1, because the transmission fluid inside the pipeline or even cause sundries valve inside the pump body is blocked, will cause water suction pump suction is not on, find the specific jam clearing out clutter can solve the problem.
2, because the installation of the imported pipeline is not reasonable, for example, the number of elbow is too large. The number of elbow should be controlled as many as 1-2 2 elbows. It is better to use 45 degree elbow as well as the diameter of the pipe does not match the caliber of the pump, which will cause the self priming pump to not suck up the water.
3, the self priming pump used for a period of time will suffer from water leakage or corrosion due to corrosion or wear. It will be the reason why the self priming pump doesn't suck up the water. The replacement of new damaged parts will solve the problem.
4, self-priming pump for the first time after the water sucked up second times to use irrigation to suck it up and there is air into the pump body which caused such as self suction pump outlet pipe valve is not installed, because after the export of Unicom will appear stop water flowing atmospheric air will be sucked into the pump body to go inside. Because the air to enter, so the next time you start also need to suck water up to discharge water. The solution of this self-priming pump is to solve the problem by closing the valve and stopping the valve before the exit of the valve and the ball valve are shut down.
5, because the water pipe self-priming pump self-priming pump seal caused by pumping air has been in a state so self-priming pump suction is not on the water, the solution is to check the self suction pump seal repair pipeline leak points such as welding, pipe joints and other suspected leak place should be carefully checked for example can be used to run 5 minutes after stopping to listen to the voice of there is no suction pipeline.
6, the suction height of the self priming pump is higher than that of the self suction pump in the actual installation and application. It is recommended to replace the self priming pump with higher self suction or the submersible pump product is more suitable.
The commonly used product self-priming pump self-priming height of 6 meters in the use of manufacturers marked down the test self-priming height of 4-5 meters, all kinds of products from the actual pump self-priming height is as follows: ZCQ magnetic pump self-priming height of 3-4 meters, ZW Self-priming sewage pump and ZX self-priming centrifugal pump self-priming height 4-5 meters need to know to check ZW Self-priming sewage pump, SFBX small stainless steel self-priming pump self-priming height of 4 meters, vacuum assisted self-priming pump and suck out the water quickly self-priming pump self-priming height of 8-9 meters of the series of products mainly as a larger flow of sewage, flood control, various industries need to know can refer to vacuum suction small flow and high lift pump, high lift self-priming pump self-priming height of self suction height of 30 meters and is mainly suitable for irrigation or domestic deep pumping by flow only about 2 cubic meters need to know can refer to small flow and high lift pump.
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