Doseuro D Series - User Manual

Questions and Answers

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Priscilla WadeAug 10, 2025
Why is my Doseuro D Series Water Pump making excessive noise?
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  Judith FieldsAug 10, 2025
  If your Doseuro Water Pump is making excessive noise, start by checking for air entering the pump head, inspecting the suction pipe, pipe junctions, valve rod seals, and instrument connections. If air is entering through the stuffing box, adjust or replace it. Inspect the valve units for any foreign material and clean or replace components as needed. Replace worn parts if the valves are lifting excessively. If the noise is due to the pressure relief valve or other accessories in the discharge pipe, consider that a quick closing of a valve, solenoid valve, or cock can produce a water hammer. In that case, a pulsation dampener before the back pressure valve may be required, or a different type of valve may be needed.
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Christopher RoseAug 14, 2025
What to do if I see fluid leak from the hole under the lantern of Doseuro D Series Water Pump?
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  Lawrence KerrAug 14, 2025
  If you notice fluid leaking from the hole under the lantern of your Doseuro Water Pump, it could be due to a damaged piston seal gasket or a scratched piston. The solution is to replace the seal gaskets or the piston.
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kenneth09Aug 18, 2025
What causes the pumped liquid to mix with hydraulic chamber oil in Doseuro D Series?
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  oliviaconradAug 18, 2025
  If you observe the pumped liquid mixed with hydraulic chamber oil in your Doseuro Water Pump, it's likely that the diaphragm is broken. You should evaluate the condition of the components. If damaged, replace the diaphragm and any "OR", the oil reservoir, the piston, and the seal gaskets. Then, run the filling procedure.
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Shelly FriedmanAug 23, 2025
Why is the liquid pumped leaking from the hole under the lantern in my Doseuro Water Pump?
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  Joshua Payne MDAug 23, 2025
  If the liquid pumped is leaking from the hole located under the lantern of your Doseuro Water Pump, it indicates that the diaphragm is broken. Replace the diaphragm and evaluate the state of components, replacing them if damaged.
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Ryan LopezAug 27, 2025
What does it mean if the recirculation valve oil visibly oscillates downwards in Doseuro D Series Water Pump?
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  Jeremy PollardAug 27, 2025
  If the recirculation valve oil visibly oscillates downwards in your Doseuro Water Pump, it suggests an obstruction on the suction path or excessive pressure drops from the hydraulic circuit. Calibrate the RESET valve and check the filter and shut-off valves installed along the path.
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Jeffrey CunninghamAug 31, 2025
What does it mean if the recirculation valve oil visibly oscillates upwards in Doseuro D Series Water Pump?
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  Cheryl AtkinsAug 31, 2025
  If the recirculation valve oil visibly oscillates upwards in your Doseuro Water Pump, it indicates an obstruction on the delivery path or excessive pressure drops from the hydraulic circuit. Calibrate the RECIRCULATION valve and check that the shut-off valves installed along the path are open.
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James OwensNov 5, 2025
How to fix low discharge pressure and low flow rate in Doseuro Water Pump?
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  Brittney FernandezNov 5, 2025
  To address low discharge pressure and flow rate in your Doseuro Water Pump, start by cleaning the suction filter and inspecting the suction pipe and feed tank for any obstructions or partially closed valves. Also, check the pressure relief valve for leaks and switch off the pump if necessary. Ensure the pump is fully primed by verifying the suction height, adhering to the NPSHr value, and installing a suction diaphragm. Verify the correct wiring sequence on the motor plate and check the phases. Inspect and clean or replace dirty pump valves. Replace any damaged piston seal gaskets or the piston itself. Examine the suction pipe for air intake, checking pipe junctions, valve rod seals, and instrument connections, and verify the pipe diameter and route. Increase suction pressure or reduce suc...