Our Book www.acservicetech.com/the-book Tool List- www.amazon.com/shop/acservicetech Support The Channel- www.patreon.com/acservicetech Potential Relay Video ruclips.net/video/IhVY8bYFIKE/видео.html PTC Thermistor Video ruclips.net/video/P0JUUCEQl-U/видео.html Common Relays Video ruclips.net/video/HaRg8IRP-Uo/видео.html Compressor Common, Start, Run Video ruclips.net/video/NxseKu60kYA/видео.html UEI DL479 Multimeter with temp sensor amzn.to/2jtsUbJ Valve Core Removal Tool amzn.to/2uYr8WL Blue Vapor Yellow Jacket Gauge- amzn.to/2Ju7pan Red Liquid Yellow Jacket Gauge- amzn.to/2sSFmGH Quick Coupler for the Gauges- amzn.to/2sTk8Ze JB Test Gauge High Side- amzn.to/2ruQb0l JB Test Gauge Low Side- amzn.to/2qR0utM Manual Copper Tube Swage/Expander- amzn.to/2WRPa1M Uniweld Hydraulic Swaging Tool- amzn.to/2MlrI8m Uniweld Swage and Flare Kit- amzn.to/2T55jyn Ameriflame Oxy Acetylene Torch Setup- amzn.to/2SRm3JF #2 Tip for Oxy Acetylene Torch- amzn.to/2SPDaeD Cap-N-Hook Tip for Oxy Acetylene- amzn.to/2MbhpUk Air Acetylene Torch Setup- amzn.to/2aQalsb 15% Silver Brazing Rods- amzn.to/2gVLyLc Nitrogen Regulator- amzn.to/2bXdR5f Nitrogen Flow Meter- amzn.to/2brvoBg NitroVue Flow Reg- amzn.to/2MiulYv Ultrasonic Leak Detector- amzn.to/2Lw4Zpr UEI DL479 Multimeter with temp sensor amzn.to/2jtsUbJ Magnet Jumpers- amzn.to/2PyKPQZ Alligator Jumpers- amzn.to/2PxqJXn Fieldpiece ST4 Dual Temp Meter amzn.to/2wc1ME3 Fieldpiece Bead K Type Temp Sensor amzn.to/2DBwKfs Fieldpiece Wet Bulb Temp Sensor amzn.to/2RRI7Tw Fieldpiece TC24 Temp Clamp amzn.to/2qHLyjZ Yellow Jacket Refrigerant Gauge Set amzn.to/2aenwTq Refrigerant hoses with valves amzn.to/2aBumVI Yellow Jacket Gauge set & hoses amzn.to/2vLVkV9 Yellow Jacket 4 Port Manifold w Hoses amzn.to/2BkuGIq FieldpieceSMAN360 Digital Manifold Set amzn.to/2BdoaD4 FieldpieceSMAN460 Digital Manifold Set amzn.to/2nB4Fe6 Compact Ball Valve for Refrigerant Hose amzn.to/2KUisW8 QuickDisconnect 90 for refrigerant hose amzn.to/2MMtVcg JB 6 CFM Vacuum Pump amzn.to/2nqbvo8 Appion Blue 3/8" to 1/4" Vacuum Hose amzn.to/2uYlVyc Appion Red 3/8" to 1/4" Vacuum Hose amzn.to/2uYg6Ro Appion Valve Core Removal Tool amzn.to/2uYr8WL Yellow Jacket 1/4" by 1/4" hose amzn.to/2umtcod CPS Vacuum Micron Gauge amzn.to/2v1nM3O Supco Vacuum Micron Gauge amzn.to/2v1JRiA RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn UEI DL389 Multimeter amzn.to/2xAdaJf Other tool links can be found in the video description section. Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal- www.amazon.com/shop/acservicetech
What could be the problem if there was a power surge and now the compressor starts but gets very hot and the protector breaks the connection. I noticed the compressor gets really hot. Since the compressor works and starts I was planning on changing the relay and the protector, but would like some advice on that.
This has been a fun exercise to help understand how these little devices work. With no power, the current relay contacts are normally open. Like most motors, current draw from the motor is highest when the rotor is not spinning because the fixed rotor is unable to produce significant back EMF. The current relay windings are in series with the motor run windings. So, as soon as the relay sees big current, it lifts the relay plunger up to close the contacts, allowing the start capacitor and start windings to help overcome mechanical resistance and get the rotor up to speed. As the rotor spools up, the run windings begin to exert a back EMF because of the way the motor becomes a reverse electrical generator at high speeds. This back EMF reduces current through the windings, protecting the motor, improving motor efficiency, and reducing the (still forward) current through that little relay. Eventually, even though the motor is up to speed and a small current is still flowing, there isn't enough current to hold the relay contacts together and gravity pulls the plunger down, taking the start cap out of the equation. Elegantly simple.
Thanks for another great video. I’ve been the business for 15 years and I’ve only worked one fractional compressor like that. I think it was on a water fountain. Keep up the work, your videos are really appreciated.
Hi sir, i'm an electromecanician here in quebec Canada and i got a trouble on a enclosure unit on a electrical cabinet with vfd and a lot of contactors and this video make me understand 100% ...thank you for the knowledge!!! Tomorrow this compressor will start!!!
Thanks for the great video very easy to understand. I checked my relay and found it was not working some WD SPRAY and hopefully it will work till a replacement arrives.
Hi, thanks for the video. I have a question. In the uk you have live, neutral and ground which one of these wires do I connect to the common pin?. Thanks
I have the Start Relay you show at the 7:20 mark (it has three prongs where only two wires are connected) and it reads 5.5 ohms and does not rattle. I have the Overload you show at the 8:06 mark and it reads 0.6 ohms. In short, everything works on my GE GBS22KBSBCC refrigerator except the fridge will not go below 40F and the freezer will not go below 33F. So, what would not allow strong cooling .....if the start relay was bad or the capacitor? Defroster, thermistors, evaporator fan, condenser fan are all working and the coils are spotless. I even checked the three prongs on the condenser and got a 8.4 ohm on the two main prongs, 4.5 ohms on the left and 4.2 ohms on the right. My Embraco 1PH condenser has a label on the side reading "LRA of 11.5 EGU 70HLC' 115 - 127 V". My multimeter read 0.8 amps when it is running. The Capacitor multimeter read 11.85 uF (210 VAC 50/60 Hz @ 12 uF). Some history - In July 2016 I did had a technician add R 134a and in October 2018 I had to add an evaporator thermistor since my evaporator coils were an iceberg and it was not triggering the defrost mode; refrigerator was warm but freezer worked fine. NOTE: I made a video of the Start Relay arcing with the Overload when the compressor was called for power; there was just a click sound but no compressor. Then, 90 seconds later, it called on it again and the compressor hummed away. When I took it apart again the Star Relay gave the same reading but I noted it was VERY hot. Could this Relay still be bad but not activating all the time thus overheating because it is sometimes working? If so, maybe this is why the temperatures cannot catch up. With that said, I do not know the spec for my compressor amps but had some hand written notes from the 2006 technician (when he filled my R143a) stating the original amps were 0.7 and after he added 4.5# the amps were 1.55. His notes also read "spec = 1.5 to 1.7 amps). Should I purchase a new Relay and, if so, is it "good practice" to purchase a new Overload, also? They are very pricy at $76 and $80, respectively......for a piece of plastic! ANY direction would be greatly appreciated by you.
Great! Very interesting! Where this compressors are used? I met one looks the same in condensing unit for small walk in cooler wine room. R134a. Thank you.
They are on small refrigerators and freezers sometimes. The ptc thermistors however are more common on those smaller reciprocating compressors. I just wanted to make sure that I went over them, thanks
For helpful video like always. I have a compressor that continues to run even after the refrigerator (Delfield reach-in) has reached temp. T-stat is new and set to lowest cooling setting but fridge was at 20 degrees this morning. Could this be a bad relay that's stuck closed?
Do some compressors not use a capacitor? I have this old Eaton Viking dehumidifier from likely the 70's and there's no capacitor to be found on it. Relay is acting up and with a 3 n1 universal relay someone said to remove the old capacitor when installing it,but I can't find a capacitor on it.The big cover is off but I don't see one.
I'm trying to start a 3 phase motor that is not a compressor and will not be under a big load at start. Would this still be needed? I'm trying to use a VFD and it describes this component in an example circuit.
Hi Craig, Do you plan on putting this out in a real book we can keep in the van for reference? A Spiral bound 8 1/2 X 11 book would be great in my opinion.
Absolutely I do. The print shop is working on them as we speak. I don't have a date to share yet for when I will have the bulk order of paperbacks in but they will be spiral bound with slightly glossy pages. I will send out an update when they are ready. Make sure that you are on the updates list at acservicetech.com and thanks a lot bobrub!
When's the paperback version coming and is it good for someone with really no HVAC knowledge at all? I'm an install helper but not really learning so I am going to school in August but want a book I can read outside of work until I go to school to soak up as much info as possible.
Yes the book will be highly beneficial and it progresses as you read it. Check out the full outline at acservicetech.com/the-book The paperback will be out in a couple weeks. If you have an ipad or computer the ebook is available now, thanks! As you come across questions about the trade, feel free to ask them in these comment sections, thanks!
When I do the upright and and upside-down test, mybreadings are never steady even when i test new relay. I make sure i raddle the relay before testing but sometimes it reads OL on both attemps, then if im lucky i get a reading of 2.5. That's with a bad and new one.
I hear the relay contacts click when the compressor starts, but I don't hear the iron core plunger drop back out with gravity. Is it a slow, gradual process of falling back out or is it fast? How many seconds does it take for the compressor to start up--almost immediately the relay then drops out? Can you hear it drop?
Hi Sr, do you have a video explaining why the A/C compressors doesn't use a potential relay and the start capacitor, and why the refrigeration compressors use it, can you explain please
Refrigeration compressors work even when it is colder outside and need help starting. Some txv's on refrigeration units don't allow for pressure equalization. Most heat pumps have a potential relay or some other starting device. Only some ac units come equipped with a potential relay but they turn on and run when it is warmer out. I don't have a specific video on that, thanks!
hey got a question for replacement current starting relay. I have an old sub zero fridge which the freezer is no longer cooling (refrigeration is still fine). The old relay (PB24 3ARR12) I pulled out was measure about 120 ohms which i guess is too high. My question is will any 3arr12 relay do the trick? Thanks
When my thermostat in my refrigerator shuts off the compressor I hear two clicks, which have gotten louder over time. Is it possibly the start relay getting ready to fail?
Ask u a question, what opens the switch internally in the system start relay? The capacitor, the temperature, the resistor or it never opens. I was thinking the resistor
It is normally in the open position. The current generated induces power to the coil turning it into a magnet pulling up the iron core and contacts. Then after the motor current reduces, the amount of power induced into the electrical coil lowers and the iron core falls disconnecting the contacts.
I think that in small instruments like food processor you don't need the relay at all. The relay is all the time in on position. Those instruments don't have a start capacitor at all only run capacitor to generate the "second' phase to run the motor. It is only a source of potential trouble and you can live without it.
Relay linemain poi t runing point line power coil and other in sidd engrgsing main ruing point maing startinv oint othef N ..line givd comon pointed c .comprssor point compelted li lms ..resly frigdusinv resly using
Our Book www.acservicetech.com/the-book
Tool List- www.amazon.com/shop/acservicetech
Support The Channel- www.patreon.com/acservicetech
Potential Relay Video ruclips.net/video/IhVY8bYFIKE/видео.html
PTC Thermistor Video ruclips.net/video/P0JUUCEQl-U/видео.html
Common Relays Video ruclips.net/video/HaRg8IRP-Uo/видео.html
Compressor Common, Start, Run Video ruclips.net/video/NxseKu60kYA/видео.html
UEI DL479 Multimeter with temp sensor amzn.to/2jtsUbJ
Valve Core Removal Tool amzn.to/2uYr8WL
Blue Vapor Yellow Jacket Gauge- amzn.to/2Ju7pan
Red Liquid Yellow Jacket Gauge- amzn.to/2sSFmGH
Quick Coupler for the Gauges- amzn.to/2sTk8Ze
JB Test Gauge High Side- amzn.to/2ruQb0l
JB Test Gauge Low Side- amzn.to/2qR0utM
Manual Copper Tube Swage/Expander- amzn.to/2WRPa1M
Uniweld Hydraulic Swaging Tool- amzn.to/2MlrI8m
Uniweld Swage and Flare Kit- amzn.to/2T55jyn
Ameriflame Oxy Acetylene Torch Setup- amzn.to/2SRm3JF
#2 Tip for Oxy Acetylene Torch- amzn.to/2SPDaeD
Cap-N-Hook Tip for Oxy Acetylene- amzn.to/2MbhpUk
Air Acetylene Torch Setup- amzn.to/2aQalsb
15% Silver Brazing Rods- amzn.to/2gVLyLc
Nitrogen Regulator- amzn.to/2bXdR5f
Nitrogen Flow Meter- amzn.to/2brvoBg
NitroVue Flow Reg- amzn.to/2MiulYv
Ultrasonic Leak Detector- amzn.to/2Lw4Zpr
UEI DL479 Multimeter with temp sensor amzn.to/2jtsUbJ
Magnet Jumpers- amzn.to/2PyKPQZ
Alligator Jumpers- amzn.to/2PxqJXn
Fieldpiece ST4 Dual Temp Meter amzn.to/2wc1ME3
Fieldpiece Bead K Type Temp Sensor amzn.to/2DBwKfs
Fieldpiece Wet Bulb Temp Sensor amzn.to/2RRI7Tw
Fieldpiece TC24 Temp Clamp amzn.to/2qHLyjZ
Yellow Jacket Refrigerant Gauge Set amzn.to/2aenwTq
Refrigerant hoses with valves amzn.to/2aBumVI
Yellow Jacket Gauge set & hoses amzn.to/2vLVkV9
Yellow Jacket 4 Port Manifold w Hoses amzn.to/2BkuGIq
FieldpieceSMAN360 Digital Manifold Set amzn.to/2BdoaD4
FieldpieceSMAN460 Digital Manifold Set amzn.to/2nB4Fe6
Compact Ball Valve for Refrigerant Hose amzn.to/2KUisW8
QuickDisconnect 90 for refrigerant hose amzn.to/2MMtVcg
JB 6 CFM Vacuum Pump amzn.to/2nqbvo8
Appion Blue 3/8" to 1/4" Vacuum Hose amzn.to/2uYlVyc
Appion Red 3/8" to 1/4" Vacuum Hose amzn.to/2uYg6Ro
Appion Valve Core Removal Tool amzn.to/2uYr8WL
Yellow Jacket 1/4" by 1/4" hose amzn.to/2umtcod
CPS Vacuum Micron Gauge amzn.to/2v1nM3O
Supco Vacuum Micron Gauge amzn.to/2v1JRiA
RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn
UEI DL389 Multimeter amzn.to/2xAdaJf
Other tool links can be found in the video description section.
Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal- www.amazon.com/shop/acservicetech
What could be the problem if there was a power surge and now the compressor starts but gets very hot and the protector breaks the connection. I noticed the compressor gets really hot. Since the compressor works and starts I was planning on changing the relay and the protector, but would like some advice on that.
The best videos on the innerwebs
This has been a fun exercise to help understand how these little devices work. With no power, the current relay contacts are normally open. Like most motors, current draw from the motor is highest when the rotor is not spinning because the fixed rotor is unable to produce significant back EMF. The current relay windings are in series with the motor run windings. So, as soon as the relay sees big current, it lifts the relay plunger up to close the contacts, allowing the start capacitor and start windings to help overcome mechanical resistance and get the rotor up to speed. As the rotor spools up, the run windings begin to exert a back EMF because of the way the motor becomes a reverse electrical generator at high speeds. This back EMF reduces current through the windings, protecting the motor, improving motor efficiency, and reducing the (still forward) current through that little relay. Eventually, even though the motor is up to speed and a small current is still flowing, there isn't enough current to hold the relay contacts together and gravity pulls the plunger down, taking the start cap out of the equation. Elegantly simple.
Your explanation is dope
Thanks for another great video. I’ve been the business for 15 years and I’ve only worked one fractional compressor like that. I think it was on a water fountain. Keep up the work, your videos are really appreciated.
Yeah most smaller compressors use the ptc thermistor but I wanted to make sure that this one was covered too, thanks!
Hi sir, i'm an electromecanician here in quebec Canada and i got a trouble on a enclosure unit on a electrical cabinet with vfd and a lot of contactors and this video make me understand 100% ...thank you for the knowledge!!! Tomorrow this compressor will start!!!
Thanks a lot Nassim!
This is excellent explanation. Appreciate you making it so clear and concise. Appreciate your time putting this together.
Glad you enjoyed it!
Coffee with Craig.
What better way to start the day!
Ah Coffee, the lifeblood of the HVAC Tech! Thanks Tom!
The Florida pool pump motor bearing repair guy When Service Calls Longwood approved ! that was good info
Great video Craig!!!! Helps me understand them so much better. Can't wait for your other book! Thanks again!
Other books will take quite a while but I am presently working on a workbook to go along with the paperback we have out, thanks Nick-O
@@acservicetechchannel as long as the other book will be like this last one, it will be worth the wait. Take care.
Does the relay only control the compressor? If the relay is faulty - will the compressor fan still work?
Thank you for the great video and insight
Thank you. Very helpful and informative video.
Very nice & to the point video. Keep it up.
Glad you liked it
I'm a big follower... Thanks for the wisdom 🙌
Thank you for this video. I love the book too!
Excellent excellent video
Thank you very much!
Thanks for the great video very easy to understand. I checked my relay and found it was not working some WD SPRAY and hopefully it will work till a replacement arrives.
Excellent video
Thanks Kenny!
So many compressors get condemned when it’s just a bad relay. Great video👍👍
Absolutely, thanks a lot Nor-cal!!!
Hi, thanks for the video. I have a question. In the uk you have live, neutral and ground which one of these wires do I connect to the common pin?. Thanks
very nice useful explanation.
I have the Start Relay you show at the 7:20 mark (it has three prongs where only two wires are connected) and it reads 5.5 ohms and does not rattle. I have the Overload you show at the 8:06 mark and it reads 0.6 ohms. In short, everything works on my GE GBS22KBSBCC refrigerator except the fridge will not go below 40F and the freezer will not go below 33F. So, what would not allow strong cooling .....if the start relay was bad or the capacitor? Defroster, thermistors, evaporator fan, condenser fan are all working and the coils are spotless. I even checked the three prongs on the condenser and got a 8.4 ohm on the two main prongs, 4.5 ohms on the left and 4.2 ohms on the right. My Embraco 1PH condenser has a label on the side reading "LRA of 11.5 EGU 70HLC' 115 - 127 V". My multimeter read 0.8 amps when it is running. The Capacitor multimeter read 11.85 uF (210 VAC 50/60 Hz @ 12 uF). Some history - In July 2016 I did had a technician add R 134a and in October 2018 I had to add an evaporator thermistor since my evaporator coils were an iceberg and it was not triggering the defrost mode; refrigerator was warm but freezer worked fine. NOTE: I made a video of the Start Relay arcing with the Overload when the compressor was called for power; there was just a click sound but no compressor. Then, 90 seconds later, it called on it again and the compressor hummed away. When I took it apart again the Star Relay gave the same reading but I noted it was VERY hot. Could this Relay still be bad but not activating all the time thus overheating because it is sometimes working? If so, maybe this is why the temperatures cannot catch up. With that said, I do not know the spec for my compressor amps but had some hand written notes from the 2006 technician (when he filled my R143a) stating the original amps were 0.7 and after he added 4.5# the amps were 1.55. His notes also read "spec = 1.5 to 1.7 amps). Should I purchase a new Relay and, if so, is it "good practice" to purchase a new Overload, also? They are very pricy at $76 and $80, respectively......for a piece of plastic! ANY direction would be greatly appreciated by you.
thank you, partner, for sharing!!!!! Excellent video's.
Glad to help, thanks!
is a compressor protector used with PTC thermistor as well or just the current starting relay?
Great! Very interesting! Where this compressors are used? I met one looks the same in condensing unit for small walk in cooler wine room. R134a. Thank you.
They are on small refrigerators and freezers sometimes. The ptc thermistors however are more common on those smaller reciprocating compressors. I just wanted to make sure that I went over them, thanks
Thanks very much. This was really helpful.
Glad to help Dadla!
For helpful video like always. I have a compressor that continues to run even after the refrigerator (Delfield reach-in) has reached temp. T-stat is new and set to lowest cooling setting but fridge was at 20 degrees this morning. Could this be a bad relay that's stuck closed?
No, it is likely the thermostat in wired on the NC terminal instead of the no terminal. This current starting relay is just for starting, thanks!
Great video ,, many thx
Glad you enjoyed it
Do some compressors not use a capacitor?
I have this old Eaton Viking dehumidifier from likely the 70's and there's no capacitor to be found on it.
Relay is acting up and with a 3 n1 universal relay someone said to remove the old capacitor when installing it,but I can't find a capacitor on it.The big cover is off but I don't see one.
You teach L1 (hot) connect to run terminal. Why some videos teach connect L1 ( hot) to overload then to common terminal ? I am a little confusing!
What happens when the start relay gets stuck closed? Does the compressor not work or does it damage the compressor?
Great video!
Thanks Procharger94!
@@acservicetechchannel Your videos have helped out a lot. Very clear and to the point.
Thanks a lot!
Thanks very much!
Glad it helped!
i have a relay that has start and run but two screws labeled 1 & 2 what are they ?
I'm trying to start a 3 phase motor that is not a compressor and will not be under a big load at start. Would this still be needed? I'm trying to use a VFD and it describes this component in an example circuit.
Hi Craig, Do you plan on putting this out in a real book we can keep in the van for reference?
A Spiral bound 8 1/2 X 11 book would be great in my opinion.
Absolutely I do. The print shop is working on them as we speak. I don't have a date to share yet for when I will have the bulk order of paperbacks in but they will be spiral bound with slightly glossy pages. I will send out an update when they are ready. Make sure that you are on the updates list at acservicetech.com and thanks a lot bobrub!
can the relay get fried? mine is clearly burnt and i purchased a new one, i hope it fixes the problem!
Is the start relay for refrigeration all time? For the AC system, the start relay is not always necessary?
If the start and run was connected all the time what would happen at 4:26 in video?
When's the paperback version coming and is it good for someone with really no HVAC knowledge at all? I'm an install helper but not really learning so I am going to school in August but want a book I can read outside of work until I go to school to soak up as much info as possible.
Yes the book will be highly beneficial and it progresses as you read it. Check out the full outline at acservicetech.com/the-book The paperback will be out in a couple weeks. If you have an ipad or computer the ebook is available now, thanks! As you come across questions about the trade, feel free to ask them in these comment sections, thanks!
Smith66, good news! As of today, the paperback is now available at www.acservicetech.com !!!
When I do the upright and and upside-down test, mybreadings are never steady even when i test new relay. I make sure i raddle the relay before testing but sometimes it reads OL on both attemps, then if im lucky i get a reading of 2.5. That's with a bad and new one.
I hear the relay contacts click when the compressor starts, but I don't hear the iron core plunger drop back out with gravity. Is it a slow, gradual process of falling back out or is it fast? How many seconds does it take for the compressor to start up--almost immediately the relay then drops out? Can you hear it drop?
I Just wanna clarify that L1 power goes to Main or Run winding. Not to start winding
Hi Sr, do you have a video explaining why the A/C compressors doesn't use a potential relay and the start capacitor, and why the refrigeration compressors use it, can you explain please
Refrigeration compressors work even when it is colder outside and need help starting. Some txv's on refrigeration units don't allow for pressure equalization. Most heat pumps have a potential relay or some other starting device. Only some ac units come equipped with a potential relay but they turn on and run when it is warmer out. I don't have a specific video on that, thanks!
thank you kind sir.
Glad to help!
How to identify the comprises sizes without sticker
hey got a question for replacement current starting relay. I have an old sub zero fridge which the freezer is no longer cooling (refrigeration is still fine). The old relay (PB24 3ARR12) I pulled out was measure about 120 ohms which i guess is too high. My question is will any 3arr12 relay do the trick? Thanks
When my thermostat in my refrigerator shuts off the compressor I hear two clicks, which have gotten louder over time. Is it possibly the start relay getting ready to fail?
Can you see the how to check compressur pumpeing
Nice video..
Thanks Sampath!
That helps
Good good
Thanks Dwayne!
Where do the compressor terminals connect on the current relay?
hi, how may i know the hp of my relay, its marking is 8064 mm5-36s
Ask u a question, what opens the switch internally in the system start relay? The capacitor, the temperature, the resistor or it never opens. I was thinking the resistor
It is normally in the open position. The current generated induces power to the coil turning it into a magnet pulling up the iron core and contacts. Then after the motor current reduces, the amount of power induced into the electrical coil lowers and the iron core falls disconnecting the contacts.
What happens if the relay gets stuck and keeps the start capacitor in the circuit while running?
Can you share the link for the book? Thanks in advance!
www.acservicetech.com/
Thanks Stuart! Yes Brother Tech, sample pages are on the website and can be purchased there, thanks! www.acservicetech.com/the-book
Thanks y'all!
I bought the puller on Amazon really needed.
Sounds Good, thanks Brother Tech!
I think that in small instruments like food processor you don't need the relay at all. The relay is all the time in on position. Those instruments don't have a start capacitor at all only run capacitor to generate the "second' phase to run the motor. It is only a source of potential trouble and you can live without it.
Sir mera v fridge thoda der chal ke band ho ja rha hi
надо было изучать английский
First
Absolutely, thanks Hvac!
Relay linemain poi t runing point line power coil and other in sidd engrgsing main ruing point maing startinv oint othef N ..line givd comon pointed c .comprssor point compelted li lms ..resly frigdusinv resly using
cfyt
Sir plz tell hindi..
Sorry, can you do subtitles?
Great video!
Glad you enjoyed it!