In order to improve the submersible sewage pump life, and now most of the domestic and foreign manufacturers are wanted on the pump protection system approach, which leak in the pump, capable of automatic alarm overload, overtemperature faults, and automatically shutdown equipment repair. But we believe that the system set up to protect the submersible sewage pump is necessary, it can effectively protect the safe operation of the electric pump. But the key is not the problem, the protection system is only a remedy after a pump failure, is a more passive approach. The question should be fundamental to proceed, completely solve the problem pump seals, overload, etc., this is a more proactive approach. To this end we expeller hydrodynamic pump seal technology and design technology used without overload submersible sewage pump, the pump seal greatly improved reliability and load capacity, extend the life of the pump. Submersible submersible pumps are often encountered in the use of oil spills, leakage, trip, head reach, impeller does not turn, low flow, low speed problem, the following questions for these common faults detailed analysis: 1, impeller speed low , head reach Many customers bought to start using a submersible pump, found that the actual lift lift not up to standard, measured and found to have a low speed. This may be wired incorrectly 100WQ70-15-7.5 pump, it is recommended to change my line of fire. There may be a submersible pump is poor, head reach. 2, submersible water pumps, weakness, remove the submersible pump flow is small 100WQ100-15-7.5, check 100WQ70-22-7.5 flexible rotor pump, powered rotor can turn. Dismantle pump inspection found loose between the lower end of the shaft and submersible pumps, and the rotor down, so the rotor weakness, output power is small. Using appropriate gasket between the rotor and the bearing pad, so shifting the pump rotor, installation commissioning, failure can be ruled out. 3, the power, do not turn the impeller submersible pump after power has buzzing hum, do not turn the impeller. Cut off the power, struck at the impeller intake, if dial does not move, indicating that the rotor is stuck. Submersible pumps can be disassembled to check whether the lower rotor bearing ball crushing lead stuck rotor; if toggle wheel, but the wheel does not turn electricity, failure may be badly worn bearing, when power generated in the stator magnetic rotor suck but can not rotate. Replace the bearings reassembled pumps, flexible impeller struck troubleshooting. Pumps common faults and analysis 100WQ100-15-7.5, pumps, sewage pumps, Ltd. provided by Anguo stone yuan pump. Anguo Shi Yuan Pump Co., Ltd. (www.shiyuanbeng.com) strong, credible, in Baoding centrifugal pumps and other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead you hand pumps and stone yuan into the brilliant, for a better future!