Have a Sta rite pump with AO Smith 2hp motor#77-177897-22. Extremely loud hard start, Changed 30 MF capacitor...no change!! It will try and start 2 to 3 times tripping thermal overload and then on t

SOURCE: High speed spa pump shuts off

The motor may have a thermal cutoff if the motor draws too much current. Do you have a sufficient large gauge circuit supplying the motore? If not the actual voltage at the motor may drop, causing it to draw more current to make up for the loss of voltage, thereby tripping the motor's protective breaker. I assume the motor will start again after serveral minutes of cooling down.

Curtis

SOURCE: how do i tear down impellar housing on ao smith

take the impeller housing cover off. the shaft is threaded onto the impeller. Host the shaft and unthread the impeller.David

John Prohaska

• 1378 Answers
• Posted on Jul 12, 2009

SOURCE: I HAVE AO SMITH MOTOR BL6414 HOW DO I WIRER IT UP

The BL6414 motor is shaded pole and does not require a capacitor.

John Prohaska

• 1378 Answers
• Posted on Jul 13, 2009

SOURCE: PUMP TRIPS BREAKER, BUT SHAFT ROTATES FREELY

Probably not. Take the capacitor off and inspect it for physical damage and if it looks ok take it to an electric motor shop for testing. Assuming it is ok your motor will probably need work or replacement.

John Prohaska

• 1378 Answers
• Posted on Jan 18, 2010

SOURCE: I have a AO Smith Century Centurin Swimming Pool

A.O.Smith USQ1152.