Jim, I enjoyed your video. Constructive criticism time: Putting any type of sealant on the "straight" threads of a flare fitting does absolutely nothing. The refrigerant will leak out around the nut where the tube goes through. Use some nylog on the flare face instead.
I noted that with your unusual method of adjusting a TXV reveals that although the temperature of the pressure drop area is measured, it does not seem to be the coldest part of the coil, it actually gets colder to a poit, as it passes through the first few rows of the coil, as evidenced by your measured temperature readings, compared to the TP pressures on the suction side (5F adjustment, compared to the 16F SH on your gauges). your 5F is actually 16F of SH. and of course 16F SH will protect the compressor well. Just an observance.....
Hi nor-cal refridgeration let me know why the jim did not upload any new video from 1 year ,do you know why is he still working or not ? i hop he is well he is doing allways great job god bless him
Driers on backwards. TXV was restricted from the start. Worn out spring means a worn out valve. And the glass was yellow. Lol This is a callback if I ever saw one. And teflon tape on a flare fitting? Whatever.
@@thomaspost5896 Flare and copper fittings don't need anything, not even anti-seize. Drier is on backwards, he should have opened liquid line at txv and check for a clogged strainer. TXVs should not need any SH adjust other than the initial one and if they need to be adjusted it's usually when the powerhead starts to go bad. But yeah, as soon as i saw that teflon tape it's game over....
Hey Jim ! I love you videos. Thanks for going through the trouble of posting them. I am considering buying the fluke 54 but my question is what kind of pipe clams are you using?? And how do you attach to pipes? I am currently using the cooper and the pipe clamps are the best...very small and compact so they fit in tight spaces. But the case is big and not as reliable as the fluke
I randomly came across your channel and it seems like you knew what you were doing so I sub'd....but 4 videos in a row have been you opening up a TXV. Hope I come across some sort of variety soon.
Great video. Should you start to see that -20 evap when the inside of the box gets close to the target temp, or should you be close to a -20 evap even if the box is 20 degrees hotter than its target like in this video?
I don't know if I'm just seeing things...but it seems as though you put the drier on backwards...typical refrigeration units have the receiver king valve as the outlet which flows liquid to the txv. Based on my examination, it seems as though the arrow on the drier is pointed towards that king valve. Please correct me if I'm wrong.
16f superheat on a freezer? Measured where? Ballpark 6-10f evap superheat..usually measured after complete sys stabilization and box at temp. TSSH 20-30F at compressor inlet..never seen adjusting txv to change box temp before..
I was curious, that evaporator fan motor was completely plugged with dirt and dust on the ventilation slots of the air over motor,..... you did clear of all that crap off right????
Holy crap! 72F SC...Don't you think thats a bit overcharged by about 50-60F.... that refrigerant is all backed up(flooding) into the condenser coil.... The mechanics before you were careless... or you have another restriction like an undersized lineset.
were did you install the probes? , i am hearing you say one probe "around" the expansion valve and at the end of the coil , and you only want 1 degree of delta T ? is that means you are looking that there is only one degree of heat gain across the coil??
Its freaking pain in the ass opening those clued fittings. The worst is clued safety valve with a 5/8" fitting in tight place. Nyloc is way to go, clue shit will leak in future.
Jim Pettinato very interesting video? I have enjoyed watching your videos the last six months in this video I watch 4 times! I no you adjusted TXV. By looking at your Gauges? It's telling me you still has Restrictions in the system? High head pressure, high sub cooling, high superheat? ( Recovery, pull a good vacuum and Recharge.
I know right?, I missed the part where he found the pressure drop across the filter, also after he replaced the sightglass, I wonder if vacuum was pulled, sightglass was yellow, system was way overcharged seems like.
Jim I do not know where or who taught you refrigeration but I hope for the industries sake they are not doing it any more. I have watched numerous videos and I do not think I have seen one with so many errors and misunderstandings of refrigeration science as yours. What benefit do you get from measuring the TD across the refrigerant side of the evaporator valves should be set up measuring superheat ie. suction pressure against suction temp.
@volcano hi It is recommended to put something on the threads. Contrary to popular belief flares are not effective by themselves. We use Nylog on the threads. It is certainly not "nonsense". It's just lack of knowledge on your part.
Mr. Jim, there is so many things wrong in this video that I recommend you take it down and redo it. A junior techn searching for quality information will be misled by it.
jim i have a www.commercialkitchensonline.com/products_pictures/counter_fridge_small.jpg r404a psi succt 17 and liquid 240 this cool as hell? is ok the presures
Thank you Joe. Always I've learned allot from your videos. Thank you
Jim, glad to see you back with new video. You inspire and teach more than you realize, and we thank you.
3:39 I don't recommend to use that stuff to seal threads. It can easily clogged the txv is better to used the liquid nilon sealer
I love how you show all the details with explaining.
Jim, I enjoyed your video. Constructive criticism time: Putting any type of sealant on the "straight" threads of a flare fitting does absolutely nothing. The refrigerant will leak out around the nut where the tube goes through. Use some nylog on the flare face instead.
Definite Maybe...the leak lock and the Teflon will enable the nut to be tightened more than it would without lubrication and it will stay tight.
@@corrinefoster1388 it's not a maybe, it's just another piss poor job done by another knucklehead.
I noted that with your unusual method of adjusting a TXV reveals that although the temperature of the pressure drop area is measured, it does not seem to be the coldest part of the coil, it actually gets colder to a poit, as it passes through the first few rows of the coil, as evidenced by your measured temperature readings, compared to the TP pressures on the suction side (5F adjustment, compared to the 16F SH on your gauges). your 5F is actually 16F of SH. and of course 16F SH will protect the compressor well. Just an observance.....
Your videos are awesome! I love how you take the time to explain the details of everything! :-)
jim,i am always love to watch your videos! you are a great mentor for me! i watch every single video that you have posted, glad to see you back!
Nice work Jim. You make it look easy. Nice to see you back.
I’m new to your channel and I already like it. I’ll keep watching all your videos. Thanks for the great information.
Thank you Jim
I am a student in Greenville s.c about to graduate in HV/AC/R. Thank you for all your videos you are really good and I have learned alot
Enjoyed the video. Nice work! So kind of you to make this video to share the knowledge.
Great and very instructive video. Thanks
Jim, Thanks for the education..
No need for Teflon tape. Just torque the flare nut with a torque wrench of the crescent wrench style and that's best
Jim please no teflon tape defeats the purpose of a flare fitting.
Glad to see Mr. Pettinato back on UA-cam. Thought maybe he'd gone down da shore for the summer.
My favorite channel Jim, great videos, nice job as always.
Hi nor-cal refridgeration let me know why the jim did not upload any new video from 1 year ,do you know why is he still working or not ? i hop he is well he is doing allways great job god bless him
Thanks Jim! Thank you for continuing to make videos.
Good job 👌🌹🌹
I think you got it Jim, Nice repair.
Great video Jim thank you from the uk
Hey Jim thanks for the video.
great work sir!
PTFE tape & Leaklok ...sheesh. Never used either & never had a leak, copper being compressed should be more than sufficient
Always look forward to your videos Jim.
Charles
Driers on backwards. TXV was restricted from the start. Worn out spring means a worn out valve. And the glass was yellow. Lol This is a callback if I ever saw one.
And teflon tape on a flare fitting? Whatever.
Gre Gory please list all of the mistakes found.
1. Leaklock and Teflon should not go together.
@@thomaspost5896 Flare and copper fittings don't need anything, not even anti-seize.
Drier is on backwards, he should have opened liquid line at txv and check for a clogged strainer.
TXVs should not need any SH adjust other than the initial one and if they need to be adjusted it's usually when the powerhead starts to go bad.
But yeah, as soon as i saw that teflon tape it's game over....
Excellent video!!!!
Thanks for another great video.
Thanks Jim Pettinato for your video clip help out a lot.
I don’t like thread lock or tape on flare conn? All you need is a dap of oil on flare mating surface
arrow on ll drier points to txv-guess it'll b ok--nice work-brings back memories
.glad to see you back. Nice job
Enjoyed the video. Nice work.
Great video thanks, that looks like Subway coolers.
Yup it's why we have a job. We know one of us came back to put that dryer the correct way...
New everything. Just write that on the unit 😂
Hey Jim ! I love you videos. Thanks for going through the trouble of posting them. I am considering buying the fluke 54 but my question is what kind of pipe clams are you using?? And how do you attach to pipes? I am currently using the cooper and the pipe clamps are the best...very small and compact so they fit in tight spaces. But the case is big and not as reliable as the fluke
Thank you jim.
Why oh why would you use Teflon on a flare fitting????
Great video thanks!
I randomly came across your channel and it seems like you knew what you were doing so I sub'd....but 4 videos in a row have been you opening up a TXV. Hope I come across some sort of variety soon.
great video, thank you
Good video hoping your ok .Jim haven't see you making new video in about year going back on your old video that you made.
I never able to get Fluke brown sensor to sit correctly it so stiff. Now I got UEI with clamp life good again.
Great video. Should you start to see that -20 evap when the inside of the box gets close to the target temp, or should you be close to a -20 evap even if the box is 20 degrees hotter than its target like in this video?
I believe these walk in freezers would usually have a temperature differential (TD) of 10F
jim, 70 degree sc , it is too high for this freezer,do we need recover little refrigerant out ,thank you
I don't know if I'm just seeing things...but it seems as though you put the drier on backwards...typical refrigeration units have the receiver king valve as the outlet which flows liquid to the txv. Based on my examination, it seems as though the arrow on the drier is pointed towards that king valve. Please correct me if I'm wrong.
+Mike Monsalve I just rewatched the video and I think you're right, i'll have to correct that, thanks.
+Jim Pettinato did that change your sc? thanks
+Jim Pettinato even pros make mistakes haha. no big deal
Jim B that is why I fuck with you Jim, not perfect and never claimed to be
Jim, they say you should put on as fast as possible so do you agree?
Nice video, good to see you
Nice job Jim
16f superheat on a freezer?
Measured where? Ballpark 6-10f evap superheat..usually measured after complete sys stabilization and box at temp. TSSH 20-30F at compressor inlet..never seen adjusting txv to change box temp before..
Jim, I am curious since you already had the system opened up, is it possible you should have checked the screen on the TXV as well?
Didn’t have an inlet screen if you look closely
Only issue I have with videos hard to hear what you are saying. Otherwise great
Excellent Trouble Shooting. 7/19/2021
I was curious, that evaporator fan motor was completely plugged with dirt and dust on the ventilation slots of the air over motor,..... you did clear of all that crap off right????
Thanks Jim
Holy crap! 72F SC...Don't you think thats a bit overcharged by about 50-60F.... that refrigerant is all backed up(flooding) into the condenser coil.... The mechanics before you were careless... or you have another restriction like an undersized lineset.
Did you just not show it or no pulling a vacuum to get the air and moister out after opening the system?
Hi Jim hope you're doing well
Wish could hear him better
were did you install the probes? , i am hearing you say one probe "around" the expansion valve and at the end of the coil , and you only want 1 degree of delta T ? is that means you are looking that there is only one degree of heat gain across the coil??
yes
Nylog those flare fittings. 10x better than the blue stuff.
Its freaking pain in the ass opening those clued fittings. The worst is clued safety valve with a 5/8" fitting in tight place. Nyloc is way to go, clue shit will leak in future.
We're did you have your temp probes hooked up to?
Jim Pettinato very interesting video? I have enjoyed watching your videos the last six months in this video I watch 4 times! I no you adjusted TXV. By looking at your Gauges? It's telling me you still has Restrictions in the system? High head pressure, high sub cooling, high superheat? ( Recovery, pull a good vacuum and Recharge.
+CLARENCE C.B. MARTIN JR. ua-cam.com/video/L5mcKIUL6z0/v-deo.html
Whoa! seventy something degrees subcooling? Whats up with that? Do ya think this might be way over charged?
+hvac01453 I did have to make a small adjustment on that, thanks
What in the god damm hell are you doing putting teflon tape on a flare connection for?
High supper heat and high Subcooling
I know right?, I missed the part where he found the pressure drop across the filter, also after he replaced the sightglass, I wonder if vacuum was pulled, sightglass was yellow, system was way overcharged seems like.
Jim I do not know where or who taught you refrigeration but I hope for the industries sake they are not doing it any more. I have watched numerous videos and I do not think I have seen one with so many errors and misunderstandings of refrigeration science as yours. What benefit do you get from measuring the TD across the refrigerant side of the evaporator valves should be set up measuring superheat ie. suction pressure against suction temp.
You Teflon tape flare joints?
@volcano hi It is recommended to put something on the threads. Contrary to popular belief flares are not effective by themselves. We use Nylog on the threads. It is certainly not "nonsense". It's just lack of knowledge on your part.
hey jim after installing filter drier? how long after you should change it.
You should have cleaned the TXV bulb
What kind of hack r you Teflon tape on threads?.....?The seal is in the flare ....u be back
You sure it wasn't restricted
72 degree subcool, seems too high!
Jim,
What is the type of this teflon tape ?
It's a simple teflon tape or is there someone special ?
Thank You.
called Blue Monster
Jim Pettinato,
Thank you.
The tape is 4 tapers threads not flars ,,,,,,,,
Is 72° sub cool normal on refrigeration?
Has Jim retired?
would you say about a 3+ hour job
Is required sub cooling should be 10
good video let me go work for u.
Mr. Jim, there is so many things wrong in this video that I recommend you take it down and redo it. A junior techn searching for quality information will be misled by it.
jim i have a www.commercialkitchensonline.com/products_pictures/counter_fridge_small.jpg
r404a psi succt 17 and liquid 240 this cool as hell? is ok the presures
Hi how are you? What paste and teflon did you use?
Thanks
great video, thank you