Dear ProBrewer Sages,
I have a few thomson centrifugal pumps in my brewery. Two brewhouse pumps and a CIP pump. I have several issues that seem to be compounding.
First: Lately my pumps haven't been priming correctly unless there is a large volume of liquid in my tanks. They seem to pulse a small amount of water forward. When I shut them off air bubbles out of the intake. Obviously air is the problem, but what is causing it to intake air after priming? I worry I may have seal issues or something. But I have taken apart and inspected all the pump heads.
Second: Any idea how far away my centrifugal blades should be from the back plate? I can't seem to maintain a proper gap since tinkering with my pumps. It is either too close and grinds or is too far away and doesn't spin at all.
Third: What do I need to know about maintaining a centrifugal pump?
Thanks for your time,
Cole Brown
Eagle Creek Brewing Company
Edit: Sorry spelled pump brand wrong.
I have a few thomson centrifugal pumps in my brewery. Two brewhouse pumps and a CIP pump. I have several issues that seem to be compounding.
First: Lately my pumps haven't been priming correctly unless there is a large volume of liquid in my tanks. They seem to pulse a small amount of water forward. When I shut them off air bubbles out of the intake. Obviously air is the problem, but what is causing it to intake air after priming? I worry I may have seal issues or something. But I have taken apart and inspected all the pump heads.
Second: Any idea how far away my centrifugal blades should be from the back plate? I can't seem to maintain a proper gap since tinkering with my pumps. It is either too close and grinds or is too far away and doesn't spin at all.
Third: What do I need to know about maintaining a centrifugal pump?
Thanks for your time,
Cole Brown
Eagle Creek Brewing Company
Edit: Sorry spelled pump brand wrong.
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