QDL, QDLF stainless steel light vertical multistage pump with pump small size, light weight, corrosion resistance, high efficiency and so on. Pump impeller, guide vane and other components are made of stainless steel 304, the use of advanced overall stamping, argon arc welding shape, beautiful appearance, reliable performance. However, long time use of equipment, there will always be a failure, there is a failure to be promptly addressed, the following small series for everyone to analyze QDL, QDLF stainless steel light vertical multi-stage pump common fault. QDL, QDLF stainless steel light multi-stage pump common fault analysis Fault phenomenon Cause of the malfunction 1. The motor starts without turning a) power. b) The fuse burns out. c) Starter overload has been disconnected. d) The main contacts in the starter are not touching or the coil is faulty. e) The control line fuses are defective. f) The motor is faulty. 2. Once the power is turned on, the starter overload jumps immediately. A) The fuse burns out. b) starter overload contact problems. c) The cable connection is loose or defective. d) Defective motor unit. e) The pump is mechanically blocked. f) Overload setting is too low. 3. Starter overload occasionally jump open a) overload setting is too low. b) low voltage at rush hour. 4. Pump flow instability a) pump inlet pressure is too low. b) Absorber / pump partially blocked by impurities. c) Pump into the air. 5. Pump is running but no water a) Suction hose / pump blocked by impurities. b) The base or check valve is blocked in the closed position. c) suction pipe leakage. d) There is air in the suction pipe or pump. e) The motor is rotating in the wrong direction. 6. Reverse pump closed a) suction pipe leaks. b) There is a problem with the base or check valve. c) The base valve is blocked in the open or partially open position. d) Check valve leaks or clogs in partially open position. 7. Shaft seal leakage a) Shaft position is wrong. b) shaft seal is faulty. 8. Noise a) There is air in the pump. b) The pump can not rotate freely (frictional resistance) due to incorrect positioning of the inner shaft of the pump. c) There is resonance at the installation site. Further reading: Canton Fair IFAT China building water pump manufacturers ranking ptc Show article belongs to Internet industry (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor: gogoing (QQ / WeChat:) Starting: http://beng.liuti.cn/ (Service Hotline:)
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