1. Fault cause① The power supply voltage is too low;② Wrong connection of motor in face connection method;③ Open welding or fracture of rotor;④ The local coils of the rotor are wrongly connected and inversely connected;⑤ Too many turns are added when repairing the motor winding;⑥ Motor overload.2. Troubleshooting① Measure the power supply voltage and try to improve it;② Correct connection method;③ Check open welding and breakpoints and repair them;④ Find out the wrong connection and correct it;⑤ Restore the correct number of turns;⑥ Load shedding.

The paper drawing machine will cut the base paper, that is, the paper tray, by the knife roller, and fold it alternately into hinged rectangular paper stacking. The cut paper tray will be processed and folded into face towel paper. After packaging, it will become the paper drawing of the finished product. With automatic paper cutting, automatic embossing and edge embossing, automatic technology, automatic dislocation counting, convenient packaging.

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I don't know. Call a consumer complaint?