Filter Pressure Too High...?

[sktn77a]

Lousy outcome, but at least I know what's going on now. If the pipe completely closes, I can run an above-ground line to filter the pool until I figure out a proper fix. Might do that anyway to relieve the pressure on the pump and save some electricity.

MIght want to do it anyway as a confirmatory diagnostic, before you go digging up concrete (see below).

For those who have dealt with pool builders before, is it common for them to have horizontal boring machines that allow them to drill horizontally under the concrete? If so, it would be relatively simple to run a line under the grass surroudning the pool and then drill under a few feet of deck.

I've never seen one - it's easier just to dig up the old cement and dig down to the pipe, and what's left is your problem!

 

[mculik5]

Just a quick update...fortunately/unfortunately, the crushed pipe diagnosis has been confirmed. I ran a temporary, above-ground return line today. At max pump speed (3450 RPM), I'm seeing 63 GPM at 14 PSI vs. 32 GPM at 29 PSI with the crushed pipe... See pics below. Will probably leave the temporary return up for the rest of the season except when we have family/friends over, since it will save me some electricity and improve filtering efficiency.

Again, thanks for all your help!

 

[sktn77a]

Oh dear, that's a bummer! Have you absolutely confirmed a crushed vs plugged return (with a better/professional camera)? At least the temporary fix will give you time to research options - cutting the concrete should be at the bottom of the list!