Take the explosion -proof gourd as an example to introduce it.

First of all, to detect whether the power supply has electricity. The ordinary method is to use the electrical pen. On one side, this is the first step. If it is normal, detect the second part, detect the explosion -proof gourd line, whether there is poor contact, etc. If there is, if there is, if there is, if there is, if there is, if there is, if there is, if there is, if there is a bad contact, etc. If there is any poor contact. If the line is disconnected or exposed to poor contact, it should be delivered to the maintenance in time to avoid burning the motor caused by the lack of the power supply. Last step: Look at the voltage situation, if the voltage is too low, you must not bring it, you must not work normally. If the voltage is normal, you should check the motor in the front. The problem, the repairs that can be repaired and not repaired, and the external reason is that it cannot be overloaded, and the overload can also cause the gourd to work properly.