Save the old run capacitor. It's probably still fine. I had to replace the start capacitor on mine and the run capacitor was still good. If you ordered from Amazon like I did they give the dimensions of those you can find one that would fit better than that compartment. You might want to put something in there to hold that capacitor in place so it's not moving around so much. Mine had thick rubber bands around it to hold it steady inside the cover. In fact before I put the new run capacitor on I could spin the motor by hand and turn it on and it would come up to normal running speed as if it was a bad centrifugal switch inside the motor. Additional information: If you have something like a bench grinder that just sits there and hums when you turn it on it's probably a bad centrifugal switch. With a bad centrifugal switch you can turn that motor either direction and it'll start picking up speed in that direction. The primary winnings determined the direction of the motor and the secondary windings speed it up to full speed in whichever direction it was already turning. Some people install a reversing switch on their bench grinder or their drill press for special procedures.
Totally off the theme of compressors, I have a condensing tumble dryer and had a humming noise coming from what I believe to be one of two capacitors housed behind the fan. Thought initially fan but having taken sides off it spins freely no noise from bearings. So….my issue is the missus ran the machine the other night and same annoying loud humming noise until nearly complete cycle when it tripped the rcd at consumer board. Today I took the wires off the capacitor terminals in turn one at a time and powered up the machine. Power on fine. When starting a cycle however it immediately trips the main rcd no matter which capacitor is disconnected at time. Would it therefore point to something else or would you expect an appliance to trip if the capacitor was not connected at all at the time of start up? Thanks. I know it’s a long shot but you obv have skills
When you connected the wires to the capacitor, you did not mention if the wires had to go to a specific terminal. Can the wires be hooked up to either terminal?
Good question. There are polarized capacitors that need to be installed a certain way, but these are usually small capacitors for circuit boards and the like. Appliance capacitors are generally not polarized and can be hooked up either way.
My dads compressor has the exact problem described Be replaced capacitors (to my knowledge with the right ones) and that didn't fix it He has an older one we use now but it's shit compared to the bigger one which is collecting dust now 😂
Good question. It’s definitely not necessary. If one of the capacitors is old and worn out I assume the other one is on its last legs. Since they’re cheap, I just did them both at once.
Hello there, I have just started the search for information to fix my air compressor Makita AC1300. Your film is the first one that I have come across. Can you help please. The problem I have with my compressor is that it will not restart after it has run low of air. It will start from the beginning with no air in the tank and build up to the required pressure. But once the air as depleted down to a lower level it struggles to restart. It just turns over slowly and does not restart. If the air is completely emptied from the air tank it will then restart. I have had the compressor for some years.!I bought it off eBay and it was only a matter of months old. It was stated that it was an ex display model ??? It may be better if I take a film of what I'm saying is going on with the machine. If I upload it onto RUclips I can then let you know the link. Might be can be for other people to repair their machine with the same problem. Do you think it might be some pressure valve or sensor. Thank you for any help. Kind regards, Daniel King.
I have an old like 20 years old..Coleman powermate (contractor portable) it’s a really good at keeping up with my Graco sprayer for bigger orange peel jobs it sounds like urs. Mines blowing the breaker and kinda like slow to start before been looking for that a capacitor mine was tapped on for years and it’s Disintegrated nothing left what tiny pieces. Think they have old Coleman parts? Thanks for the video! ur motor sounds exactly like that Coleman compressor I have.
Don't worry about it being a "coleman" capacitor. There's probably no such thing. Just research the ratings (microfarads) your compressor requires and buy any brand that meets those requirements.
@@anythingmechanical3399 a lady at A.O. Smith that’s a sticker on my Coleman said it’s an obsolete capacitor..I can’t find the damn microfarads number. On the electric motor that the capacitor sits by there is a Century AC Motor sticker (some info I can make out) A.O Smith SER1- BY03-20 Hz 60 Voltz 115 Amp 15.0 More numbers on that sticker but hard to read properly The Coleman Powermate numbers on the serial/part number are Model Number CP0200312 Serial number B23911890 Hey thanks for the feedback! I know they might not make the exact size of my old capacitor ..what would be close in comparison? Any ideas are welcome no biggie
Probably not. Best option is to just search online for the capacitor ratings that go with your compressor. Next best option, there are tables online with rough capacitor ratings by motor size.
It might on it's placard. Or under a cover may contain that and/or a diagram. Otherwise try to look up a technical sheet for the make/model number of the motor, online. Supposedly you want to be sure to get the correct size uF for the motor else it will either overheat or trip a breaker. ..it needs to be sized for the motor windings.
Hey would anyone be so kind to comment below letting me know if and how one can test the capacitors to see if they are working properly or not. Thanks in advance yall!
@oscarfernandez9964 Yes, easy to test with a cheap Harbor Freight multimeter. I tested the capacitor on my swimming pool pump motor that way. Search RUclips for Capacitor Testing. There are lots of videos.
The problem I was having was at startup, which is why I replaced the start capacitor. Afterward I plugged it in and the motor fired right up as it is supposed to. Has been working right ever since
It only matters in DC electricity with electrolytic capacitors, with AC electricity the polarity is constantly switching from positive to negative at 60HZ so polarity is meaningless. If you are working with something like an air conditioning system, the cap may have more than 2 terminals, in which case you are working with a split capacitor (2 capacitors in 1), one common terminal and 2 different size caps on the other 2 terminals. Pay attention in that case because it can be connected wrong, terminals are usually marked in that case.
@@arroyofive9259it takes a great surge of energy to start the motor. a capacitor is used to store electricity and release it quickly so it can help the motor with the needed demand. when the capacitor is damaged the existing electrical circuit can't meet the demand, so it pops the breaker.
Thank you for your instructions.
Great video. Mine is hard to get going when it's cold. It trips the breaker to. It's oilless, but it comes with compressor oil.
great video thanks very much, you info help a lot as my compressors doing somethin similar.
many thanks
barry
Save the old run capacitor. It's probably still fine.
I had to replace the start capacitor on mine and the run capacitor was still good.
If you ordered from Amazon like I did they give the dimensions of those you can find one that would fit better than that compartment.
You might want to put something in there to hold that capacitor in place so it's not moving around so much. Mine had thick rubber bands around it to hold it steady inside the cover.
In fact before I put the new run capacitor on I could spin the motor by hand and turn it on and it would come up to normal running speed as if it was a bad centrifugal switch inside the motor.
Additional information:
If you have something like a bench grinder that just sits there and hums when you turn it on it's probably a bad centrifugal switch.
With a bad centrifugal switch you can turn that motor either direction and it'll start picking up speed in that direction.
The primary winnings determined the direction of the motor and the secondary windings speed it up to full speed in whichever direction it was already turning.
Some people install a reversing switch on their bench grinder or their drill press for special procedures.
Thanks great video I got one it was tiny lol
yeah, technology is improving rapidly.
Totally off the theme of compressors, I have a condensing tumble dryer and had a humming noise coming from what I believe to be one of two capacitors housed behind the fan. Thought initially fan but having taken sides off it spins freely no noise from bearings. So….my issue is the missus ran the machine the other night and same annoying loud humming noise until nearly complete cycle when it tripped the rcd at consumer board. Today I took the wires off the capacitor terminals in turn one at a time and powered up the machine. Power on fine. When starting a cycle however it immediately trips the main rcd no matter which capacitor is disconnected at time. Would it therefore point to something else or would you expect an appliance to trip if the capacitor was not connected at all at the time of start up?
Thanks. I know it’s a long shot but you obv have skills
thx for the diy repair. BUT after i replaced both capacitors...no luck ;>(
When you connected the wires to the capacitor, you did not mention if the wires had to go to a specific terminal. Can the wires be hooked up to either terminal?
Good question. There are polarized capacitors that need to be installed a certain way, but these are usually small capacitors for circuit boards and the like. Appliance capacitors are generally not polarized and can be hooked up either way.
Great video thanks, if the specs are good will the size really matter? Not sure which # are important to go by
Thanks. No, size doesn't matter lol. Just make sure the specs are the same
My dads compressor has the exact problem described
Be replaced capacitors (to my knowledge with the right ones) and that didn't fix it
He has an older one we use now but it's shit compared to the bigger one which is collecting dust now 😂
Awesome video I and no idea that air compressor had capacitors Hahaha
I have one question Why did you replace both capacitors?
Thanks
Good question. It’s definitely not necessary. If one of the capacitors is old and worn out I assume the other one is on its last legs. Since they’re cheap, I just did them both at once.
@@anythingmechanical3399
Great Thank you
Hello there, I have just started the search for information to fix my air compressor Makita AC1300. Your film is the first one that I have come across. Can you help please. The problem I have with my compressor is that it will not restart after it has run low of air. It will start from the beginning with no air in the tank and build up to the required pressure. But once the air as depleted down to a lower level it struggles to restart. It just turns over slowly and does not restart. If the air is completely emptied from the air tank it will then restart. I have had the compressor for some years.!I bought it off eBay and it was only a matter of months old. It was stated that it was an ex display model ???
It may be better if I take a film of what I'm saying is going on with the machine. If I upload it onto RUclips I can then let you know the link.
Might be can be for other people to repair their machine with the same problem.
Do you think it might be some pressure valve or sensor.
Thank you for any help.
Kind regards, Daniel King.
I have an old like 20 years old..Coleman powermate (contractor portable) it’s a really good at keeping up with my Graco sprayer for bigger orange peel jobs it sounds like urs. Mines blowing the breaker and kinda like slow to start before been looking for that a capacitor mine was tapped on for years and it’s Disintegrated nothing left what tiny pieces. Think they have old Coleman parts? Thanks for the video! ur motor sounds exactly like that Coleman compressor I have.
Don't worry about it being a "coleman" capacitor. There's probably no such thing. Just research the ratings (microfarads) your compressor requires and buy any brand that meets those requirements.
@@anythingmechanical3399 a lady at A.O. Smith that’s a sticker on my Coleman said it’s an obsolete capacitor..I can’t find the damn microfarads number. On the electric motor that the capacitor sits by there is a Century AC Motor sticker (some info I can make out)
A.O Smith
SER1- BY03-20
Hz 60
Voltz 115
Amp 15.0
More numbers on that sticker but hard to read properly
The Coleman Powermate numbers on the serial/part number are
Model Number CP0200312
Serial number B23911890
Hey thanks for the feedback! I know they might not make the exact size of my old capacitor ..what would be close in comparison? Any ideas are welcome no biggie
I’m in the same boat,I need both capacitors
I found mine on Amazon
I’m suspecting the same with mine but I can’t read it on the capacitor. Will the motor tell you what kind of capacitor I need?
Probably not. Best option is to just search online for the capacitor ratings that go with your compressor. Next best option, there are tables online with rough capacitor ratings by motor size.
@@anythingmechanical3399 ok thank you!!
It might on it's placard. Or under a cover may contain that and/or a diagram. Otherwise try to look up a technical sheet for the make/model number of the motor, online. Supposedly you want to be sure to get the correct size uF for the motor else it will either overheat or trip a breaker. ..it needs to be sized for the motor windings.
Mine will strat then shut off immediately..I'm thinking run cap?
Hey would anyone be so kind to comment below letting me know if and how one can test the capacitors to see if they are working properly or not.
Thanks in advance yall!
@oscarfernandez9964 Yes, easy to test with a cheap Harbor Freight multimeter. I tested the capacitor on my swimming pool pump motor that way. Search RUclips for Capacitor Testing. There are lots of videos.
But you didn’t do a load test after it filled up that’s when you said it would trip the breaker not at first start up ?
The problem I was having was at startup, which is why I replaced the start capacitor. Afterward I plugged it in and the motor fired right up as it is supposed to. Has been working right ever since
I have a question To connect them positive and negative or it doesn't matter.
Short answer - yes it matters. Whenever possible, take pictures of the way the old part was installed and install the new part the same way.
No, it does not matter for capacitors.
@@BuildItFixItDIYmay I know why? I’m just trying to learn
It only matters in DC electricity with electrolytic capacitors, with AC electricity the polarity is constantly switching from positive to negative at 60HZ so polarity is meaningless.
If you are working with something like an air conditioning system, the cap may have more than 2 terminals, in which case you are working with a split capacitor (2 capacitors in 1), one common terminal and 2 different size caps on the other 2 terminals. Pay attention in that case because it can be connected wrong, terminals are usually marked in that case.
@@arroyofive9259it takes a great surge of energy to start the motor. a capacitor is used to store electricity and release it quickly so it can help the motor with the needed demand. when the capacitor is damaged the existing electrical circuit can't meet the demand, so it pops the breaker.
How much was it for both capacitors?
I just spent $30 on Amazon for the exact same one