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I have a 2 year old pentair whisperflo wfds-28 2hp part 7 177456-03 that works fine on low speed but only humms loudly when trying to go on high speed. Is there a capacitor or something that has gone bad? Thank you, JOE WARD

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  • Pentair Master
  • 8,673 Answers

Possible 2 speed relay

Posted on May 08, 2016


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: pentair whisperflo pool pump motor replacement

No there is a cover on the other side of the motor thet comes off and with a 9/16 wrench holding the shaft - spin the impeller off

Posted on Jun 28, 2009

  • 990 Answers

SOURCE: my pentair whisperflo is making a load squealing

When you have noise in the pump it is usually a rumbel or rattel. If you have a squealing it is probally in your motor and is more than likly a bad bearing. If you have any water leaking at your seal this is probally the problem and it will just get worse. Sorry to say you are very close to a new motor.

Posted on Dec 07, 2009

  • 43501 Answers

SOURCE: What are the specifications for

Take the cover off of the is the bump on the top of the motor...then look on the capacitor and find the numbers that end with mfd. that is the size or rating of the capacitor...also then look for the voltage of the need to match that also...there are so many different motors used, even for the same pump that it is hard to say for sure what you may need there with out looking at it.
You can do that and then you know you are getting the correct cap for your motor...
My guess is that you are looking for something in the range of a 20mfd 370volt cap. but please check it out for sure they vary alot!!


Posted on Aug 28, 2010

  • 25 Answers

SOURCE: How do you replace an impeller on a 1.0 hp Pentair

Remove the bolts that hold the 'wet end' of the pump to the 'dry end'. If the impeller is held on with a screw, it is a 'left-hand' tighten which means it turns the opposite way of normal screws. Be careful not to damage the impeller. Any scoring on it will effect its performance and it will only be worth doing if everything goes back together cleanly and properly. Replace and lube all O-rings with silicone lube. Make sure all bolts are tightened and do them in an alternating fashion to ensure that you get a good seal.

Posted on Dec 03, 2010

  • 46 Answers

SOURCE: My Pentair Whisperflo pump is

Inside the pump is a set of bearings that help the components of the motor run smoothly. When they become clogged with dirt and debris or wear down, your pool pump may get very noisy or stop working altogether. This high pitched squealing you are hearing is fairly consistent with bearing failure.
t might be best to have the motor seperated from the pump housing and take it to your local pool outlet or motor shop. Installation of the bearings will be a breeze for them and make sure that no damage is done to the shaft of while the new bearings are being installed. At this time, they can also inspect the motor and make sure that there are no other problems with the pool motor.
Also, you should ALWAYS, ALWAYS, ALWAYS replace the shaft seal whenever you take the pool pump motor apart. This will ensure a positive seal for the motor and minimize the opportunity for leaks to occur.

Replacing the bearings in your pool motor:

1. Turn off power to your pool pump by unplugging it from the power source or by turning off the circuit breaker. 2 Remove the plumbing from the pump. Take off the unions on the suction and discharge side using a wrench. Loosen the pool pump from the fitting holding it to the ground and move it to a comfortable area to work in. 3 Remove the housing from the pool pump and separate it from the motor. Look at the owner's manual for your pump to see the specifics on how to remove the pool pump housing, since each model is different. Usually you will need to loosen a bolt with a socket wrench and loosen the metal band that holds it in place. 4 Remove the four bolts that hold the pump together. These are located on the hand bell of the frame. Remove the motor end bells. 5 Pull out the motor armature to expose the ball bearings. Insert your ball bearing puller to pull out the old ball bearings. Inspect them for damage. Replace the old ball bearings with new ones after greasing them with bearing grease, and reassemble the pump.
To be honest with you, I don't even let our technicians replace the bearings in the field anymore. It is a little difficult and really, how many people have a "ball bearing puller" laying around their house.

*Please note, this should ONLY be attempted if you are comfortable with the instructions and taking apart the pump, have the necessary parts and tools to make the repair, and are familiar with ensuring that everything is back together properly!
Please take a moment to let me know if this answered your problem or not! All of us here a Fix Ya do our best to help each person with their questions, and we know that we may not always be "perfect", but we do try!
The Ugly Pool Guy

Posted on Dec 15, 2010

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