I expect that square thing (passes power through the start capacitor for a limited time) is shot. we have a single phase submersible motor, rated 5hp at 230v, and operates on capacitor start controller. By visiting If you wish to be updated when new comments are posted, add: www.about-air-compressors.com/feed/ to your RSS reader. The higher the capacitance of the capacitor the more energy it can store. All Rights Reserved BNP Media. ? Again, I would double check to ensure the switch is opening in a timely manner. Before reconnecting, the drive belt I disconnected the run capacitor, and briefly spun it up. R. rodg98133 Member. Find out everything you need to know about this exciting technology. By closing this message or continuing to use our site, you agree to the use of cookies. The symptoms are that it just hums when you try to start it. This website requires certain cookies to work and uses other cookies to Motor is wired as per the LHS diagram in the attached photo. i replaced the burnt capacitor with same microfarad rating, and it blew up again, replaced it with a higher reting microfarad capacitor, still the same thing happened. Start Capacitor keeps blowing ? what do I look for? We'd welcome it here! Your motor's run winding may be damaged. Visit our updated, This website requires certain cookies to work and uses other cookies to help you have the best experience. – October 2020, Sanborn Magna Force 3hp air compressor that no longer runs – October 2020, About Different Brands of Air Compressors, Want to bragg about your gorgeous computer rebuild? I used it for … Copyright ©2020. But now the capacitor keeps blowing. Anyone have any advice on this? Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to the ACHR News audience. this website, certain cookies have already been set, which you may delete and A bad motor capacitor may cause starting problems or could shut off the motor while running. take belt off motor starts but draws 42 amps at start. but to my knowledge nothing to my electrical box, everything in same place. I live in Orlando where we do have many storms, lightning, etc. Please add it here along with photos to help others help you with your compressor and equipment problem! Visit our updated, Fan Array Systems Guarantee Highest Energy Efficiency, Reliability and Fit. The bulk of the current flowing in and out of the capacitor is out of phase with the voltage and consequently energy is getting pumped in and out of the capacitor without actually getting dissipated (apart from lossage). motor will not start again , will hum but will not start under load, as did when cap went. The membrane on top of a defective capacitor will normally blow out when the capacitor fails. Replaced with same and blew immediately. By visiting this website, certain cookies have already been set, which you may delete and block. After 3yrs no problems , one of the capacitors blew, motor would not start. The unit is a "Tornado". I had a repair guy come out and he replaced this, the motor fan and the contactor. The capacitor is 105-126 MFD 220-250 volt (the standard for 1 HP). My AC keeps blowing the run motor capacitor. Ran great bfor two days, the n armature fried completely( says same shop) sold me replacement motor, Marathon 21.0amp 220v . The pressure switch turns on the pump at 45 psi and turn it off at 52 psi. Visit our privacy Jul 23, 2014 #6 Can you post a picture of the parts in question? Pump is recently new as is control switch/head bleed valve. Anyways after I install the new start capacitor , I noticed it started to run hot and spray oil out of the bottom. If you do not agree to the use of cookies, you should not navigate A start capacitor can also overheat from rapid cycling of a compressor. Joined May 16, 2013 Messages 9. The start capacitor is for getting a motor started, not keeping it running. All Sponsored Content is supplied by the advertising company. Happened at One Wilshire in Los Angeles once while I was there. New comment? Thanks. It’s a 5hp GE 1phase/220v compresses motor mounted on an 80gal vertical tank with single stage v-twin pump. While your air conditioner is running, the capacitor collects and stores energy, similar to a rechargeable battery. They may have spit your 220 from different phases. Pump is recently new as is control switch/head bleed valve.eval(ez_write_tag([[300,250],'about_air_compressors_com-medrectangle-3','ezslot_0',139,'0','0'])); After 3yrs no problems , one of the capacitors blew, motor would not start. start capacitor keeps blowing up? The start capacitor would normally be energized only a few seconds. A damaged or burnt out capacitor may hold only a fraction of the energy needed for the motor if its capacitance is low. Landlords electrician checked box said its fine but hinted may be some problem with the way landlord had service split recently, electrician mum about what was done. Bambi 75/250 won’t build air after being on its side – November 2020, Parts for a Campbell Hausfeld TF0018 – November 2020, IR T-30 cannot get under way? ____________________ A start capacitor can be damaged by a sticking relay, which will cause it to stay in the circuit longer than normal and overheat. Landlord has done some major construction and elecrical work on this building and next door facility too. Design, CMS, Hosting & Web Development :: ePublishing, This website requires certain cookies to work and uses other cookies to help you have the best experience. Thread starter snowluck2345; Start date May 24, 2013; S. snowluck2345 Registered. Start Capacitor keeps blowing ? Some devices care, others don’t, so other stuff working doesn’t mean it is right. J. JamesW. Possible electrical issue Anyways after I install the new start capacitor , I noticed it started to run hot and spray oil out of the bottom. with belt on, no start just hum and blow 20amp breaker. You might measure the resistance of the wires to the pump after isolating them. Fan Array Systems are becoming the leading choice for ventilation air handling units for their efficiency, and modular, lightweight design. After the capacitor jumpstarts those parts, your AC will begin blowing cold air throughout your home. TFP Expert. Often motors have two windings, a start winding and a run winding. data. Normally, a visual inspection of a capacitor will indicate if it is defective. ? More than 16 years on line helping folks with their air compressor problems! Hope that helps. Or your system may have a faulty control. had motor serviced at electric motor shop. ••• More options. The pump is in a 260' well at the 160' level and water is at 90'. Installed after checking bleed valve operation and pump operation. ". New question? hard to believe its another motor oriented issue with brand new motor from very reputable shop, could some elecrical mis hap or such issue be the contributing cause to this repeated motor failure? I finally got around to replacing it today, but guess what, it blew again. I am having an issue that started with the start capacitor apparently blowing on it. This is the switch opening the aux winding circuit with the start capacitor. Contact your local rep. A start capacitor will normally fail open, and this can be tested with an ohmmeter or a capacitor tester. After that it blew the capacitor and I called him back. When putting it back on the compressor, I noticed that the run capacitor had blown. ? by: doug s.d.ca. Mar 2, 2011 20,901. I … I got a reading of 9 mfd. By closing this message or continuing to use our site, you agree to the use of cookies. Motor ran just fine. by Kipp (Catskill , NY) It’s a 5hp GE 1phase/220v compresses motor mounted on an 80gal vertical tank with single stage v-twin pump. The actual dissipated power is just due to leakage and finite resistance. I get water but it will blow the capacitor anytime I need to do something that requires allot of water, like laundry. replaced capacitor and switch plate assbly. problem is the capacitor keeps blowing up. I just changed out the start capacitor on the compressor because the old one started to leak oil and the compressor stopped working. ? Startup capacitor keeps blowing. The system is older, not sure how old. pump turns over easily too. help you have the best experience while on the site. Registered. block. By visiting this website, certain cookies have already been set, which you may delete and block. I don't know if you would be better to replace the capacitor and square thing, or to just get a new control box. Jul 5, 2014 24 nottingham , UK. Motor is a twin capacitor type, 200MFD start cap, 30 MFD run capacitor. how do I check? It is of course electrically powered by 110-120 A/C. Motor capacitors store electrical energy for the motor to use. I just changed out the start capacitor on the compressor because the old one started to leak oil and the compressor stopped working. May 24, 2013 #1 I have a harbor-freight 8x12 metal lathe I bought used around 6 months ago and a month or two ago the startup capacitor blew. this website. Each time your air conditioner turns on, the capacitor provides a new blast of energy. Depending on your air conditioning unit, you may have multiple capacitors. I replaced the start capacitor with a similar one, used it once, and it has happened again. ••• More options. Ran fine for one week with part time use. Appreciate it. I don't work on wells. Or your fan motor may require a dual capacitor (start and run) or a separate run capacitor to keep it spinning. I have replaced it 3 times now in the last month. Compressor motor start capacitor is blowing. Interested in participating in our Sponsored Content section? I checked the capacitance with my Fluke meter and the capacitor went bad . Defective start capacitors can and will lead to problems with the operation of single-phase compressors. Thanks for the advice on this one, Doug. and cookie policy to learn more about the cookies we use and how we use your