So I just got the hard plumbing in on my semi-agp (about 50% buried), and I'm having an issue where my pot partially drains after cutting the pump off. It sounds like air is bubbling back through the filter and pushing water out of the pump pot.
Perhaps related - despite starting and running the pump with the cartridge manual relief valve in both open and closed positions, I have never seen any water coming out of the relief valve.
I figured a video might capture what is happening better, and you can see it here - could the water not be exiting the manual relief valve because the cartridge is partially above the water level? Also, would a check valve between filter and pump solve the problem of air from the filter displacing water in the pot after cutoff?
In case it's helpful - the system was previously connected with the stock hoses and behaved in exactly the same way.
Perhaps related - despite starting and running the pump with the cartridge manual relief valve in both open and closed positions, I have never seen any water coming out of the relief valve.
I figured a video might capture what is happening better, and you can see it here - could the water not be exiting the manual relief valve because the cartridge is partially above the water level? Also, would a check valve between filter and pump solve the problem of air from the filter displacing water in the pot after cutoff?
In case it's helpful - the system was previously connected with the stock hoses and behaved in exactly the same way.