Originally Posted by
ChuckD
What are you using for an indicator that you need to change your DE? Even in the beginning of the season when opening places the heaviest load on the DE, I change it maybe three times in the first week, then once the next week and that lasts for a month or so. I change it when bumping doesn't bring the psi down as much as it should, and it climbs back up within a couple hours. For my Hayward EC65A I charge it with 4 pounds or so and normal psi is around 12-15. With the factory recommendation of 7 lbs. the pressure runs around 20-25. Bumping happens when either of those numbers rises 5 lbs. or so.
I think you could go somewhat longer between recharges.