New install. Intelliflo pump shuts down when attempting to run legend II cleaner. The only way it won't shut down is if I either have the returns full open and the pump at approx. 80+ gpm (to get the cleaner to move) or the returns closed, relief valve at wall fitting full open and flow set at 15 gpm. If I try 20 gpm filter pressure hits 35-40# and pump shuts down. Cleaner line is 1.5". Pump works fine if I remove cleaner from the end of the hose. Can the intelliflo operate this cleaner only without having to slipstream water somewhere else? I was led to believe that it could. As it is I'm not seeing any efficiency when running the cleaner. The motor runs at 3000 rpm, 1800 watts at 83 gpm. In return mode running 23 gpm and 175 watts and 0-1 psi on filter, which is good! No issues on water feature mode either. Any ideas or comments would be greatly appreciated.