I CAN'T BELIEVE THEY APPROVED THIS REPAIR
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- Опубликовано: 25 июл 2024
- I was a bit surprised that the customer approved this quote but with the shortages these days this is happening more and more.
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00:00 VIDEO START
03:49 REPAIRING THE CRACK
06:47 WE ARE BACK TO REPAIR IT
07:12 BIG BLU FOR THE WIN
10:00 BRAZING MONTAGE
12:23 BLOWER ASSEMBLY PROGRESS
12:47 TIGHTNESS TEST WITH THE SMAN 480V
14:09 EVACUATION TIME
15:33 COMBING THE DESERT
19:03 CHARGING TIME
25:52 TOPPING OFF THE OIL CHARGE
26:15 CLOSING WORDS
I have no idea why i'm watching videos for a profession I don't think i'll ever enter, but man are they enjoyable to watch. I like the way you explain things, and the music choice was cool. feels like i'm about to watch the intro to an 80's action movie. love it! keep it up man.
Same here. I'm in software development but these videos keep me interested! I think if I didn't go into software I would have either been an Electrician or possibly an HVAC tech. Both professions interest the heck out of me.
Why do a million people say the same thing you do? Because your part of a bandwagon generation. De-evolution is you.
I own a restaurant. And I LOVE your videos. So filters. Belts. Pulleys. Contactors. I tackle them myself. And yes. My kitchen wouldn’t close the walkins….UNTIL I put a screaming door alarm on the doors. Fixed.
"Drill a hole at the end of the crack to stop the crack from spreading" that gave me a flashback to a mayday air crash investigations episode where mechanics did that like 3 times, until it ripped off and the plane crashed
thankfully not a lot of package units fly. usually....
That was Chalk's airplane, and the repairs were nasty on top of being inappropriate. They drilled holes then covered the cracks in glue so they expanded without being seen until too late.
@@SupremeRuleroftheWorld At least that's the plan ;)
Seeing what some companies do to those units, I wouldn't be surprised if one gets airbrone :D
@@Thomas-lq1jw dont give trane any ideas
@@SupremeRuleroftheWorld I'm more afraid of some of Chris competitors :D
I'm relatively new to commercial service."about 2yrs" and I feel like I've learned so much from you're trouble shooting videos. Keep making awesome in depth videos for us new guys!
I work for a manufacturer and I feel like we are the only ones selling chillers and RTU’S 40-120 tons… finally hitting a kink in the supply chain with fan motors. Good job on that call
How much of that has to do with manufactures saying they aren’t accepting any orders?
Who do you work for?
Who?
@@tkaneci2 Daikin
@@ThePete2432 hardly ever see you equipment here in colorado unless it is a dinky mini split that doesn't work or a vrv/vrf system.
I love how in depth you get with everything. In supermarket refrigeration we would quote a new unit and keep it moving contract work makes you lazy.
Repairs, suddenly valued in a world of scarcity. Maybe preventive maintenance, too!
. . . nah. Things will run forever if you just ignore them hard enough :)
Planned maintenance is always cheaper than emergency repairs.
@@BlackSoap361 Yup! Prevention beats a cure and all that. Especially when the cure now has a four-to-six-month lead time.
@@BlackSoap361 thats a blanket statement and not even nearly accurate. Ever owned a drift car?
@@davidopitz972 I’m talking about responsible engineering and management practices.
Re: the crack repair on the bracket, in aviation we would normally stop-drill, paint, and rivet on a doubler plate over the crack to stop flex.
Probably overkill for a unit as beat as this one looks though: Your repair should outlast the remaining service life on this thing!
I was thinking the same thing. Maybe that's an aircraft thing.
Definitely the better fix.
@@sydnerland9624 Not sure I'd definitively say "better" - a doubler repair will probably last longer (so "more durable" for sure), but if this unit only has another maybe 5 years of service life before it gets replaced the Chris can make the braised repair in half the time of the riveted doubler repair the customer might consider that "better" (fewer hours spent on keeping a beat machine they're going to eventually scrap running).
If it was a new AC in its first year or two of service? Then yes - a doubler would definitely be "better" IMHO.
I also was thinking about how we do it in aviation and was surprised to see it being used in HVAC.
In HVAC, people aren't at risk if the part fails again. ;-)
Happy to see someone putting effort into a service call. I work at a company where people would say a lot of things you do are unnecessary or needless. Thats because they say that to me and i work like you do. Good job.
I am in the HVAC business and love to watch your channel. I appreciate your Big Picture message. Keep up the good work Chris!
I work commercial food equipment but am being taught refrigeration, just got my epa but have been watching your channel so helpful
As a service technician for the actual manufacture of that machine, almost all of our guys don’t use digital gauges and for the most part just go back to the old fashion three port gauges even me who owns a pair of those gauges. We found out sometimes too much information isn’t that useful and can be a hindrance sometimes
Very nicely put. Best not to over think situations. I’m licensed in Texas but retired. I still like analog. But the young whipper snappers like all digital. I do enjoy this guys videos.
I'm young and I prefer digital gauges, same with digital watches haha. Using them really helped me better understand superheat, subcooling, saturation temp etc
I agree I like old school gauges! Remember folks it’s not the tool it’s the monkey
Great video. It’s hard to find someone who knows what they’re doing and does good quality work like you
Thanks so much I try to do my best! I will discuss this on my Livestream this evening 5/23/22 @ 5:PM (pacific) on RUclips come over and check it out ruclips.net/video/gN63qbrnI9s/видео.html
“I can’t believe they approved this repair…” yep, I’ve had a few of those lately lol. About a month ago I fixed a leak on a similarly sized “rectangle” Carrier, on the discharge line. My current “overkill” vacuum setup is a run of the mill JB Platinum 7cfm pump, through single 1/2” or 3/4” (can’t remember the size) Appion vacuum hose, through a vacuum rated Appion core removal tool (with the core removed of course). I used this exact setup for the first time on this repair, and was in total awe that it got down to about 400 microns in about 15 minutes. Then after I charged it up and let it run for a bit, I shut the unit off and heard a faint hissing. I was about at the end of a 10 hour day, so I about flipped out thinking my leak repair didn’t work and the leak reopened. Turns out it was just the indoor blower running making that sound. Sometimes it’s hard to tell when you’re exhausted and surrounded by other noisy running equipment. 🤣🤣🤣
Some tips for the newer guys, as I learned from my own experience:
1. never ever, as much as possible, pull a vacuum through your manifold; they will leak and are not designed for it. Even though some of these SMAN’s have a vacuum port, still don’t. It will still leak and take you all day to pull a mediocre vacuum.
2. Change out the gaskets and O rings on your vacuum hoses and accessories regularly, as they deteriorate rapidly with use and will leak. Having trouble getting a new gasket in the hose? Just use a little bit of vacuum pump oil to lubricate; will make installation a thousand times easier.
3. Make sure your core removal tools are of good quality and are vacuum rated; Appion makes a really nice one (which is what Chris is using in this video). Avoid the ones made by Yellow Jacket, they are cheap trash and fall apart quickly.
4. When dealing with a system with those stupid annoying Coremax valves, you will not be able to remove the valve core with conventional tools. Get a couple of vacuum rated core depressors (they look very similar to core removal tools) to hold the valve open. Since these valves are designed for high flow anyways, keeping these valves open is similar to the same amount of flow you’d get with the valve core removed from a traditional schrader valve.
5. Change out your vacuum pump oil regularly; you’d be amazed how quickly oil gets dirty even when using the gas ballast. Dirty oil makes your vacuum pump far less affective.
When you switched from the high side to the suction with your hose you have about 6” of non condensables in that part of the hose. I know everyone can’t catch everything but before screwing the hose on the service port allow the liquid refrigerant to escape before seating the hose on the service port. Just a humble opinion.
I dont see it shown here, but he has shown in the past where he will purge the line before fully seating the line on the schrader
I'm pretty sure I read that when switching to 407C ithas to be a txv system.
Chris, I always carried a quart of muriatic acid not only to clean the surface but to also remove the galvanization on these blower cracks, wire brushing and drilling a hole to stop the crack was the right move, I rarely had it crack more after that, unless the vibration problem was not taken care of. That was a trick an old sheet metal duck shop taught me. But good job, like you say in some cases your are just polishing a turd at some point. lol
I'll be binging your videos once I complete my Gas Tech 1 exam this afternoon. Can't wait to start focusing on AC/R once I've got this exam written.
Good news. Passed with a 92%.
Fieldpiece app:
Add ability to use a temperature probe to pull in OAT just like they do for R/A and S/A.
I was told this has been "in the works" for some time now.
I've brought this to their attention too and have been told it is coming soon....
Great job Chris, Your always serious about your job, not everyone is as serious, and you would get stressed with customers, but the point is your getting better and not letting the negativity bother you, and you got your techs and helpers now.
Interesting repair. Bottom line is you did the best you could for the times and as always it's up to the customer on the final say what they want to be done.
I haven’t had good success brazing over cracks, they usually crack again. I probably would have cut that section out and used a 90 and a street 45 to make that bend. What do you think?
I agree, it might have just been easier to cut a new section
Drill a small hole at each end of the crack, it prevents the original damage from spreading. Then braze over all of it. But it’s critical to remedy the vibration that caused it in the first place, or all bets are off.
@@TheMinecraftACMan I like to install a vibrasorb whenever I have a pipe crack
@@jsfkdkjslfdslfkdj never seen 1/2" vibrasorber before. I thought they started at 7/8
@@kaptaintrips I’ve seen them down to 5/8
Awesome video , in this industry absolutely no one has all the answers and sometimes an outside perspective helps a lot. Excellent job going above and beyond finding the initial cause of the leak as well , impressive. To many people don't take the time or just don't have the thought process in place to think that way.
Your videos are educational. I'm in West Africa Sierra Leone. I love your videos
Thank you for all your hard work, it really is so helpful man! Very much appreciated
Chris! Two purges was missing. 20:55 but there is a chance you purged after camera was off. But 26:20 was not purged. I think it doesn't matter, but not so good practice when showing.
Love the videos! Your videos is the only sub that I can't wait for the next video.
I would check the compressor windings, and make sure it is not going to high to ground. I have had systems with running compressors that have a ground in them. Especially if the oil is very dirty.
I see your brazing, and are using more oxygen that I was taught to use. By having a '"Lazy Flame" it will solder easy. So light the torch like you normally do, then reduce the oxygen a little bit, and see how the blue parts is longer by about 1/4". That is considered a lazy flame.
Your editor is doing a great job, love the increased number of videos!
That was a Great Video and Awesome repair. Had a similar issue with a York Unit and the unfortunate problem was the cost of the components to rebuild the unit. We thought that would sway the decision for replacement. Offered and strongly insisted that the customer change the unit, but lead time was something that could not handle. So we rebuilt the unit and changed the evaporator, and compressors due to history of reported problems and failures.
Enjoyed the video as always . I just started working on rtu’s adding to my business. Your videos have been helpful.
for the cracks in the housing; I would have cut out flashing plate to make covers/supports to rivet onto both sides for support and strength. Would probably hold/last longer.
Just a good tip for you =)
another option, get a 110v gasless mig welder, drill the end like the vid then run a weld along the crack, assuming you know how to run a mig it should hold better then the sheet metal.
He DID drill the crack...
@@moehoward01 must have missed that little statement, didn't remember hearing it.
yeah i would cut out the crack with a cut off wheel then weld it back together
@@JaredKaragen you also see him doing and after doing it he repeats why he did it. 4:40
Strongly recommend PPE respirator appropriate for brazing on galvanized metal - the Zinc vapors will be really toxic.
Awesome work once again. 😁
I just managed to do a DIY recharge on the family car AC which was out of gas for months. Never messed with AC systems before but it all worked out and I got the entire Can of Refrigerant in there without any disasters.
But there is nothing like watching a Professional work to remind me that I am just an amateur ~~
@Jimmy S didnt use a sealer I want to know how big the leak is
That’s was the best soldering I have seen from you fir a very long time
The music during the brazing was bad ass
THANK YOU for the subtitles!
I know very little about HVAC but this was an interesting video. Nice to see when people can make content like this while working in a skilled trade.
Great video as always, this is reminding me of the great recession, dont waste your time thinking they will just replace it, its getting fixed! Im curious if there was a reason to add oil after it was running, instead of right before flipping the vacuum pump on? Love to see a deep dive on proper steel/steel, steel/copper, copper/brass brazing as my memory maybe getting dusty.
I have to improve my pump down setup. It takes about and hour-two hours for me to pull a vacuum. 6 minutes sounds like a blessing
“Stop drill” we do that in aviation work on airframes.
you make this all look so easy man, I hope to one day be as good as you. I started about 6 months ago as a parts runner, moved into doing PMs a few months after and now theyre sending me on breakdown calls, but there are some calls that absolutely kick my butt. I hope with experience it becomes easier but it feels like its gonna be a while lol
You’ll get it man! His videos are a great help.
It takes a while. 7 years in and I still have some calls that give me a run for my money but just learn as much as you can and pay attention to small details
The music during the brazing portion brought back some memories😂. Crazy to think there’s a generation of adults that weren’t alive in that era.
Yep, there's several pieces of equipment that I have repaired that should have been replaced so far. I'm still waiting on a temperature controller for a hot case that I ordered in February.
Amazing video Chris! Thanks for continuing to put so much time and effort into these… I truly thank you!!
Crazy this video came out. I just had a call with a cracked discharge. I wondered why. Well, we got approved to repair it. Charged the system and the metering devices are all clogged causing very low suction and big vibrations in the compressor. Now I get to do it all again...live and learn. Then again, the leak was so bad I couldn't run the system to tell that the metering devices were clogged so...
Looking forward to see more upcoming refrigerant conversions on rebuilding the dinosaurs, since you are so meticulous and thorough in processes.
Good information ... Thx for sharing ...
In the uk r22 is fully unobtainable and phased out, nevermind prices.
We usually dont use drop ins much depends if its a split unit then we replace the whole unit especially since r22 unit parts are usually obsolete, but this being a large system its good to try to keep it going i suppose.
Saying that r22 is so redundant in the uk being replaced with r407c systems then r410a and now we install r32 systems. But it was a great refrigerant and worked well.
Awesome job love your thourghness thank you fo r making the video
What a awesome video I learned alot thanks
Oh yes! I do enjoy an 80's brazing montage. What's the song called?
I had a blower section like that and the motor mounting plate and i noticed they sent me the updated motor adjustment plate than makes it sit lower where the inner section slides in the outer. Like it much more than those that bounce
I struggle with where to place my joblink temperature clamps on systems. I know Jim has specified like 6" away from compressor or service valve, but I still feel like I'm guessing when I put my probes on a system. Anyway you could do a video to overview this topic? I think it would be very beneficial to new techs trying to utilize digital. Thanks! -Will
why do all these professional ACs look like i built it at home, cables here, there, over sharp corners, no sealed boxes, no wire description, what a mess
Brazing montages make my day.
Again my man is going above and beyond
I was saying he should drill a hole to stop it spreading... Then you said now I'm going to drill a hole to stop it spreading.... lol
I was once told never offer the inappropriate option in a tradeoff as management will immediately adopt it and hold you accountable for success of the overall project. They NEVER hear the qualifiers like...it will cost you more in the end!
Nice job showing the Fieldpiece micron datalogging. More visuals of what moisture content looks like graphed out so technicians understand the difference between moisture and a leak
Hey! I just replaced a disconnect and re ran #6 for one of these at my local bakery.
Lol, I was playing the HVAC drinking game. On this video title I guessed, polishing a turd and It is what is, I won!
I have a carrier 6 ton from 1997. Last summer compressor went. I suggested replacement of unit. Nope they did compressor. Get comp and and find out metering devices are plugged and condenser fan motor are shot. suggest maybe its time to replace unit. Nope replaced metering device and condenser fan motor. Fast forward now to winter, service call, blower bearings gone, blower wheel wrecked, gas valve and board failed. And guess what , all being replaced lmao. Sometimes we can only make suggestions and do what the customer wants. Nice job once again!
Hey man just picked up a few tools from true tech tools and used your code. Thanks for the videos
Well according to my family Im older than dirt I liked using the old wood gauges that used a metal spring that would move by temp or pressure. Using those brand new analog gauges is just to advanced for me. Mostly I just eye everything or guesstimate. As long as it sorta works, its good enough!
Oh you would like this: on a job doing a pm on the weather maker, coil freezing up. Merv 13, no load in the space, 65 amb. I state I need to return bc it might have a leak, just be low air flow, or both. They tell me to replace the evap and use fresh 22.
That FIELDPIECE unit is Amazing!! Do they make one of these for the automotive market? I own a shop and would love to add one it!
1:14 "Cattywhompus" From one Tech to Another, I hope you don't mind I use that. Friggen hilarious term for balance.
I watch these so I have a better understanding of HVAC on HD trucks I'm learning to fix. And I'm just a gearhead
For sure bud, it's not my word... I heard it from someone else and just liked it!
I have one of the small "blue" welders, it weighs like 10 or 12 pounds and is perfect for small roof top repairs.
If you get pipe expander tool you can save on using couplings. After I got mine I almost never use couplings. Plus only one joint to braze versus two on each connection.
Great job Mr. Stephens, Im a purist so I still prefer 22 but I love your approach to Service!👍👍
#bringitback
tho I can't blame him for not wanting to drop 1000 per can of 22, hell even big businesses have switched over to retrofits now.
Good stuff 👍
you have to have some cohones to pull a vacuum and wash it while in a vacuum.LOL.it took you a while to start saving your customers some money with the alternatives.the shieve needs another 1/2 turn.great video thanks for sharin.
Yes the music while brazing love it lol
Another comment, blue rod 45% works great at welding metal as well. The nut that you tighten on my blade puller broke lose in the middle of a job and I welded it back on and it’s never broken since.
Have had units that were 25 years old that owners wanted to patch. One unit I repaired about 12 leaks in evaporator coil and still couldn't get it to hold pressure. I finally gave up and said we needed to replace the unit since coil was no longer available. He was upset I couldn't fix it. But then when he got the electric bill after installing a new unit he said he couldn't believe how much his bill dropped. Said he should of replaced years ago. I just shook my head.
I had to do a repair that required replacing the blower wheel,shaft, and bearings. When I asked carrier about a prebuilt blower assembly they told me they didn't do it. Pretty bummed and it made the repair way longer.
On those sized copeland compressors im pretty sure those copper fittings are solid copper where you braze them in. Im basing that on ones ive cut apart to scrap and repairs ive made. I know smaller ones in the small refrigeration size are sometimes copper plated steel like you are talking about. But im wondering if your issue getting them brazed in after doing a oil change was oil contamination in the braze joint. Ive seen that cause issues before. For instance on a repair near a leak where everything is coated in oil. But i really dont know the best way to clean the oil out of the fitting after you dump the oil out. Its not like you can spray brake clean in there. But something to think about next time you run into that.
I must ask if adding any piece of metal would be a better option to repair that crack? I do as part time electrician and sometimes mini splits and im pretty sure i over overreact and add too much so truly want to know what would be the best practice, and awesome move on drilling the end of the crack, i really love watching your vids, true professional at work!
I clicked on the video thinking this was my repair. "At carrier enterprise we care for our customers"
I've got another one coming soon where they approved an evap coil, compressor , and a leak repair on a 12 ton 2002 package unit...
Nice video!
I don't think you need to play music when you're brazing at least I don't think so. I for one like the sound of brazing. I find it relaxing.
Brazing or welding dissimilar metals is always a bastard to deal with, even during the best circumstances with good equipment and experience it can go wrong because one reason or another.
Great work! Love all your knowledge and experience in the repairs that you do. Keep'em coming!
Love your channel but not sure if you know but York Sunline series is a direct replacement for most Carrier package units. Also ICP which Baker sells is essentially Carrier.
hI BRO, here in quebec, i work for one of the biggest company we cant have roof top until 8-9 month delay
Ever try using the quick disconnects for the refrigerant lines
Good job. My customers wouldn't go for a $7000 repair on a $500 unit. They be like - repair the leak, remove n replace 1 drier and recharge
I'm wondering how many companies are trying to restart manufacturing in the US. If they are, it's going to take a lot, because the mines are closed, the refineries (metal) are gone, the mills are shut down, and OSHA believes that all heavy manufacturing can be 100% safe.
Manufacturing in the US?
What manufacturing?
Everything is made in china dude... they hold all the keys now and went full lockdown for the past 3 months now....
@@memadmax69 - Yet the military has finally managed to get the congresscritters to understand that too many parts are made outside of US control. I know there are semiconductor fabs being built right now in Texas. (Bad location. Austin is dry, and they need lots of water. They'd have been better served to be nearer the Louisiana border) That'w why I'm wondering if there's any other that are restarting. Plastics manufacturing, maybe? I have no idea why we buy plastic cups, plates, forks, etc from China, when Houston is a refinery town. We _make_ the plastic solids. With the cost of shipping, why aren't they being done locally?
@@tbelding I think they chose texas more or less because of the stability of the land more or less. Even slight vibrations are bad for chip fabs.
@@tbelding Also, we are losing manufacturing cause we are in a negative feedback loop: people need to be paid higher here, but they need to be paid higher cause of perpetual inflation due to non-stop government spending causing more inflation, causing people to be need to be paid higher and the loop continues on... negative feedback loop.
@@memadmax69 - Excessively paid in a lot of circumstances, because of union abuses. The manufacturing I don't understand being 'outsourced' is that which has minimal labor costs, such as plastics extruding and molding. Also, smaller manufacturing businesses (truck bodies, etc) do manage to stay profitable, so there has to be some other reason for it - I point to OSHA as being a major player in the "get rid of industry, it's unsafe".
i hope you inspected loops on the heat exchanger and faceplate those suck on carriers
I usually bump the compressor with about 75-100 psi nitrogen and you can make sure it pumps something. See the low side drop and hi side rise
The only question I got is how long will that braids repair last on the unit pan and drilling out the end of the crack was very smart I learned that years ago doing aircraft maintenance which I no longer do
With the replaced blower assembly the vibration that caused the crack won't be there anymore.
The blower housing screws to that panel, so will help hold it together too.
Assuming the Start-up, Test and Balance was done correctly. A little trick for adjusting the new motor pulley to the old motor pulley, is to your Hex Keys as a “Feeler Gauge.”
Our town is old, and sometimes I work on absolute pieces of junk. Ever put a compressor in a unit from the late 80’s? Lol
Also need to cinsider within the year the new standard of refrigerant and entirely redesigned systems will be required. It would suck to swap out with a new system that is immediately obsolete.
0:06 nice spacer!
Thanks!
Thanks so much for the support bud!!
Old boss once told me, "strive for 100%, settle for 90%." It's too easy to scrutinize people on the internet, and in my opinion, our imperfect world can't demand perfection. Some things just have to slide. (This comment is intended for the folks that disparage your work because of imperfections)
Bro I like that retro wave 80's work music.😁
Watching this as an apprentice in Ireland when R22 an 407C is banned in Europe. This unit would be condemned as soon as there was a leak in the system.
I don't know why the ozone-depleting R22 refrigerant is still manufactured even though it's dangerous to envirovement.
Temp compensated pressure test? Have I been doing it wrong the whole time? Do you just add the suction clamp when you do the tightness test?
Nicely done. The real world and not text book approach you show is welcomed. Most ofnus would love to textbook a repair.....its just not practical a lot of the time....or will have minimal gain associated.