I know this one was long guys, definitely more so than usual. Thanks so much for sticking through and all the support! What did you think of the “documentary/vlog” type style? This is what I love to do!
Me and a few guys at work were waiting for this video to drop! We are like little school girls gossiping about this!!!! Thanks for the great content!!!
I love the 80s style action movie music. Takes me back to my youth when life was so much easier. Good job man. I'm a KY boy myself brother. Hope to run into you at SWH some day. Lol
Thank you brotha....Jim was not pleased that I cast him in B&W. I promise I’m still not subtly painting him as a super villain...totally not doing that. 😁
I always come back to your videos, and understand them more every time. I first discovered this channel in September 2019, when getting into this trade was just an idea. Fast forward to March 2024, I’m a commercial service tech and been working in the trade now for almost 3 and a half years. I have come so far in that short amount of time. I’m intrigued by this video as I’ve been trying to perfect my evacuation technique. When I was newer, I’d pull a vacuum through the manifold through standard 1/4” charging hoses while not removing the valve cores, not really knowing any better. It would take seemingly all day on a little 4 ton split system just to barely reach 700 microns, if that. A few months ago I started researching better ways to pull a vacuum. My current setup, I just hook a 1/2” (or 3/4”? Im not sure, but it’s a pretty fat hose) appion vacuum hose (3/8” on one end and 1/4” on the other) to my vacuum rated core removal tool with the core removed on the system. First time I used this setup, on a 15 ton Carrier RTU, I got it below 400 microns in 15 minutes. I couldn’t believe it. I let it go for a few hours while I did other work to the unit, eventually got it down to about 160 if I remember right. I currently work for a somewhat large and very reputable commercial/industrial company, most of the techs here still pull a vacuum through their manifold. Boggles the mind.
Best video on evacuation I have seen. Mr. Bergmann reminds me of my RHAC teacher I had in high school. The class was called Refrigeration, Heating, Air Conditioning back then. Thanks for video and full write-up
Gotta make sure that standby lube option is selected for that machine. If not that shaft seal will leak over time when leaving her in a deep vacuum like that. Great Job
Who hasn’t had unexpected hiccups in pulling a vacuum. The number of fittings and hoses exponentially increase the potential troubles. I can’t even wrap my head around the number of pounds of refrigerant in this colossal beast.
What a cool video. Your videos have helped rekindle my passion for our trade. Ive been in a stagnate phase for a bit but it's coming back. Lol. Thanks for your awesome content brother. Hope to see you around sometime.
This was a great video. I hadn't considered how the refrigerant could effect the micron gauge and through off your reading like that. When I was a Carrier, we used an industrial pump and a 1.5" hose similar to the bluvac hoses pull a couple of 5000 ton 17DAs down to 50 microns overnight, so about 16 hrs.
Hi! Would you explain why you have to vacuum down 50micron even that big, big unit? And have you maintained the vacuum to check the leak or equalization? Some company recommend 500micron, some 350 for complete dehydration. So I do vacuum down 200micron normally at the exits of service valves. I hope 350micron after equalization by diffusion.
Sometimes when you leave a vacuum pump running overnight, You will sometimes achieve a lower micron reading than the goal. It’s not why did you run the Micron down to 50 microns, Sometimes we achieve less. We except the better reading and carry on.
Helps to have the RIGHT equipment. With out the laptop app you would not know whats going on. I wish people including people who ran HVAC companies saw how complicated and technical some of these jobs can be. Most just think we are all just filter changers and that anyone off the street can do this job. Thanks for the video.
Totally. I’ve had to walk away from 20 ton systems to let them evacuate overnight. It’s hard to be that patient, had I known it was somewhat normal I may have walked away earlier..
I have had to tarp the pump and just let it do it's thing overnight. I agree it is annoying, because these jobs get approved at a certain price. The way I deal with it is to run the pump for a while as I clean up the work area and rope things down, then I change the oil and start it up again. I'll go somewhere else and do a follow up, and come back the next morning ready to drop in the charge.
Words of wisdom there! I love doing this job and seeing so many different things and places! Beats the heck out of sitting in a cubicle. Love your vids AK!
My father taught me when I was 12 (41 years ago) to use a micron gauge and he made up custom soft copper vacuum lines that were 3/8 to half inch in diameter to attach to systems. And my father was taught by an old HVACR guy who is taught and grew up with that same method since he was young. Just like Jim Bergman stated, this is old school technology it was taught in common knowledge back in the days when they actually educated people through proper apprenticeship and schooling.
That pump looks like a Edwards EM series vacuum pump out of the UK. (But with a funny motor on it 😉) I Have used them on many ocations before. And it is the best pumps i have ever found for use in industrial! It would cut the vacuume time from over a week(7-8) to maybe 2-4 days on large freezing plants and distrubution warehouses.
AK- This is one top notch video! 📽Your production was off the chart, 🎬the music under tone was dead on and the drama moments were brought to life with the zooms and pauses! I can't say enough good things about it. AND it was very informative. 👍👍
In my experience, residential/light commercial. Once I get down to 1000-800 microns gauge starts jumping around. I always assumed it was pulling moisture out of oil. Thank you for this video
That's huge brother great video!! Awesome look into science and where we are at with equipment advancements and technology. Great look into our history with Mr. Jim Bergman as well. Was excited to finally see this when Eric mentioned this to me a few months back.
@@AKHVAC Thank you I appreciate that. It's kinda been long over due lol just trying to find the time. In addition the company I work with is a branded company with investors so I have to get permission to film before I can publish them.
Epic video, bro! My only thoughts, that vacuum pump needs a tee handle so you can stand up and wheel around, second that vacuum pump needs a hydraulic lift so you can change the oil and work on it without bending down. That things a beast!
Great video I learn a lot more about the tools that you were using. I am definitely thinking of purchasing a sack of hoses. I do a lot of installation and I will benefit a lot using this kit.
up in Ohio, I spoke to owners of my company two months ago about zoom lock but nothing yet. I will be showing vid to them on big screen at work. THX AK
Unreal to see on such a huge system. i recently just started using this set up (blue vac and hoses on resi units 2 tons average). Usually getting down to under 200microns in 4 minutes, with a finishing vaccum in the 100s under 10 min on new systems. The app and graph is extremely helpful to make sure there is a tight system and helps identify leaks that typically would have gone undetected. Ive used this on coil and condenser replacements and noticed the same thing you did in the video, residual refrigerant will cause that rise. Seeing this on this size of equipment is amazing i dont deal with anything remotely close to this size, but this was awesome great video.
Hello, AK. Timebuilder here. I had to laugh at the end with Jim in black and white. It looks like one of those "real crime" shows where the suspect inadvertently supplies all of the info the detective needs. I had not considered the effect of refrigerant vapor on the micron sensors. That's a nice little nugget. In my market segment, I don't get to work on any large chillers, so it was a nice vicarious experience to see you taking on that work. One of these days, I am going to start one of these channels. I'll let you know when that happens.
I when to school to learn HVAC industrial , I was working for a Big company Fisher price I have a good experience . The problem is when you are 50 pounds Less in the System and you look for the leak and you don’t find it you had to report it a lot of paperwork you had to give details how do you check what do you do and a lot of times they Inspector can take your certification
Hands down this is your best video!!!! I want to work with you!!! I want to work on bigger equipment!!! I am tired of residential service!!! Aaa so cool... this video got me so exited so I can’t sleep... and it’s like 6 am on Sunday....
AK HVAC yes i am going to. Soon. My boss is bringing commercial team from somewhere... said they will be servicing big equipment. He will put me with them to train/work together. I can’t wait.
AK HVAC as of right now i am a residential technician with 10 years of experience... and i freaking got to work on a home warranty calls... so tired of it. Just want to do my job without cutting corners. The way how it should be done.
@@Alex-yk6he The stress level on the commercial level goes up exponentially. More people involved. like project manager, supervisor, property managers, engineers. All wanting the impossible. And the cost of mistakes are greater. Lose a motor or make the wrong dignostics on residential it a hundred dollar mistake and may lose a customer. make a mistake on a large commercial account and its thousands of dollars and lost of a contract. Saw a million dollar contract lost over a 4 dollar belt a tech did not change on a PM. Also saw a large contract lost and a million dollar law suit filed because a tech was told by management to use a off brand oil in a chiller because it was 1500 dollars less than Carrier recommended oil. Be prepared to lose a lot of sleep . There is a big learning curve going from Residential to commercial. Took me over 5 years just to get comfortable around it. I thank you will like it. it's a lot slower pace.
John D thank you for your advice. I am ok with that. Even on a residential compressor change outs (home warranty job) i still do it the right way. Proper vacuum using micron gauge, change all the core valves, charge using SH or SC methods. Replace filter dryer. Sometimes i would check static pressure on a furnace which is unheard of in home warranty repairs.
Drew , there ain't no time limits on quality vids ... Keep up the good work ... I forgot to mention the 90's Strip Club theme music is priceless ... Not that I was ever in one ... Lol ...
Cool video ! That's one Big Sucker there ! it's allways interesting when When i see Pops / a Rise on my vacuum gauge , i'v found it's Just Refrigerant in the Oil Popping out most of the time. That system contains sooo much oil that When it hits a certain point all that refrigerant will start to move out of the oil for a period of time until the oil is dehydrated. That's why j have minimum 12 Hr evacuation time on any compressor changeout i do. it also dehydrates the steel and the around the windings. i've found Huge differences in Pressures, temperatures, sound levels & compressor longevity in a system vs one that is just pulled to under 500 microns and then started up within a hour or so. When me & my dad changed out a 100 ton compressor a while back we Put multiple vacuum pumps all over the system. 2 hooked up to the evap. section. 2 at the compressor. 4 Robinair 6 cfm pumps worked well back in the 80's when we did that job. Awesome editing job ! Great video. what do u use to edit ? adobe ? Take care & well done !
My question is, Why did you guys decide to pull the vaccuum so low when the manufacturing documents for the chiller say to only pull to 5000 Microns? I've been in a scenario simaliar, when I was more of a helper tech and ask the senior mechanic who I was helping and he gave me a response without to much reason as to why(More of "This is the way Im use to doing it, and I know what I'm doing, dont question me attitude") I was repairing a leak on a York 500 ton chiller and I saw that they dont want the technicians to pull to such low vacuum's because it can basically damage the Shaft seal (In Manufacturing Lifterature)between the Compressor and Motor
Cold oil in oil sump refrigerant migrated to coldest spot put 500 watt quartz light on oil sump when you have no power if you have power watch out for standby lube and lube after power is applied you can blow up oil pump in deep vacuum. Keep power off if it is wired and keep light on until it pass’s micron hold test and system is charged then enable stand by lube then oil pump won’t blow up due to being in a deep vacuum. I leave the power tagged out until charged or gassed off on any chiller I’m working on. Some software versions will turn on oil pump after power has been off. This is a self protection line of code on some chillers to turn oil pump on after a power failure. The software doesn’t know a power failure from being powered down. I have not blown up a oil pump but forty years ago I knew it happened to a chiller mechanic so I take precautions so it doesn’t happen when I’m servicing chillers. That pump was impressive but then it hung at 3000 microns and did it twice if they had oil in sump the sump would of been cold. Should have oil in sump because if you add later it will cause your microns to go up. I know it was a test of a high performance vacuum pump that was impressive on how fast it pulled down without blowing oil out discharge at full open on valves test results would been even more impressive if they would came back the next day they would of not seen that 3000 micron blip twice. They would of seen it on the logs but it would been down to 200-500 micron the next morning. That pump looks expensive I will have to stick to my 2-7.5 JB vac pumps and my yellow jacket micron meter. Be carful and safe
Awesome Video, Have you thought about doing something similar for smaller AC kit? With such a small volume you get people who end up doing a vac for 5 minutes and think it's ok as they hit 2 Torr (2K microns). I rarely see anyone doing a hold test either. Since going over to a digital Torr gauge I have noticed you see rises on the hold test that you never notice on an analogue gauge. I wish I had time on my small jobs to also hook up a bottle to increase the volume for the vac, Not sure if this is something you guys in the US do.
Do you have to work for Johnson Controls/York to see equipment this big? Is it normal for contractors to have accounts that big, or is this something only techs who work for manufacturers would see?
the reason they want 5000 microns is because they didn't want to start freezing water vapor in system. they came up with that for slower machines and before we broke vacuum with nitrogen. Sublimation of ice takes longer to remove. That is what carrier manuals say.
Skids like that are always on hand when we set a new machine like that. It was already there from when we leak checked it a few weeks back, used what was left to break the vacuum in the video. That chiller had to come empty because it far exceeds DOT weight limits for the trucks (machine weighs 100,000 pounds empty, plus 7k pounds 134a in charge)
Not being a building engineer or an HVAC tech, I want to ask; if the manufacturer says 5000 is good enough, what happens when you just go by that spec? Does pulling it down to a higher quality vacuum increase the service life of the machine or yield higher efficiency cooling?
Zeke Montgomery up and down from moisture yes, what was unique and interesting was observing the effects of refrigerant specifically and how it trends on a graph. With moisture were used to seeing spikes in pressure as it boils off. What we saw was an artificially LOW micron reading due to the sensor being fooled by refrigerant, then steadily rising pressure as the last of the gas is boiled out and the actual vacuum level became visible.
I'm sure there's tons of places in a system for air, water and refrigerant molecules to hide in and taking the massive size into account, probably 10 fold. think about all the various materials, gasses and molecular sizing, factor in that all material has porosity of varying sizes and you have a "zillion" places for everything to hide, unless pulled down and held for long duration. seems to me it was covered pretty well by middle to high school science, maybe some never payed enough attention though.
I wonder if you pulled the vac fast enough to cause a significant temp drop. Then when you stopped, ambient heat warmed the vessels and caused a pressure rise.
Brandon Blatter we didn’t stop though, that upward curve characteristic occurred while running the pump, with a different profile then you’d see from moisture OR a leak. That’s what was so cool to see. Thanks for watching!
Can someone tell me what exact adhesive I need when replacing the chiller barrel end cap and gaskets on a York air-cooled scroll chiller? Its a YLAA 175ton.
what was the budget for this video , i felt like warner brothers was doing the editing on this video , nice video man thank you for sharing this thats a huge unit kepp up the great videos man awsome .
Nice vid. What voltage is that chiller? 4160 or 480? I saw a new 5000 ton at the carrier Syracuse plant before they shut it down. Strange, most of the chillers were being shipped to The Asia markets.
That was there already, I did not use leak lock or nylog on this job. My guess is when the machine was set in that mechanical room (a few months ago) that someone put some leak lock on the 3/4” caps of the service valves. That place is still an active construction site, can’t say for sure but that’s my bet.
very cool video! I'm probably one of the guys you might consider 'knows enough to be dangerous' but I don't care. If I'm working in a place, I like to know what the things I see are and what they do and why and how. I know how basic refrigeration works and I know the basics of building systems. And when the guy comes to repair my AC at the house I'm renting and he replaces the condenser and doesn't bother pulling a vacuum before charging the system, I get pissed. But hey, at least that wasn't on my bill.
@@AKHVAC ok just a reminder when you have one that is wired in,the pump will come on when you close the main disconnect,while the chiller is in a vacuum,if you do not have it set not to in the settings.
![Lethal Company Music Video 🎵 "Follow The Orders" [VERSION A]](http://i.ytimg.com/vi/QeooZB4Z7RA/mqdefault.jpg)
I know this one was long guys, definitely more so than usual. Thanks so much for sticking through and all the support! What did you think of the “documentary/vlog” type style? This is what I love to do!
The more the merrier. I loved it! Get some tunes in there, some excellent editing, keep it up!
I actually enjoy the longer videos.
Me and a few guys at work were waiting for this video to drop! We are like little school girls gossiping about this!!!! Thanks for the great content!!!
Do more.
I love the 80s style action movie music. Takes me back to my youth when life was so much easier. Good job man.
I'm a KY boy myself brother. Hope to run into you at SWH some day. Lol
I smiled the whole way through this.... you are the man. Wish I could have been there
Thank you brotha....Jim was not pleased that I cast him in B&W. I promise I’m still not subtly painting him as a super villain...totally not doing that. 😁
We need an Avengers of HVAC at this point.
Bergman
Orr
Greaves
I always come back to your videos, and understand them more every time. I first discovered this channel in September 2019, when getting into this trade was just an idea. Fast forward to March 2024, I’m a commercial service tech and been working in the trade now for almost 3 and a half years. I have come so far in that short amount of time.
I’m intrigued by this video as I’ve been trying to perfect my evacuation technique. When I was newer, I’d pull a vacuum through the manifold through standard 1/4” charging hoses while not removing the valve cores, not really knowing any better. It would take seemingly all day on a little 4 ton split system just to barely reach 700 microns, if that. A few months ago I started researching better ways to pull a vacuum. My current setup, I just hook a 1/2” (or 3/4”? Im not sure, but it’s a pretty fat hose) appion vacuum hose (3/8” on one end and 1/4” on the other) to my vacuum rated core removal tool with the core removed on the system. First time I used this setup, on a 15 ton Carrier RTU, I got it below 400 microns in 15 minutes. I couldn’t believe it. I let it go for a few hours while I did other work to the unit, eventually got it down to about 160 if I remember right.
I currently work for a somewhat large and very reputable commercial/industrial company, most of the techs here still pull a vacuum through their manifold. Boggles the mind.
Best video on evacuation I have seen. Mr. Bergmann reminds me of my RHAC teacher I had in high school. The class was called Refrigeration, Heating, Air Conditioning back then. Thanks for video and full write-up
Gotta make sure that standby lube option is selected for that machine. If not that shaft seal will leak over time when leaving her in a deep vacuum like that. Great Job
Who hasn’t had unexpected hiccups in pulling a vacuum. The number of fittings and hoses exponentially increase the potential troubles. I can’t even wrap my head around the number of pounds of refrigerant in this colossal beast.
Dude where are you the community needs you
Saveing this video to my "Recovery" playlist, might get me out of a pinch latter. Neat pump, can't afford it.
What a cool video. Your videos have helped rekindle my passion for our trade. Ive been in a stagnate phase for a bit but it's coming back. Lol. Thanks for your awesome content brother. Hope to see you around sometime.
That was FIRE man ! I wish I had Jim Bergman on speed dial .
This was a great video. I hadn't considered how the refrigerant could effect the micron gauge and through off your reading like that. When I was a Carrier, we used an industrial pump and a 1.5" hose similar to the bluvac hoses pull a couple of 5000 ton 17DAs down to 50 microns overnight, so about 16 hrs.
Hi!
Would you explain why you have to vacuum down 50micron even that big, big unit?
And have you maintained the vacuum to check the leak or equalization?
Some company recommend 500micron, some 350 for complete dehydration.
So I do vacuum down 200micron normally at the exits of service valves. I hope 350micron after equalization by diffusion.
Sometimes when you leave a vacuum pump running overnight, You will sometimes achieve a lower micron reading than the goal. It’s not why did you run the Micron down to 50 microns, Sometimes we achieve less. We except the better reading and carry on.
Helps to have the RIGHT equipment. With out the laptop app you would not know whats going on. I wish people including people who ran HVAC companies saw how complicated and technical some of these jobs can be. Most just think we are all just filter changers and that anyone off the street can do this job. Thanks for the video.
Well said! Thanks for watching John!
Simply amazing everyone that had there hands on this project u guys all did a fantastic job ... Even including that short guy with no name lol.
Thanks Justin! That was my foreman😁
Totally. I’ve had to walk away from 20 ton systems to let them evacuate overnight. It’s hard to be that patient, had I known it was somewhat normal I may have walked away earlier..
I have had to tarp the pump and just let it do it's thing overnight. I agree it is annoying, because these jobs get approved at a certain price. The way I deal with it is to run the pump for a while as I clean up the work area and rope things down, then I change the oil and start it up again. I'll go somewhere else and do a follow up, and come back the next morning ready to drop in the charge.
1 of the bests hvac channels on the RUclips’s! Video was 🔥
Words of wisdom there! I love doing this job and seeing so many different things and places! Beats the heck out of sitting in a cubicle. Love your vids AK!
Wow! Badass performance and awesome video editing. Only AK can make watching a vacuum exciting.
R Lalley 😁😆 thanks man!
My father taught me when I was 12 (41 years ago) to use a micron gauge and he made up custom soft copper vacuum lines that were 3/8 to half inch in diameter to attach to systems. And my father was taught by an old HVACR guy who is taught and grew up with that same method since he was young. Just like Jim Bergman stated, this is old school technology it was taught in common knowledge back in the days when they actually educated people through proper apprenticeship and schooling.
That pump looks like a Edwards EM series vacuum pump out of the UK. (But with a funny motor on it 😉)
I Have used them on many ocations before.
And it is the best pumps i have ever found for use in industrial!
It would cut the vacuume time from over a week(7-8) to maybe 2-4 days on large freezing plants and distrubution warehouses.
AK- This is one top notch video! 📽Your production was off the chart, 🎬the music under tone was dead on and the drama moments were brought to life with the zooms and pauses! I can't say enough good things about it. AND it was very informative. 👍👍
Well thank you sir! It was a lot of fun to put this one together.
@@AKHVAC so did Jim make a special trip down there for you? Another question if you would please ,What editing software are you using?? Adobe?
Yes Jim, Eric of TTT and Rudy came down to take part in this experiment. Great bunch of guys. Yes, I use Premiere Pro CC at this time for editing.
In my experience, residential/light commercial. Once I get down to 1000-800 microns gauge starts jumping around. I always assumed it was pulling moisture out of oil. Thank you for this video
That was worth every minute of watching!
Thanks James!!!🤜🤛
Excellent video bro!!! Love it!! I googled “Large Tonnage” and saw a picture of you next to that chiller and vac pump! Ha! 👍🏼🤙🏽🤜🏼
Enjoyed the interview with Jim Bergmann.
That's huge brother great video!! Awesome look into science and where we are at with equipment advancements and technology. Great look into our history with Mr. Jim Bergman as well. Was excited to finally see this when Eric mentioned this to me a few months back.
Keith Chafin I missed your comment in a chat the other night, that’s awesome stuff man looking forward to seeing how that goes with it!
@@AKHVAC Thank you I appreciate that. It's kinda been long over due lol just trying to find the time. In addition the company I work with is a branded company with investors so I have to get permission to film before I can publish them.
Thanks AK for another kick ass informative video on a new game changing product. Love your channel and what your doing. 👍👍
Much appreciated Christian!
Next level video editing!
Love the rolling cart on that vacuum pump, winch cradle with casters...?
thanks Mike. Haven’t seen ya in a while hope you’re good!
Epic video, bro! My only thoughts, that vacuum pump needs a tee handle so you can stand up and wheel around, second that vacuum pump needs a hydraulic lift so you can change the oil and work on it without bending down. That things a beast!
Great video I learn a lot more about the tools that you were using. I am definitely thinking of purchasing a sack of hoses. I do a lot of installation and I will benefit a lot using this kit.
up in Ohio, I spoke to owners of my company two months ago about zoom lock but nothing yet. I will be showing vid to them on big screen at work. THX AK
Getting caught up on all the videos of guys I’m subbed to. Very cool stuff bro 👍
I swear this is my HVAC PORN. I love it damn I need that pump
Unreal to see on such a huge system. i recently just started using this set up (blue vac and hoses on resi units 2 tons average). Usually getting down to under 200microns in 4 minutes, with a finishing vaccum in the 100s under 10 min on new systems. The app and graph is extremely helpful to make sure there is a tight system and helps identify leaks that typically would have gone undetected. Ive used this on coil and condenser replacements and noticed the same thing you did in the video, residual refrigerant will cause that rise. Seeing this on this size of equipment is amazing i dont deal with anything remotely close to this size, but this was awesome great video.
Hello, AK. Timebuilder here. I had to laugh at the end with Jim in black and white. It looks like one of those "real crime" shows where the suspect inadvertently supplies all of the info the detective needs. I had not considered the effect of refrigerant vapor on the micron sensors. That's a nice little nugget. In my market segment, I don't get to work on any large chillers, so it was a nice vicarious experience to see you taking on that work. One of these days, I am going to start one of these channels. I'll let you know when that happens.
Looking forward to it TB! Thanks for watching and your feedback
@@AKHVAC It's my pleasure. Feel free to PM me on HVAC Talk. I am guessing you are already a Pro member there....
Great video ak! Ending was great!
You got some talent with the editing
Thanks Mike!
Daaaaamn!!
ITS a big Machine !
Form a big crew 😎
I when to school to learn HVAC industrial , I was working for a Big company Fisher price I have a good experience . The problem is when you are 50 pounds Less in the System and you look for the leak and you don’t find it you had to report it a lot of paperwork you had to give details how do you check what do you do and a lot of times they Inspector can take your certification
the gut was right about hoses. we forgot how they work. i had a carrier instructor that used 5 cfm with 1 1/4 custom hoses to pull down chillers
Awesome video and super interesting.
I’m curious where is this place? What type of building is needing such large equipment? Thx
Dude, such a great video and sucking the o-rings/seals out!!!
Hands down this is your best video!!!! I want to work with you!!! I want to work on bigger equipment!!! I am tired of residential service!!! Aaa so cool... this video got me so exited so I can’t sleep... and it’s like 6 am on Sunday....
😆love your enthusiasm, thanks so much for watching Alex! Not hard to make the switch, I’d say go for it.
AK HVAC yes i am going to. Soon. My boss is bringing commercial team from somewhere... said they will be servicing big equipment. He will put me with them to train/work together. I can’t wait.
AK HVAC as of right now i am a residential technician with 10 years of experience... and i freaking got to work on a home warranty calls... so tired of it. Just want to do my job without cutting corners. The way how it should be done.
@@Alex-yk6he The stress level on the commercial level goes up exponentially. More people involved. like project manager, supervisor, property managers, engineers. All wanting the impossible. And the cost of mistakes are greater. Lose a motor or make the wrong dignostics on residential it a hundred dollar mistake and may lose a customer. make a mistake on a large commercial account and its thousands of dollars and lost of a contract. Saw a million dollar contract lost over a 4 dollar belt a tech did not change on a PM. Also saw a large contract lost and a million dollar law suit filed because a tech was told by management to use a off brand oil in a chiller because it was 1500 dollars less than Carrier recommended oil. Be prepared to lose a lot of sleep . There is a big learning curve going from Residential to commercial. Took me over 5 years just to get comfortable around it. I thank you will like it. it's a lot slower pace.
John D thank you for your advice. I am ok with that. Even on a residential compressor change outs (home warranty job) i still do it the right way. Proper vacuum using micron gauge, change all the core valves, charge using SH or SC methods. Replace filter dryer. Sometimes i would check static pressure on a furnace which is unheard of in home warranty repairs.
Love the videos I’m learning hvac as we speak so you help a lot thank you sir
Drew , there ain't no time limits on quality vids ... Keep up the good work ... I forgot to mention the 90's Strip Club theme music is priceless ... Not that I was ever in one ... Lol ...
Thanks man 😆
awesome Video zero is not always zero
2500 ton chiller has its own way to say. I’m big and you can’t get me down.
Cool video ! That's one Big Sucker there !
it's allways interesting when When i see Pops / a Rise on my vacuum gauge , i'v found it's Just Refrigerant in the Oil Popping out most of the time. That system contains sooo much oil that When it hits a certain point all that refrigerant will start to move out of the oil for a period of time until the oil is dehydrated. That's why j have minimum 12 Hr evacuation time on any compressor changeout i do. it also dehydrates the steel and the around the windings. i've found Huge differences in Pressures, temperatures, sound levels & compressor longevity in a system vs one that is just pulled to under 500 microns and then started up within a hour or so. When me & my dad changed out a 100 ton compressor a while back we Put multiple vacuum pumps all over the system. 2 hooked up to the evap. section. 2 at the compressor. 4 Robinair 6 cfm pumps worked well back in the 80's when we did that job. Awesome editing job ! Great video. what do u use to edit ? adobe ? Take care & well done !
OcRefrigeration,Hvac & Electrical. Thanks for all the feedback! Yes, I use Premiere Pro CC for the videos.
This was a great video. It helped me see what can happen in the field.
My pump is a baby compared to yours. One day bro one day!!
My question is, Why did you guys decide to pull the vaccuum so low when the manufacturing documents for the chiller say to only pull to 5000 Microns? I've been in a scenario simaliar, when I was more of a helper tech and ask the senior mechanic who I was helping and he gave me a response without to much reason as to why(More of "This is the way Im use to doing it, and I know what I'm doing, dont question me attitude") I was repairing a leak on a York 500 ton chiller and I saw that they dont want the technicians to pull to such low vacuum's because it can basically damage the Shaft seal (In Manufacturing Lifterature)between the Compressor and Motor
Cold oil in oil sump refrigerant migrated to coldest spot put 500 watt quartz light on oil sump when you have no power if you have power watch out for standby lube and lube after power is applied you can blow up oil pump in deep vacuum. Keep power off if it is wired and keep light on until it pass’s micron hold test and system is charged then enable stand by lube then oil pump won’t blow up due to being in a deep vacuum. I leave the power tagged out until charged or gassed off on any chiller I’m working on. Some software versions will turn on oil pump after power has been off. This is a self protection line of code on some chillers to turn oil pump on after a power failure. The software doesn’t know a power failure from being powered down. I have not blown up a oil pump but forty years ago I knew it happened to a chiller mechanic so I take precautions so it doesn’t happen when I’m servicing chillers. That pump was impressive but then it hung at 3000 microns and did it twice if they had oil in sump the sump would of been cold. Should have oil in sump because if you add later it will cause your microns to go up. I know it was a test of a high performance vacuum pump that was impressive on how fast it pulled down without blowing oil out discharge at full open on valves test results would been even more impressive if they would came back the next day they would of not seen that 3000 micron blip twice. They would of seen it on the logs but it would been down to 200-500 micron the next morning. That pump looks expensive I will have to stick to my 2-7.5 JB vac pumps and my yellow jacket micron meter. Be carful and safe
Awesome Video, Have you thought about doing something similar for smaller AC kit?
With such a small volume you get people who end up doing a vac for 5 minutes and think it's ok as they hit 2 Torr (2K microns). I rarely see anyone doing a hold test either.
Since going over to a digital Torr gauge I have noticed you see rises on the hold test that you never notice on an analogue gauge. I wish I had time on my small jobs to also hook up a bottle to increase the volume for the vac, Not sure if this is something you guys in the US do.
Great video! I really appreciate it !
Excellent video, Still amazing to me what would have taken you guys normally 4 to 6 days to pull down that we did in less than 20ish hours
I enjoyed the video, you’re becoming big time!
This looks like an awesome job site to be on!
Some short guy lol dying
Carlos Dyer 😁😆😆
Carlos Dyer that’s the foremen too
Great video and theTru is a great investment!🤘🤘
Do you have to work for Johnson Controls/York to see equipment this big? Is it normal for contractors to have accounts that big, or is this something only techs who work for manufacturers would see?
That thing would suck the green out of a Mountain Dew bottle!
the reason they want 5000 microns is because they didn't want to start freezing water vapor in system. they came up with that for slower machines and before we broke vacuum with nitrogen. Sublimation of ice takes longer to remove. That is what carrier manuals say.
Very good video!!!
Did you plan to use the nitrogen purge. That's a lot of nitrogen just to have on hand.
Skids like that are always on hand when we set a new machine like that. It was already there from when we leak checked it a few weeks back, used what was left to break the vacuum in the video. That chiller had to come empty because it far exceeds DOT weight limits for the trucks (machine weighs 100,000 pounds empty, plus 7k pounds 134a in charge)
Jim’s the best !
Not being a building engineer or an HVAC tech, I want to ask; if the manufacturer says 5000 is good enough, what happens when you just go by that spec? Does pulling it down to a higher quality vacuum increase the service life of the machine or yield higher efficiency cooling?
Industrial vacuum pump?
What refrigerant does this chiller use?
That was pretty awesome! 👌🏻🤘🏻👍🏻
Thank you Steve!
This is an amazing video
Dude thanks so much! learning alot from you.
What I want to know is why the YKs are a funny color. Sure doesn’t look like Caribbean Blue.
How the hell did they remove the refrigerant and where did they store it in??? Would love to see that recovery unit
How much Nitrogen was used to break the vacuum?? Great video Sir
I would have liked to of scene the charging, and start up of the unit... I come from light commercial, Resi background.
It should always be expected in large systems. The pull down will be up and down for awhile. Leave it alone, give it time and it will pull down.
Zeke Montgomery up and down from moisture yes, what was unique and interesting was observing the effects of refrigerant specifically and how it trends on a graph. With moisture were used to seeing spikes in pressure as it boils off. What we saw was an artificially LOW micron reading due to the sensor being fooled by refrigerant, then steadily rising pressure as the last of the gas is boiled out and the actual vacuum level became visible.
What is the idea behind break the vacuum with nitrogen and pulling it again?
Are those QF25 fittings between the pump and valve to the evaporator barrel?
Great video
I'm sure there's tons of places in a system for air, water and refrigerant molecules to hide in and taking the massive size into account, probably 10 fold.
think about all the various materials, gasses and molecular sizing, factor in that all material has porosity of varying sizes and you have a "zillion" places for everything to hide, unless pulled down and held for long duration.
seems to me it was covered pretty well by middle to high school science, maybe some never payed enough attention though.
They’re not planning on leaving it in a vacuum till spring are they? I would think a positive charge would be better, right?
haha no not at all, we've got another skid of nitrogen on the way.
Amazing work
Thanks brotha!
How many microns are you supposed to bring down on a chiller?
Great job
Great Video Brother
Great Video!!
I wonder if you pulled the vac fast enough to cause a significant temp drop. Then when you stopped, ambient heat warmed the vessels and caused a pressure rise.
Brandon Blatter we didn’t stop though, that upward curve characteristic occurred while running the pump, with a different profile then you’d see from moisture OR a leak. That’s what was so cool to see. Thanks for watching!
@@AKHVAC Oh sure, I misunderstood. That is really interesting.
Can someone tell me what exact adhesive I need when replacing the chiller barrel end cap and gaskets on a York air-cooled scroll chiller? Its a YLAA 175ton.
Killer video
Very good video man !!!!
Thank you Cory🍻
is that a goodman mousepad?
Long but pretty fricken cool
what was the budget for this video , i felt like warner brothers was doing the editing on this video , nice video man thank you for sharing this thats a huge unit kepp up the great videos man awsome .
Haha thanks man definitely low budget, filmed on my iPhone and a go pro. Edited on my computer at the house. Appreciate the words though man!
Nice vid. What voltage is that chiller? 4160 or 480? I saw a new 5000 ton at the carrier Syracuse plant before they shut it down. Strange, most of the chillers were being shipped to The Asia markets.
Lee Johnson these(the Yorks) are medium voltage machines, 4160v
The Tranes in that plant are 480
I must ask about the leaklock we saw on the ground right after you showed the micron gauge, is there a reason this was used vs nylog?
That was there already, I did not use leak lock or nylog on this job. My guess is when the machine was set in that mechanical room (a few months ago) that someone put some leak lock on the 3/4” caps of the service valves. That place is still an active construction site, can’t say for sure but that’s my bet.
very cool video! I'm probably one of the guys you might consider 'knows enough to be dangerous' but I don't care. If I'm working in a place, I like to know what the things I see are and what they do and why and how. I know how basic refrigeration works and I know the basics of building systems. And when the guy comes to repair my AC at the house I'm renting and he replaces the condenser and doesn't bother pulling a vacuum before charging the system, I get pissed. But hey, at least that wasn't on my bill.
Doesnt work very well does it?
@@mark9021 it worked well enough for the duration of my lease.
Sounds like a lamb of god breakdown there.
David Burnett 🤘
Did you use nylog on the connections?
Awesome video....
Thanks
Nathan Rothenberg not a drop
@@AKHVAC is nylog overrated?
Great vid.
Dope
Did you use POE oil?
Great video. Loud music not necessary.
Hopefully someone remembered to disabled the oil pump from coming on in the optiview,the daily oil pump run setting,while it's in a vacuum.
Billy Baraggia there was no electric run to the machine at all. Not even piped up yet
@@AKHVAC ok just a reminder when you have one that is wired in,the pump will come on when you close the main disconnect,while the chiller is in a vacuum,if you do not have it set not to in the settings.
Work for Johnson controls?
Tyler Robertson yes I did at the time
7,000 lbs of 134a?? Holy shit!