1, the motor coil is burnt out. Remove the burnt coil, replace it with a new one, and maintain the motor by impregnating insulating paint to enhance insulation.
2. When dismantling the burnt winding, measure the wire diameter, count the number of turns and span of each turn, remember the connection mode, and clean up the sundries in the slot. Coils with the same parameters are rolled off one by one according to the specified requirements, and the process shaping is carried out to make the exposed coil heads at both ends of the stator equal.