1. After the power is connected to the pump is still not working
It may be because the power plug or line can not drive up, short circuit and other reasons.
2. Bad start or start when there is noise
Maintenance available small bamboo sheet shifting wind leaf, if the motor can be normal operation, that is the starting winding is damaged should be replaced the same capacity capacitor or repair the startup winding; if the motor is stuck, is due to the fault of motor and pump head, such as the damage of bearing, impeller stuck.
3. The motor to run, but the speed is slow, the housing overheating, burning
There may be caused by a short circuit of the motor, the motor should be dismantled to see the seriousness of the damage repair.
4. The operation of noise and 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.
