Pump Run Time

Have you tried lubing the pump basket lid o-ring?

Also, check the o-ring for any cracks.
Yes, I lubed it with silocone grease when I opened it up to clean it. I also cleaned and inspected the o-ring. Seemed OK.

I found this Hayward tutorial on pump sizing a few years ago. If you really want to get into the math of pool pump flow.
This is awesome. Thanks for sharing it. I agree that it sort of perpetuates the myth, but the explanations on TDH are great.
 
You can also read this if you are interested:

 
You gave me hope, but no I checked and it is inserted correctly. The arrow in the cover matches the arrows in the body as well as arrows in inlet/outlet.
This is your return line and the water flows opposite the arrows!
 
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This is your return line and the water flows opposite the arrows!
Wait, are you saying the entire fitting is backwards? I thought you meant the cell that you can take out to clean, but you're referring to the entire housing??

I went out and checked and indeed, it seems to be backwards. The pipe that feeds it is coming from the heater which I believe is the next to last element in the chain before going thorugh the salt cell. Would this be causing the issue?

I'm emailing Jandy and they want to send a rep out because they too find it odd that the pump will not hold the pump full of water when reducing RPMs.
 

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Same purpose as a flow switch. When flow stops, gas accumulates and breaks the circuit. I would still call it a flow switch or perhaps flow "detector".

It is still possible that the flow direction could affect the sensor depending on it's placement but maybe not always.
 
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In Australia, the SWGs are required to have a gas trap and that is why they all have this awkward and goofy plumbing design.

The cell has to trap the gas so that the sensor loses conductivity from the two points in the cell testing for conductivity through the water.

1675353731492.png

 
Those types of cells are notorious for shutting off on low speed of a VS pump because it does not have enough flow to evacuate the gas. I think they more of a hazard than a benefit. I have seen people installing them upside down to get around the problem which of course defeats the purpose of the sensor.
 
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Interesting that the flow switch answers the question “Is there water flowing so it is OK to generate?”

The gas trap is probably safer by answering “Is there gas accumulating so the cell must shutdown?”

If the purpose is to prevent dangerous gas accumulation then the gas trap is probably a better and more reliable method.
 
Heaters use a pressure switch and call it a flow switch even though it does not detect flow.

The conductivity sensor in the gas-trap design only detects conductivity and not flow, but they call it a flow sensor.

In any case, it should be installed correctly because the manual says several times to make sure that the arrows are pointing in the direction of flow, so maybe it matters.

They can use unions to reverse the cell.

I think that the pump issue is probably unrelated to the cell issue.
 

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