Pump delivery flow inadequate, low pressure causes of failure: First, the pump output pipe resistance Large Exclusion: 1 output pipe layout is correct, the pipe diameter can not be too small, the pipe corner is too much 2 check the valve is flexible 3 appropriate Open the outlet valve, until the operating point two, the oil in the water, gas more Elimination method: 4 oil in the water, bubble control at about 100 ℃ -120 ℃ temperature, slowly exhausted, can be gradually warmed to the operating point 5 pipeline layout is reasonable 6 install the exhaust valve Third, the pipeline and impeller flow blockage Exclusion: 7 clear the pipeline and the impeller flow path debris 8 check the valve gate valve failure Fourth, the import filter plugging method: 9 regular Cleaning filter 10 mesh mesh can not be too close five, the pump inlet sealing ring and impeller sealing ring serious wear and tear Removal method: 11 replacement of wear parts 12 pump suction diameter less than or equal to 100mm, the mouth ring gap greater than 1.5mm Should be replaced; inhalation diameter greater than or equal to 125mm, the mouth ring gap greater than 2mm, should be repaired and replaced six, speed and steering is not correct Exclusion: 13 Check the speed value ( Tachometer measurement) 14 check the line connection 15 is the reverse operation of seven, the viscosity of the transmission fluid viscosity deviation from the basic value of the exclusion method: 16 when the media deviation from the ordering parameters should be made to the factory inquiry eight, the device NPSH S is too low Steam margin is too low) Remedy: Check the high tank level adjustment if necessary 18 The pump inlet valve is fully open and check the filter 19 When the high tank to the pump inlet pipe resistance is too large,
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