Pump daily maintenance methods 1. Routine maintenance. Check the pump power cord, whether there is aging, broken skin, the power cord copper leakage. In this case if the power cord on the shore, you can package the package. If it is in the water most Good is to replace the power cord. Often check the pump impeller for dirt, foreign bodies and other blocked impeller or outlet water, check the sound of the pump is running well, if there are unpleasant sound, indicating damage to the pump bearing, repair, refueling, replacement . Check the pump is running leaks. If leakage, please send the maintenance department for repair. 2. There are three causes of abnormal noise. First, the pump bearing damage, need to be replaced. Second, the pump impeller loose, Coil damage 3. The pump can not be normal water supply for four reasons First, the pump is not a centrifugal pump. Whether the need for water diversion work, two water pump is reversed, if it is reversed, replace the capacitor joint method. Three pump outlet or impeller gap In the presence or absence of foreign objects. Fourth, the pump seal is safe. Pump maintenance and troubleshooting Troubleshooting A no oil discharge 1, the direction of rotation error 2, the pump does not rotate 3, the pump shaft break The rotor does not rotate 4, the suction tube is blocked 5, the fuel tank filter is blocked 6, the fuel tank filter capacity is less than 7, the viscosity of the oil is too high 8, the number of revolutions is less than 9, the suction pipe is poorly sealed 10, On 11, the blade can not slide out of the rotor slot immediately stopped to correct the direction of rotation of the motor, if allowed to continue turning will be burned damaged. Repair the coupling. Repair pump, confirm the number of revolutions, the pressure is above the provisions of the axis is aligned. Inspect the suction line. Clean the filter. Replace the larger capacity, more than double the pump capacity. Change the oil type, set the heater. Specified number of revolutions drive. Inspect the suction line. Refuel to the level meter's baseline. Repair the pump. B noise 1, the suction tube is small, blockage 2, the fuel tank filter is blocked 3, the fuel tank filter capacity is less than 4, the oil viscosity is too high 5, double pump, the suction tube error 6, inhaled air by the suction tube 7, Air is sucked in by the oil seal 8, there is air bubble 9 in the tank, the oil level is too low 10, the vane can not slide out of the vane slot 11, the noise is emitted by the coupling 12, the fuel tank vent hole is blocked or the capacity is less than 13, The provisions of the number of 14, more than the provisions of the pressure 15, bearing wear 16, cam ring wear 17, pump tight tightness 18, pump suction vacuum degree of damage should be 200mmHg the following. Clean the filter. Use a filter that is more than twice the capacity of the pump. Change the oil type, set the heater. Repair piping. Fill in the suction tube, detect the bad place and repair it. Check whether the axis alignment. Check the configuration of the rotary tube. Refuel to the reference level, double pump can not be used separately for different fuel tank. Repair the pump. Coupling damaged new axis misalignment re-assembly. Clean vent or exchange. Check the number of revolutions. Check the pressure gauge. Repair the pump and check if the shaft is aligned. Abnormal wear, Department of oil, oil in the water, oil viscosity and the use of oil temperature. Reassemble the pump to properly tighten the torque wrench. Change the pump. C flow less than 1, no oil discharge 2, the suction vacuum is too large, due to air cavitation caused by cavitation 3, the rotor wear, large internal leakage 4, oil cap tight tight 5, the oil viscosity is too low Check the suction oil filter oil network and configuration (try to use a hose or straight tube). Repair pump properly tightened with torque wrench. Change oil type, install cooler. D seal at the oil spill 1, seal 2, internal leakage replacement oil seal. Repair the pump and check the viscosity of the oil.