and reload, so that the bearing is evenly stressed.

Fault phenomenon four: the motor casing is charged

Possible Causes:

1. Winding insulation damage;

2, the winding is damp;

3. The lead wire is damaged or the dust is too much.

Approach:

1. Repair the insulation and dry it with dipping paint;

2. Drying or dipping paint drying;

3. Replace the leads and clean the dirt.

Fault phenomenon five: the foot breaks

Possible Causes:

1. The anchor bolts are not tightened;

2. The installation plane is not flat enough.

Approach:

1. Regularly tighten the bolts;

2. Rework the mounting plane.

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