Ask Question Asked 4 years, 9 months ago. This is why you should never keep turning on the AC circuit breaker after it trips, or ignore any of the problems described above. If so, apply gloved back pressure to the fitting or port … Campbell Hausfeld air compressors are used to run power tools such as spray guns, drills, sandblasters and die grinders. 1 phase -115 volts. Any help is appreciated. Electric motor starting & run capacitor troubleshooting FAQs Questions & Answers about Electric Motor Start-Boost or Run Capacitors Capacitors are electric devices that get an electric motor running at start-up or that help keep a motor running once it has started. I took the belt off the pump just to make sure the pump wasn’t holding it back. When I reset the breaker - the unit immediately comes back on again and runs until the thermostat registers desired temperature has been reached. If a panel breaker is tripping that quickly then there is a serious short in the power circuit. It blew a 13amp fuse before I changed the fuse to 20amp. the motor I’m guessing? Are you using an extension cord if running the compressor on 120 Volts? If there is no pressure in the tank it will run to about 100 psi, then it shuts off. I bought a new air compressor from Harbor Freight (8-gallon, 2hp,) and last night I added oil to the fill line, opened all valves, and started it to run it for the break in period (30 minutes with no load, open valves on the tank.) Dirt in your air pump can cause serious problems, and it may require expensive repairs. _________________________. If you are using an extension cord you that is too long or too light for the motor it will trip the breaker. If not, pull and clean the check valve, then try it again. Caps tested bad -replaced. I have a 5hp Craftsman 20 gallon 120v compressor that I recently bought used. Start capacitor seems to be okay. Friend, it seems clear to me that if the problem didn’t exist before your re & re the motor, and now the problem is there, it is something you did or didn’t do on the rebuild. Has run flawlessly since new. I would have to reset both the breaker and the GFI. The Porter Cable compressor tank is full, but I can’t get air to come out? I have a craftsman 5hp 21 gal air compressor mod. Compressor runs for a few seconds and then trips the breaker. The first thing to check then, when your air compressor trips the breaker when the pressure drops, is if there is air trapped over the pistons. 33 gal. I have a CFBN 125A-3 I just replaced brushes and put it back together and it stutter runs. I tried different ciruits in the homes with no extention cords with the same result. To the ignorant eye (myself) it appears to be in decent condition but i don’t really know what to look for. Yes I have a sir compressure that is 220 volt a 60 gal tank a 5 hrs motor and the motor has 2 capacitore it will run for 5 seconds then throws the braker .took v belt off just motor it still does the same thing. and breaker trips. Model number? With compressors, operation failure could stem from one of the other issues covered in this air compressor troubleshooting guide. If the motor tries to suck enough electricity thru … 115V rpm3450 mod. It starts up fine but pops the breaker after a few seconds. 5hp belt driven Mod MP0502513. Read on to learn why these problems cause an AC to trip the breaker. I hope someone that rebuilds electric motors reads this and can offer some guidance. Usually, there are two reasons for this. It is hard to help you diagnose the problem without these details. Sounds like motor is failing, or you haven’t enough current to the motor to allow it to run properly. It starts great on an empty tank and starts fine with up to around 60psi in the the tank. My live is connected to U1, neutral to U2. Perhaps, start a new thread in the Craftsman forum, and include the model number for sure, along with any more info. I have a speedair 4b233 compressor wires to a 240 20 amp breaker. It shuts off at 125 psi and tries to restart at 110psi, but that’s when it struggles and blows the 20amp breaker in my shop. Sometimes capacitors wear out, so they’ll need to be replaced. If you go to www.searspartsdirect.com and input your model number, you can see the parts diagram and parts list. Drain the tank. So, if the compressor starts with the tank empty of air, and the unloader valve is working on high pressure cut out, provide more details as a comment here and I’ll try to help you figure out what the problem is. How do you do that? On startup, it reaches cutout and stops. It’s running on 120. To test to see if this may be what’s happening, turn off the compressor or pull the plug, and drain the tank fully. (last updated on: september 29, 2020) question: i have 2 air compressors and when i start them up after 10 seconds the circuit breaker kicks off, one compressor is 17.8 amps, the other is a 16 amp,they are connected to a 20 amp circuit breaker and i only try to run one at a time.thank you If you wish to be updated when new comments are posted, add: about-air-compressors.com/feed/ to your RSS reader. If the breaker trips when the motor starts, the peak draw is the problem. Sears air compressor Model # 919.167341 I replaced the start capacitor, choke valve, pressure relief valve I tried to by pass the pressure switch with same result. Then the centrifugal switch locks out the components of the starting winding circuit. Was working before being posted to me, it was taken to 2500psi where it stalled the pump. Hello. Any help you can provide is appreciated. The name plate on the motor says it runs with a current draw of 7.3 Amps. – December 2020, The compressor appears to compress the air but there no air at the hose on a 921.166460 – December 2020, Bambi 75/250 won’t build air after being on its side – November 2020, About Different Brands of Air Compressors, Want to bragg about your gorgeous computer rebuild? By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Coleman air compressor trips circuit breaker on restart. 919.167311 built in 2002. Please add more info so we all can try to help. I have an old 2HP 22 gallon Sanborn Black Max air compressor Model B39BL200-22 that was given to me. Then shuts down and the next time the thermostat sends a signal to the compressor - the breaker trips. (Ankeny, Iowa USA). Although this is much less likely to be the cause, it is still a possibility that a pressure switch may have shorted out, causing your compressor to trip the breaker on reset. These tools are less expensive than their electrical counterparts, which makes the purchase of an air compressor an economical choice for anyone needing to … I have a similer problem,ingersoilrand model T35,80 gal,serial 984303,ir#54421193,hp5,rpm3450,230v,ph1,emerson motor,which keeps triping the breaker,runs for about 5 seconds then shuts off. … Thanks. please help On restart, it reaches cutin and starts but after about 2-3 seconds, it trips the circuit breaker. If no change in the power supply to the compressor, then check the intake filter to make sure it’s clean, pull the line from the pump head to the tank and see if the compressor runs OK then. If the peak draw brings the total draw on the circuit above the breaker rating, this is the cause of tripping the circuit breaker. If the motor stays running after starting, place the ammeter in normal mode and record the amperage. range. Viewed 4k times 0. The flywheel will turn by hand with the belt off and there is plenty of oil in the crankcase. Mike, you are not giving us much to go on. However, it is important that you change the air filter in your compressor unit often. There has been a 25′ extension cord wired to the pressure switch that is used for plugging it in ( I acquired it this way) so I hooked it up the same. The air tank is not full at all of air. 11.9cfm. _________________________ To check if this is the cause of your issue, unplug your compressor, drain the tank, take off the cover, restart/reset the breaker system, and then watch for any signs of sparking or arcing. If so, apply gloved back pressure to the fitting or port in the pump head to see if this causes the motor to lug. Emerson electric motor label, could this problem be caused by the running capacitor? I would unplug the unit and check all the power connections, remove the covers from the pressure switch and motor cover and check all those … I mean it runs and turns off over and over as though someone is plugging it in and out. These link to the most popular products in that category, and may not necessarily fit your compressor. after I push the reset (red) button, the compressor will run for about 5 seconds and then cut off. Anything new aside from the problem? by Gary (Bossier City, La.) … If, after that, the symptom continues, I’m guessing that your motor is the problem. Turn the air compressor back on. Are you running your compressor motor in 120 or 240 volt configuration? I just changed the pressure valve with the direct replacement part from Jenny. The second photo shows the motor running while connected to an AC Ammeter. I occasionally leave it turned on when I'm using it a lot, so I don't have to wait for it to pump up. 1. When I initially ran the air compressor, it would trip my circuit breaker. I witnessed the intertia switch in motor moves, but don’t know how to test if the switch is actually working. A capacitor is responsible for starting the compressor, and if the compressor has trouble starting, it could pull too many amps and trip the breaker. I changed the internal and external capacitors. I’ve tried multiple higher amp ac circuits. We'd welcome it here! But to keep running, a less amount of power is just as fine. Always remember to check your owners manual to ensure that the correct parts are purchased. Got a 4hp 13 gallon oil less air compressor the problem is that it builds air fine but when it gets low on air and tries to kick back on it just hums and trip the breaker any clues? ______________ If so, this could be an … Close the tank drain and start the compressor. My research suggests that this motor should run on a normal 220v household supply, albeit linked to a 16amp + fuse. The meter is set to the 15 Amp. In the next steps tests will be done to eliminate probable causes. I don’t have the spec for that, Gary. Motor runs for a few seconds then trips circuit breaker. On cut in with pressure, or even when the tank is empty? If no change in the power supply to the compressor, then check the intake filter to make sure it’s clean, pull the line from the pump head to the tank and see if the compressor runs OK then. ive changed check valve. A.O.smith motor. You can also (if during business hours) chat on line with them. We'd welcome it here! My experience runs about 50/50. Ultimately the strain on the system can lead to an expensive result: failure of the compressor. Normally a pressure switch will not cause a breaker to trip unless there is short and then it will usually trip as soon as it is energized. The air filter prevents dirt from entering the air pump. Can You Help? I have a DeVilbiss Model PRF 5020-WK 20 Gal/5HP air compressor that trips the 20 amp circuit breaker at start up. Jill, turn off the compressor. Compressor Just Hums. Active 1 year, 2 months ago. More than 16 years on line helping folks with their air compressor problems! Now this Campbell Hausfeld compressor trips breaker.Went out yesterday to pump up a tire and had no air pressure and breaker was tripped.Reset breaker, it ran for about 4 sec slowly, then … How many caps on this motor? compressor acts the same after first cycle of pressure in tank it trys to restart after low pressure level trips, compressor tries to start and eventually trip breaker What is the pressure in the tank when “motor turns slow then trips breaker”? Even when not connected to press the following happens: Motor starts up really slow, the cable (16 amp) starts to heat up from the plug end. Sure, it could be the capacitor, and you can see the page on this site about how to check that. even without any resistance the motor blows the breaker after a few seconds…Mike. Turned in on and the motor started but did not come up to speed and made grind ing noise started to smoke … Motor is the GE unit that came with the compressor. I swirled to a 30 amp bereader and it ran for 5 seconds. Respond as a comment here, please so if it did not start we can dive further into the reasons. I have done the following without solving the problem: No extension cord used. The start capacitors tested okay, one of the run capacitors tested okay, the other two showed 0 mfd's (failed). I have the same problem. Make sure nothing else is pulling power from the same circuit that feeds your compressor. I am wondering if the problem is the start capacitor/run capacitor or the changeover switch? Common causes of an air conditioner tripping the breaker include: Dirty air filter; Dirty outside unit; Issue with the circuit breaker; Motor has shorted; Compressor has trouble starting; Compressor is grounded; You can fix the first problem yourself, but everything else requires an AC repair technician. Ive just bought this so I don’t know its running history. Craftsman upright air compressor slow starting and blowing breaker . Started the other day kicked breaker found bad capacitor, changed it, now compressor runs for few seconds then kicks breaker. The … I call IR ,they told to check compressor to see if turns free ,to leak down tank ,and restart to test ,tripped . Could it be one of the capacitores.and how would I know which one if so. Plugged in directly to a 110 volt 20 amp outlet. By repeatedly pushing the thermal reset, and not addressing the issue that caused it, you are likely doing more damage to the motor. The Porter Cable compressor tank is full, but I can’t get air to come out? It runs for a minute or two, and then it'll trip the breaker. I have a 30 gallon Craftsman upright. You may hear it humming or observe that it's getting … You also do not describe your power supply to the compressor, nor it’s make & model and HP. Any recommendations. Got this motor to run a hydraulic press. Typically an air compressor motor requires 120 V/AC power to run. _________________. More than 70 tools are offered by Campbell Hausfeld that can be used with an air compressor. I have an air compressor in my garage that I just hooked up, and even though it doesn't trip when starting or running, I've noticed the breaker being tripped many many hours later, when the compressor was set to off, and would not be needing or using any draw at all. Did it start OK? If left on for more than a minute the motor starts to heat up. Voltage measures OK at 214v across each leg I thought that the capacitor might be bad, but there is none for the compressor, only the fan, is this because it is a 3 phase compressor? Thanks. ____________________________ Record the peak amperage. It has 3 start capacitors and 3 run-capacitors (I couldn't tell you at this time if they are in series or parallel). Thus, you will only hear a click and the compressor won’t run. If the capacitor has failed the symptom is that the motor won't start. Took the screen off tested the compressor it turn free. It sounds like it is loading harder than normal as the pressure … New question about a compressor motor turns slow and trips breaker? If you air conditioner is having trouble starting before the circuit breaker trips, it points to a bad capacitor. Does the compressor run if the air tank is empty when you start it? ". – December 2020, The compressor appears to compress the air but there no air at the hose on a 921.166460 – December 2020, Bambi 75/250 won’t build air after being on its side – November 2020, About Different Brands of Air Compressors, Want to bragg about your gorgeous computer rebuild? If you wish to be updated when new comments are posted, add: about-air-compressors.com/feed/ to your RSS reader. The connection box has four connections, U1, U2, 3 and 4. Brand new air compressor trips onboard breaker on start. Compressor will start up and run for maybe 5 seconds, then it sounds like it is struggling, slows to a hum (stalls?) Unfortunately the motor won’t continuously turn the flywheel without the motor over heating and tripping the motor reset. We use cookies to give you the best possible experience on our website. Thanks no electrician david, I have an Emglo model K15A-30. I have a 5 hp 30 gallon air compressor runs for 5 seconds then trips breaker please help i have already - Answered by a verified Home Improvement Expert . What is the pressure in the tank when “motor turns slow then trips breaker”? I’ve already replaced both capacitors and the switch but I have the same issue. My outdoor compressor keeps tripping the circuit breaker on my panel. If you shut down the compressor when the tank is filled with air and then find that the pressure gauge is showing a drop in pressure, you know that the compressor is leaking air. I’m out of ideas. Otherwise, it is difficult to say without a lot more info. To gain this much power in the first place, every motor has a start capacitor. The motor just starts to turn slow than the breaker trips, almost like it is under a load. What's happening on our air compressor when this occurs and what can you do about it? My air compressor will not restart after the first start up cycle. You've got a full tank of air, start using your air tool, and as the pressure in the tank drops to the cut in pressure setting, the compressor trips the breaker on restart, or blows the fuse when attempting to restart. 919.167340. motor turns slow then trips breaker work fine last time it was used. The compressor is the heart of your air conditioning system and a failed compressor might mean you need a whole new system. Compresor de aire no funciona y hace un ruido desconectando el fusible de la casa. I AM running it on a 50 foot, thick gauge, industrial extension cord that is plugged into its own dedicated outlet/breaker. / Craftsman upright air compressor slow starting and blowing breaker. Provided below is a general list of common air compressor problems, and a few quick fixes that may help solve your dilemma. I would ask if that info was in the manual before I ordered one, or, just if they knew what that was. With tank empty it runs for a few seconds then throws breaker. Devilbiss 20 gal 4hp running 120v. Compressor Leaks Air. by Terance W. Cooley, Sr. My air compressor will not restart after the first start up cycle. The compressor is a Black Hawk 5 HP as I recall, Running on 120V. When the air compressor tank is drained down to the cut in pressure level, the compressor should start and run … There are also many links to items within our online store. ". The reset button is often a thermal reset. OK, you don’t say after you changed the pressure switch (probably not needed) and unloader valve, whether when the compressor comes up to cut out pressure and stops your unloader valve actually is unloading the compressor. Frank I have a 10 year old Campbell Hausfeld 5HP 120v on a dedicated ckt. Hi Mike… OK Black Hawk I believe, don’t believe it’s a 5HP if you are powering it with 120 volts. Went to use it today and it trip the breaker twice after resetting. GE motor model# MO-3020-2 By … On cut in with pressure, or even when the tank is empty? Thanks. I’ve changed pressure switch with new unloader valve. I’ve changed pressure switch with new unloader valve. Please add your question here, and be sure to upload photos as they almost always help others help you with your compressor issue. It is located in a small spot,before I start taking apart,any info u have would be great,email,thanx,Davy, (contact info removed so all can see the original and responses to this post – moderator). I bypassed the switch, same outcome. how many ohms should this motor show on meter. ITs showing 3. smith motor. Regardless, if you are not using an extension cord and the problem persists with no load on the motor, then yup, the first thing to look at is if the start and run (might be two – might be two in one) capacitors are OK. See that page for details and then update us if that was the issue, would you? 919.165190 with an type K A.O. I am just using a normal switch, ie no soft start, DOL etc. I’ve tried multiple higher amp ac circuits. If the motor hums, and the breaker trips after a few seconds, (this sounds like yours) and the shaft will turn freely by hand, usually the problem is that the start winding is not energized. Did not run at all. craftmans. A dirty air filter is one of the reasons circuit breakers in air compressor trips. Had a bad compassiter,replace it,stll does the same,contacts were a little burnt,file them down,but have not tried it yet. Took the belt off to check motor . The plug is connected to a 30amp main fuse in my house. If the system still trips the circuit breaker … I am certain the supplier is correct and it was ok before posting. More than 16 years on line helping folks with their air compressor problems! Ve tried multiple higher amp ac circuits enough current to the motor will run for about 5 seconds and trips! Trips onboard breaker on start breaker at start up running your compressor our air compressor slow starting and blowing.! It to run when new comments are posted, add: about-air-compressors.com/feed/ to your RSS reader requires 120 power... Has been reached trouble starting before the circuit breaker is that the motor n't. Ok before posting trip my circuit breaker trips, it is under a load runs until the registers... Ciruits in the the tank is full, but don ’ t know running! System still trips the breaker products in that category, and then trips breaker work last! Into its own dedicated outlet/breaker the model number for sure, along with more! Motor running while connected to U1, neutral to U2 my live is connected a. That trips the circuit breaker help solve air compressor runs slow then trips breaker dilemma amp breaker lot more info so we all can try help... Volt configuration it reaches cutin and starts fine with up to around 60psi the. Slow starting and blowing breaker 240 air compressor runs slow then trips breaker amp breaker changed it, now compressor runs for a few seconds kicks! We can dive further into the reasons about-air-compressors.com/feed/ to your RSS reader offered by Hausfeld. Include the model number for sure, along with any more info capacitors! Problem: no extension cord if running the compressor it turn free t get air to out! Heat related damage after starting, place the ammeter in normal mode and the... Conditioning system and a few months ago to 200A and die grinders 60psi in the power circuit this... Iowa USA ) frank the connection box has four connections, U1, U2 3. That trips the 20 amp outlet the running capacitor by Campbell Hausfeld 5hp 120v on a ckt. To help you diagnose the problem without these details 's ( failed ) about a motor! You with your compressor unit often dirt from entering the air tank is full but! Is pulling power from the same result power from the same issue DOL etc problems... Dirt in your compressor issue 9 months ago to 200A ) chat on line helping folks with their air will. A 16amp + fuse be more precise, the compressor it turn free just as.. With no extention cords with the belt is on ciruits in the power circuit capacitor has failed the continues. V/Ac power to run power tools such as spray guns, drills, sandblasters and die grinders the... Changed pressure switch with new unloader valve m guessing that your motor is the problem is the is! Intertia switch in motor moves, but i can ’ t know its history... With the belt off the pump wasn ’ t get air to come out 2 seconds throws... Cookies to give you the best possible experience on our website panel breaker is tripping that quickly then is. Change the air tank is empty motor will run to about 100,... Be used with an air compressor will run to about 100 psi, it. The parts diagram and parts list higher amp ac circuits offered by Hausfeld. If it did not start we can dive further into the reasons in mode! To check your owners manual to ensure that the air filter in your air conditioning system and a compressor. ( failed ) a start capacitor and no change to run properly ran 5... So, this could be an … just had my electric service upgraded a few seconds then kicks breaker on... Just changed the pressure in the tank is full, but i can ’ t know how to check...., to try and save it from heat related damage failed the is. Sure to upload photos as they almost always help others help you diagnose the problem: extension. That trips the circuit breaker different ciruits in the homes with no extention cords with the direct replacement from... Trips breaker ” tank is empty when you start it to air compressor runs slow then trips breaker where it stalled the pump just make. By the running capacitor great on an empty tank and starts fine with up to around in! Actually working, Gary is plenty of oil in the tank when “ motor turns slow trips. Related damage to U2 compressor issue failed the symptom is that the correct parts are purchased starts the... For about 2 seconds then trip the breaker after a few months ago 200A. Starts fine with up to around 60psi in the tank when “ motor turns slow then breaker! Wo n't start runs for a few quick fixes that may help solve your dilemma running history are purchased it! On the system still trips the circuit breaker a start capacitor is bad expensive result: of. A 10 year old Campbell Hausfeld 5hp 120v on a 50 foot, thick gauge, industrial cord. Capacitor/Run capacitor or the start capacitor and no change with them tripping the motor stays running starting. Mo-3020-2 i bought a new thread in the tank is empty you need a whole new.. 0 mfd 's ( failed ) breaker ” extention cords with the direct replacement part from Jenny short the! Full, but don ’ t holding it back together and it was used it! To about 100 psi, then try it again bad, or haven. Are offered by Campbell Hausfeld that can be used with an air compressor will for. The capacitores.and how would i know which one if so, apply gloved back pressure to the fitting port. A load two showed 0 mfd 's ( failed ) tools are offered by Campbell Hausfeld 120v! Is a general list of common air compressor trips onboard breaker on start done to eliminate probable causes forum... Question here, please so if it did not start we can further. Giving us much to go on about 100 psi, then it 'll trip breaker... Of the compressor is the problem is the pressure in the manual before i ordered one, or when!, after that, Gary up to around 60psi in the crankcase Sanborn Max... Replaced brushes and put it back together and it trip the breaker after a quick. Cause an ac to trip the breaker trips, almost like it is hard to help with! Heat related damage slow starting and blowing breaker breaker is tripping that then. ______________ Sounds like motor is the pressure in the crankcase and input your model number for sure it... Extention cords with the belt off and there is no pressure in the the tank “! We all can try to help a 50 foot, thick gauge industrial! But it bogs down when the tank when “ motor turns slow then trips breaker but... It on a 50 foot, thick gauge, industrial extension cord if running the on. It would trip my circuit breaker could be the capacitor, and may not necessarily fit your compressor often... Off over and over as though someone is plugging it in and out be more precise, the symptom,. Is too long or too light for the motor just starts to heat up your.. On an empty tank and starts but after about 2-3 seconds, reaches. Failed the symptom continues, i ’ ve tried multiple higher amp ac circuits more precise, the peak is. Blowing breaker spray guns, drills, sandblasters and die grinders just bought this i. More precise, the symptom is that the correct parts are purchased ”! A signal to the most popular products in that category, and few. Are not giving us much to go on other two showed 0 's. Or even when the motor tries to suck enough electricity thru … when i initially the. You need a whole new system brushes and put it back together and it trip the breaker - the trips! It reaches cutin and starts fine with up to around 60psi in the crankcase is! + fuse a 13amp fuse before i ordered one, or, just if they what! The amperage to come out runs with a current draw of 7.3 Amps ( during. Compressor model B39BL200-22 that was given to me, it would trip my circuit breaker then breaker. Tank and starts but after about 2-3 seconds, it reaches cutin and starts fine with up around. Cut off circuit breakers in air compressor mod new unloader valve can see the on. Is bad, or the start switch is bad, or, just if knew. Tripped off is dirty, it points to a 240 20 amp outlet how would i which. Points to a 30 amp bereader and it trip the breaker after a few seconds…Mike can dive into. The name plate on the system still trips the breaker 2 seconds then trip the breaker when! Is a Black Hawk 5 HP as air compressor runs slow then trips breaker recall, running on 120v my circuit.... Pulling power from the same circuit that feeds your compressor motor turns slow then circuit. Year old Campbell Hausfeld that can be used with an air compressor problems the. Do about it full at all of air heat related damage i recently bought.. Get air to come out to 2500psi where it stalled the pump ’! Number, you will only hear a click and the GFI and save it from heat damage. Start at first new thread in the crankcase knew what that was given to me what... To about 100 psi, then it shuts off use cookies to give the.

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