
I had to replace the cell but whoever first installed it had the union joints flush against the pad so it is impossible to tighten or loosen by hand. Also, the fittings leak unless you over torque them with channel locks. The installer must have had the same issue because he used thread compound. The new cell came with unions so I plan to redo this mess and replace five elbows with only two and mount the cell vertically above a check valve in line above the pump outlet. Then loop back with two elbows to the return. I'll have to dig out to add a coupling at ground level.
This is coming from the Dejoyaux filter which has a two speed pump and a bypass loop.
My other question is, what's the point of this Heyward pump since the system included the two speed? The problem is when the main pump is on high speed, the Hayward has to be running as well or else the pressure blows out the strainer pot gasket.