Question about Pentair Whisperflo 1 12 Hp Pool Pump Wf26 011773 ()

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No suction and pump turns on but makes a humming sound. it is only 4.5 years old.

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Ok the humming sound can be one of two things. The worse case scenario is the motor is frozen and therefore dead. On the flipside tho sometimes it can be as simple as something binding on the impeller so that it cant get its initial spin and thats why it makes the humming sound and would eventually throw (trip) the breaker. The way to test is to first *****************MAKE SURE THE POWER TO THE MOTOR IS OFF***************** AND THAN DEAD CENTER ON THE BACK OF THE MOTOR (basically oposite the basket ya know where the noise is) THERE WILL BE EITHER A CAP THAT LOOKS LIKE A NUT AND WITH A QUARTER TURN IT WILL COME OFF OR THERE WILL BE A INDENTED OR INVERTED CAP WHICH YOU WILL NEED A THIN FLATHEAD FOR AND YOU TAP IN A COUPLE SPOTS TO PRY IT OUT. EITHER WAY WHEN YOU GET THAT OFF YOU WILL SEE THE END OF THE SHAFT. ( Its made out of stainless and its flat on two sides so that a 1/2 inch wrench can fit on it). IF YOU THAN TURN THAT SHAFT AND IT SPINS FREELY YOU PROBALY HAVE A DEAD MOTOR. IF YOU SPIN IT AND IT FEELS A LITTLE GRINDYTHAN MAYBE SOMETHING IS STUCK IN THE IMPELLER. IF THATS THE CASE GO AHEAD AND MAKE A FEW ROTATIONS AND THAN TRY TURNING ON THE PUMP AGAIN TO SEE IF THAT HELPED TO GET IT TURN OVER. MAKE SURE NOTHING IS ATTACHED WHEN YOU TURN IT BACK ON.

Pentairs warranty is one year if you just bought a pump by itself and three years if you have three or more major pieces of Pentair or Sta-Rite equipment installed at the same time. Also the warranty is for the original owner only it is non-transferrable.

Some of the common causes for this condition is if the basket in the pump ever cracks than stuff can get pass and clogg or bind the impeller. Now dead center on the shaft and the motor is whats called the Ps-1000 mechanical seal and if that develops a leak that isnt noticed or caught for a while than eventually the water from the leak will make it back into the bearings and windings of the motor and cause it to die.

Posted on Dec 30, 2010

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