Jandy filter DEV48 that has just been cleaned

pakenter1953

New member
Apr 23, 2025
1
flower mound texas
Finished cleaning the grids and put them back in the filter and closed it up. Fired up the pump and pressurized the filter. Everything runs great for about 15-30 minutes. Pressure is 20-25 and water is running great through the spa and pool jets. Then after the 15-30 minutes the pressure goes up to 35 psi and starts slowing down the water flow through the spa and pool. I don’t understand why. I run a backwash and the everything runs fine again for 15 minutes. What is causing this ir what am I doing wrong ?