The daily maintenance of motor protectors mainly depends on three aspects: daily maintenance, full-process safety inspections and regular maintenance. Daily maintenance needs to be adjusted differently according to the actual use status and site of the protective device, and cannot be generalized.

1. The surface of the motor protector must be kept clean. If there is too much dust, it is easy to cause the overall grounding resistance of the protector to decrease, causing common faults. Especially in some dusty workplaces, this must be paid attention to every day.

2. Regularly check whether each output input terminal, contact or software contact of the motor protector is in good condition? Is there any situation such as human body overheating or electrode connection wire damage due to poor contact? Are the mounting locations of protective devices and connectors secure?

3. Check whether the indicator light, digital display tube or display screen of the protective device are normal?

4. Is the set current consistent with the original preset value? Especially for protective devices that use potentiometer knobs and DIP switches to operate components, it is easy to change the original preset value due to random adjustments by the operator.

Therefore, for the motor protector itself, if the on-site workers cannot properly install and use it, and do not maintain it regularly, the service life of the protector will not be long even if it is of the best quality.

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