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Pool Pump Motor Capacitor
#8270412
05/19/21 06:43 PM
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Joined: Jan 2011
Posts: 27
roberd
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Light Foot
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Pool cleaner pump motor won't kick on so I assume I need to replace the capacitor. The original capacitor has the numbers of 25 uF +/-6, 370 volts and 50/60 Hz. I have a replacement capacitor for my main pool pump that has the exact same numbers however its farad numbers are 30uF +/-6. Physically the new capacitor will fit into the housing. Is the new capacitor close enough in farad to use in this application?
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Re: Pool Pump Motor Capacitor
[Re: roberd]
#8270414
05/19/21 06:46 PM
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Joined: Oct 2010
Posts: 2,869
topwater13
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I have replaced them where the numbers didn't match exactly without issue. Mainly because the local supply only had one offering.
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Re: Pool Pump Motor Capacitor
[Re: roberd]
#8270417
05/19/21 06:48 PM
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Joined: Jan 2011
Posts: 27
roberd
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That's what I was thinking as well, especially given the fact that they have the +/- range of 6 but it never hurts to ask.
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Re: Pool Pump Motor Capacitor
[Re: roberd]
#8270434
05/19/21 07:09 PM
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Joined: Aug 2009
Posts: 3,846
Texan Til I Die
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It just means the replacement capacitor has a little more storage capacity. As long as the output voltage is right, it should be fine.
Silver spurs and gold tequila keep me hanging on. Pretty girls and old cantinas give me shelter from the storm.
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Re: Pool Pump Motor Capacitor
[Re: roberd]
#8270454
05/19/21 07:26 PM
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Joined: Jan 2011
Posts: 21,373
Bullfrog
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Yep, you can always go up. Try to not ever have to go down on uf’s. And keep the voltage the same.
Also, verify you have power to the motor first, to verify it’s not a breaker issue. Then kill it. 240 hurts
Man if I knew what Oxner knows I could throw away what I know
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Re: Pool Pump Motor Capacitor
[Re: roberd]
#8270461
05/19/21 07:29 PM
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Joined: Jan 2011
Posts: 21,373
Bullfrog
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I have to ask why a pool cleaner pump is needed when you have a main pump/filter set up?
Man if I knew what Oxner knows I could throw away what I know
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Re: Pool Pump Motor Capacitor
[Re: roberd]
#8270466
05/19/21 07:32 PM
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Joined: Dec 2011
Posts: 5,831
Lazyjack
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Close enough to try it. If it starts and runs. Motor is probably good. Order correct cap.
MFD rating should the same for max efficiency and motor life. VAC rating must be same or above. Most new run caps are rated for 370 or 440.
If the 2nd amendment was written just to include guns for hunting, why is there not an amendment to protect fishing poles?
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Re: Pool Pump Motor Capacitor
[Re: roberd]
#8270471
05/19/21 07:39 PM
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Joined: Jan 2011
Posts: 21,373
Bullfrog
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Motor life is a good point. Changing it does affect things in the long run.
I’ve always been told never replace a motor without a new capacitor.
Man if I knew what Oxner knows I could throw away what I know
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Re: Pool Pump Motor Capacitor
[Re: roberd]
#8270479
05/19/21 07:43 PM
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Joined: Dec 2011
Posts: 5,831
Lazyjack
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That's what I was thinking as well, especially given the fact that they have the +/- range of 6 but it never hurts to ask. Picking fly specs out of pepper, the +/- is the variance of the cap specs. 25 mfd +/- 6 means that cap might be measure between 19 mfd and 31 mfd with a capacitance meter.
If the 2nd amendment was written just to include guns for hunting, why is there not an amendment to protect fishing poles?
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Re: Pool Pump Motor Capacitor
[Re: Bullfrog]
#8270493
05/19/21 08:00 PM
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Joined: Dec 2011
Posts: 5,831
Lazyjack
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Motor life is a good point. Changing it does affect things in the long run.
I’ve always been told never replace a motor without a new capacitor. Yup. In the grand scheme, moving up from a 25 mfd to a 30 probably will not make a difference. But you know I play it safe.
If the 2nd amendment was written just to include guns for hunting, why is there not an amendment to protect fishing poles?
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Re: Pool Pump Motor Capacitor
[Re: Bullfrog]
#8270550
05/19/21 08:59 PM
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Joined: Jan 2011
Posts: 27
roberd
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Good question. We lucked out and the pool was already installed when we purchased the house. This is our first pool but it seems that the setup works well having the dedicated pump just for the cleaner.
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Re: Pool Pump Motor Capacitor
[Re: roberd]
#8271207
05/20/21 02:34 PM
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Joined: Aug 2009
Posts: 3,846
Texan Til I Die
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I just remembered something that I haven't thought about in years. 40 something years ago when I was in college, we had an electronics lab that had all kinds of random components sitting around. We would find a capacitor about the size of a salt shaker, charge it up and play catch with it. It usually didn't take more than 5 or 6 tosses until someone would catch it wrong and get popped. Good times!
Silver spurs and gold tequila keep me hanging on. Pretty girls and old cantinas give me shelter from the storm.
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