6) When diving mud pumps with cooling shroud power must ensure the continued injection of clean cold water, drain and ensure smooth, NSQ, cooling water from the cooling apparatus flows into the lower side, NSQ1250-25-160, the upper end of the outflow from the other side. 7) Use 500V megohmmeter to measure the motor cold insulation resistance should not be less than 50ΜΩ. 8) Note: After the unit normal operation, you should always observe the power supply voltage, current, pump flow and pump vibration is normal. As one of the following occurs should immediately stop inspection:. A operating current exceeds the rated current. B. rated head when pump intermittent water flow decreased 20% or over. C. When the pump work without cooling unit pump motor part out of the water, or volute pumps with cooling device partially exposed when the water. D. Power supply voltage is too high or too low (above 400V or lower than 340V). E. motor insulation resistance below 0.5ΜΩ. F. unit has noticeable vibration and noise. 3.1.4 Pump repair and maintenance of sewage pumps and pump pit visits once a month, NSQ800-45-200, inspection and maintenance records in the "sewage pump inspection and maintenance record" in the year to conduct a comprehensive maintenance, NSQ1000-40-200 and maintenance conditions recorded in "pump maintenance records table". 3.1.5 the pump room of valves, check valves, pressure gauges, pipes, etc. at the same time with the pump maintenance. 3.2 Content 3.2.1 Pump body maintenance 1) Check the pump should be no damage, nameplate intact, indicating the direction of flow clear and precise, neat appearance, paint intact. 2) Check for leaks, if leaks should be repaired immediately. 3) Fill with oil, if oil qualitative change color, impurities, should be replaced. 4) coupling connecting screws and rubber gasket should be replaced if damaged. 5) fastening screw base and do rust treatment. 6) Turn flexible, no stuck phenomenon, the shaft and the motor shaft at the same center line. NSQ800-45-200 | NSQ | sand suction pump (view) provided by the Shijiazhuang-Pump Co., Ltd. faction. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) is Shijiazhuang, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Pump in Shijiazhuang-school leadership with the staff warmly welcome all inquiries negotiations to create the Shijiazhuang-pump send a better future.