I have a brand new replacement  Pure-line 1.5 hp pool pump. I wired it for 230 v because I have 2 115 v breakers going to pool pump outlet from house. I plugged pump in after filling pump and filter with water. I am only getting a humming noise and it sounds like pump is binding. I followed all  instructions in manuel. I am confused as to why I am only getting humming sound and why pump is not turning. It is brand new.