My Pool Pump Has Lost It Pressure? The Dolphin Pool Cleaner?

I have an inground pool, with a spa and waterfall with operates with Jandy valves. The pressure of the return has significantly decreased, I can tell by the overflow from the spa to the pool isn’t as steady as it used to be. I have cleaned the skimmer baskets, and made sure openings there are open, valves are in correct position, the cartridge filters are clean (cleaned twice to verify and make sure seal is good even put some jelly on it), and the return is set to pool only (although 1 jet in spa is also activiated in the pool return), and the basket near the pump is also clean. I think the only change I have made recently is I switch from a Dolphin Robitic cleaner to a manual vacuum. The pull from the drains is quite strong, strong enough to get magnolia leaves through the tube, the water is not strong on the way back. The pressure guage on my filter only reads between 0-2 psi when set to pool return and 10 psi when set to spa return, and 0 on waterfall return. No waters leaks either.

Strange. Since you say the intake side is very strong, then the return has to match it. What it really sounds like is a leak or crack in the return line, but you would be losing a lot of water. If it were an air leak, you’d lose suction, not return. Same thing if filters were dirty or a valve stuck partially closed. So I guess what I’m saying here is that if your water level is steady, you’ll need to call a pool contractor in.

Sounds like a clog in the system.  I would disassemble and run some kind of snake through to clean the pipes.  If you have ever disassembled pipes that have been in use you know you will find a lot of garbage on the sides of the pipes.  Steel pipes can fill with rust.  Plastic and copper pipes can build up dirt and oils along the sides and in corners.  All this stuff is really nasty and can sometimes be cleaned with a round soft plastic brush at the end of a snake.

Providing your Guage is accurate (no debris where it screws in or just plane in-accurate) the most likely thing is your pump impeller has debris in it.  A wire coat hanger bent to fit into the pump basket area and into the inlet of the impeller can scape out any lodged debris.  Also, if you manual vacuum is on a hose that attaches to your skimmer, it will affect your flow.  It is like adding that much more plumbing to your suction line.  That, in turn, will reduce your operating pressure.  With out looking at it, these are all educated guesses.

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