1, ã€Start pump does not turn】 Reason: The packing is too tight or impeller and the pump body is clogged with debris; pump shaft, bearings, leak ring rust live; serious axis pump. Remedy: Loose packing, clear the diversion channel: open the pump body to remove debris or rust; to correct the curved shaft or a new pump shaft. 2, after the start of the pump is not water】 ã€reason: the pump air or gas intake manifold; unscrupulous irrigation at the end of the valve is not satisfied with the vacuum pump filling a serious leak; gate valve or shot closed lax. Remedy: remove debris, replace the damaged rubber mat, change the direction of the valve; press or replace the new packing, close the gate valve or the door; increase the amount of irrigation until the deflation plug does not bubble; replace with Cracked tube water; reduce head, the pump nozzle pressed into the water 0.5 meters. 3, the lack of flow】 ã€reason: pump head lift more than the allowable lift; speed does not support or belt slippage, low speed; axial pump blade mounting angle is too small; suction stroke is too high; Impeller defect; serious leakage of water pipes. Remedy: Reduce the lift, restore the rated speed, remove the belt dirt and adjust the belt tightness; adjust the blade angle, reduce the pump installation position; tighten the gland, seal the pump leakage, compression packing or replacement packing; clear the blockage, Replace the impeller; replace the leak ring, plug the leak. 4, the flow from larger to smaller reasons: the filter or the bell is gradually blocked by debris; dynamic water level decreases, the water inlet submerged depth of water is not enough. Remedy: Remove debris, increase the depth of the bottom valve into the water. 5, ã€Run out of water interrupt】 no water or intermittent broken water, less water. â‘ the motor is not started to eliminate the circuit failure; â‘¡ pipe plug, remove the blockage; â‘¢ pipeline rupture, repair welding or praise; â‘£ filter plugging, remove clogs; Invalid, it is recommended to change the pump; â‘¥ reverse pump, power line phase sequence; ⑦ pump case seal ring, impeller damage, replace the new pieces. 6, [motor can not be started, accompanied by buzzing] â‘ If one phase is disconnected, the line is repaired; â‘¡The bearing is held in the shaft, repaired or replaced; â‘¢The foreign body in the impeller is stuck with the pump to clear the foreign body; â‘£The voltage is low, Voltage. 7, [current is too large, ammeter pointer swing] â‘ rotor swept cavity, replace the guide bearing; â‘¡ shaft and bearing relative rotation is not flexible, replace or repair the bearing; â‘¢ due to severe thrust bearing wear, Replace the thrust bearing or thrust plate; â‘£ axis bending, bearing different heart, to send crampons plant repair. 8, [Insulation resistance of motor winding to ground is too low] Motor windings and cable connectors or cables are damaged, replace windings, repair connectors or cables. 9, ã€Unit Vibration】 â‘ Rotor unbalance, except bolts can be fastened loose, the rest of the fault sent to the manufacturer; â‘¡ pump impeller imbalance; â‘¢ motor or pump shaft bending. 10, loose bolts】 ã€reason: pipe or water debris sundry stuffing; packing wear, loose, blocked water seal tube; impeller was broken or loose; Remedy: remove clogs, replace the filler, clear the guide pipe groove, correct installation of water seal; fasten or replace the impeller; reduce the pump installation location, or until the water level rise and then boot. 11, ã€Power consumption is too large】 Reason: high speed; pump shaft bending; leaves around a debris; head is too high. Remedy: Adjust the appropriate speed; correct pump shaft.