Nordson 25B - User Manual

Other manuals for Nordson 25B

Questions and Answers:

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Tracy BallSep 8, 2025
How to troubleshoot Nordson 25B failing to siphon material?
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  petersenkimberlySep 8, 2025
  If your Nordson Water Pump isn't siphoning coating material, start by checking the siphon strainer screen, rod, and hose for blockages and clean them if necessary. An air leak in the siphon system could also be the cause; inspect the siphon hose and connections, removing old sealant and applying PTFE tape before reconnecting. If the coating material is too viscous, this can hinder siphoning; check the material viscosity and add solvent to lower it. Finally, the siphon hose might be too long, have too small of an ID, or the strainer screen might be too fine for the coating material; use a correctly sized siphon hose and check the strainer screen, opting for a coarser mesh screen if it's clogged.
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Derek MatthewsSep 10, 2025
What to do if Nordson 25B Water Pump runs after valves are closed?
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  Christine MoralesSep 10, 2025
  If your Nordson Water Pump continues to operate even after the drain and circulation valves are closed and spray devices are off, several issues could be the cause. First, check if the coating material supply is low, causing the pump to siphon air, and fill the supply container if needed. A leaking drain valve can also cause this issue; rebuild or replace the drain valve. Additionally, a leaking circulation valve or ball check valve might be responsible; inspect the circulation valve and replace the needle and seat if necessary, or rebuild the ball check valves.
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jasonmillerSep 12, 2025
Why does Nordson Water Pump stroke irregularly?
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  Michael BellSep 12, 2025
  If your Nordson Water Pump strokes irregularly when the spray device is triggered, it could be due to several factors. Air in the hydraulic system can cause this; purge the air from the system and consider adding defoaming agents to the coating material. If the coating material temperature is too high, cavitation may occur; lower the heater thermostat setting. Additionally, a worn or clogged ball check valve in the hydraulic section could be the problem; flush the pump with a compatible cleaning solution, and if the issue persists, rebuild the ball check valves. Finally, worn packings can cause irregular strokes; replace the packings to resolve this.
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Adam LeeSep 15, 2025
Why does my Nordson 25B Water Pump have tails in the spray pattern?
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  Richard BennettSep 15, 2025
  If your Nordson Water Pump's spray pattern has tails of unatomized coating material at the outer edges, it could be due to low hydraulic pressure or a partial blockage in the system; increase the air pressure and flush the system with a compatible cleaning solution. If the material is too viscous, this can also cause the issue; add solvent or heat to the coating material to lower the viscosity. Lastly, a damaged nozzle or fluid tip can be responsible; replace the nozzle or fluid tip to correct the spray pattern.
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aaronsimpsonSep 17, 2025
What to do if Nordson Water Pump doesn't stroke when valve opens?
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  deborahmooreSep 17, 2025
  If your Nordson Water Pump does not stroke when the circulation valve is opened, it could be due to a clogged circulation valve or a blockage in the system; try fully opening and then partially closing the circulation valve, and if the problem persists, flush the system with a compatible cleaning solution. The issue may also be a lack of compressed air supply or low air pressure; check the air supply at the drop-leg drain valve and ensure the regulator is working correctly.
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Alexander WelchSep 18, 2025
Why does the solvent cup overflow on Nordson 25B?
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  steindaltonSep 18, 2025
  If the solvent cup overflows often on your Nordson Water Pump, it's likely due to worn upper packings. Replace the packings, ensuring that both upper and lower packings are replaced simultaneously.