Relatively new pool owner, existing ~5 yr old plaster 10k gal pool. Think my salt cell(original install) is dying, but want a 2nd opinion/sanity check. Goldline controls, T-15 cell. Inside control panel and circuit board looks brand new. Fuses good, no discoloration/burns. Pulled and cleaned the cell with 5:1 31.5% muriatic, was pretty clean with very minimal scaling, not anything like some of the horror pictures I have seen on here.
I run the pump on high at least 4 hours before any tests.
Using Aquachek salt strips, I get 4850PPM salt. Using Taylor R-1766 chromate test, I get 4600-4800PPM. Control panel says low salt, varying between 2200-2500PPM, occasionally cell switches off because salt reads too low.
Cell: -28.5 Volts, -4.66 Amps this morning
+27.6 Volts, +4.92Amps this evening
PH - 7.8
FC - 1.5
CC - 0.0-0.5
TA - 75-80
CH - 290
CYA - 60
Borate - 40-50
Temp - 78Â°F
Yes, I know chlorine is a bit low, and CYA is also a bit low. Been slowly working up CYA. Was between 0 and 10 when I bought the house, and 9" of rain in the last week is not helping at all. After these tests, I did add a half bottle of plain old unscented Clorox.