First, steady rise of the motor during normal operation should not exceed the allowable limit, the run should always pay attention to monitor the temperature rise for each part.

    Second, monitoring the motor load current. The motor failure Metropolitan nail Current surge, causing the motor heat. The larger power motor should be fitted with the ammeter monitors the load current of the motor. The load current of the motor should not exceed the nameplate rated current value, or to identify the cause and take measures to eliminate adverse situation to continue to run.

    Third, monitor the supply voltage, frequency changes and voltage unbalance.

    Fourth, note smell, vibration and noise of the motor. Winding will be issued due to high temperature insulation burning smell. Some failures, especially mechanical failure, will soon be reflected as vibration and noise, smell the burnt smell or found abnormal vibration or grazing sound, King buzzing or other noises, you should immediately power failure check.

    Always check bearing heating, oil spills, oil change on a regular basis.

    The wound rotor induction motor, check the contact between the brush and slip ring, brush wear and sparks. If the spark is serious, you must promptly clean up the surface of the collector ring and correction brush spring pressure.

    To keep the cleaning of the interior of the motor, do not allow water droplets, oil and other debris falling into the interior of the motor. Air inlet and outlet of the motor must be kept free from obstruction.