1. The motor cannot start
Reason: It may be due to motor overload, circuit connection problem or mechanical jamming.
Solution: Check whether the circuit connection is normal, use measuring instruments to detect whether the voltage is balanced, and check whether the motor has mechanical jamming.
2. The motor temperature is too high
Reason: It may be due to poor ventilation, overload operation or winding failure.
Solution: Ensure that the working environment of the motor is well ventilated, avoid overload operation, and check the winding regularly to see if it is normal.
3. The motor housing is energized
Reason: It may be due to dampness of the motor or aging of the insulation material.
Solution: Perform insulation test before using in a humid environment, ensure that the motor is dry, and replace aging insulation materials regularly.
4. Motor leakage
Reason: It may be due to dirt on the insulation surface, dampness of the winding or aging of the insulation material.
Solution: Clean the insulation surface of the motor regularly, keep the motor dry, and replace aging insulation materials in time.
5. The motor is running in phase loss
Reason: It may be due to a broken power line, a broken winding or a burnt contactor contact.
Solution: Regularly check the integrity of the power cord and windings, and replace the burnt contactor contacts in time.
Preventive measures
1. Regular inspection and maintenance
Regularly inspect and maintain the motor, including measuring insulation resistance, cleaning ventilation ducts, replacing grease, etc.
2. Strengthen training and management
Improve the operator's ability to judge and handle motor failures to ensure the safe operation of the equipment.
3. Use advanced protection technology
Use intelligent integrated protectors and equip communication devices to monitor the motor status in real time.
4. Ensure a good working environment
Ensure that the motor working environment is well ventilated to avoid moisture and dust accumulation.
5. Limit the number of starts
Strictly limit the number of starts of the motor, especially for fans with long start-up times.
