One of the reasons why the vortex air pump burns out due to excessive temperature caused by routine malfunctions is due to phase loss operation.
Firstly, the motor cannot start, even if it can start without load, the speed slowly increases and there is a buzzing sound; The motor emits smoke and heat, accompanied by a burning smell.
Generally, when the motor end cover is removed, it can be seen that 1/3 or 2/3 of the pole phase windings at the end of the winding are burnt or turn dark brown.
Final solution:
1. Poor contact or mechanical damage to the fuse circuit of the power supply circuit of the vortex air pump motor, resulting in the melting of a certain phase fuse.
2. The specifications of the three-phase fuses in the motor power supply circuit are different, and the fuses with smaller capacity are blown. The fuse should be replaced with the same specification according to the power of the motor.
3. Poor contact (burning or loosening) of switches (isolating switches, rubber cover switches, etc.) and contactors in the power supply circuit of electric motors. Repair and adjust the moving and stationary contacts to ensure good contact.
4. A certain phase of the line is missing. Identify the broken wire and connect it securely.
5. Poor contact caused by virtual welding between the winding connections of the vortex air pump motor. Carefully check the connection wires of the motor winding and weld them firmly.
