Doseuro FM 50N-50 - User Manual

Questions and Answers

D
Douglas Nguyen Jr.Aug 19, 2025
Why is my Doseuro Water Pump making excessive noise?
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  frosalesAug 19, 2025
  Excessive noise in your Doseuro Water Pump can be attributed to: * Air entering the pump head. Verify the suction pipe for inlet air and check pipe junctions and seals. * Foreign material inside the valve. Inspect and clean or replace valve units. * Excessive lifting of valves. Replace any worn parts. * Noise caused by the safety relief valve or other accessories in the discharge pipe. A pulsation dampener before the back pressure valve or a different type of valve may be needed.
J
Jennifer SmithAug 29, 2025
What to do if pumped liquid comes out from the hole under the lantern of Doseuro FM 50N-50 Water Pump?
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  April BarrettAug 30, 2025
  If pumped liquid is coming out from the hole under the lantern of your Doseuro Water Pump, the diaphragm is likely broken. Replace the diaphragm and assess other components for damage, replacing them as needed.
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kparkNov 7, 2025
Why Doseuro Water Pump has low discharge pressure and low flow rate?
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  Anne GuerreroNov 8, 2025
  The Doseuro Water Pump might have low discharge pressure and flow rate due to several reasons: * A clogged suction system. Clean the suction filter and check for obstructions. * A worn safety relief/vent valve seat. Inspect the valve for leaks. * The pump is not completely primed, with an air bubble in the suction pipe. Ensure correct suction height, respecting the NPSHr value, and consider installing a suction lung. * Incorrectly connected motor. Verify the motor plate for correct wiring and check the phases. * Dirty pump valves. Inspect, clean, or replace valve components. * Air entering the pump head. Check for inlet air in the suction pipe, pipe junctions, valve stem seals, and instrument connections. Also, check the diameter and piping route. * Insufficient suction pre...