Hello all, first post but long time lurker. I have a few questions about my pool pump and filter. I've never really paid much attention too it until now. First, pool info.
20 X 40 IG Vinyl, 33K gallons.
Hayward Pro Filter S244T with multi-port valve
Pentair SuperFlo Pump SF-N1-1-1/2 HP
Motor label info:
Two skimmers and main drain on suction side, two returns on pressure side. All 1.5 inch piping, no other features attached.
The pool is at least 15 years old, probably older. It was already installed when we bought the house. New liner installed three years ago, new pump and filter installed by pool company four years ago after a tree fell on it. (that was fun)
So...I was lurking as usual and happened across the sticky at the top of this forum, which got me to thinking (this could be good, could be bad ). After reading through it and doing some research, I think I may have an issue and would like to confirm.
The filter pressure gauge reads 18 PSI on a clean filter, and after doing some measurements and "back of a napkin" calculations I am estimating the suction side head at 13. Reading the curve for this pump (and doing more math) it appears that I am pushing around 68GPM, which is above the filter rating on the label of 62GPM.
Is this a problem or close enough?
If I install a smaller motor (say 3/4 HP) I could bring the GPM down, but then I worry about turnover rate. I could get a larger filter (S270T), but that is a bit expensive.
Any thoughts/opinions on this are welcome. I will provide more detailed information if needed. I would like to find a vacuum gauge and get a more accurate reading on the suction side, and I will update if I can make this happen.
This isn't really an urgent issue, I'm thinking more long term so no rush. I want to carefully consider the options and find the best solution.