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Where To Buy Pool Pump Capacitor

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Visit Our Cardiff Showroom For Everything Hot Tubs Swimming Pools And Swim Spas

Motor or Compressor Wont Run? Capacitor Test, Troubleshooting

Our showroom here in Cardiff is simply packed with industry leading brands so if you’re looking to buy hot tubs, swim spas or maybe a swimming pool and jacuzzi, All Swim is a great place to start! Hot tubs are becoming an ever more popular addition to UK homes and making the right choice for you and your family has never been more important. All Swim offers the very best advice on buying hot tubs and our range of Caldera Spas and Fantasy Spas won’t disappoint. Made by Watkins Wellness, the world’s leading supplier of hot tubs with over a million sales to date, you can rest assured you’re buying the very best quality hot tub for you and your family. We also offer a range of flexible hot tub finance packages to help you spread the cost of buying your chosen hot tub!

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Checking Your Pump Capacitor For Life

If your pumps capacitor doesnt smell burnt and looks absolutely normal, then you can use a multimeter to check if it still works. You can check out how to access your pool pumps capacitor here in our guide on how to change your pool pumps mechanical seals. Before attempting to remove or test your capacitor, be sure to discharge it by touching the terminals/leads with the metal head of a screwdriver. Dont worry if it sparks, thats actually a good sign, that means that your capacitor still holds a charge. Once your capacitor is off, take your multimeter and set it at the lowest ohm setting and touch the leads to the prongs of the capacitor. If the meter doesnt move or stays at zero, then you have a bad capacitor on your hands.

Why Do My Pump Capacitors Keep Failing

Weve recently had a surge of customers asking for replacement capacitors for their pool pumps. We figured that well put up a post outlining the ins and outs of your pool capacitor so you can have a better idea of what they are, why theyre failing, and how to determine if its just a capacitor problem or if its time for you to get a new pump .

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Testing A Pool Pumps Capacitor

If your pool pump is not starting, but instead gives a hum or a nnngh! type of sound, you may have a capacitor problem. This sound will usually continue until the circuit breaker trips.

The capacitor is kind of like a battery to start the pump motor, but what it really does is put the power out of phase on the stator thus shading the motor windings, causing the motor to begin to turn.

The first thing to check, especially during a spring opening, is that the impeller and motor shaft is turning freely. This will rule out the possibility of rust binding up the rotor and stator, or something heavy stuck in the impeller.

You can check for shaft rotation by removing the rear cover plate, and turning the end of the shaft with a large flathead or straight pliers, or on most pumps, you can remove the basket and feel the impeller with your fingers .

You could just replace the capacitor, to see if thats the problem. Look on the side of the existing capacitor to read the microfarad size MFD or the UF numbers. Pool pumps may have two capacitors, one in the back and one on top . The smaller, black capacitors, located in the rear of a motor, are usually labeled with a range of numbers, i.e., 161-193 MFD, while the larger, silver capacitors, typically located on the hump of the motor, on top are sized by a UF number.

If you want to test the capacitor however, follow these instructions carefully, as there is a small element of danger, should the capacitor blow-up on you!

Check Your Capacitor For Life


Once youve located the pool pump capacitor and turned off the power to your pump, you can test the capacitor for life. Its important to note that this process is very dangerous. A pool pump capacitor can deliver a powerful shock, even after it has been removed from the pump. Proceeding forward be as careful as possible. First, remove a cylinder from inside the pool pumps housing. The capacitor will be inside the removed cylinder on one end. Some of these cylinders will have a clear cover where you can see the capacitor.

Next, remove the cover on the end of the cylinder, exposing the capacitor. Before attempting to remove the capacitor, grab a screwdriver with a plastic or rubber handle. Touch the screwdriver to the ends of the capacitor making sure to touch each prong simultaneously. There will be an electrical spark when you do this so make sure you are only touching the capacitor with the screwdriver. After you release the capacitors charge, its safe to remove the capacitor from the larger cylinder. Use a multimeter on each of the prongs to test the capacitor. Use the lowest ohm setting, and if the meter stays at 0, its gone bad.

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How To Tell If Your Capacitor Is Faulty

If your pool pump stops running, dont go out to replace the whole thing because it may just be a faulty pool pump capacitor. Checking you pumps capacitor can save you a lot of money, however, it is dangerous without the right information. A pool pump that wont run may be a symptom of many different problems, but there are a couple of ways to know if the pool pump capacitor is at fault.

The first method to know if a capacitor is dead is to use your ears. When the pool pump turns on, listen for a quiet buzz or hum. This sound indicates that the pool pump capacitor has become dead. Another method to know whether or not a capacitor has gone bad is to think about how long it has been since its been replaced. Standard pool pump capacitors are only good for around 5000 starts before they go bad. That may seem like a lot of starts, but the get used up quite quickly. If youve had your pool for a while, it could be possible the capacitor is bad. The third method to see if a capacitor is bad is to use your nose.

When your pool pump tries to turn on, the capacitor may be bad if you can smell a burnt electrical smell. An expired pool pump capacitor may also have a bulged outer shell. Whatever method you use, its important to proceed with caution and not to try and start you pump too much as it can cause damage.

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Powerwell 35 + 5 Mfd Uf 370 Vac Or 440 Volt Dual Run Round Capacitor Pw

$13.10Get Fast, Free Shipping with &Return this item for free

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    • by entering your model number.
    • 35/5 uf or MFD micro farad 440 Volt Dual Run Round AC Capacitor . Replaces BOTH 370 & 440 VAC capacitors
    • Can size measures 2″ diameter x 4.75″ tall.
    • Built to the toughest USA standards for AC motor run capacitors including EIA-456-A and IEC 60252-1:2001
    • Operating temperature range -40 C. to +70 C/ -40F to 158F
    • Replacement for 97F9834 , Z97F9834 , HC98JA036 , P291-3553R , HC98CA036 , HV98CA035 , 97F9834, R100335-05, 89M73, HC98JA036D , TT-CAP-35/5/440R, RC0102 , TRCFD355 , 12283 , Z97F9848 , Z97F9899 , 97F9899 , cap050350440rs , 12266 , TP-CAP-35/5/440R
    Specifications for this item

    Flower Mound Pool Care & Maintenance Can Help You Replace Your Pool Pump Capacitor

    How to Diagnose Problems with Well Water Systems | Ask This Old House

    Changing a pool pump capacitor can be difficult and dangerous. If youre not comfortable handling electric equipment that can give you a serious shock, Flower Mound Pool Care & Maintenance can help! We have years of experience in pool care and maintenance, and we would love to help you change your pool pump capacitor.

    Improperly changing a capacitor can lead to damage to your pools pump so we urge you to be cautious. Alongside being able to change your pool pump capacitor, we also offer other pool maintenance services! We offer a weekly pool service, which means youll never have to worry about a bad capacitor. We also offer pool repair services if you need them. Besides these services, we can also aid you in remodeling your pool or resurfacing!

    We can replace your pool pump capacitor or assist you in any other pool related needs! Give Flower Mound Pool Care & Maintenance a call at 995-3556!

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    What Does A Pool Pump Capacitor Do

    A pool pump capacitor is similar to the battery in a car. The same reason your car needs a battery inside the engine bay to start is the same reason a pool needs a capacitor to start. It allows the pool pump to get up to speed before it switches over to using a different power source to run. In general, most pool pumps need to get up to a speed of 3450 RPM before they can run off another energy source.

    Pool pump capacitors are cylindrical and about 3 to 4 inches long, but some models may be slightly smaller. Some pool pump systems require two capacitors. One capacitor starts the pump and one helps it keep running. Either way, a pool pump capacitor is an essential component of a pools pumping system, and without it, a pumping system will not work properly.

    Where To Buy A Capacitor

    • TTurtleboy on Nov 14, 2008First, I am not a home-technical person at all, so if I use the wrong terms, or describe something incorrectly, I apologize in advance.I live on the 15th Floor of a large condo in Fort Lauderdale. I don’t know how my A/C system works, but I know it’s connected to the rest of the building. Here is a picture: A/C runs for about 5 minutes, then I hear it “chug- chug chug…..” and then cut off. If I turn off the power wait a few mintues and turn it on again, it will do the same thing.I’ve poured a bleach water solution down “the pipe” thingy, and have also tried to run a snake down it. No change.Any tips?

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    Energy Saving Pool Pumps

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    Pool pumps that earn the ENERGY STAR mark are independently certified to use up to 70% less energy than standard pool pumps, meaning you can save energy, save money and save the environment.


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    *Based on a VS PlusHP 2.7HP pump on a 28,000 gallon pool with 2 turnovers per day at an average power cost of 0.185/kWh; when tested in accordance with the applicable requirements of 10 CFR 429.

    Powerwell 55 + 5 Mfd Uf Micro Farad 370 Or 440 Volt Dual Run Round Capacitor Pw

    $12.10Get Fast, Free Shipping with &Return this item for free

    • Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
  • Go to your orders and start the return
  • Select the return method
    • Make sure this fitsby entering your model number.
    • 55/5 uf or 55/5 MFD 440 Volt AC Capacitor. Replaces BOTH 370 & 440 VAC capacitors
    • Can size measures 2-1/2″ diameter x 4-1/3″ tall. Operating temperature range -40 C. to +70 C/ -40F to 158F
    • Built to the TOUGHEST USA standards for AC motor run capacitors including EIA-456-A and IEC 60252-1:2001
    • GUARANTEED TO LAST 5 YEARS. We are extremely passionate about our products and are fanatical about quality control in our workshops. ORDER NOW with peace of mind. No Catches
    • Replacement for P291-5554RS , P291-5553R , TT-CAP-55/5/440 , cap050550440rtp , cap050550440rt , TRCFD555 , 97Z9839BZ3 , Z97F9839 , 97F9839BX , CPT00670 , P2915554RS , TP-CAP-55/5/440R , HCKS550D050R440Z
    Specifications for this item

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    How Do I Find The Capacitor For My Pool Pump

    A pool pump capacitor is easy to find if you know what to look for. Although models of pool pumps vary, its easy to find the pool pump capacitor because of their housing. You can find the pool pump capacitor underneath a hump on either the top or side of your pool pump. It will be underneath a plastic housing that can be either popped or screwed off. The capacitor will be attached to the inside of a cylinder.

    Its important to avoid removing this cylinder when your pool pump is still getting power though. To turn off your pool pump, its recommended that you turn the power off at the power breaker. Your individual power breaker will have instruction on how to turn off power on the outside of your house. Once you locate your pools pump capacitor, you can begin testing it.

    What Is The Difference Between An Above Ground And Inground Pump

    An above ground pump is typically 110/120 volt with a standard wall plug. Typically, inground pumps are 220 volts with the ability to switch to 110 volt, and most inground pumps need to be hardwired for installation. An inground pump does not require gravity fed water like an above ground pump, which relies on gravity pushing water down in to the pump basket for priming. For this reason, an inground pump is sometimes referred to as a self-priming pump.

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    Pool Pump Motor Failed Check The Start Capacitor First

    Tech Tip: Troubleshooting a Ground Fault

    When your pool pump fails, it doesn’t always mean it’s time for a new motor. ;Often times, if your motor is less than 5-7 years old and it fails, the real problem may be the start capacitor. ;This is a part that costs less than $20.00 and can be easily tested and replaced as a DIY activity. ;A $20.00 part is much easier on the wallet than a new motor that can cost anywhere from $130.00 to $300.00 plus.

    The typical warranty on a;pool pump motor;is 1 year from the purchase date. ;So, if your motor fails shortly after this, do not immediately go out and replace the motor without first checking the start capacitor. ;Below is a good video I found on YouTube which explains how to test your pool pump motor start capacitor. ;I hope you find this useful.

    Want some more pool pump motor help? ;How about reading;“The Motor Doctor” straight from Century/A.O. Smith? ;


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