you're right about heat restricting caps. It's POE I rarely rarely rarely ever changed a cap with R12 and 502 but since the introduction of POE it's common. If you work on commercial coolers and freezers you know. BOY do you go about the hard expensive way of testing for a restriction. If the unit is in vacuum do not add gas (I use to make that mistake). Turn the unit off and watch how fast the low pressure recovers, pretty much like you watch how fast it dropped with nitrogen. If it takes 5-10 min to stabilize it's restricted and not low. So prior to adding gas check for restriction 1st, by simply turning off the unit and watching the low pressure recover
I just finished some sealed systems training a few hours ago. This video makes so much more sense now that i understand the steps. You are def an amazing instructor
your lectures are really good and helpful. I liked it very much and learned a lot from your lectures. please keep posting your lectures. Also suggest your cameraman to cover all the equipment and items in film when working on it.
Get yourself a knee pad, all that kneeling will add up and your career of mountain climbing Everest when you retire will be hindered. Great videos, explains all systems in great details. Many Thanks
Honestly I seen the video was an hour long and I thought it was going to be a bunch of mumbo jumbo jibberish talk but I listened and watched the whole thing. Great video man. Your a great teacher. I learned some stuff from this and just wanted to say thank you and good job. You rock 🤟I’m in a technical college right now learning hvac.
This is a really good dude all the way presenting some really good and must have information. I'm here because of capillary tubes restrictions and running in a vacuum. You definitely have a lot of energy to present all of that information in 1! One bit of advice even though everything you are saying is music to my ears but for your students so much information at such a fast pace and then at different points random students are throwing out desperate questions I would highly recommend slowing the pace a little bit and focusing on one area at the time and maybe elaborate a little bit more. One last note as a student many years ago in the classroom and in the field one of the very first items that should be taught in my opinion is the magic of the metering device and what it does In layman terms refrigerant goes in at around 100° but comes out the other side around 40 degrees. Someone that is just getting into the field can really grasp that very basic example and then the rest of their education will be smooth
Very very good video. I do service repair. I try to avoid.. working on sealed systems.. lots of Junk compressor today.. But like to save old refrigerator. I have a blocked line.. Capillary is flowing.. but lots of oil. This I saw.. just cutting.. the cap.. at drier. System was at 60 psi. Unplugged not running. I need to figure out if compressor.. Valve.. May be sticking.. I shut off the unit.. and it did not equalize.. Compressor tried to start.. was overloaded.. Ptc tripped 2 times. Then it kicked off.. but pressure went to vacuum.. Can the valves cause this..? I don't believe I have a restriction.. But there is oil in cap tube.. I'm going to flush the tube..? Advice or link.. to testing compressor would be great. These new Inverter compressor, especially LG run.. but have failed to pump.. I call them Junk..
@@tessiehuskey1 If you watch 36:46 I was saying water boils, but Using the comparison of how water can boil then turn from a liquid to vapor/steam. Refrigerant does the same thing in a refrigerant system when it is heated is will turn from a liquid to a vapor/steam.
@@riz65. I'm just realizing it i got a comment from the man himself. You made my day!! ..i watch your videos from start to end. They are a treasure!! Thank you for sharing your knowledge and experience with us. God bless you!
Don't risk your fingers over saving refrigerant! There's internet posts on what can happen. Also if you use gloves make 100% sure there's no holes in it. The holes can trap refrigerant between your skin and gloves and can promote frostbite faster than you realize. In appliances it's pretty much not worth the risk with how much refrigerant these systems take so when in doubt let it out. Accidents aren't punishable by law at least for that amount.
This video is very informative but I have a question. All this work to get the refrigerator running wouldn't it just be easier and less expensive to just replace the fridge?? I was tought you should never work on a factory sealed system. But I enjoyed this video
If you were to be under factory warranty or extended contract you would repair this fridge, but the steps are the same for some of the more expensive refrigerators ranging from $10K to $15K, cheaper to keep her
So the only way to get oil out off capillary tube is blow it out with nighten, if it’s full of oil then the compressor is low or some one put to much oil in system ?? Does the container and capillary tube and filter all have to be replaced ???
Great instructor, thanks for all your videos, sir. I have a couple of questions: 1. Should a little bit of freon be added (to check pressure movement to determine if that is a leak or restriction) with the fridge turned OFF or it can be turned ON to see changes live? 2. If pressure is negative on the low side and we need to find out whether the issue is restriction or leak. Can I turn the fridge OFF IF pressure didn't change, then this is a restriction, and if the pressure started to change, then this is a leak? Would this assumption be correct? 3. Applying Nitrogen on low side to check for the restriction, will it be pushed to both low and high side (through the compressor)? Like if I cut capillary tube on normally working fridge, then apply Nitrogen, will I feel it from both sides of capillary tube or just from low / high side of it? THANK YOU!
1. Yes you can add freon from the low side in vapor form and see if both side of the system respond, while it is running. 2. if it was a leak pressure will rise if it is in a vacuum, how high depends on how much leaked out. At least minimum if a leak and there is no refrigerant left the pressure will return to 0 psi. RESTRICTIONS CAN BE PARTIAL, TOTAL OR FLOATING. So results after turning the refrigerator off vary. through the
@@appliancetraining5600 looks like your message hit a limit of letter numbers or something. Would be interested to know the answer on the 3rd question. Thank you very much
@@user-ed2zb3vu9l if system is not restricted, and you charge with nitrogen, to lets say 100 psi if you cut the capillary tube and pressure should come out of both ends, if restricted may only come out of the cap tube side and not drier filter. The compressor depending on type of compressor and position of the piston sometimes charging through just process stub of the compressor may not push through compressor to the condenser.
Hi guys. My bottom freezer refrigerator is about 8 years old and having the similar problem. I see frost at the joint between the small callipary tube and the evaporator tube. Then It melted, water started dropping. The temperature was between 28-48F. I did reset the fridge by unplugged/plugged. It didn't make any different. I did replace the start relay, capacitor, defrost thermostat, temperature sensor, and electric control board, still does not work. Is it worth to repair my fridge? And how much does it usually cost for vacuum/flush out moisture/oil out of the refrigeration, including replacing the drier filter? Please advise. Thank you.
DId you change the drier filter ? My Maytag does the same, ices over the connection of the capilary tube with the lg tube (covered with C4), and it goes to the 1st loop (about 4 inches). Every fan works, compressor works, but it gets cold only at the connector area. Any ideas ?
@kkaresz78 Sounds like a restriction from moisture. Try taking a spray bottle with hot water and spray that area where the capillary tube enters the evaporator. Spray until the ice is gone and and it begins to thaw. If there is moisture frozen inside there you will hear popping and clicking indicating renewed flow of freon to the evaporator. I currently have this same issue and will probably need to purge the system with nitrogen and replace the dryer filter and recharge the system.
The process tube adaptor kit is used in conjunction with the process tube pinch off tool to seal up hermetic sealed systems, instead of leaving access valves which can leak. All servicing is done thru the process tubes. They can be added to each side of the system or lengthened, do your work, thru the process tubes and pinch them off, remove your process adaptor, and seal the end with a braze, maintaining the sealed system.
I just discovered this product, but why not braze a service valve? If brazed properly, and using a proper cap, it will not leak, a service valve could also give access for future service.
Год назад
@@hobbyless4089 Every time when you connect pressure meter to that process tube you are loosing too much refrigerant. Therefore on systems with less than 200 g of refrigerant, make them sealed!
Год назад
@@riz65 Offcorse you can! 2 pinch off pliers make job safe!
. @NiksaMarkoviczvirka yes you can remove valves, but it's not safe, If you pinch of tool is leaking when you are trying to seal with a torch you have a flame hazard or explosive hazard, So I say this if you remove the valves which is possible, the risk is on you. So If I said its ok and somone does it incorrectly then I would be the one at fault
just one additional point nitrogen is heavier than air and displaces it easily so when working with nitrogen you should do so in a well ventilated area our have exhaust fan running . nitrogen will knock you out so quick you will not know what hit you....and that will be the end . its very deadly .
I did point out was a mistake in another comment . these are live and unscripted, So id not make mistakes once in a while. , but it could be 312 at a different pressure,
Sorry I dont get email notifications of posts from viewers, if you have water in your system that most likely happen due to a low side leak like the evaporator, they run in a vacuum almost when cooling, so a small leak will make the evaporator run below 0 PSI and that would allow moisture/water to get sucked into the system
Ideal suction pressure for a refrigerator running with r134a in the system is 17psi which gives u a 18 degree evaporator temp n 38 box temp. 0 psi reading ur system needs proper troubleshooting.
Residential refrigerators run at 0 PSIG, have to remember these systems are a freezer with a refrigerator compartment. The pressures you are referring to are, if the unit was a stand alone refrigerator with no Freezer. In order to cool the freezer, the evap temperature has to be approximately -15 degrees Fahrenheit.
Yep I realized that after I sent it. I don't work on residential just commercial. But enjoy learning about the residential side n home appliances. Thanks
OMG... hope your students didnt record this... you referred to a filter drier as a drier filter, which is no big deal but never heard it called that, most call it a liquid line filter drier, because the suction line filter is normally only a temporary drier of sorts. also.. you continually call waters boiling point 312F.... when its actually 212F. I was supprised that not one student picked up on that, or questioned you about that. teach the students that if refrigerant liquid spills out, especially in winter, dont be a hero. let it fly. no need to get hurt doing this work. I've found that liquid stage usually turns to vapor after a few seconds anyway....but that liquid is bad frost bite. Your going to find it will be difficult for your students to "UNLEARN" something you've already taught them, and the high pressure from the condenser never leaves the bottom of the cabinet as you were pointing to the upper cabinet. It never leaves the bottom unless the cap tube starts in the upper cabinet. however, your cap tube,(like most), is down below. your teaching of the sponge and body temperature relationship was good. Teaching is no easy task.
I did correct myself when Tech2 pointed it out 9 months ago. This is a live lesson and unscripted as I do make some mistakes. Yes I did say 312' instead of 212'. It is obvious you are an AC tech not only by your screen name, but in your understanding of the system. Refrigerators have a loop called Yoder by some manufacturers and Hot Gas loop by others. This is an extension of the condenser which runs up around the freezer door to reduce exterior moisture from forming around the door gasket of the freezer, so you are incorrect about the high pressure never leaves the bottom of the cabinet. Although the capillary tube is a liquid line that term is rarely used on refrigerators and the Hot gas line does go up and back down to the bottom, look at this link half way down an example and explanation is given. appliancerepaircourses.com/home-appliance-refrigeration-technician-course/hart-course-module-three-sample/
I saw your comment on the LLFD N laughed. I was gonna ask if you caught the 310 boiler spoiler point. Lmao!! 😂😂😂 He needs to take his own advice and perpetuate his metaphor of water to his students. He's water n they're all sponges. just hope they don't leak that bad info. LoL. I'm an engineer and during a class similar, My "Instructor" said to all ... "Propane is lighter than atmosphere" 😂😂😂 Then when I nicely disagreed, He called me an idiot! SMH. Actually asked if I wanted to go outside and handle it. 😂😂😂 I told him.." No Sir. I believe one more wack on that skull will probably make you forget everything!" Then I looked at all the others n said.. He'll apologize tomorrow hopefully. LP GAS SINKS. Remember that. Needless to say I Tested, Pre-grad n never went back to that class. Least two of us are paying attention. lol
I saw your comment on the LLFD N laughed. I was gonna ask if you caught the 310 boiler spoiler point. Lmao!! 😂😂😂 He needs to take his own advice and perpetuate his metaphor of water to his students. He's water n they're all sponges. just hope they don't leak that bad info. LoL. I'm an engineer and during a class similar, My "Instructor" said to all ... "Propane is lighter than atmosphere" 😂😂😂 Then when I nicely disagreed, He called me an idiot! SMH. Actually asked if I wanted to go outside and handle it. 😂😂😂 I told him.." No Sir. I believe one more wack on that skull will probably make you forget everything!" Then I looked at all the others n said.. He'll apologize tomorrow hopefully. LP GAS SINKS. Remember that. Needless to say I Tested, Pre-grad n never went back to that class. Least two of us are paying attention. lol We all make mistakes. The One thing about them is to learn from them. He's actually a pretty good instructor. I'm not hating.. Just laughed at an old memory.
Развлечения
This is fantastic. One quibble - water boils at 212,not 312. Or 100 if you aren't using freedom units.
you're right about heat restricting caps. It's POE I rarely rarely rarely ever changed a cap with R12 and 502 but since the introduction of POE it's common. If you work on commercial coolers and freezers you know. BOY do you go about the hard expensive way of testing for a restriction. If the unit is in vacuum do not add gas (I use to make that mistake). Turn the unit off and watch how fast the low pressure recovers, pretty much like you watch how fast it dropped with nitrogen. If it takes 5-10 min to stabilize it's restricted and not low. So prior to adding gas check for restriction 1st, by simply turning off the unit and watching the low pressure recover
Learned something new today. Thanks guys, Each imput to the class was great.
This channel is a jewel among all referigerant repair related video and for good learning man!!
What a great teacher. I’m thinking about doing this.
I wish I had someone like him to teach me. Will deffenetly watch all your videos!
Very good information bro thanks I could listen to you all the time looking forward for more of these videos
Thank you for great lectures! 👍
I just finished some sealed systems training a few hours ago. This video makes so much more sense now that i understand the steps. You are def an amazing instructor
Thanks
Hey bro hope you’re doing well. Where did you get these trainings??
your lectures are really good and helpful. I liked it very much and learned a lot from your lectures. please keep posting your lectures. Also suggest your cameraman to cover all the equipment and items in film when working on it.
Get yourself a knee pad, all that kneeling will add up and your career of mountain climbing Everest when you retire will be hindered. Great videos, explains all systems in great details.
Many Thanks
Very interesting. Huge amount of knowledge in that video
Very interesting the best instructor ever thank you for your golden instruction I have learned a lot from you than my own instructor.
Honestly I seen the video was an hour long and I thought it was going to be a bunch of mumbo jumbo jibberish talk but I listened and watched the whole thing. Great video man. Your a great teacher. I learned some stuff from this and just wanted to say thank you and good job. You rock 🤟I’m in a technical college right now learning hvac.
Thanks
Excellent teaching, thank you
This is a really good dude all the way presenting some really good and must have information. I'm here because of capillary tubes restrictions and running in a vacuum.
You definitely have a lot of energy to present all of that information in 1! One bit of advice even though everything you are saying is music to my ears but for your students so much information at such a fast pace and then at different points random students are throwing out desperate questions
I would highly recommend slowing the pace a little bit and focusing on one area at the time and maybe elaborate a little bit more.
One last note as a student many years ago in the classroom and in the field one of the very first items that should be taught in my opinion is the magic of the metering device and what it does
In layman terms refrigerant goes in at around 100° but comes out the other side around 40 degrees. Someone that is just getting into the field can really grasp that very basic example and then the rest of their education will be smooth
So professional lecture. Thanks.
Excellent instructor!!!
Amazing Instructor 👏!
amazing training!
Great Video, good job explaining.
This is the kind of instructor I need. Break it all the way down for me, down to the basics, then build me up!
Helluva Teacher…
Thanks
Love your lessons!
Great teaching!! Where do i get the process tube adaptador?
@@ronaldmanley9591 sorry never saw your post, Amazon sells the process tube adapter kit.
Great teacher thank you for that........ when you going to lecture us about the proper way of charging R600A gass
Very very good video. I do service repair. I try to avoid.. working on sealed systems.. lots of Junk compressor today..
But like to save old refrigerator.
I have a blocked line..
Capillary is flowing.. but lots of oil.
This I saw.. just cutting.. the cap.. at drier. System was at 60 psi.
Unplugged not running.
I need to figure out if compressor..
Valve.. May be sticking..
I shut off the unit.. and it did not equalize.. Compressor tried to start.. was overloaded..
Ptc tripped 2 times.
Then it kicked off.. but pressure went to vacuum..
Can the valves cause this..?
I don't believe I have a restriction..
But there is oil in cap tube..
I'm going to flush the tube..?
Advice or link.. to testing compressor would be great.
These new Inverter compressor, especially LG run.. but have failed to pump.. I call them Junk..
Thanks for the Fantastic lesson, How do you call the testing valve kit that you are using in this lesson?
Robinair Process Tube Adapter Kit, I think Amazon sells it
Thanks a lot sir..
Good rundown.
Also, PSIA is absolute, not atmosphere. Makes more sense if you think about it.
A good idea is to fill the compressor with water before regassing to keep it cool while running
At 36:46. Water's boiling point is 212° F, not 312°F Lol. ..Good lesson though
You are correct, Lessons are not scripted and I messed up on that one. Thanks for watching.
This shows you watched almost to the end, LOL
@@riz65
i thought you said that was the boiling point of a type of freon
@@tessiehuskey1 If you watch 36:46 I was saying water boils, but Using the comparison of how water can boil then turn from a liquid to vapor/steam. Refrigerant does the same thing in a refrigerant system when it is heated is will turn from a liquid to a vapor/steam.
Alright. Well noted Mr. Newton, Galileo, or Einstein, whichever one you are.
@@riz65. I'm just realizing it i got a comment from the man himself. You made my day!! ..i watch your videos from start to end. They are a treasure!! Thank you for sharing your knowledge and experience with us. God bless you!
Don't risk your fingers over saving refrigerant! There's internet posts on what can happen. Also if you use gloves make 100% sure there's no holes in it. The holes can trap refrigerant between your skin and gloves and can promote frostbite faster than you realize. In appliances it's pretty much not worth the risk with how much refrigerant these systems take so when in doubt let it out. Accidents aren't punishable by law at least for that amount.
I probably can't make it to your class but would be happy to call and pay you for your help.
Tmm.appliancerepair@gmail.com
Most compressors don't have the access valve any more. The capillaries block because the filters are shit. Sometimes even the oil can block it.
Thanks! 👍
This video is very informative but I have a question. All this work to get the refrigerator running wouldn't it just be easier and less expensive to just replace the fridge?? I was tought you should never work on a factory sealed system. But I enjoyed this video
If you were to be under factory warranty or extended contract you would repair this fridge, but the steps are the same for some of the more expensive refrigerators ranging from $10K to $15K, cheaper to keep her
So the only way to get oil out off capillary tube is blow it out with nighten, if it’s full of oil then the compressor is low or some one put to much oil in system ??
Does the container and capillary tube and filter all have to be replaced ???
If you can post part number for that kit to tap into the lines , thanks
Thanks!
Could you possibly do a video on adding a new Evap and heat exchanger in a bottom mount LG/kenmore elite model??
We will look into it.
This is fire 🔥
Great instructor, thanks for all your videos, sir.
I have a couple of questions:
1. Should a little bit of freon be added (to check pressure movement to determine if that is a leak or restriction) with the fridge turned OFF or it can be turned ON to see changes live?
2. If pressure is negative on the low side and we need to find out whether the issue is restriction or leak. Can I turn the fridge OFF IF pressure didn't change, then this is a restriction, and if the pressure started to change, then this is a leak? Would this assumption be correct?
3. Applying Nitrogen on low side to check for the restriction, will it be pushed to both low and high side (through the compressor)? Like if I cut capillary tube on normally working fridge, then apply Nitrogen, will I feel it from both sides of capillary tube or just from low / high side of it?
THANK YOU!
1. Yes you can add freon from the low side in vapor form and see if both side of the system respond, while it is running.
2. if it was a leak pressure will rise if it is in a vacuum, how high depends on how much leaked out. At least minimum if a leak and there is no refrigerant left the pressure will return to 0 psi. RESTRICTIONS CAN BE PARTIAL, TOTAL OR FLOATING. So results after turning the refrigerator off vary.
through the
@@appliancetraining5600 looks like your
message hit a limit of letter numbers or something. Would be interested to know the answer on the 3rd question. Thank you very much
@@user-ed2zb3vu9l if system is not restricted, and you charge with nitrogen, to lets say 100 psi if you cut the capillary tube and pressure should come out of both ends, if restricted may only come out of the cap tube side and not drier filter. The compressor depending on type of compressor and position of the piston sometimes charging through just process stub of the compressor may not push through compressor to the condenser.
Water boils at 212 14.7psi (atm) or sea level lol
I saw that nice tools adapter kit where I can buy ? Thank you
I also want that tool
@@eric_ad Robinair 12458 - Process Tube Adapter Kit to 1/4 inch MFL
Hi guys. My bottom freezer refrigerator is about 8 years old and having the similar problem. I see frost at the joint between the small callipary tube and the evaporator tube. Then It melted, water started dropping. The temperature was between 28-48F. I did reset the fridge by unplugged/plugged. It didn't make any different. I did replace the start relay, capacitor, defrost thermostat, temperature sensor, and electric control board, still does not work. Is it worth to repair my fridge? And how much does it usually cost for vacuum/flush out moisture/oil out of the refrigeration, including replacing the drier filter? Please advise. Thank you.
DId you change the drier filter ? My Maytag does the same, ices over the connection of the capilary tube with the lg tube (covered with C4), and it goes to the 1st loop (about 4 inches). Every fan works, compressor works, but it gets cold only at the connector area. Any ideas ?
@kkaresz78 Sounds like a restriction from moisture. Try taking a spray bottle with hot water and spray that area where the capillary tube enters the evaporator. Spray until the ice is gone and and it begins to thaw. If there is moisture frozen inside there you will hear popping and clicking indicating renewed flow of freon to the evaporator. I currently have this same issue and will probably need to purge the system with nitrogen and replace the dryer filter and recharge the system.
I wish the school i went got teacher likes him. I graduate 3.0 GPA dont know how to install A/C thermostat
Good 👍👍
The process tube adaptor kit is used in conjunction with the process tube pinch off tool to seal up hermetic sealed systems, instead of leaving access valves which can leak. All servicing is done thru the process tubes. They can be added to each side of the system or lengthened, do your work, thru the process tubes and pinch them off, remove your process adaptor, and seal the end with a braze, maintaining the sealed system.
You're correct, I have been saying that for years. We can't pinchnand seal off 600a units the valves stay on.
I just discovered this product, but why not braze a service valve? If brazed properly, and using a proper cap, it will not leak, a service valve could also give access for future service.
@@hobbyless4089 Every time when you connect pressure meter to that process tube you are loosing too much refrigerant. Therefore on systems with less than 200 g of refrigerant, make them sealed!
@@riz65 Offcorse you can! 2 pinch off pliers make job safe!
. @NiksaMarkoviczvirka yes you can remove valves, but it's not safe, If you pinch of tool is leaking when you are trying to seal with a torch you have a flame hazard or explosive hazard, So I say this if you remove the valves which is possible, the risk is on you. So If I said its ok and somone does it incorrectly then I would be the one at fault
I'm putting fat fat like, thank you so much!
just one additional point nitrogen is heavier than air and displaces it easily so when working with nitrogen you should do so in a well ventilated area our have exhaust fan running . nitrogen will knock you out so quick you will not know what hit you....and that will be the end . its very deadly .
Why the suction pressure should read at 0 psig while running ?
Those are the design pressures on a 134a system. High pressure is 120-130 psi depending on ambient temperature
Today I learned... that "three hundred twelve" is the boiling temperature of water.
I did point out was a mistake in another comment . these are live and unscripted, So id not make mistakes once in a while. , but it could be 312 at a different pressure,
Lg linear low side -10, high side 225 after installing new compressor.
Does the unit equalize... if so how long.. psi?
I removed a freezer compressor and I open the compressor and water is inside no oil what happen with it
Sorry I dont get email notifications of posts from viewers, if you have water in your system that most likely happen due to a low side leak like the evaporator, they run in a vacuum almost when cooling, so a small leak will make the evaporator run below 0 PSI and that would allow moisture/water to get sucked into the system
Born teacher.
Well last I knew water boiled at 212 NOT 312. Good grief!
What's the name of that tool ?
Robinair 12458 - Process Tube Adapter Kit to 1/4 inch MFL
He said process tube adapter.....
310°f water will in fact boil
Ideal suction pressure for a refrigerator running with r134a in the system is 17psi which gives u a 18 degree evaporator temp n 38 box temp. 0 psi reading ur system needs proper troubleshooting.
22 psi for commercial refrigeration units using 134a. Domestic refrigerator with evaporator in freezer 0 to 3 psi..
Residential refrigerators run at 0 PSIG, have to remember these systems are a freezer with a refrigerator compartment. The pressures you are referring to are, if the unit was a stand alone refrigerator with no Freezer.
In order to cool the freezer, the evap temperature has to be approximately -15 degrees Fahrenheit.
Yep I realized that after I sent it. I don't work on residential just commercial. But enjoy learning about the residential side n home appliances. Thanks
If its a million psi the regulator would have a prv and release it lol, just use a regulator end of haha no questions
OMG... hope your students didnt record this... you referred to a filter drier as a drier filter, which is no big deal but never heard it called that, most call it a liquid line filter drier, because the suction line filter is normally only a temporary drier of sorts. also.. you continually call waters boiling point 312F.... when its actually 212F. I was supprised that not one student picked up on that, or questioned you about that. teach the students that if refrigerant liquid spills out, especially in winter, dont be a hero. let it fly. no need to get hurt doing this work. I've found that liquid stage usually turns to vapor after a few seconds anyway....but that liquid is bad frost bite.
Your going to find it will be difficult for your students to "UNLEARN" something you've already taught them, and the high pressure from the condenser never leaves the bottom of the cabinet as you were pointing to the upper cabinet. It never leaves the bottom unless the cap tube starts in the upper cabinet. however, your cap tube,(like most), is down below. your teaching of the sponge and body temperature relationship was good. Teaching is no easy task.
I did correct myself when Tech2 pointed it out 9 months ago. This is a live lesson and unscripted as I do make some mistakes. Yes I did say 312' instead of 212'.
It is obvious you are an AC tech not only by your screen name, but in your understanding of the system. Refrigerators have a loop called Yoder by some manufacturers and Hot Gas loop by others. This is an extension of the condenser which runs up around the freezer door to reduce exterior moisture from forming around the door gasket of the freezer, so you are incorrect about the high pressure never leaves the bottom of the cabinet.
Although the capillary tube is a liquid line that term is rarely used on refrigerators and the Hot gas line does go up and back down to the bottom, look at this link half way down an example and explanation is given.
appliancerepaircourses.com/home-appliance-refrigeration-technician-course/hart-course-module-three-sample/
I saw your comment on the LLFD N laughed. I was gonna ask if you caught the 310 boiler spoiler point. Lmao!! 😂😂😂 He needs to take his own advice and perpetuate his metaphor of water to his students. He's water n they're all sponges. just hope they don't leak that bad info. LoL. I'm an engineer and during a class similar, My "Instructor" said to all ... "Propane is lighter than atmosphere" 😂😂😂 Then when I nicely disagreed, He called me an idiot! SMH. Actually asked if I wanted to go outside and handle it. 😂😂😂 I told him.." No Sir. I believe one more wack on that skull will probably make you forget everything!" Then I looked at all the others n said.. He'll apologize tomorrow hopefully. LP GAS SINKS. Remember that. Needless to say I Tested, Pre-grad n never went back to that class. Least two of us are paying attention. lol
I saw your comment on the LLFD N laughed. I was gonna ask if you caught the 310 boiler spoiler point. Lmao!! 😂😂😂 He needs to take his own advice and perpetuate his metaphor of water to his students. He's water n they're all sponges. just hope they don't leak that bad info. LoL. I'm an engineer and during a class similar, My "Instructor" said to all ... "Propane is lighter than atmosphere" 😂😂😂 Then when I nicely disagreed, He called me an idiot! SMH. Actually asked if I wanted to go outside and handle it. 😂😂😂 I told him.." No Sir. I believe one more wack on that skull will probably make you forget everything!" Then I looked at all the others n said.. He'll apologize tomorrow hopefully. LP GAS SINKS. Remember that. Needless to say I Tested, Pre-grad n never went back to that class. Least two of us are paying attention. lol We all make mistakes. The One thing about them is to learn from them. He's actually a pretty good instructor. I'm not hating.. Just laughed at an old memory.