R290 COOLER NOT WORKING

[@VC-Toronto]

Whatever location it was from, they sure kept their equipment nice and clean, much better than some restaurants I've seen on this channel.

[@TheDrew2022]

Sensitive location made me think DOD or Military. He's CIA I tell ya. CIA! :-P

[@MFCSTUDIOS]

I say government location as well. Most likely military installation or base of some kind

[@matthewcoll9845]

I wondered if it was a correctional facility. Yes much cleaner than a traditional restaurant.

[@theronerd]

I'm going with a prison or jail.

[@0xFF48]

@@theronerd I doubt it, a jail or prison wouldn't be a sensitive location. They'd just schedule him to work on it outside of food service. More then likely this came from the cafeteria of a military, intelligence or a classified section of a defense company.

[@jimbo2150]

27:56 - "Pinch it off when you're done." Words to live by 🤣

[@misterhat5823]

Less messy that way.

[@utahman8465]

Chris, I didn't know if you knew that R-290 is considered to be a Chemical Oil Solvent (C.O.S.). It can mix with the oil in the compressor and help with oil return in ultra low refrigeration systems.This would be systems cooling below -40 degrees Celsius. The R-290 is introduced into the system when first charging the system from a vacuum, almost always by pressure. After the R-290 pressures stabilize, the refrigerant is added, also by pressure as per manufactures specifications. A majority of medical scientific researchers use freezers the are cascade systems or mixed refrigerant auto cascade systems that will cool from -86 Celsius to -150 Celsius. These were fun to work on when everything went right, and a P.I.T.A. when things went south. Thanks for the videos! Nice to see your level of professionalism and dedication to the trade.

[@samsimington5563]

1:40 The leak check hasn't even started yet and the detector is already freaking out with a solid BEEEEEP!

[@SimmanGodz]

Even the CIA needs a cafeteria, afterall.

[@compactc9]

I will say, whoever runs this sensitive location sees to it that this thing is kept clean. WAY cleaner than most of the restaurant ones I see.

[@grahamodonahoe7104]

Maybe the cleanest reach in I've ever seen and you didn't have to repair it as they are trying to work out of it.

[@MoraFermi]

Amusingly, the best way to "recover" R290 would be to braze something with it.

[@Klokopf52]

Brazing with propane might not be the smartest thing to do. But it is possible for sure :)

[@ka-i]

I’m guessing that’s because it’s not as hot as oxy acetylene?

[@JjMn1000]

Haha

[@microlach6632]

@@Klokopf52 my plumber brazed with propane

[@sherwinalvarez7365]

Ramble on brother I'll be listening.

[@greendryerlint]

Good to see conscientious and meticulous work. I wish everyone had the same work ethic. I'm sure your customers appreciate it.

[@tbelding]

Just as a suggestion, look for a good set of goatskin gloves. They're usually sold for gardening, often in the women's glove section. They're not so good for heavy punctures, but they give you some wear resistance, as well as insulation against heat (or cold). The good ones are tight, and that's good and bad. It's good because you get really good dexterity and grip. It's bad because it takes a bit to get them on and off. I agree with you on hating the normal heavy gloves used for welding. (I don't believe they making brazing gloves. Just welding) You can also buy mechanics gloves with leather palms and fingers. That gives you the protection from the heat, with some flexibility. You just aren't that protected with synthetics, because they melt. Even cotton gloves are better than the standard mechanics gloves. Thanks for the videos!

[@wiiyaasiniini5323]

I have a sweet little 1/4in ratchet that I keep in my pocket that I bought at Walmart for 10$ similar to your little tool you used to undo the pipe clamp. It's like 4in long and takes drill chucks on the backside. I also carry 1/4-1/2 magnetic nut-drivers in that same pocket. It's saved me having to go get tools COUNTLESS times. I've gotten used to just having tools on me that I kind of feel naked without them.

[@ForeverTechHindi]

Sir You are doing great job to teach others I am used to watch your videos but in this video 10:40 you where disassembling the filter and Noticed that your Torch Fire was Touching the compressor and capacitor Which can damage the capacitor so for that I suggest if you use cotton wet cloth in front of your torch flame to not directly damage the capacitor or compressor from heat , it will be a good practice

[@Catayst-123]

Great Video I'm new to Your Channel. Alot has change in Hvacr In 20years since I did that kind of work.R290 is new To me.Take Care/Godspeed! P.S Stay Away from the Fumes from Soldering They will make You Sick years from now (Use a Fan)😊

[@look3467]

Great job in trouble shooting and repairs. The warnings on r290 was and important point.

[@BenTh17]

I’ve had decent results patching leaks on those stainless Danfoss valves with 45% silver, but you’re right, if you overheat the valve at all you’re pretty much boned and it doesn’t take much to do so. Good video as always!

[@borissibor2638]

I like watching small and simple jobs like this. They have very straightforward troubleshooting without much confusion. The bigger units in other videos have all that electronic gadgetry that gets very confusing to understand.

[@persimonsen8792]

Smaller units can be equally difficult to work on. Because you don't have that many options. But usually easy stuff.

[@antoniofabro3759]

Nice showing the procedures on working with r-290 love these videos ! Have to be well equipped to thanks 👍

[@cr76802]

I was watching your soldering skills on txv. Your applying heat more to the copper line set letting it transfer to tvx. Well done I have a old school welder teach me that trick when I use to be one.

[@kellysmith7357]

I really enjoy your videos, I always love learning about new trades from people that take pride in what they do. Actually I never considered getting into HVAC even though when I was a welder people kept telling me to do that instead lol. Now though I wish I wouldve, it seems like its actually pretty fun.

[@jassvirk4228]

New techs, Make sure not take cigarette break near unit while letting 290 out lol

[@DocNo27]

My grandfather was in a nursing home - my mom got on him for smoking outside while on oxygen. He was indignant because he'd only had a "couple" of flame ups! Sigh. The very young and the very old. We will all probably be back there if we live long enough.

[@Mr_Daddy1980]

Nah its not that dangerous....

[@cshin58]

Great video, I’m tackling one today and following your strategy. Thanks

[@cjmorris6831]

Nice video I think some of our guys should watch this video! Some of our techs have been struggling on the R-290 calls!

[@josephsimien2609]

Great video. The most important skill is patience of the technician. Is so, then all other necessary skills will become more natural. Great job!

[@tomasjosefvela1]

Good video as usual, very informative and very cool to leave in mistakes because like you said "no one is perfect"

[@DaltonColbyMerritt]

Our trustees at the state corrections institution appreciate you repairing the cooler! O😉

[@fredmax2541]

I like the fact that you verify your work.

[@zacke1434]

Love the new shirt design especially the flag on the arm!! Can't wait to order one!

[@markcaldwell1245]

Nice job. Probably a good thing you were able to take it off site had it been in place that triple leak check might not have happened.

[@carloshilarionvazquezaranda]

Excelente trabajo Chris, y estupenda explicación gracias por todo tú tiempo y enseñanzas. Saludos desde Coacalco Edo de México.

[@life_behind_bars]

I'm with you on leaving the service ports on if it's a customer I do all the service for. It will save my customer time and money the next time I have to work on that piece of equipment. Great video👍

[@Tjita1]

Talking about sweeping the system, when I trained to be an aircraft tech they talked about what you have to do to do "hot work" on fuel tanks. They purge/sweep the tanks with high temperature steam, and I think for an absolute minimum of 24 hours. Of course kerosene is a lot less volatile than propane, but still, it's not that surprising to me that you sometimes get flames after such a short purge with nitrogen.

[@HVACRVIDEOS]

I will discuss this on KZbin this evening 11/2/20 @ 5:PM (pacific) on my livestream, come check it out. kzbin.info/www/bejne/iXicl5Kja5mVqpY

[@tracysellman1562]

Chris good job, on the end of the pipes I always pinched off the end of the tube and smashed it flat bent it over on itself smashed it flat again, and then brazed it shut, just my OCD thing. lol I used to work on University lab equipment and did a system that used R-602B exotic gas it came in a small really thick bottle with 1/2" steal, the return core fee was $2,000.00 and it held 8lbs of gas/liquid which was $4,000.00 itself. This was warranty work for the factory of the test chamber they flew out an engineer to oversee the work, I asked him what the weigh-in weight was supposed to be and he said they didn't go by weight just 185 PSI static pershers I was like really? he said yes. A loose screw had rubbed a hole in one of the lines, and all the gas had leaked out shortly after delivery on the $200K test chamber, a socket wrench and Lock Tight fixed it along with two small brazes. We made $25K for two hours of work and the factory reimbursed us the full price of $6K for the gas and bottle they had us store it at our shop for further use. My boss the owner of the company was Hell Yes. Easy money! lol

[@sparc5]

All I can say is bravo. That was a really challenging one and you solved it crazy fast.

[@lkneepkens53]

Your a true craftsman. Thanks for sharing

[@jefferygrady3181]

I can't wear gloves when I am brazing either it's cumbersome like using the oxygen acetylene torch you lose control! How come you didn't use a process tool with the ball on it like they do at the factory ? It works much better than vice grips to pinch the line shut! I repaired thousands of window shakers under warranty in the winter in our shop and found that out very fast! Great video and good job!

[@ballpythons]

I have used those pinch off tools in the past. But have changed to using the yellow jacket pinch off tool. Once I pinch I keep my probe on then loosen the probe to depressurize, then tight probe back up and look for increase in pressure to make sure it’s not leaking. If it does I tighten the block up and retest. In the video once you pinched then started your torch to check for leak by, that was almost 20 seconds. That could have threw off your critical charge if is was leaking by. Not being mean just giving you my view/ opinion.

[@jasonjohnsonHVAC]

If i remember correctly. 290 systems can only have a certain amount of refrigerant allowed. Thats why the bottles are like 6 or 9oz

[@AnUnapologeticApologist]

That's the case for any critically charged system

[@beardowns8050]

Yea no more that 5.2oz per circuit

[@Uncle-Duncan-Shack]

Hi Chris, That expansion valve being stainless steel the heat from the braze joint takes forever to travel, different to brass bodies where the heat flows fast. I agree that being prepared and working efficiently does not put the valve at risk. Good job on the post completion checks, so important. Btw, the show was awesome. I missed it as I had to get up early and go to the SA border with Botswana for a failed vsd on a floating pump station on the Limpopo river. It sends water to veggie crops on land, very cool. Best regards, Duncan, South Africa

[@s0me1usaw]

wow he is hardworking online and on site, reading every comment

[@HVACRVIDEOS]

I try but i miss some of the comments....

[@AnUnapologeticApologist]

I know the exact problem you mean with those TXVs (I believe they're danfoss). I just solder those valves in with stay brite 8 it so much faster and easier

[@neilvestervictor180]

great job Chris a true profession

[@jefferygrady3181]

I had forgotten to joke with you about an inside HVAC guy thing that technicians see on other people's soldering jobs ! That big glob of solder on the bottom of the joint! The slang term is dog nut! I saw that on the joint on the txv! LoL!!

[@jonathandetrow1077]

So that's what happens when you first start those sensors up, the minute or so where the tool is zeroing its readings. Sensitive could also mean the owners don't want others to see their equipment getting service because that's how some people are. Also I take it the safety reasons is because it might explode or catch on fire? Less of either the better.

[@andrewedis9907]

Thanks for explaining why you removed the service fittings.

[@fer8888888]

How dare you bleed out R290, think about all the fish that could have been grilled for the penguins with it.

[@Rusty_Gold85]

17:30 Any reason why you can't add a small piece each end before fitting , get your tolerances ( right- above / outside/ up where you have good space ) .? Then solder in the copper females ( under /upside down /cramped ) copper to copper , on both ends ?

[@mrbyamile6973]

I've done that on heat pump reversing valves when possible also.

[@tetrambs]

I wonder if you could put something like foam core (or some kind of insulator) between the sensor and the evaporator to get a more accurate temperature of the bottom cabinet.

[@vili7545]

Great videos, greetings from Finland.

[@moeselec]

Good Job . Very informative , Thank you for the service fittings tip.

[@fritzjean-baptiste5935]

Great Technician Great video Your explanation was perfect

[@brianmcdermott1718]

Super great video with R 290. Thanks Chris.

[@Ted_E_Bear]

Watching from Myrtle Beach SC !

[@dmiestercommkitchentech3043]

I used to work for Whaleys Food Service in Myrtle Beach SC before Heritage tried moving in

[@ivancamacho7670]

Can I come work for you? Need that Knowledge, it's the way you explain whhhyy you do it. Have a great day Chris!

[@sjefoekel6058]

He got a way with it, with his eyebrows still intact! ☺

[@natepeterson7145]

Thanks again Stefanovich!

[@xelaju8]

Nice video. Thanks for sharing.

[@pennsylvaniahvacproduction6658]

that evaporator coil is in good condition Besides the leak

[@juniormint3136]

Eh, just top it off with a lil propane. Keeps ya in business during slow times.

[@Leon5495]

...whoa, wtf.. there was a leak after you took off fittings, but when you brazed, nothing caught fire... that's insane..

[@DennisYounker-sf5wb]

Wait a small 290 leak didn't decimate the entire building?

[@davida1hiwaaynet]

Those very small charges can be frustrating. It's hard to explain to some people that connecting gauges can remove a fatal amount of the charge. While my profession is centered around power generation more than HVAC/R, I certainly understand the "Sensitive" nature of some locations. I've had some very interesting repairs which I couldn't even talk about. Life can be interesting working in the industry but some things are frustrating. :)

[@driftless1870]

UNBELIEVABLE. Hope too many people don't follow this for correct procedures and practices. What you call "choices" are NOT really choices. They are developed shortcuts from repeated bad habits. But it does set great examples of things to avoid. Thank you.

[@falloutguy8878]

Nice job Chris? Loving my new beanie fits well? Keep safe bro

[@randomrazr]

What brand do u recomend for commercial coolers that are reliable and cheap to fix down the road? True, traulsen ? etc

[@dmiestercommkitchentech3043]

At 16:30 you said you would have to use flux but with stainless you can't use flux the acid in it will corrode the valve

[@alimuh007]

Great video

[@FerrybigGaming]

21:04 The scale was not calming own as your container for the cylinder was resting against the cooler. As you pressed buttons, the metal flexed a tiny bit, which was then reflected by the scale as changes in weight

[@werta5000]

we got people around here that convert 134A to 290 in vehicles. I am told it cools better but haven't done it myself. I don't feel that you need to put more flammable things inside the engine bay and cabin of a passenger vehicle

[@GGigabiteM]

Government regulations pushed for R1234yf to replace R134a, which is lethally toxic. R1234yf decomposes into carbonyl fluoride and hydrogen fluoride when exposed to the atmosphere. Both chemicals are on the "get the fuck out as fast as possible when a leak happens" because just a small whiff of either can cause death or debilitating health issues. Fluorine is the gift that keeps on giving, you can find plenty of videos on why chemists hate working with it. I'd rather have another flammable gas than liquid and gas death flowing around my vehicle. German car companies did R1234yf testing when it was introduced and were horrified that in crash testing it *etched into the windshield* This happened because both of its products of decomposition (HF and carbonyl fluoride) eat glass, as well as many other things, like human bone. It's also interesting that Dupont Chemical is the company behind R1234yf, as well as R134a and R12. And that there is always a big public scandal about how each previous refrigerant is bad for the environment right when the refrigerant is about to have its patent expire and become widely and cheaply available. It's also interesting how Dupont has a revolving door relationship with the EPA, where executives shuffle in and out of both doors. It couldn't possibly be a conspiracy where they regulate themselves and create artificial barriers to keep themselves the only show in town. R134a is currently around $100 for a 30 pound cylinder. R1234yf is about $3000 for the same 30 pound cylinder.

[@etherealrose2139]

Not sure why. R134a runs at about 16PSI less for the same temperature. I think it's a wash to totally change out components for a refrigerant that's about the same. You shouldn't need to be filling it so availability shouldn't factor in.

[@werta5000]

@@GGigabiteM I worked previously at a GM dealer, 1234YF was like $1000 for a 10lb bottle, most passenger vehicles only use 1lb, some of the dual evaporator systems used the massive amount of 2.2lb

[@damonjenkins2185]

Not about the engine bay, it’s about the evaporator making it even worse. I would like to see what happens if you let off a spark in a car with 400 grams of propane in the cabin

[@damonjenkins2185]

@@GGigabiteM I thought Frigidaire came up with r12 not DuPont

[@larsen007]

We set the evap fan to always run, even when the compressor stops. But i live in Norway so thats our standard.

[@sjefoekel6058]

I believe this one does it also, exept it stops ont a delay to prevent warming up the box, when cooling demand is present, it first turns on evap fans if there is a temperare decrease beacuase of melting ice on the evap the comp will stay off, otherwise it will come on.

[@instrumenttech4220]

Good one bud gloves are a pain for sure

[@lewerinteknik2034]

Love the R290 videos, such an adrenaline rush

[@mechanicalhvacr]

Excellent sir

[@ejonesss]

you may want to consider blurring out the serial numbers because it is possible to identify the customer and location by the serial number. many commercial refrigeration companies like true has a serial number lookup system and it is possible that the customer registration data is revealed in the serial number lookup. if you are not able to blur out the serial number then check on the manufacturer's website to make sure that they dont show the customer first and if they do then make sure not to film the data plate or you can put a piece of electrical tape over the serial number.

[@thecoolguy23]

Nice video!! Little question i saw that you didn't put wet rags or something to protect the txv you don't have to do it on that style of txv?🤔

[@georgeolmo7710]

Morning Chris. George from orlando..according to danfoss, those txvs have a material similar to stainless but it's not stainless.you are correct in that it does have a copper core...keep up those videos...HVACR VIDEOS ROCK ON!

[@PantsManUK]

"Sensitive": Hmm, guessing Government or Military in that case. Least said...

[@k2u364]

Or a billionaire kitchen

[@Gpbattersby]

Top secret food preparation

[@lsm13b66]

prison maybe

[@Anne_Frank00]

He is in California so I'd say Nancy Pelosi's chocolate icecream cooler.

[@Eddy63]

@@Anne_Frank00 You said exactly what I was going to comment ... Lol ,,,

[@kojsiusoaliu6772]

I always keep a used barelyempty can of camping gaz to recover butane/propane . Then I use it to cook or heat my tea on the jobsite.

[@haydenuk02]

Quality work as always and keep up the hard work and thanks for the content stay safe and take care

[@HVACRSurvival]

I watched the whole thing, with no ads because I spend 12 bucks for KZbin premium to not see them 🤣. 🌟🌟🌟🌟Great coverage of how to properly repair the system 👍👍. I knew when you remove that fitting and it was red that it tore the copper 🤣🙈. I've done it 👍👍🤜🤛

[@ronaldzeigler9057]

Tip is clean today ha!

[@905Alive]

a thought would be to put the leak detector in the box prior to opening any doors

[@fatkiefbowls]

love the mentality brother

[@MaxStax1]

Hey Sporlan/Parker guys., how about you put your smart engineers types to work on making a "simple' heat block disc to include with your filter/driers to protect your awesome filter/driers while brazing them in. No more wet rags.

[@FrostBlueFire]

Ive seen a couple brands that do that, i dont remember the names however

[@etherealrose2139]

Or... he could use any sheet metal as a heat shield/reflector. Might be a PITA but he does enough of them he could easily do that in a few shapes and sizes. Put a wet rag behind said metal to further protect and it won't instacool the joint.

[@juniormint3136]

Maybe for the guys that use a tiny ass jewelers tip to braze so they lose all the heat in the metal. Work hot, work fast.

[@cuthbertmalcolm3651]

You make it look so simple any way is it possible to slow down the auger on a hoshizaki fm flacker

[@hvac01453]

A few things,...Danfoss doesn’t require a wet rag wrap with those SS txv’s. The SS sensing bulb won’t anneal and break from repeated bending like Cu will. On a rub, the SS usually wins. Oh, what were you saying about no need for subcooling.... how else will you know you have a solid column of liquid to the TXV? Many times there is no sight glass, I didn’t see one there.

[@elijahtalbot5288]

Nice video

[@nickbolin7346]

I hate R-290 units. Although through my talked with tech support I've learned that no R-290 unit will work in a 90 degree or above ambient.

[@etherealrose2139]

That's an issue of the compressor and TXV. R290 can work just fine if compressed to high enough pressure to raise the heat above ambient and expel it and then metered correctly at the TXV to drop the pressure so low it'll absorb the heat. It's a design thing.. saving money or maybe safety but I doubt that. Propane can be safely pressurized to 200 PSI. So I'm guessing money on less metal and smaller compressor that can run on 120V

[@juniormint3136]

Its compression ratio, r290 has a ratio like r22.

[@shawnrivera3071]

Great info thx 👍🏼😃

[@GlenS123]

Next time use some white brazing flux with those copper plated valves. Not perfect but will help getting a "cap" on your brazed joint against stainless.

[@ajskoudetechniek7239]

Why do you do the filter first en then the expansion vale. Now the filter is open longer than open the nesseserry

[@juniormint3136]

Cuz the drier was in the front so change that first i guess.

[@theradioweyr]

Propane and propane accessories. Gawd I love 290 for experimental purposes. For real life, well, not so much.

[@carmenrepucci]

Have you tried using TIG gloves when brazing? They are pretty thin compared to some alternatives. Thanks for making these videos! They are always fun and informative to watch!

[@billymcguffin6038]

Hey Chris, good video. Manitowoc told me the other day they won’t warranty these danfoss valves if they are leaking from factory braze joints, and want it re-brazed. Been doing warranty work for then for 10-15 years and never had that issue before yet I find them leaking all the time. I always replace them bcuz re-brazing it puts to much risk on the service tech.

[@dmiestercommkitchentech3043]

You mean WELBILT not Mani right

[@billymcguffin6038]

@@dmiestercommkitchentech3043 no, We are a Manitowoc ice machine CSR and tech support told one of our other techs they won’t warrant the valve if it’s a bad braze joint. I have had them warranty this issue for years, probably close to 100 valves myself in that time but apparently they won’t cover it anymore

[@dmiestercommkitchentech3043]

@@billymcguffin6038 I know but Manitowoc changed their name to Welbilt over a year ago because of the multiple manufactures they have under their corp umbrella and yea I know all kinds of things are changing when it comes to warranty Thanks 2 COVID-19 if the manufacturer can get out of paying for shoddy work they will and their will be more warranty rejections coming for shoddy factory work

[@dashcamandy2242]

@@dmiestercommkitchentech3043 Oof... Manitowoc changed to Welbilt, famous for crappy household kitchen appliances?

[@dmiestercommkitchentech3043]

@@dashcamandy2242 like what do they manufacture in household appliances I have only dealt with them for Commercial equipment like Manitowoc, Delfield, Merrychef, Frymaster.....

[@tjnorton100]

What I do with small refrigerant charge is shrink wrap the caps on the access valves.

[@treverkirk8110]

Interesting I didn't know about the copper plating on the inside. Honestly would probably use 56% anyway

[@disneyplus5793]

So the pinching tool... it pinches the line so no gas can go trough yet when you undo it can? But it deformed the line? Doesnt it weaken the line at that spot ?

[@AnUnapologeticApologist]

No it doesn't. You pinch the line closed then braze it shut. This practice was common way before 290 became common again. True Manufacturing for example wants you to pinch lines closed on new units even if it's 134 or 404.

[@KashMan91]

@@AnUnapologeticApologist and what do we actually do for 134/404? Leave access fittings on and ensure they're tight.

[@UltraHydrophobiccoat]

Most R290 units failed within 2 to 5 years. Either temperature control or leaks

[@DANIELSTv]

What happens does it eat the lines?

[@johnflaherty9945]

Delfield, at Whole Foods Market...Hard piped... 3 years into, Gas lost evap weeping all kinds of problem

[@dfelt4870]

Propane has a heavier density then air so one has to be aware of that .Just saying. Can anybody tell me if r-290 has any odourant in it as propane ( LPG ) here in Canada requires either Mercupon or Mercaptan as a safety alarming odour for both LPG vending @ a service station or delivered as home heating fuel ?

[@etherealrose2139]

The amount of LPG in the system is minimal. It won't come close to reaching air to fuel ratio for combustion. Better safe than sorry... but it is minimal risk.

[@harrydickson4575]

👍👍👍 excellent job

[@philltafolla]

Key to braze those Danfoss expansion valves is , to use a soft flame . I never use nitro when brazing those 🤷🏻‍♂️. Good video !!!