Hypro 2410-b pump issue....

[spf8298]

I run hypro 2410 plunger pumps in my self serve bays, and the bay pump that gets used the most is having an issue. It still has good pressure, but it acts like an engine that has a minor ‘miss’ to it. When you run the bay at full pressure you can feel it in the gun. It’s not the ‘machine gun’ effect like when the valves go bad, it’s just an intermittent miss. Any suggestions on where to investigate first?

 

[MEP001]

It could be a bit of air entering the system, which can happen anywhere in the plumbing or from worn low pressure seals, and it can be caused by a piece of debris in one of the valves, intermittently keeping it from closing completely.