Electric Motor in our daily life is a very large amount, at the same time there will be a lot of electric motor problems, My friends ask how to maintain the electric motor?
Of course, the electric motor to be repaired well! "Look, smell and Measurement" is not less!
The following is my summary of the electric motor fault diagnosis and troubleshooting methods.
Analysis of the problem of the Electric motor
look:
observe the appearance of mechanical damage, (such as broken shaft, shell rotten.) Surface color has not turned yellow. (Burnt out)
smell:
smell whether there is a bad smell, the coil burned a special odor. This is the initial method to identify the coil good or bad.
ask:
ask the person who sent it, what is the reason for the motor does not work, is normal in the movement, suddenly do not move, or not move when the machine is turned on, or smell the smell does not move, or also other loud sound for a long time before it does not move. This is the method that allows you to avoid other problems and directly find the cause of the disease. It can let you find the door quickly , without detours, to find the right way to repair electric motors.
Measurement:
use the instrument to measure.
Common problems of electric motor
Coil burned, sweep, open circuit (bad wiring), short circuit, short circuit between turns (motor powerless), leakage, bearings damage, etc.
Coil burned
Symptoms: shell discoloration, odor., check the motor windings, motor shafts as a good situation
Sweeping
Symptoms: shaft rotation inflexible, there is stuck phenomenon. Generally caused by bearing damage.
open circuit
Symptom: No movement when energized, measuring no resistance.
Generally caused by a broken wire head.
Short circuit
Symptom: Tripped after the power is turned on.
The connector touches the wire or coil damage caused by.
Short circuit between turns
Symptoms: motor powerless, slow speed.
Leakage
The wiring head touches the housing or coil insulation aging caused.
Bad bearings
Symptoms: shaft has axial runout, rotation with a grating sound, and there is a jamming phenomenon.
When the bearing is badly damaged, the problem of electric motor sweeping will occur.
The above is a common problem of the electric motor in the factory, as well as the causes of failure, I hope it will help you.
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