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Thx. I am going to replace that check valve as its an older one and see what happens. Thanks again!

Here is a link to the pics of he equiptment. http://s1290.photobucket.com/user/aspeiser1/library/

Having issue posting really small pics at even 61kb??

Thanks mas985! Her are 2 pics.

I do run the panels at 3000 rpm. The fittings between the filter are all PVC with a back flow valves as well. On the roof the panels are connected with PVC and it looks like "rubber" connectors. I am posting a few pics too. I'm not sure what "head loss" is. - - - Updated - - - I had an old...

Thanks for the replies. I just cleaned the filter. I have a Hayward Ecostar variable speed pump. At 3000 rpm it the pressure gauge reads 17psi with the solar valve closed, and 22 psi with it open. The panels are on the 2nd story of our house. Its a bit of length from the pool equipment...

I have an all manual system and when the solar valve is on we continue to get air bubbles in the return lines. I replaced the vacuum release valve on the system. If I turn off the solar the bubbles will go away. It seems like an air leak as the pump has had trouble priming with the system on a...

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It is a manual valve. There is a check valve between the filter and the solar heater valve. It's weird. After the pumps primed the solar works, and after a few hours it will start up and prime withe solar on. The next morning however it won't catch a prime. I'm not sure what a bypass hole in the...

Hello, I am new to the forum. I have an inground pool with a Hayward variable speed pump, a pentair filter and a solar heating system. I am having an issue with the solar heating. The pump will not prime when the solar is turned on. If I close that valve and "turn off" the solar the pump...