Schedule 40 fittings connected to pool pumps will warp if the pump overheats. Owned a pool service company for twenty years and made a small fortune repairing warped schedule 40 fitting on pool pumps (including whisperflow) installed by pool builders. Use schedule 80 fittings. The wiring diagram for the pump is on the side of the pump motor. Make sure to reconnect the bondwire to the bonding tab on the back of the new pump motor.