一,Pumps can not start the cause analysis: 1. packing too tight or impeller and pump body between the accumulation of debris and blockage. 2. pump shaft, bearings, leakage reduction ring rust. 3. pump shaft serious bending, etc..
二, the pump can not start the solution: 1. relax the packing, dredge the diversion tank 2. disassemble the pump body clear debris, rust 3. remove the pump shaft correction or replacement of the new pump shaft.
三,the flow of insufficient cause analysis: 1. more suction pipe leakage, bottom valve leakage inlet clogging 3. bottom valve into the water depth is not enough, the pump speed is too low 4. sealing ring or impeller wear and tear 5. suction height exceeds the standard
四, the flow of insufficient solutions: 1. check the suction pipe and the bottom valve, blocking the source of leakage. 2 to clean up the inlet at the silt or clogging 3. increase the depth of the bottom valve into the water depth of bottom valve into the water must be greater than the diameter of the inlet pipe 1.2 times the diameter of the inlet pipe, the depth of the bottom valve into the water. Must be greater than 1.5 times the diameter of the inlet pipe. 4. Check the supply voltage, increase the pump speed, replace the sealing ring or impeller. 5. Replace the sealing ring or impeller 5. Reduce the installation position of the pump, or replace the high head pump
五,Suction on the water cause analysis: 1. Air in the pump body or air intake pipe, or the bottom valve is not closed tightly. 2. Filling of the diversion is not enough, vacuum pump packing leakage is very strong. 3. Gate valve or flap door Close not tight
六, Suction on the water solution: 1. First the water pressure up, and then fill the pump body with water, and then boot. At the same time, check whether the backstop valve is tight, piping, joints, there is no air leakage, if you find leakage suction can not be on the water and gas, disassemble the joints in the joints coated with lubricating oil or blending paint, and tighten the screws. 2. Check the pump shaft oil sealing ring, if the wear and tear of the serious should be replaced with new parts. 3. Pipeline leakage of water or air leakage. May be set up when the nut is not tightened. If the leakage is not serious, you can apply cement in the place of air or water leakage, or apply cement slurry mixed with asphalt oil. Temporary repairs can be coated with some wet mud or soft soap. 4. If the leakage in the joints, the wrench can be used to tighten the nut, if the leakage is serious, it is necessary to re-disassembly, replacement of cracked pipes. 5. Reduce the head, the pump's mouth pressed into the water 0.5m.
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