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1. The main points of the installation of the pump The installation position of the pump should meet the requirements of suction vacuum height, the foundation must be level, solid, to ensure that the direction of rotation of power machinery and pump rotation direction. Pumps and power machines with shaft coupling, to ensure that the shaft in the same line, to prevent unit operation vibration and bearing single-sided wear; if the tape drive, the shaft should be parallel to each other, the tape wheel alignment. If there is more than one unit in the same room, the distance between the unit and the unit should be over 800mm between the unit and the wall. Pump suction pipe must be well sealed, and to minimize the elbow and gate valve, filling the water should be drained when running, the tube should not accumulate during operation of the air pipe, requiring suction pipe was slightly inclined and pump inlet connection, the inlet should have a Submerged Depth. The reserved hole on the basis of the pump should be poured according to the size of the pump. 2. Common pump failure analysis and treatment methods Different types of pumps, the failure of the performance of different forms, but summed up, has the following common features. (1) the cause of insufficient flow rate: the impact of insufficient pump flow is the suction pipe leaks, the bottom valve leaks; inlet blockage; bottom valve into the water depth is not enough; pump speed is too low; seal ring or impeller wear too large; Wait. Treatment: check the suction pipe and the end of the valve, block the leakage source; clean the silt or plug at the inlet; bottom valve into the water depth must be greater than 1.5 times the diameter of the inlet pipe to increase the depth of the bottom valve into the water; check the power supply Voltage, increase the pump speed, replace the seal ring or impeller; reduce the installation location of the pump, or replace the high-lift pump. (2) Excessive power consumption Cause: The pump speed is too high; the pump spindle bending or pump spindle and motor spindle is not concentric or not parallel; selection of pump head is not appropriate; pump inhalation of sediment or plug; motor ball bearings damaged . Treatment: Check the circuit voltage, reduce the pump speed; Correction of the pump spindle or adjust the relative position of the pump and the motor; Use the appropriate lift pump; Clean up the sediment or plug; Replace the motor ball bearings. (3) The pump vibrates violently or causes noise: The pump is not installed firmly or the pump is installed too high. The motor ball bearing is damaged. The pump spindle is bent or not concentric with the motor's spindle, not parallel. Treatment: install a steady pump or reduce the installation height of the pump; replace the motor ball bearings; correct the bending of the pump shaft or adjust the relative position of the pump and the motor. (4) Drive shaft or motor bearing overheating causes: the lack of oil or bearing rupture. Approach: add oil or replace the bearing. (5) The pump does not produce water causes: the pump body and suction pipe did not fill the diversion; moving water level lower than the pump drainage pipe; suction pipe rupture. Approach: Exclude the end of the valve failure, filled with diversion; reduce the pump installation location, so that the filter under the water level, or wait for the water level up the filter pipe and then pumping; repair or replace the suction pipe.