I have (2) 1.5hp whisperflo pumps and one has a 50uf capacitor and the other is a 30uf. Does anyone know what which one is correct for my pump?
Which MFD/UF rating for capacitor for Whisperflo 1.5hp?
- Thread starter tanksjeep
- Start date
tanks,
What we really need are the P/Ns of the motors. The Wisperflo pump takes several different motors.
Thanks for posting,
Jim R.
What we really need are the P/Ns of the motors. The Wisperflo pump takes several different motors.
Thanks for posting,
Jim R.
Sorry...my bad. It's 1.5hp "combined"...3/4hp each.
Here's some screen shot of the labels....
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Normally I would but I have two identical pumps with different specs on the capacitor...that seemed strange to me.
Attachments
You just use the same capacitor that the pump comes with.
Has either capacitor been replaced?
The motor manufacturer selects the capacitor at the time of manufacturing based on the motor characteristics. Seems like they would be the same, though.
Probably need to contact Regal Beloit for a more exact answer.
Has either capacitor been replaced?
The motor manufacturer selects the capacitor at the time of manufacturing based on the motor characteristics. Seems like they would be the same, though.
Probably need to contact Regal Beloit for a more exact answer.
Ok, thanks. I just thought that maybe at some point the PO replaced the capacitor with the wrong one and that's why they were different ratings for the same pump. I wonder why they are different.
If one was replaced, someone might have used the wrong one.
You could check the power factor with each capacitor to see which capacitor gives you the best result.
Watts /(volts x amps) is the Power factor.
The power factor will be less than one with no capacitor.
The correct capacitor should make the power factor about equal to 1.0.
You could check the power factor with each capacitor to see which capacitor gives you the best result.
Watts /(volts x amps) is the Power factor.
The power factor will be less than one with no capacitor.
The correct capacitor should make the power factor about equal to 1.0.
If you can measure true power and apparent power, you can calculate the correct capacitor size.
Practical Power Factor Correction : Power Factor - Electronics Textbook
Edit- The pump might not work without the capacitor. Just try each to see which gives the best result.
Or, contacting Regal Beloit might provide the answer.
Practical Power Factor Correction : Power Factor - Electronics Textbook
Edit- The pump might not work without the capacitor. Just try each to see which gives the best result.
Or, contacting Regal Beloit might provide the answer.
tanks,
Looking on the A.O. Smith site, I found a link between your motor P/N 177449 and run cap P/N 2448, 50 mfd, 370 volts.
Jim R.
Looking on the A.O. Smith site, I found a link between your motor P/N 177449 and run cap P/N 2448, 50 mfd, 370 volts.
Jim R.
Great job Jim!...thanks to you, I was able to find the same info on the century electric motor site in their 3996_Replacement_Parts.pdf.
Thanks everyone!
Thank you very much, everyone, for this thread;
I have been hunting around for ages to verify the cap for my whisperflo pump.... Not sure why this info should be so hard to come by (my user guide has a parts list which conveniently excludes the cap or its specification)... I was able to confirm that my 50MF cap was right for the motor I have.
I have been hunting around for ages to verify the cap for my whisperflo pump.... Not sure why this info should be so hard to come by (my user guide has a parts list which conveniently excludes the cap or its specification)... I was able to confirm that my 50MF cap was right for the motor I have.
