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[Asia Fluid Network News] China's fire pump variety, the use of relatively large, its main features are: no leakage, corrosion resistance, all sealed. According to different selection criteria, different processes and different use of the environment, the fire pump to play the functions and characteristics are not the same. As its range of use continues to expand, problems with fire pumps also arise, such as when the fire pump is shut down for a while, what are the reasons for this? The fire pump will then run for a while to shut down for diagnostics. Fire pump will shut down after a while running Diagnosis 1) Suction too high Remedy: Check existing net head (inlet line too small or too long will cause great friction loss). 2) impeller or pipeline plugging measures to eliminate: check for any obstructions. 3) Air or inlet line leaks. Check for leaks in the inlet line for cavitation and / or air. 4) Stuffing or seal wear in stuffing box to allow air to leak into the pump casing. Remedy: Check packing or seal and replace as required. Check the lubrication is normal. 5) When pumping hot or volatile liquid Inadequate suction head Elimination measures: Increase the suction head, consult the manufacturers. 6) The end of the valve or inlet pipe immersion depth is not enough Elimination measures: Consult factory for the correct immersion depth, with a baffle to eliminate eddy currents. 7) pump housing gasket damage to eliminate measures: check the gasket and the situation to be replaced. Fire pump operation will be shut down for a while diagnostics analysis, we have been able to find and sum up some experience. We all know that the use of fire pumps is rather special. In many cases, it plays a role of protecting life and property. Accelerating the efficiency of the problems that may arise during the use of fire pumps can not only ensure the use of such products, but also protect Market for these products.