Was looking for an inexpensive dummy cell I could modify for winterizing my Pentair IC40. There's not enough space after the IC40 to attach a saddle for a permanent injection point (run into valves for spa and water feature), so thought I could modify a dummy cell to include an injection port for chlorine. Once the pool temperature falls below 52F, the SWG shuts off, and I'll swap in my modified dummy cell.
Tried a cheap knock-off from Impressa, "Dummy Bypass Cell Intended for Pentair IntelliChlor IC Models 520588". But the thread OD on Impressa is 3.051" compared to Pentair 3.122". The fittings included on the Impressa won't thread onto the Pentair, and the unit is also 0.05" shorter, so very unlikely it will fit properly. Concerned about a leak, but more importantly, damage to the fittings.
As others have found, the IC40 connections are smaller than 3" pipe but bigger than 2.5", so you can't make your own dummy cell with normal PVC fittings. The dummy cell walls are too thin to just drill and tap the injection port. Next challenge is finding a saddle that will fit on the Pentair 520588 dummy cell.
My purpose in posting is just to help someone else trying this, but also if they have discovered this is a bad idea, I'd like to hear that, too.
Tried a cheap knock-off from Impressa, "Dummy Bypass Cell Intended for Pentair IntelliChlor IC Models 520588". But the thread OD on Impressa is 3.051" compared to Pentair 3.122". The fittings included on the Impressa won't thread onto the Pentair, and the unit is also 0.05" shorter, so very unlikely it will fit properly. Concerned about a leak, but more importantly, damage to the fittings.
As others have found, the IC40 connections are smaller than 3" pipe but bigger than 2.5", so you can't make your own dummy cell with normal PVC fittings. The dummy cell walls are too thin to just drill and tap the injection port. Next challenge is finding a saddle that will fit on the Pentair 520588 dummy cell.
My purpose in posting is just to help someone else trying this, but also if they have discovered this is a bad idea, I'd like to hear that, too.
