Fault phenomenon Main reason Remedy The pump can not be rotated 1, the line is different or wiring error 2, the fuse burned 3, motor damage 4, impeller stuck 1, check the power line 2, replace the fuse 3, repair 4, Flexible rotation of the shaft pump can rotate but no water supply 1, insufficient water injection 2, inlet pipe leakage 3, suction stroke is too high 4, impeller damage 5, speed is too low 6, the pump reverses 1, re-injection, filling 2, check the pipeline , Sealed with sealing material 3, adjust the suction or use a higher suction pump 4, replace the impeller 5 Check the motor is damaged, the voltage is too low 6, re-wiring less water 1, the pump has air 2, the impeller inlet ring The radial clearance is too large, so that the pump back to produce 3, the pipeline partially blocked 4, the voltage is too low, resulting in speed down 1, check the leak site to be sealed 2, replace the worn impeller 3, down 4 clean power supply voltage Leakage 1, seal damage 1, replace the seal (shaft seal or O-ring) is not enough pressure 1, the water pipe resistance loss is too large 2, the output height exceeds the pump rated head 1, shorten the pipe or increase the diameter 2, Re-purchase the right pump Pump vibration or noise 1, the pump group is not installed 2, inflow or inlet pipe into the water level depth is not enough 3, the pump impeller cavitation 4, the pump deviation from the normal operating point 1, strengthening the pump connection and Support parts 2 sealed with sealing material Leakage or lengthen the depth of the inlet pipe 3, reduce the installation of the pump or increase the inlet diameter or increase the inlet pressure and replace the damaged impeller 4, try to adjust the pump at the rated point and the pump High-efficiency operation, to avoid running the pump at high flow point Heat generated by the motor to burn a large noise 1, the ambient temperature is too high 2, the motor load is too heavy, the pump overload operation 3, the fast or too low or lack of phase 4, Water 5, the unit is not installed 6, the motor is not rotating 1, to improve the working environment of the pump, check the fan is normal, air duct is blocked 2, the pump stuck phenomenon, downtime maintenance; or bearing damage, replace the same model Bearing or large flow pump operation, adjust the pump at the rated point and pump high efficiency zone operation, or fluid medium concentration 3, the rated power voltage 4, disassemble drying and maintenance, to prevent water from the shaft hole at the junction box and junction box Enter at 5 machine, the fastening parts each supporting a pump 6, rewiring, change the direction.
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