1, the shaft broken Magnetic pump shaft material used is 99% alumina ceramic, the main reason for the shaft is broken, because the pump runs dry, the shaft bearing dry grinding shaft twist. Open the pump inspection can be seen when the bearing has been seriously damaged to prevent the pump broken off the main method is to avoid the air pump running. 2, bearing damage Magnetic pump bearings are made of high-density carbon, in case of pump water or pump impurities, it will cause the bearing damage. Cylindrical coupling inside and outside the rotor between the coaxial requirements if not guaranteed, it will directly affect the bearing life. 3, Lack of head causes of such failures are: air in the transmission medium, impeller damage, speed is not enough, Shanghai Gear Pump Factory pumping liquid overweight, excessive flow. 4, insufficient flow caused by lack of flow of the main reasons are: impeller damage, speed is not enough, the lift is too high, the tube is clogged with debris, etc. 5, the magnetic pump can not hit the liquid magnetic pump can not play the liquid pump is the most prone to failure, The reason is more. First of all, check whether the pump suction pipe leaks, check the suction pipe air is exhausted, the amount of liquid filled in the magnetic pump is sufficient, inhalation tube whether there is debris clogging, check whether the pump is reversed (Especially after changing the motor or overhauling the power supply line), you should also pay attention to whether the suction height of the pump is too high. If the above inspection still can not be solved, the pump can be disassembled and checked to see if the pump shaft is broken. Check whether the moving ring and the static ring of the pump are intact, and whether the entire rotor can move in a small amount. If the axial movement difficulties, can check whether the carbon bearing with the pump shaft is too close.
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