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I just switched off my pentair whisperflo pump to clean the basket out and when I turned it back on, it made a buzzing noise and will not draw water.

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  • 1,378 Answers

Thank you for posting your question here on Fixya.com.


It could be the pump is bound up but it is more likely the motor is failing. It may be a small part such as the capacitor or the starting switch, but could also be more severe such as the winding itself. You will also want to examine the shaft where it passes thru the pump and motor and look for signs of rust from a pump seal leak.

Start with the capacitor. Use a digital multi-meter (DMM), preferably with a capacitor setting, or an analog meter set for Ohms. With an analog, you should see the needle deflect as if testing a closed circuit then it will slowly drop to 0 if the capacitor is good. If it doesn't move or moves and stays to the side showing a closed circuit the capacitor is bad. If you notice a burn hole near the terminals on the end of the capacitor do not bother to test it. If you do not have access to a meter you can try grounding the posts together with a screwdriver to see if they arc although It is not a very reliable test method. Be sure you are holding on to an insulated handle for the tool you use to short the terminals together or you can get a good poke.

If you are not familiar with testing these parts your best bet would be a local electric motor repair shop to see if the motor can be repaired or if it would need to be replaced. They should also be able to ensure there is no pump damage. If you wish to continue to try to repair it yourself please comment with any questions you have as you work thru the pump and motor.


If this answer does not fix your problem, please comment with additional details or contact me thru our site at www.arrowpools.net prior to rating the answer; I'll do what I can to help. Positive feedback is appreciated once your problem is solved!


John

Posted on Mar 16, 2011

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1 Answer

Hello, I have a pentair whisperflo 1hp pump and it seem to have very little water pressure coming into the basket and my skimmer has very little suction as well. Any suggestions Thank you, Ali


turn the pump off, remove the lid and pump basket. reach your finger inside to see if there is any debris caught in the impeller. MAKE SURE the pump cannot come on at any point while you're working on it.
That should do the trick, if not, investigate an air leak on the suction side of the pump. Causes: bad lid 0-ring, threads on suction fitting leaking air in, or if there is a union on the suction side, make sure it's tight and the o-ring is in good condition (add lube as necessary).

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Pentair Whisper Flow 2hp pump appears to not **** as much water as before. Filter basket recently broke and allowed small leaves to get sucked up by the motor. Could this be the reason for the loss of...


Yes, If the debris you speak of got past the filter basket, it can clog the impeller. If the impeller is clogged, it wont pump water. Simply remove the 6 bolts on the pump end, then remove the diffuser with a 3/32 hex wrench, then clean the impeller. Its very easy, and very important that this get done every 6 months in an outdoor pool with trees surrounding it.

Also, the filter basket should last a long time, if this is breaking on you, make sure your water chemistry is in check. Agressive water can cause lots of damage and cost lots of money.

If you still have bad flow after this fix, replace the shaft seal.

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When I turn on my pool filter with a Pentair WhisperFlo 2 hp pump, the psi has jumped from 18 to 30. There's nothing visible in the baskets in the skimmers or in the WhisperFlo. Where could the resistance...


If your pressure has gone up, the problem will be on the discharge side of the pump. First, make sure that your gauge is not malfunctioning.
Next see if all valves after the pump are set properly and that the three way valves or backwash valve are not broken inside.

Is this helpful?
Gary

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My Pentair WF-26 1.5 HP just started emitting a loud "whine" detectable above the regular pump noise. Looking through the window into the debris basket the water also looks more frothy than...


The loud "whine" you hear, does it sound like its a metal kind of "whine"? There are a couple of things it could be. Your impellar may have debris caught in it and to properly check and clean the impellar you will need to open up the pump and remove the diffuser and check/clean as needed. You can sometimes remove the basket and try to feel your way with a couple of fingers to the impellar but your only able to reach 10% of it. Whisperflo is an outstanding pump but very notorious for debris getting stuck in the impellar and the impellar breaking easily because it is plastic. If you have ran the pump without prime/no circulation you can easily have caused heat damage to the impellar. The other thing to check is the motor. Although it is only 2 1/2 years old the motor still could be going out. The bearings are the top noise makers when a motor is going bad. You will still have normal suction/circulation it will just be really loud when the motor runs each day.

I hope this helped. Please don't hesitate to submit any further questions you may have. I would be glad to help.

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If its the "hum" that bothers you there can be debris in the impeller, take out the pump basket, reach down and feel the plastic blades beyond the hole at the bottom of the pump, should be smooth and clean. Hair often builds up at this point and causes noise. If this is a water flow problem I'm assuming its an in-ground pool. When you "prime" the pump make sure you are pulling off only the main drain.

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1 Answer

My Whisperflo was making a buzzing noise while pumping. I turned it off to clean the strainers and now when I turn it on it makes a loud buzzing noise and the motor does not spin. The impeller moves...


it's a bad start/run capacitor. It's under the hump on top of the motor. DO NOT touch the terminals with your bare hands in case the capacitor is charged. You can replace it with an exact match.

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check for air leaks, cover o-ring is common culprit. anything in front of pump can cause this.

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