Just renovated our old 15k inground gypsum pool which had been shut down for 2+yrs due to needing resurfacing. I replaced a Hayward 1hp superpump and sand filter with a Jacuzzi 1.85hp variable speed and Jandy quad cartridge filter. We moved all the equipment about 30 feet father from its original position. I have three 1.5" supply lines and two 1.5" return lines coming from the pool. With the added distance from the pool I tied into the 1.5" pipe with 2" to try and overcome the extra distance.
My problem is when I start the pump, it never fills all the way to the top unless I have the pump wide open which is pulling about 90gpm according to the Flow Vis H2flow gauge. and even with that it has bubbles in the basket. My filter gauge reads about 8psi at this speed. When I reduce the speed down to 38gpm where I would like to keep it (or lower) the water in the pump slowly drops throughout the day and the filter gauge reads 0. I still have flow to the pool. I have looked for suction side leaks for the past week trying smoke, soapy water, running water over the old Jandy valves that I bought new "never lube" guts for without success. I'm at my wits end trying to figure out why . Is my pump not strong enough to supply enough water to the pump at slower speeds, or is the bubbles at a higher speed "cavitation bubbles" because its pulling to hard, or is there not enough back pressure from the cartridge filter, or is there a bigger problem with a leak under the pool... I just don't know. I'm new to all this pool stuff so any experience/advice you want to share would be greatly apricated..
My problem is when I start the pump, it never fills all the way to the top unless I have the pump wide open which is pulling about 90gpm according to the Flow Vis H2flow gauge. and even with that it has bubbles in the basket. My filter gauge reads about 8psi at this speed. When I reduce the speed down to 38gpm where I would like to keep it (or lower) the water in the pump slowly drops throughout the day and the filter gauge reads 0. I still have flow to the pool. I have looked for suction side leaks for the past week trying smoke, soapy water, running water over the old Jandy valves that I bought new "never lube" guts for without success. I'm at my wits end trying to figure out why . Is my pump not strong enough to supply enough water to the pump at slower speeds, or is the bubbles at a higher speed "cavitation bubbles" because its pulling to hard, or is there not enough back pressure from the cartridge filter, or is there a bigger problem with a leak under the pool... I just don't know. I'm new to all this pool stuff so any experience/advice you want to share would be greatly apricated..
Before we go down the hydraulics road with pump sizing and such, let's confirm a few simple items first:
