C ENTURY Ao Smith B2748 B748 Pool Pump Motor 2 HP 230 Volt 56Y Frame. Used on Pentair WisperFlo and Challenger Pumps. Century Centurion replacement motor for Pentair WhisperFlo and Challenger full rated pumps. Specifications: HP = 2, RPM = 3450, Voltage = 230, Amps = 11.5, Service Factor = 1.30, Frame = 56Y, Total Hp 2.6, Shaft = Threaded. Note: This is the correct replacement motor for the Challenger 2 HP full-rated pump.
Shaft seal failure is the major cause of motor failure. This allows moisture to go back to the motor causing corrosion to the bearings and much more. One of the causes of a shaft seal going bad is the result of the pump running dry which heats up all the parts inside the pump causing damage. It's always important to replace the shaft seal when installing a new motor.
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