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1. Pay attention to the load current of the motor and do not exceed the
additional current on the nameplate. If it is three-phase communication, you
should also pay attention to whether the three-phase current is symmetrical, and
the difference should not exceed 10%.

2. Pay attention to the change of power supply voltage. The deviation between
the voltage change value of the motor and the extra voltage value is ±5%. Within
the range, the three-phase communication voltage is required to be basically
symmetrical, and the difference should not exceed 5%. At this time, the extra
frequency should be maintained.

3. Pay attention to the heating condition of each part of the motor and
whether it exceeds the limits of the rules, so as to adopt measures in time.
When touching the cast iron shell by hand, the hand feeling caused by different
temperatures can be used as a reference to determine whether the motor is
overheated.

4. Pay attention to the abnormal vibration, noise and burning smell of the
motor.

5. If abnormal phenomenon is found in motor operation, eliminate the cause in
time, or if personal accident occurs, keep quiet, cut off the power supply
immediately, check and rescue.

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WUXI JINDA MOTOR CO., LTD.

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