Troubleshooting Three and Single Motors

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Three-phase and single-phase motors are similar in their operation. Since each of the motors has some parts that are different, there are a few differences in the tests that should be made for each motor. The troubleshooting procedure should be broken into several sections. These sections are based on the types of symptoms the motor presents when it's not operating correctly. The procedures listed in this section are presented in sequence of the problems that are most likely to occur to problems that are least likely to occur. You should adopt the same type of philosophy when you begin to troubleshoot the motor. You should always begin by looking for the faults that are most likely to occur, and move on to faults that are least likely to occur. You should also perform simple tests first and complex tests later. This type of procedure will allow you to find the majority of problems or faults with the simple tests.

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