The specific judgment and maintenance methods are as follows:
1. After switching on the power without reaction.
Most of the power supply plug, power leads and motor winding circuit caused by.
2. Difficult to start or can not be started, and with the "buzzing" sound.
Maintenance available small bamboo sheet according to the rotation direction of rapid shifting wind leaf, if the motor to work quickly, that is start capacitor is damaged or the start winding should be replaced the same capacity capacitor or repair the startup winding; if the motor card is, mechanical failure of the motor and
pump head, such as the damage of bearing, impeller stuck.
3. The motor can run, but the speed is slow, and the casing is overheated, there is a burning smell.
Most are caused by short circuit of motor winding, dismantle the motor optic damage respectively adopts a welding, jumper, isolation, rewind and other measures to repair.
4. The operation of large noise, large vibration.
Most of the bearing damage or bearing chassis and the mismatch, need to dismantle the motor to check, if the bearing is damaged should be replaced; if the bearings "running round", the pump shell with surface using chisel flowers; if the bearings "running in the round", the motor shaft wear parts of the chisel flowers processing, serious wear and tear, the first turning method for repair welding.
