my old motor died and had to have it replaced. the old motor was a hayward super pump 1 hp, sf 1.1, 3450 rpm (model number c48k2n143b1). they replaced it with a century 1 hp, 1 sf, 3450 rpm. we havea sand filter and a 35,000 pool(from what ive been told) seems like ever seince the motor was...