1. When using step-down starting for DC motors, the starting time should be properly controlled. It should not be too fast or too slow, and the starting current should not be too high (usually 1-2 times the normal current).
2. When starting a DC motor, it is best to be prepared to stop it. Once an unexpected situation occurs, stop immediately to find the fault.
3. When a DC motor is started directly, the current is very large, which will have a great impact on the power supply and the DC motor itself. Therefore, unless a very small DC motor can be started directly, ordinary DC motors must take voltage reduction measures to limit the starting current.
4. When the DC motor is running normally, you need to observe whether it is running normally, whether the sound and vibration are normal, whether the temperature is normal, whether there is any smoke problem, if so, stop the machine immediately to find the cause.
5. Measure the temperature of each part of the motor to see if it is normal. (Motor body ≥70℃, fan motor body ≥65℃, backpack ≥55℃, front and rear bearings ≥60℃ are considered abnormal).
6. Is the motor working normally? If so, carefully check the location of the source.
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