You not only have talent on the mechanical side but also teaching in informing. Thanks a million! Looking forward to checking out your other videos and learning as much as I can.
I sure enjoyed your presentation, I took a course at a vocational school several years ago and I learned more from your presentation that I did his complete course. All he done was fill up a black board on wall with notes and when we got through copying those he would erearse those and put more notes to copy and kept that up for the entire time. We got to go to the shop two evenings at the end of the course. Thanks so much.
Now I can ask a technician before arriving to my house, what techniques they use to search for a leak. Very helpful and informative, I feel like I can do it myself. But I won't try of course, lol! Thanx! Great video.
lol!!! Oh noooo! Now that's funny. I had to re-read what I wrote (I guess it could sound a lil suspect). Now who would've read into the way you did? Who'd a thunk it?!? lol! It was funny tho.
This was OUTSTANDING! Very clear, easy to understand and basically perfect procedures. Good use of eye protection and gloves! And you were super thorough by checking all the parameters. This was about the best video I've seen on the subject. Thank you very much for contributing this!!!!
He did a great and smooth job of taking the diagnostic from start to finish. He covered all points and conservative methods of adding and measuring refrigerant addition to the system. Well done
Ken, that was great. You were very clear even tho the aircontioning system was running while you provide expertise. I appreciate your time and effort. I learned a lot and will try to put it in practice when I service my unit. I will be viewing all the other videos you have so that I may get a better understanding of how they all work together. Thanks again for all the information. You are giving a great service to many out here. Keep up the great work. I hope I can stay that clean when I start working on these systems.
Great info Ken, Thanks! - Just had home service on heat pump - 4.5 ton. No scale, no baseline established. Leak at Schrader valve discovered by tech putting his finger over the valve. Replaced valve with special tool and he guessed that he added 2 lbs R22. Not real happy with the work. I did get a shot of end pressures and they were 62.6 PSI on Low and 203 PSI on High side from digital gage. Fee was $255 for call with 2 lbs R22. Your comments would be appreciated. Had lots of rain and cooling was weak so called A/C company. Noted the Freon Dryer had been removed on installation so dont have one. Great Video - thanks again.
W Nel sounds like the tech. just wanted to get in and get out. This is how some techs operate and you don’t have much say in the matter. Is your the house nice and cool now?
KenTraining I do not know what the Temperature differentials are but it is keeping up. I am a little concerned that the refrigerant he used to recharge the system may have been reclaimed since it was from a beat up canister (not new like yours in the video) and it could be contaminated and possibly damage the system. It took a long time to finally cool down but now(that humidity is below 99%) seems to be working ok. Thanks for the quick reply Ken . Best regards - Wally
dont do that buddy as a 16 year tech its a good starter video but many mistakes a instructor will see if they are any good. also rule of thumb highside is 30 degrees above ambient for 22
Ken this was a very informative video. I really appreciate you sharing this. Just a few things that would have helped if you had been a little clearer on where you place your amp meter to test the compressor (which I know, compressor/Herm line off of the capacitor) but for visual purposes it would have helped others also with the low side reading being considered low, if you would have told your viewers what a normal reading would usually be (65lbs psig). But all in all, you did a GREAT job brother and again thank you for sharing!!! Stay safe and have a great day!
great video ...i am new to hvac working on getting certification its it's been a real leaning experience but it is nice to have guys like you puting out great videos to help outside of work and class......just wanted to say thanks
I love the check off sheet and writing on the box with a record of how much you added is a great way to confirm with the boss on why you need another bottle.
Thanks. I did this type of work for my own use a long time ago- self taught - interesting to see the right way to do it. I use to fumble around in the dark and stuff usually worked out ok. Thank you and thanks for youtube.
Very good Video. I am in the HVAC industrial and commercial insulation business. It cost a lot less to find a leak than replace a complete system. The average home owner gets screwed so much.
I want to thank you soooo much for educating me in general so that I can be more aware about my unit when hiring contractors. I have an hcav guy who I thought I trusted who has been putting freon in my unit every year for about 3 or 4 years. He has never done a Freon leak check and recntly he said he replace the run cap and charged me only for part because he had missed that problem a week earlier. He charge me $120 but I found out that part cost a lot less.
if your guy didn't have the capacitor on his truck you'd have to order it online wait a week for it to ship. 120$ for a 80/5 capacitor is what hvac companies charge for that kind of repair. Refrigerant leak searches cost money if your system is only low 1 lb a year it's probably not worth finding the leak 40$ for 1 lb of 410a or 300$ leak search then a 2000$ evaporator coil change.
I follow all your videos, you are so experience , professional and safe educator. I thank you for that. keep up your good work and we need your source experiences.
A great video presentation. I would like to suggest three points, 1) Where a HVAC technician can get a check sheet like the one you used. 2) Identify the charging method (Super Heat or Sub cooling). 3) Show and explain the refrigerant connection points for the type of charging method.
Low side pressure is too low....must have bad txv or metering device...partial restriction. Did u have to service again at a later date for failed txv?
Really liked your methodical approach and especially the form for recording benchmark or baseline data prior to making determination of the most likely problem. Be excellent for showing customers (if interested) and good for future service calls on the same unit. I emailed you requesting a copy of the clipboard form if you would please. Also the "A/C Checklist" if that is a different form. Overall one of the more unique videos on refrigeration system troubleshooting starting mainly with system PPs & Ts and using sight glass info and finishing with superheat. It kept me watching the video to see if you eventually did check SH related to charging (for fixed-bore metering devices - presume you use sub-cooling for TXV systems). Thanks for sharing your knowledge and experience.
ty for the video , just recently graduated from tech school. not quite ready for service am currently learning install procedures and some service procedures. this does helpviewing the utube videos, thanks again.
its so funny every thing u say got a point u r so..pro appreciate 10x betam(betam)very much in ethiopian ;) just went to let u know that ur changin ppl life with this videos.tecs r lurning form u. so u should be very proud.z worled need more of u
You are correct Ken the sight glass is full, even though the suction line pressure is below 55 pounds that is a good trade off. I liked your training approach, everything explained no nonsense clean precise, and not over-stated.
Really good video. Hope someone can shed some light on this situation. What would hvac companies prefer to do, Replace a warranty evap coil or repair the leaks? Would these options affect out of pocket expenses for the customer
@@KenTraining Thanks for the quick reply.What would make more profit for the hvac people? I gather that if the evap coil was pulled the tech has to Return the bad part which is under warranty to the manufacturer to receive any form of compensation. Where as just repair, get paid and on the way.
Great vid! I am in the auto repair business so I am familiar with auto hvac systems but would like to be able to repair my residential central air if need be. Your videos are very informative! Thx!
I really enjoyed your video. Reason for watching is that I wanted to learn how to repair my ac home unit. Recently it was serviced and technician stated that the leak was found and repaired. I want on vacation for two weeks and I turned on the air and no cold air came out. I called the owner and he checked the Freon level and found it to be under 25 psi. He charged me 1200 for repairs and no guarantee. I'm out 1200 dollars and ac still defective. More to this but too long. Anyway, I want to get 608 certified and take this guy out of business. I'm retired USN 26 yrs, 30 yrs civil service and started in real estate. I'm basically bitter on this whole deal. I had called three HVAC repairs to come and check mine out but the sob (all) are irresponsible. I want to change that image and also drive them out of business. I have the learning skills and confident that I can get my certification. Juan
I'm with you man, HVAC repair is highway robbery in terms of cost. Here in NY they charge $190-300 per hour labor and $165/lb for R22. You would think they are doing neurosurgery or something at these rates.
I loved this video. When you described the super heat you should have told us where you were measuring the temperature and pressure. Did you do all the pressure and temperature at the condenser to calculate super heat?
nice video very good information very professional it looked like you were in a commercial setting,not like some of these goofballs ie owner operators that come onto a residential situation,butt again very organized before and after readings, using refrigerant scale,and logging all pertinent information a true professional right down to the personal protection equiptment i agree with some other comments maybe this compressor is showing signs of wear,butt if its still running all is good .
Thanks, Ken. Sub cool with temp on suction line for fixed orifice...super heat with temp probe on the liquid line for TXY. Ok. I didn't see that in the EPA 608 tech training course but it had to be somewhere. You'd think it would there.
Good video even me who is just learning could understand it . I have a problem with my army surplus Diesel refrigeration unit (please see video ) its 134a the high pressure is low 150 psi normal range in the manual is 165 to 250 psi . The air temperature outside is 45 deg it has adjustable valve to control the back pressure on the compressor can I just adjust it there ? It has a full charge of 16 lbs of freon . thanks again
Hi ken, your video is very helpful to us. I am very new to this field and I would like to have more experience. I think if you put each call on the video that will be great, cause every job something new to learn from. Thank you any way!
Ken - that was an excellent video! Thank you. I have recently taken a fancy to learn about HVAC and found your descriptions excellent. Towards the end as you were reeling off the numbers it was coming together - but I was waiting for the superheat number.. which was not mentioned.. - But, you did not miss that at all, and and got to it at the summary. If you were to do another video, it would be good to see how you measure temps - especially at the evaporator. The question is access and/or tools. I get them at the vents, but knowing the delta T, would be good, like you quoted. So, how does on do that? Also, my attempts at measuring low side temperature seem to have a lot of noise in the measurement - so how does one do that well? The other day, when I was using sub-cooling for a TXV system - I had little confidence in the high side temperature. I have been doing this with UEI clamp meter with a bi-metalic temp probe. And the tolerance for error on that is lower. So, how does one do that well? Thank you again. ram
Thank you again Mr. Ken, I've experienced difficulty using separate e-mail on which I wrote back to you. This is my short reply: You answered my question and appreciate your professionalism. Robert E. Tewksbury
Great video ... What would be a reasonable charge for this service? My step son just had his unit recharged with 5 lbs for 550$.. It all leaked out a week Later!!
Same thing happened to me, Rinaldi charged $90 per pound And the 25 lb gallon of 410A is $114- that is for 25lbs yet if you get 9 lbs that is almost $900 on top of the extra $100 they charge to use the equipment to find the leak and if it is in the lines and they have to dig that is additional $350 but can be more if a piece needs to be changed/repair
Hi Ken your video was very good, but what I did not see was that you did not check for the super heat and sub cooling with pressure and temperature chart. like the checking amps making sure the compressor is working properly.
Nice video presentation. I would also check the air flow over the evaporator since the low side pressure isn't as high as normally seen. If you find no restriction and air flow is normal and the coil is fully flooded (proper txv or restrictor orifice operation), I suggest that this system isn't properly engineered and the evaporator should have been of a higher btu rating in order to avoid running a "cold coil" and risking coil icing as well as poor efficiency.
why filling r22 in liquid ? i thought only 410a and r32 needs to be filled in liquid because its a mixed refrigerant,while r22 can be charged in vapor form
Hi Ken good video, but about the low side pressure. Aren't we suppose to have around 68psi for R-22 on the low side? Wouldn't 50psi be around 26 degrees? Wouldn't that ice up the evap? Just wondering. I'm still learning,
You are correct; a proper R-22 would range from about 68f to 75f. Mine was very low. I am not sure why it was so low and I was concerned about icing up. But I checked the refrigerant temp coming out of the evap and was around 40f which means the evap will not ice up.
Hi Ken, watched your video quality, thorough stuff. However I would suggest you may want to check for a restriction (not a blockage) on the high side of your system. This may include air in the condenser or dirt in the expansion device or drier etc. This would explain your marginally high head pressure and your low suction pressure. Your air off temp is a little high although sufficient for AC and the system will run in this state (probably trouble free) however with a slightly increased load on the compressor, also check that your compressor does not rely on "sat gas cooling" over the windings, with this low back pressure your compressor won't be getting this and may start to get hot if this is the case. Cheers, From your fellow fridgey
You not only have talent on the mechanical side but also teaching in informing. Thanks a million! Looking forward to checking out your other videos and learning as much as I can.
I sure enjoyed your presentation, I took a course at a vocational school several years ago and I learned more from your presentation that I did his complete course. All he done was fill up a black board on wall with notes and when we got through copying those he would erearse those and put more notes to copy and kept that up for the entire time. We got to go to the shop two evenings at the end of the course. Thanks so much.
Professional,clear, easy to follow - kept it moving. Enjoyed watching.
jerintexas, retired handy man
Now I can ask a technician before arriving to my house, what techniques they use to search for a leak. Very helpful and informative, I feel like I can do it myself. But I won't try of course, lol! Thanx! Great video.
lol!!! Oh noooo! Now that's funny. I had to re-read what I wrote (I guess it could sound a lil suspect). Now who would've read into the way you did? Who'd a thunk it?!? lol! It was funny tho.
This was OUTSTANDING! Very clear, easy to understand and basically perfect procedures. Good use of eye protection and gloves! And you were super thorough by checking all the parameters. This was about the best video I've seen on the subject. Thank you very much for contributing this!!!!
He did a great and smooth job of taking the diagnostic from start to finish. He covered all points and conservative methods of adding and measuring refrigerant addition to the system. Well done
Thanks for taking the time to provide a really thorough demonstration. I'll be looking at more of your videos!
This video has been by far the most professional and informative of any that I have viewed to date. Thank you.
Ken, that was great. You were very clear even tho the aircontioning system was running while you provide expertise. I appreciate your time and effort. I learned a lot and will try to put it in practice when I service my unit. I will be viewing all the other videos you have so that I may get a better understanding of how they all work together. Thanks again for all the information. You are giving a great service to many out here. Keep up the great work. I hope I can stay that clean when I start working on these systems.
Great info Ken, Thanks! - Just had home service on heat pump - 4.5 ton. No scale, no baseline established. Leak at Schrader valve discovered by tech putting his finger over the valve. Replaced valve with special tool and he guessed that he added 2 lbs R22. Not real happy with the work. I did get a shot of end pressures and they were 62.6 PSI on Low and 203 PSI on High side from digital gage. Fee was $255 for call with 2 lbs R22. Your comments would be appreciated. Had lots of rain and cooling was weak so called A/C company. Noted the Freon Dryer had been removed on installation so dont have one. Great Video - thanks again.
W Nel sounds like the tech. just wanted to get in and get out. This is how some techs operate and you don’t have much say in the matter. Is your the house nice and cool now?
KenTraining I do not know what the Temperature differentials are but it is keeping up. I am a little concerned that the refrigerant he used to recharge the system may have been reclaimed since it was from a beat up canister (not new like yours in the video) and it could be contaminated and possibly damage the system. It took a long time to finally cool down but now(that humidity is below 99%) seems to be working ok. Thanks for the quick reply Ken . Best regards - Wally
I have watched a lot of hvac videos and you are the best! JESUS has really blessed you. I hope to be as blessed after I finish my hvac course.
Best video on these subjects I've seen yet. I'm in school for HVAC and I have recommended this video to my instructor to maybe show in class.
dont do that buddy as a 16 year tech its a good starter video but many mistakes a instructor will see if they are any good. also rule of thumb highside is 30 degrees above ambient for 22
Fantastic job. Attention to detail is King. Professionalism at it's best right here folks.
Ken this was a very informative video. I really appreciate you sharing this. Just a few things that would have helped if you had been a little clearer on where you place your amp meter to test the compressor (which I know, compressor/Herm line off of the capacitor) but for visual purposes it would have helped others also with the low side reading being considered low, if you would have told your viewers what a normal reading would usually be (65lbs psig).
But all in all, you did a GREAT job brother and again thank you for sharing!!! Stay safe and have a great day!
great video ...i am new to hvac working on getting certification its it's been a real leaning experience but it is nice to have guys like you puting out great videos to help outside of work and class......just wanted to say thanks
I love the check off sheet and writing on the box with a record of how much you added is a great way to confirm with the boss on why you need another bottle.
True dat! I hate coming behind some jackleg who doesn't want to admit his prior work lol!
Thanks. I did this type of work for my own use a long time ago- self taught - interesting to see the right way to do it. I use to fumble around in the dark and stuff usually worked out ok. Thank you and thanks for youtube.
Thanks for the clear and thorough explanation. Good instructor.
Very good Video. I am in the HVAC industrial and commercial insulation business. It cost a lot less to find a leak than replace a complete system. The average home owner gets screwed so much.
Thank you . Very honest and clear.
Thank you - this video was very helpful to get understanding on the work steps for refrigerant refill.
Thanks Ken for the very good video. 18° temp split is PDG pretty darn good.
I want to thank you soooo much for educating me in general so that I can be more aware about my unit when hiring contractors. I have an hcav guy who I thought I trusted who has been putting freon in my unit every year for about 3 or 4 years. He has never done a Freon leak check and recntly he said he replace the run cap and charged me only for part because he had missed that problem a week earlier. He charge me $120 but I found out that part cost a lot less.
+TLF Fleming DID YOU HAVE A LEAK? IVE HAD MY UNIT FOR 15 YEARS NOW, AND NEVER HAD TO PUT FREON IN
+TOM GUNN Yes, it was leaking. some ac units are great and without leaks and others are not so lucky.
if your guy didn't have the capacitor on his truck you'd have to order it online wait a week for it to ship. 120$ for a 80/5 capacitor is what hvac companies charge for that kind of repair.
Refrigerant leak searches cost money if your system is only low 1 lb a year it's probably not worth finding the leak
40$ for 1 lb of 410a or 300$ leak search then a 2000$ evaporator coil change.
Easy to follow and professionally delivered.
Very professional. Great job.
I follow all your videos, you are so experience , professional and safe educator.
I thank you for that.
keep up your good work and we need your source experiences.
Your clear voice is reaching to surrey B C Canada, and is very helpful in my training. Am trying to be/train an AC Tech. Thank you Ken.
Hi Ken I really liked this video I am fresh out of HVAC school and have been looking for helpful videos and I must say this one is very helpful
A great video presentation. I would like to suggest three points, 1) Where a HVAC technician can get a check sheet like the one you used. 2) Identify the charging method (Super Heat or Sub cooling). 3) Show and explain the refrigerant connection points for the type of charging method.
Very helpful, I am looking into studying refrigeration and all this will help me make a career path decision
I really liked the video very well done and very useful. Thanks a lot.
Very informative.
Low side pressure is too low....must have bad txv or metering device...partial restriction.
Did u have to service again at a later date for failed txv?
Really liked your methodical approach and especially the form for recording benchmark or baseline data prior to making determination of the most likely problem. Be excellent for showing customers (if interested) and good for future service calls on the same unit. I emailed you requesting a copy of the clipboard form if you would please. Also the "A/C Checklist" if that is a different form. Overall one of the more unique videos on refrigeration system troubleshooting starting mainly with system PPs & Ts and using sight glass info and finishing with superheat. It kept me watching the video to see if you eventually did check SH related to charging (for fixed-bore metering devices - presume you use sub-cooling for TXV systems). Thanks for sharing your knowledge and experience.
Thanks for sharing. Very helpful and educational for a novice like me.
Great video. Very in-depth for a beginner learning about heat pump. Thanks!
fernandizo this unit was not a heat pump.
fernandizo The video says right on it... AC Unit.. which = Air Conditioning Unit.
Thank you! I appreciate the clear explanations; it really helps to demystify things.
enjoy watching educational videos. I am a diesel mechanic and noticed the system similarities. Never knew Thanks for the lesson!
Very informative. I appreciate you taking the time to shoot these videos.
Very clear and thorough. The video did a great job of making me feel like I was there watching and learning.
Thank you very much Ken, your video is excellent for new ac tech learning how to use the gage manifold on HVAC.
hi ken thank you for the video....it was very informative and i am learning this trade as i go along to grow.
great job....one of the best....bob
Interesting process. It needs some equipment to accomplish the task. Your video has good detail and step by step instructions.
Thank you , very informative and I very much appreciate the professionalism of your presentation .
Great video!! Covered all the details and made it easy for newbies like me to understand and learn. Thanks!!!
Thanks for the detailed instruction, easy to follow and made sense for each step.
ty for the video , just recently graduated from tech school. not quite ready for service am currently learning install procedures and some service procedures. this does helpviewing the utube videos, thanks again.
its so funny every thing u say got a point
u r so..pro appreciate 10x betam(betam)very much in ethiopian ;)
just went to let u know that ur changin ppl life with this videos.tecs r lurning form u. so u should be very proud.z worled need more of u
very good demonstration and easy to understand
Very good video. Both sons are in HVAC but live a distance away. I'm just learning all I can to determine if I am leaking refrig. Thx
Very useful video, mostly the details on how to use the manifold gauge. Thanks.
Great video Ken. Thanks very much for all the detail and responses. I've learned a ton!
Excellent job. Very interesting. Thank you.
You are correct Ken the sight glass is full, even though the suction line pressure is below 55 pounds that is a good trade off. I liked your training approach, everything explained no nonsense clean precise, and not over-stated.
Great job taking us through this!
Really good video. Hope someone can shed some light on this situation.
What would hvac companies prefer to do, Replace a warranty evap coil or
repair the leaks? Would these options affect out of pocket expenses for the
customer
I think it would depend on the leak/s. If it was one leak or 2 then repair. 3 or more replace.
@@KenTraining Thanks for the quick reply.What would make more profit for the hvac people? I gather that if the evap coil was pulled the tech has to
Return the bad part which is under warranty to the
manufacturer to receive any form of compensation. Where as just repair, get paid and on the way.
Liked this video a lot as it is very informative for myself as a novice. Keep up the good work.
Step by step and clearly explained. Also noticed you drew a little blood so I think everything is normal.
I am a HVAC student . It helped me
its been 2 yrs since this comment, are you an HVAC tech now?? im considering this career..
Better than anybody help me very much!!!! THANKS!
Ken, A great Job! You were thorough to the end! Noel Oakland Oregon
Very good and comprehensive video. Liked it!
Great video. I learned how to check superheat. Thanks.
Great vid! I am in the auto repair business so I am familiar with auto hvac systems but would like to be able to repair my residential central air if need be. Your videos are very informative! Thx!
Excellent video. I learned alot and could follow right along with you.
nice video, first time i've seen someone check compressor amperage while charging. good tip.
Thank you Ken, appreciate your videos, I'm new to the industry and this is very helpful in my training
I really enjoyed your video. Reason for watching is that I wanted to learn how to repair my ac home unit. Recently it was serviced and technician stated that the leak was found and repaired. I want on vacation for two weeks and I turned on the air and no cold air came out. I called the owner and he checked the Freon level and found it to be under 25 psi. He charged me 1200 for repairs and no guarantee. I'm out 1200 dollars and ac still defective. More to this but too long.
Anyway, I want to get 608 certified and take this guy out of business. I'm retired USN 26 yrs, 30 yrs civil service and started in real estate. I'm basically bitter on this whole deal. I had called three HVAC repairs to come and check mine out but the sob (all) are irresponsible. I want to change that image and also drive them out of business. I have the learning skills and confident that I can get my certification.
Juan
I'm with you man, HVAC repair is highway robbery in terms of cost. Here in NY they charge $190-300 per hour labor and $165/lb for R22. You would think they are doing neurosurgery or something at these rates.
I loved this video. When you described the super heat you should have told us where you were measuring the temperature and pressure. Did you do all the pressure and temperature at the condenser to calculate super heat?
nice video very good information very professional it looked like you were in a commercial setting,not like some of these goofballs ie owner operators that come onto a residential situation,butt again very organized before and after readings, using refrigerant scale,and logging all pertinent information a true professional right down to the personal protection equiptment i agree with some other comments maybe this compressor is showing signs of wear,butt if its still running all is good .
Thanks for sharing... very good video. I like the fact the u even offer technical support. Thank u. Good job.👍
Nice pace, clear voice, like details, i.e. check for O rings in HI & LO caps
Thanks, Ken. Sub cool with temp on suction line for fixed orifice...super heat with temp probe on the liquid line for TXY. Ok. I didn't see that in the EPA 608 tech training course but it had to be somewhere. You'd think it would there.
Great video. I feel like I've been to HVAC school and ready to go!
thanks Ken. You are very thorough ! and i learned from your instruction, many thanks !
Good video even me who is just learning could understand it . I have a problem with my army surplus Diesel refrigeration unit (please see video ) its 134a the high pressure is low 150 psi normal range in the manual is 165 to 250 psi . The air temperature outside is 45 deg it has adjustable valve to control the back pressure on the compressor can I just adjust it there ? It has a full charge of 16 lbs of freon . thanks again
Hi ken, your video is very helpful to us. I am very new to this field and I would like to have more experience. I think if you put each call on the video that will be great, cause every job something new to learn from. Thank you any way!
Ken - that was an excellent video! Thank you. I have recently taken a fancy to learn about HVAC and found your descriptions excellent. Towards the end as you were reeling off the numbers it was coming together - but I was waiting for the superheat number.. which was not mentioned.. - But, you did not miss that at all, and and got to it at the summary.
If you were to do another video, it would be good to see how you measure temps - especially at the evaporator. The question is access and/or tools. I get them at the vents, but knowing the delta T, would be good, like you quoted. So, how does on do that?
Also, my attempts at measuring low side temperature seem to have a lot of noise in the measurement - so how does one do that well? The other day, when I was using sub-cooling for a TXV system - I had little confidence in the high side temperature. I have been doing this with UEI clamp meter with a bi-metalic temp probe. And the tolerance for error on that is lower. So, how does one do that well?
Thank you again.
ram
Thank you again Mr. Ken,
I've experienced difficulty using separate e-mail on which I wrote back to you. This is my short reply: You answered my question and appreciate your professionalism.
Robert E. Tewksbury
Very Good Teaching , Thank you Ken, and have a great day.
Great video ... What would be a reasonable charge for this service? My step son just had his unit recharged with 5 lbs for 550$.. It all leaked out a week Later!!
Same thing happened to me, Rinaldi charged $90 per pound And the 25 lb gallon of 410A is $114- that is for 25lbs yet if you get 9 lbs that is almost $900 on top of the extra $100 they charge to use the equipment to find the leak and if it is in the lines and they have to dig that is additional $350 but can be more if a piece needs to be changed/repair
Thank you for an informative, easy to understand tutorial.
Hi Ken your video was very good, but what I did not see was that you did not check for the super heat and sub cooling with pressure and temperature chart.
like the checking amps making sure the compressor is working properly.
very good teacher, thank you for your good faith
Nice video presentation. I would also check the air flow over the evaporator since the low side pressure isn't as high as normally seen. If you find no restriction and air flow is normal and the coil is fully flooded (proper txv or restrictor orifice operation), I suggest that this system isn't properly engineered and the evaporator should have been of a higher btu rating in order to avoid running a "cold coil" and risking coil icing as well as poor efficiency.
Thanks . You should have a right color line .
that r22 hcfc got very expensive now but the new r410a is cheaper but tends to leak out due to the higher running pressures
most thoroughly explained ! Congratulations !
great video glad you explained the superheat method very important
why filling r22 in liquid ? i thought only 410a and r32 needs to be filled in liquid because its a mixed refrigerant,while r22 can be charged in vapor form
+Tonny Cassidy it is safer to charge R-22 as a vapor, I am just trying to speed up the charging time.
R22 doesn't seperate, can be charged either, very slowly if liquid
Tony you absolutely right, if you use throttling method putting R22 as a liquid you still shorting the life span of the compressor.
Thanks. Nice step-by-step video.
Hi Ken good video, but about the low side pressure. Aren't we suppose to have around 68psi for R-22 on the low side? Wouldn't 50psi be around 26 degrees? Wouldn't that ice up the evap? Just wondering. I'm still learning,
You are correct; a proper R-22 would range from about 68f to 75f. Mine was very low. I am not sure why it was so low and I was concerned about icing up. But I checked the refrigerant temp coming out of the evap and was around 40f which means the evap will not ice up.
yes it will seeing as the evap temp is below 32 degrees .it looks like there is a restriction in the system. or lack of air flow across the evap coil
Ken, thanks for getting back to . i did pickup an early edition of modern refrigeration. im looking for the other book that you mentioned.
Hi Ken, watched your video quality, thorough stuff. However I would suggest you may want to check for a restriction (not a blockage) on the high side of your system. This may include air in the condenser or dirt in the expansion device or drier etc. This would explain your marginally high head pressure and your low suction pressure. Your air off temp is a little high although sufficient for AC and the system will run in this state (probably trouble free) however with a slightly increased load on the compressor, also check that your compressor does not rely on "sat gas cooling" over the windings, with this low back pressure your compressor won't be getting this and may start to get hot if this is the case.
Cheers,
From your fellow fridgey
Good suggestions, I will check them out. Ken
this is A.J I watch the video and I like it very much. keep it up!
very helpful information, detailed and specific and simple.. Excellent!!
Excelent Job!! very easy to understand.
Very informative video. Will check out additional resources. Thank you!
beautifully done. Bravo!
Thanks for the education,upload some more.
Many thanks.