Yesterday I cleaned the DE grids (backwashed) for the first time at new pool and the flow meter shot to over 220gpm. Before I cleaned the grids the flow meter was at zero (probably why the other pool service was let go).
The rated flow for the pool is 100gpm. The equipment is a 2 hp pump feeding 2-1/2" pipe. There are two 90's between the pump and the flow meter and the flow meter has a minimum of 3 feet of straight pipe from the last 90. I checked the meter and it is made for 2-1/2" pipe.
Is 220gpm really possible from a 2 hp motor and 2-1/2" pipe?
Thanks for any help you might be able to give.