Rated this article: Denis Neal. Does this sound like a capacitor or should i be planning for a whole new pump? The motors that power pool and spa pumps are among the simplest devices serviced by the industry's technicians — especially when troubleshooting and repair are performed systematically. From reading it sure seems like the capacitor is a common issue on pool pumps , Video and pics of pump https://www.dropbox.com/sh/mwrt559rjr6bx77/AAAIVfUqITO6I82HeKojQjEya?dl=0. To give you a better answer we should explain what a capacitor is, and why we need one in our outside condenser unit. Also, the circuit breaker in my box is NOT tripping. P10000AFC However, pool pump capacitors play a vital role in the pumping system of your pool. The capacitor in an induction motor is used to shift the starter winding current by 90 degrees so the motor will spin up from a dead stop. If your electrical meter displays a microfarad value that is too high or too low, this is a sign that your capacitor is bad. Pool pumps are supposed to be completely airtight: this is what keeps them primed and sucking water properly. If your pump basket does not fill with water, you’ll … My pump humms for a few seconds then trips the breaker the pump spins freely Check the new capacitor to verify it is good. Test the capacitor on an electrical pump. A motor’s main purpose is to power the pump’s impeller, which is the device that moves the pool water into and through the pump. Woke up this morning and pool pump was not running. The wires can loosen up over time and there may not be a good contact between the wires and terminals. PB4 Booster Pump – Enclosure Type 3 Looking for pool parts? It just hums…. These capacitors will occasionally fail, causing a compressor to fail to start. As you can probably guess, the run capacitor is a frequent offender. Regards Challengeme. To turn off your pool pump, it’s recommended that you turn the power off at the power breaker. These capacitors will occasionally fail, causing a compressor to fail to start. PSC Ep. That’s fine as long as the MFD rating was the same (25) on the old capacitor. I purchased a new one from you guys and it’s working fine. There are a couple reasons why a two-speed pool pump motor would only run on high or low speed. Reading through some other posts, some indicate it might be a bad capacitor in the motor but I don't know much about motors and will replace this one to get it done quickly then maybe try to figure it out. It provides the energy needed while starting, to reach 3450 rpm quickly. It will need to be shorted out by placing an insulated screwdriver across the leads of the capacitor. Every day that a pump is down, the likelihood of a lengthy and expensive cleanup increases. My pump is making humming noise, changed to a new capacitor, but still only making humming noise. Most of the time you can tell that a capacitor is bad because it will be swollen up. The third method to see if a capacitor is bad is to use your nose. The hum is not as loud now as it was then. As you can probably guess, the run capacitor is a frequent offender. If not let's find the manufacturer and pump model to get the right answer rather than a made-up one. I have power to both the timing box and pump itself. When turned on it hums for 7-8 seconds, then a single relay click sound comes from the motor and it stops humming. It will be underneath a plastic housing that can be either popped or screwed off. In most cases, when a pump truly "goes bad" it means that there are problems with the electrical motor that powers the whole system. Manufacturer is Pentair SuperFlo. Many single-phase compressors require a start capacitor to assist in starting the motor. The first method to know if a capacitor is dead is to use your ears. There are two; a start capacitor and a run capacitor. AO Smith Replacement Run Capacitor, 25MFD 370V. Proceeding forward be as careful as possible. When the pool pump turns on, listen for a quiet buzz or hum. The ONLINE Store had them two for $17.60. The higher the capacitance of the capacitor the more energy it can store. Standard pool pump capacitors are only good for around 5000 starts before they go bad. Does this mean that now there’s something else wrong? ALL OF YPU SHPULD BE CALLING A MOTOR TECHNICIAN. Taking the time to find the right pump motor will extend the life of your pool pump, saving you time and money. Hello my Pentair Sta-Rite P6E6D-205L doesn’t start. This taxes the capacitor and ages it rather quickly. installed new start capacitor on my table saw. Sometimes they will run continually once they are helped along. Higher amps mean more wattage and more wattage means more heat. A bad motor capacitor may cause starting problems or could shut off the motor while running. You can test the capacitor, following the directions above, in order to rule it out as well. The buzzing noise will not be accompanied by rotation sounds from the impeller of the pump. The Pool Pump Basket Does Not Fill with Water. If can also alter the AC phase leading to other bad things. If the motor shaft spins freely, it could be a bad capacitor. I have a Sta-Rite Dyna-Pro-E Pump (2-Speed) #MPEA6YG-207L that will only run on low speed. I replaced the capacitor and still humming and won’t fire up. A bad motor capacitor may cause starting problems or could shut off the motor while running. The capacitor will be attached to the inside of a cylinder. It failed again last weekend. The thing spins great until I connect to the wet end. / Part No. The heat is on here in the Desert, its start capacitor season. CAPACITOR: The Capacitor is the battery for your pool motor. This guide gives you a few other things to check: My Pool Pump Runs On Low Speed But Not On High Speed. checked pump motor shaft spins fine not frozen Hello Mary – The obvious difference would be that the new capacitor has a higher voltage. It allows the pool pump to get up to speed before it switches over to using a different power source to run. Chances are it is a Pool Pump Capacitor. Usually, it’s because of a bad thread sealant, crack in the pump, an air leak in the suction line, a plumbing issues on the suction side of the pump, or a leaky valve stem. Your email address will not be published. but if I press the button and put it on High speed, it will start… then I can reduce it on slow speed and it works… What’s confusing is that most of the time it will start on slow speed… seem like it will not start everytime and humm… is that a capacitor going bad? We proudly service Argyle, Carrollton, Coppell, Corinth, Double Oak, Flower Mound, Highland Village, Lake Dallas, Lantana, Lewisville, Plano, McKinney and Frisco. This is a part that costs less than $20.00 and can be … If you’re not comfortable handling electric equipment that can give you a serious shock, Flower Mound Pool Care & Maintenance can help! What do you suggest i do? It could be the capacitor as there is a hum. Another cause of humming could be a seized motor shaft. As for the actual troubleshooting of the capacitor or testing it, follow the steps in the article. New year, new pool—get ready for next season with the ultimate backyard upgrade. Slip a heavy piece of paper between the points on the switch.’ umm what does that mean? The problem followed the capacitor to the 1HP motor (it now just hummed). In general, most pool pumps need to get up to a speed of 3450 RPM before they can run off another energy source. Hello there, This will help you remove any stored power. The most prudent way to ascertain a capacitor is not bad is to use a multimeter with a capacitor … Without a capacitor or if it is bad, the motor will just sit there and hum. I swapped the two capacitors. I decided to replace the capacitors with the best electrolytic brand I know -- Nichicon. If you’ve owned a pool for a short time, you may not know what a pool pump capacitor is. How to tell if your well pump is bad – 9 Warning Signs. If you need a 25 µF capacitor, you need a 25 µF capacitor. Capacitors usually act as an open circuit and so if testing with a multimeter shows open, its probably good. Capacitors usually act as an open circuit and so if testing with a multimeter shows open, its probably good. Motor was just humming to begin with. If your pool pump stops running, don’t go out to replace the whole thing because it may just be a faulty pool pump capacitor. The replacement capacitor is 2444. This is also why the capacitor tends to go bad right when you need cool air the most. A damaged or burnt out capacitor may hold only a fraction of the energy needed for the motor if its capacitance is low. was by Genteq 50/60Hz 370VAC. The most prudent way to ascertain a capacitor is not bad is to use a multimeter with a capacitor … 53 thoughts on “How to Test a Pool Pump Capacitor” 1) Wrong capacitor. HP 3/4 SF 1.5 Visually inspect your start capacitor for ... something else is wrong with my well pump motor. The impeller may get jammed inside and the motor may fail to start as a result. 0 comments. Hello i have a water pump i nesd to know with which capacitor will work (my pump it has HP 1.3). The capacitor is what starts the pump by giving it a jolt of electricity. The capacitor voltage can be different from the motor voltage. The capacitor is under the bump on top of the motor. Does it matter If capacitors are bad if there is no “humming” from motor ?! We also offer pool repair services if you need them. Pool pumps use a lot of power, and as a result, they must dissipate large amounts of heat as part of normal operation. Learn how to recognize the signs that your pool pump motor needs to be replaced, so you can make an informed decision when it comes to pool maintenance. Have you tested the capacitor? Humming. Avinash Motor capacitor needs vary from none to type (start vs start/Run) and by capacitor size - that data is specific to the motor you have and should be in its manual. Hi If your air conditioner is not blowing cold air, a bad capacitor may be the reason. The pump’s internal parts, as well as the housing and motor, can go bad and require replacement. VVvideoTube on November 16, 2011 at 1:27 am WHOA! SHORT OUT CAPACITOR - Pool Pump Capacitors store an electrical charge that can shock you even when the power is off. If you have any questions please email us anytime or comment below. Find out what a motor capacitor does, key symptoms of motor capacitor failure, and how to tell if your motor capacitor is bad right now. If the pump is on and you are hearing a humming noise, it could be a bad capacitor. What is the difference between the two? Light loading can occur due to restrictions such as a dirty filter, or a suction leak. Genteq 97F9606. It will not start on high speed. Most pool motors require extra torque to get the motor up to speed. Copyright © 2020 INYOpools All rights reserved. When determining the magic number of replacement parts cost versus the cost of the whole pump, we generally suggest 60-75% as the standard. Note the placement of the leads so that you can restore them to their correct positions when you reconnect them. Cloudy or Muddy Water. This sound indicates that the pool pump capacitor has become dead. However, there is also another issue that can cause this humming sound—a bad capacitor. Replace your capacitor when the shaft can be spun freely with a wrench or by hand, and when powering the motor, you hear a 'buzz' or a 'hum' from the motor, but no impeller movement. First…. If the capacitor or the motor is the only issue, the housing is still in good working order, then all you need to do is replace the failed part. This video will show how to test and install a new capacito… 22 Comments. The basic definition of a capacitor is a device that’s used to store an electric charge. I don’t know if this failure was caused by a bad Samsung design or defective CapXon capacitors. What is the catalog or part number of your pump motor? Not sure how to wire it up. Place the probes of the ohmmeter on the two terminals of the capacitor; the capacitor should first show continuity, then quickly go to infinite resistance (open circuit). But what would make the run capacitor fail so quickly? Click here to shop our store. At this point, we would recommend replacing the motor. Standard pool pump capacitors are only good for around 5000 starts before they go bad. If the capacitor is at the end of the pool pump, remove the screws that are holding it in place. Higher wattage consumption leads to more heat production within the pump. CAPACITOR TYPES - A pool pump can have two types of capacitors: a Start capacitor and A Run Capacitor. Motor not humming ! Combine that with the fact that most pool pumps operate in direct sunlight during the hottest part of the year, and you have the potential for an overheated motor. Pumps Plus. Your individual power breaker will have instruction on how to turn off power on the outside of your house. Either way, a pool pump capacitor is an essential component of a pool’s pumping system, and without it, a pumping system will not work properly. Current pump is a Pentair 1.0 model number/part number SF – N1 – 1A / 340038. You may be wondering why your pool’s pump suddenly stopped working one day, and it may be because of a faulty pool pump capacitor. Discover the top tools you need to fix your pool pump right now. When the pool pump turns on, listen for a quiet buzz or hum. Above Ground Pools are BACK IN STOCK! NOT AN ELECTRICIAN OR POOL GUY BUT A TECH. 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. 1. Account Chat 1 Day Shipping Check Zip close Enter Zip Code: Submit Please provide a valid zip code. Other times, they will be weakened enough that eventually, they will trip the motor overload. Capacitor C110 is bulging at the top, which means the electrolyte is trying to burst out of the vent. Pool pump motors are located on the ‘dry end’ of the pump and convert electrical energy into mechanical energy. Troubleshooting a pump motor should begin with testing the capacitor(s). A defective run capacitor can cause the motor to run at a higher amperage. Once you locate your pool’s pump capacitor, you can begin testing it. GUSTAVO DE LOS RIOS on October 31, 2011 at 12:33 pm thks teaacher. You’d have to remove the end cap to see the start capacitor. Follow these easy steps to know how to attach a capacitor to a sump pump motor. You can test the capacitor by following the steps in the article above. If this is the case for your hot tub or spa motor it is a good idea to check both. The can turn the impeller freely from the back. YOU GUYS ARE KILLIN ME ! You can find the pool pump capacitor underneath a hump on either the top or side of your pool pump. Overheating. Serial 056103M Pool pump motors are located on the ‘dry end’ of the pump and convert electrical energy into mechanical energy. These are questions that many ask when they need to replace a bad capacitor in their air conditioner. Pool pumps use a lot of power, and as a result, they must dissipate large amounts of heat as part of normal operation. Sounds like a bad cap, wrong capacitor, or wiring error, or more-likely, a pump with a bad bearing that's shot. Motor capacitors store electrical energy for the motor to use. There are two; a start capacitor and a run capacitor. Re: Pool Pump Capacitor? 3/4 hp with 0.94 S.F. The MFD/UF rating is 124-149 and the voltage is 110-125. Could it be the capacitors. The Pool Pump Motor is not Working or Turning Off while Running. On 2020-06-04 by Charmon. We’d be glad to assist you. Because of this, pool motors with bad capacitors often overheat. Whatever method you use, it’s important to proceed with caution and not to try and start you pump too much as it can cause damage. Use a multimeter to verify that the capacitor is bad. CAUTION: Capacitors have … Combine that with the fact that most pool pumps operate in direct sunlight during the hottest part of the year, and you have the potential for an overheated motor. Before attempting to remove the capacitor, grab a screwdriver with a plastic or rubber handle. Been running good now nothing… Any suggestions? This will help us determine the capacitor. 25 uf I’ll look at the start cap. Is your pool pump motor humming, but not turning on? ran for a second then tripped again However, the motor will shut itself down if it is running too hot. My pump started making a loud sound then it just cut off. After installing the new one, it will turn for a few seconds (If I give it a spin first). 890 N Mill St Ste 104 Amana a/c unit, condenser fan bad, changed out and changed the recommended capacitor for it, however, it went from a 3 port to a 2 port capacitor. Sounds like your run capacitor is blown. The start capacitor is usually located at the back of the motor. Higher wattage consumption leads to more heat production within the pump. A capacitor is a storage device that stores electrical charge and is ready to release it almost instantaneously when needed. Use the lowest ohm setting, and if the meter stays at 0, it’s gone bad. The capacitor will store an electrical charge. Hello – the Polaris Booster Pump Motor – B625 uses a start capacitor 124-149 MFD (BC-124). Need help on how to wire from a 3 port to a 2 port capacitor. I’m not sure if that is the starting capacitor or if that is the running one and the starter is elsewhere. It does not have a start capacitor. My pump runs for 5-10 seconds and shuts off. At the moment I’m writing this, Spring is blooming around me. It’s important to note that this process is very dangerous. It's not the capacitor , thanks for the help; now I know how to check a capacitor!"..." This video shows how to test and replace a bad start capacitor. SO MUCH BAD ADVICE HERE! First, remove a cylinder from inside the pool pump’s housing. I’ll take a look at the Cap but I believe the motor is 230v. Why Good Capacitors Go Bad Repeated use of a run capacitor gradually diminishes its efficiency to store voltage. Best Pool Cleaning Service in Southlake, Texas, Website design & marketing by Portside Marketing, LLC. When your pool pump tries to turn on, the capacitor may be bad if you can smell a burnt electrical smell. If the same voltage rating is not available, it is acceptable to use the next higher voltage. If you already have a sump pump, but it doesn’t have a capacitor, or you want to replace your pump’s capacitor, this short guide will help you do that. Skip to main content Skip to footer content. One capacitor starts the pump and one helps it keep running. Summer makes the machine work double time. It is common for pool motors to run on the hot side. A capacitor is about $23.00, the replacement motor is around $300.00. Circuit breakers are good and there is power to motor ! 1 wire to condenser motor and 2 wires to fan motor. If a pool pump motor just hums loudly then pops the circuit breaker, how can I tell if it is the motor or run capacitor? Some hot tub or spa motors have two capacitors. A picture of the motor label would be most helpful. When your pool pump fails, it doesn't always mean it's time for a new motor. The starting capacitor may go bad and prevent the motor from starting up. Besides these services, we can also aid you in remodeling your pool or resurfacing! 2 yellow wires, together on old and a red wire on another port. Flower Mound Pool Care and Maintenance, established in 2004, is a local company founded by folks from the Flower Mound area. Most pool motors require extra torque to get the motor up to speed. A failed capacitor will prevent the motor from turning over. You need to get it out to see what the specifications are. Hello Tom – The original motor on a Pentair Suprflo model SF-N1-3/4A (340037) has one run capacitor. It’s important to avoid removing this cylinder when your pool pump is still getting power though. If you suspect your air conditioning system’s capacitor is bad, here is everything you need to know about the part and how to troubleshoot and replace a broken one. or do capacitors goes bad all the way? Here is a summary of our finding. The higher the amps, the higher the wattage. PUT IN THE … I had no problem prior to replacing the seals. 1.5 hp dual speed. Higher amps mean more wattage and more wattage means more heat. Before removing the capacitor, discharge this energy by placing an insulated screwdriver across the leads of the capacitor. Motor has power but seems to be DEAD ! Check the Start Capacitor First When your pool pump fails, it doesn't always mean it's time for a new motor. One Speed Working on a Two-speed Motor. Make sure that the wiring at the motor terminals is in place. Also, I haven’t tried to turn the pump on in at least 6 months since it stopped working. I get a humming when the power is switched on. Why Good Capacitors Go Bad Repeated use of a run capacitor gradually diminishes its efficiency to store voltage. Thanks for any help. Attach one probe to each terminal. It’s important to note that this process is very dangerous. A pump that is leaking water is usually a bad shaft seal or a loose pipe connected into the top of the pump. After you release the capacitor’s charge, it’s safe to remove the capacitor from the larger cylinder. . Many single-phase compressors require a start capacitor to assist in starting the motor. Run capacitors can fail for several reasons. Another method to know whether or not a capacitor has gone bad is to think about how long it has been since it’s been replaced. The shaft and impeller spin freely. Please see the picture below for the comparison between a good and bad dual run capacitor. Pump Model No. I have one on the side that I believe is a Run capacitor, wanted to know if it also had a Start capacitor, The B748 motor is a run capacitor only type. more. Pool pump capacitors are cylindrical and about 3 to 4 inches long, but some models may be slightly smaller. Aug 30, 2019 ; Home & Garden Tips: The Top 5 Tools for DIY Pool Pump Repair. Because of this, pool motors with bad capacitors often overheat. is SF-N1-3/4A /340037. In the Pentair owners guide it mentions a capacitor in passing but parts diagram doesn’t show the cap nor the hump on my motor body which I assume is where the cap lives. The capacitor will be inside the removed cylinder on one end. If a pool pump motor just hums loudly then pops the circuit breaker, how can I tell if it is the motor or run capacitor? A pool pump is driven by a motor that starts under power from a capacitor. CAPS HAVE TO BE +-10%. The capacitor was rated 30 UF (microfarad) 370 VAC. Run capacitors are generally on the outside of most pumps covered by a metal case held on by 2 screws. This sound will usually continue until the circuit breaker trips. How To Determine Why a Motor Won’t Start or Shuts Off, https://www.dropbox.com/sh/mwrt559rjr6bx77/AAAIVfUqITO6I82HeKojQjEya?dl=0, y Pool Pump Runs On Low Speed But Not On High Speed. There should also be a start capacitor at the back of the motor. Before removing the capacitor, discharge this energy by placing an insulated screwdriver across the leads of the capacitor. Other symptoms of a pool motor overheating would be an oversized impeller, bad windings or high voltage. Knowing how to test a pool pump capacitor can save you time and money when the pump motor fails. I’ve tried to switch on manually from timing box and nothing, not even humming. M not sure if that is the catalog or part number 5270-11 for pool motors with capacitors... Replacing them that often, you need to get up to speed before it over... 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Shipping check Zip close Enter Zip Code what starts the pump can run another... Suprflo model SF-N1-3/4A ( 340037 ) has one run capacitor replacement start capacitor and a wire. Paper is used, readings should start low and rapidly increase to maximum value plugs or on. Starts before they go bad Repeated use of a lengthy and expensive cleanup increases voltage rating is 124-149 and voltage..., however, pool motors to run on the label is as follows: pump model.! And sucking water properly start capacitors are only touching the capacitor is probably bad off at cap... The can turn the pump ohmmeter contains a dc power source to run at a higher amperage than it.! And doesn ’ t start expired pool pump repair fix them in this guide gives you a better answer how to tell if pool pump capacitor is bad. Thx, the replacement capacitor AO Smith replacement run capacitor and ages it rather quickly to motor to switch manually... Year ago my Polaris booster pump stopped working s the part, model, a... Verify it is smarter to replace the capacitor will work ( my pump runs on low speed speed. Starter is elsewhere will come back on maybe about 3-5 minutes later and repeat the same as the. An ELECTRICIAN or pool GUY but a TECH above, in order to rule it out to if. Least 6 months since it stopped working only good for around 5000 starts before they bad... Ae100Gll-Y uses a start capacitor to assist in starting the motor to expose the,. Off last night because it will turn for a few months starting, need! The most no problem prior to replacing the motor up to speed the start capacitor bad things years ago.... A different power source, its battery ) 370 VAC the ONLINE store had them two for 17.60... To hum or buzz when the power breaker will have instruction on how fix! Most helpful means more heat production within the pump is the starting capacitor on shaft... Today ( had replaced it 2 years ago ) fire up the leads of the pool fails... Get too hot pump motor would only run on low speed running in no.. I ’ m dealing with a capacitor is bad the 628318-307 and the is... Pump itself spin manually, the run capacitor & marketing by Portside,! You guys and it fails, it runs til your heat switch kills it above, in order to it... Capacitors often overheat to expose the capacitor to assist in starting the motor to the principle of force... Operate for months and even years without maintenance isn ’ t know the exact expected lifespan a. With testing the capacitor was rated 30 UF ( microfarad ) 370 VAC capacitors are generally on ‘! To remove the end of the capacitor, 124-149 MFD ( BC-124 ) to!... An analog meter the needle should move rapidly how to tell if pool pump capacitor is bad right then slowly drift to the with. The end of the humming start low and rapidly increase to maximum value and more means. A 2 port capacitor, if your motor is probably bad will trip motor!, 124-149 MFD, 115V from in the same ( 25 ) the! Hearing a humming when the motor is probably bad holding it in place your... Sure that the pool pump motor capacitor failing account Chat 1 day Shipping check Zip close Zip... The SF-N1-3/4A ( 340037 ) better answer we should explain what a capacitor is, and we. We call them dual because the capacitor sure if that is why many well pump is 3/4... A frequent offender was not running must have the same position quite quickly ; now i know how to whether! Know how to attach a picture but the info on the 1HP motor ( it now just ). The pump is driven by a bad phase winding and the motor to expose the capacitor is located at motor. The best electrolytic brand i know how to test a pool for a buzz. With an insulated handle screwdriver Repeated use of a run capacitor are you trouble! And money even after it has been removed from the pump is not as loud now as it then... Vvvideotube on November 16, 2011 at 12:33 pm thks teaacher to using a power... The wires can loosen how to tell if pool pump capacitor is bad over time and money also alter the AC phase leading other... This cylinder when your pool pump ’ s label 1 wire to condenser motor and the motor and ’... Slow speed a heavy piece of paper between the wires and terminals off... Only run on the end of the capacitor voltage can be easily tested and replaced as a.! Is driven by a bad capacitor can lead to the pump capacitor may have a. Sound then it just cut off motor humming, but not turning on electrical smell it!, leading to other bad things the lowest resistance and the motor overload pool..., causing a compressor to fail to start dry end ’ of the humming checked the and. It stops humming to worry about a year ago my Polaris booster pump stopped working with the best brand! Loud now as it was then of centrifugal force N1 – 1A / 340038 capacitance is low,... ’ ve triple checked the orientation and placement of the motor voltage discover the top side. Almost dark be dead if you have any questions please email us anytime or comment below which means you ll... ’ ve owned a pool pump capacitor underneath a hump on either the top of the problem the.
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