Really, really liked the tear-down of compressor. All the "normal" problem solving is interesting, but getting into the details of a normally unseen component was great! Well done! Keep 'em comin'.
There is a video of some Indian guys repairing and re-welding them.. Video is not in English but its good. Pay not attention to the safety violations ;) th-cam.com/video/SNTib8YyFWo/w-d-xo.html
Im glad to see that no matter how many years you do this the "hope nothing blows up" never goes away when you hit disconnects. I'm a 3rd year and say this regularly.
I find myself saying this anytime I fix something, doesn’t matter what it is. My wife used to get anxiety but after 15 years she now knows “hope nothing blows up” simply means the job is pretty much done.
Dad was an Aero Engine Engineer for twenty eight years we had many a discussion on the effects of destructive behavior of vibration on critical aircraft parts. Everything from chafing, erosion and failure of said same components. I'm going with the bad mount.
@@Johnathan_Waters When a system is "satisfied" it refers to the temp control detecting the desired temp it's programmed/adjusted for. After the thermostat reaches set point, it opens phase to the liquid line solenoid (closing the valve) so the compressor can pump down and shut off.
Hey Mate, I'm a second generation refrigeration and air conditioning professional with almost 50 years' personal experience and I find your videos really interesting. Keep up the good work!
Great job! I am 3000 miles away. Here, that job would more than likely go out for bid to at least 3 contractors. You’d be dealing with a facilities manager or broker who has the job of making sure you do not make any money. He would take the bids and start calling working one bid against another. In the end, the guy on the truck would being doing as little as possible because his company told him he had 4 hours total to pick up the compressor and turn key the changeout. Some “woman” in the office screws up the quote and they will still want the same profit. An example is I saw a company do a nearly $18,000 30 ton compressor change out and did not even change the filter drier or the contractor. Techs in the field are told exactly what to do and how long they got to do the job. Some companies even tell the tech what roads to take to drive to the job. They have sophisticated GPS driver monitor systems that tell the office has fast you turn, if you slam on the brakes, where you are, where you been, and have a camera pointed at the driver. Mom and pop restaurants will not fix anything that is running, and when they do authorize a repair, the company needs a team of collectors working the phones trying to get paid. California, it must be different. Just about everything is brokered out here, one way or another. How you sell these job is a mystery to me. I bet HVAC companies are using your videos showing techs how easy it is! On large equipment facilities out here, in order to get customers and keep customers, either the salesman gave the job away, or, they send a saleswoman out to screw the customer, or, possibly they send the site contact guy to the Final Four Tournament or on a fishing trip. Everything is crooked, everybody wants something for nothing. It all flows downhill to the guy on the truck.
Slow metal fatigue due to vibration. If you look at the metal break you'll see 'waves' as the crack grew and the steel stretched and then sudden a clean granular area when it finally failed. I imagine the compressor probably wasn't balanced properly and had a harmonic that was ultimately destructive for those brackets.
That's what I was thinking too. Once the small muffler tab one went maybe it caused the other to see vibrations at its resonant frequency. The breaks seem too be the same distance from the bends in both brackets as well so hopefully that design has improved in new models.
My dad once fixed one of these by using a shop vac'd bowl and a hole saw on the crown, then an old can-opener to finish the cut. Replaced the strap and ran off a cut ring to fit in the top, braised it on with the slug. It'd be a hard call but you'd have been known as a miracle worker XD.
When your unsweating a line that your going to re sweat as soon as it’s ready to come off move the heat back onto the compressor in this case and pull the line 90% out let it back all the way in then out again a few times this cleans almost all of the silver off of it making it fit better. You also risk tearing the copper if your heat control isn’t great. I love watching the videos keep them coming
@@liviugabrielancutescu3644 the system is full of it it's circulating oil all the time. Drier catches most of it. A few drier change outs clean it up. That's what I learned over the years. The core type drier cleans a lot of junk out quickly but needs to be changed till the oil is clean again. I'm sure some of the dirt or solids get stuck to the bottom but if it don't get disturbed it's not going to get pumped out of compressor
@@royamberg9177 it's normal to pump just a small amount but that pipe if it was not kept there by the bracket the compressor probably was getting oil and pushing it
Possibly liquid slugging? Maybe caused by low superheat making the compressor pump liquid. The liquid doesn't cool off the compressor and overheats the oil and this happens. I'm not sure, trying figure it out.
Black sludge is from the compressor overheating check your superheat at the compressor If it's a Copeland compressor they want min 20F degree max 40F superheat at the compressor plus check your discharge temperature if it's at 250F oil starts to turn to acid.Make sure your condenser fan are working correctly.
Black sludge can also be from aluminum wear. Aluminum oxide will look the same as burnt mineral oil. Edit: that was definitely from overheating because the valve plate was discolored and it had carbon buildup from burning the oil.
I liked how you slightly heated the dryer replacement pipe just before doing the brazing on the joint. Reducing the heat sink effect of the pipe gives a way higher chance for a perfect joint. Great technique!
I was multi-craft electrician/mechanic in a paper/tissue mill and I did as you. No matter if it was a motor, gearbox, relay, contactor I would take it apart to see why it failed. I did it so much that my team mates nick named me "Tinkerbell" because I was always tinkering with something. I enjoyed the compressor tear down.
I used to love cruise control... Nowadays, I seldom see the highway, and when I do, I forget I have it. When I do use it, I'm surprised it still works. LOL Nice to see the teardown on that compressor, this is the first video I've watched of a teardown. I had always wondered how they made electric compressors, but never really researched it. Seeing the internals here, it makes perfect sense to me, and just as I type this it dawned on me that if you turn that compressor on its side, it looks almost exactly like an air compressor. I don't know why HVAC still surprises me like this, it's tried-and-true old-school technology... Maybe that's because many industries don't take the "if it ain't broke, don't fix it" attitude.
This was a very interesting compressor tear down. I never knew there were so many bits and pieces that interlinked to make the compressor do what it does. Problem-solving skills are absolutely phenomenal, and this was very interesting to watch.
Those crazy Santa annas will blow you away and then you drive by the windmills and see they are off and wonder. Nice job, looked like a relaxing day for a change.
The noise was probably from those sheared off brackets rattling in the bottom of the compressor shell, whatever, it wasn't right & the replacement of the compressor was the way to go.
I have learned a lot here. I will probably still call an HVAC tech to do compressor changes or charges, but I sure as hell soak and rinse down my compressors monthly and swap my air filters religiously now since watching this channel.
I want this comment to be as fair and honest as possible! Having the benefit of watching you work as an observer over your shoulder its unfair for me to be critical of your technique and industry best practices. I absolutely love the imperfections and your frustrations at times!!!!! It allows me to strive to be better and not be so hard on myself as well. Cheers!
Had a scroll compressor on a Data server room unit that was making that noise, but cooling and running fine. I wanted to replace it before it broke but my service supervisor and manager said no. 6 months later someone else has taken over the contract and it went out. He said he felt it would have been best if I had replaced it in the spring like I wanted instead of middle of the summer. 🤷♂️
Had no idea why this video was recommended but find it oddly satisfying. Can remember when HVAC became a thing at the Vo-Tech schools. Never bothered to check into. Wish I had.
Others have touched on this, but I believe I can explain what you are seeing with the oil and carbon deposits. Was this originally an R-22 system years ago, before the condensing unit was replaced with an R-404 unit? The reason I ask is that it looks like there is mineral or alkylbenzene oil mixed in with the POE oil. Mineral and alkylbenzene oils are good oils when used with CFC or HCFC refrigerants, but not so good in an HFC system. Also, mineral and AB oils will decompose into carbonaceous materials at lower temps than POE oils, but even so they still requires discharge temps above the manufacturer's specified maximum for the compressor (around 225°F-250°F for the Tecumseh AV series). I think that is the case here. The compressor discharge temp must be well over the manufacturer's rated maximum in order to have caused the discoloration on the valve plate and the carbon deposits on the pistons and valves, as well as the sludge in the oil. High discharge temps are caused by the usual things: high compression ratio (seen in systems running low evap temps), excessive superheat, excessive high side pressure (dirty condenser, overcharge), etc. What you are calling "copper plating" on that bearing end plate isn't copper plating. That is actually a copper thrust surface. The entire weight of the rotating assembly rests on that thrust surface, so copper is used as the bearing material for the steel thrust surface of the crankshaft to ride upon. Copper plating should not occur in a dry, acid-free system. If the system contains moisture and/or acid, that needs to be addressed immediately.
That small tab looks like it mated that "muffler?" Thing to the suction line thing. Once that snapped, the muffler thingy could vibrate... and that vibration probably caused that other little bar on the suction line thing to snap. I'm sure those two tabs made a bit of noise at the bottom but those two side units are sitting right next to the pistons and now have play... so they were probably making the most noise. Yeah it works but you know that vibration would have caused another break that would have been far more catastrophic. Good swap and thanks for the dissection. I love seeing the inside of motors. Makes the video awesome to me. I'm just following your nomenclature but I'd guess that muffler is something to do with the oil or discharge line but I didn't see how it came out of the case. I don't see why there'd be a "muffler" on an electric driven motor but i haven't a clue.
I've always called them mufflers as well. I once dismantled a scrapped compressor (which still worked. The whole unit was scrapped due to rotted coils) and ran it with and without the mufflers. It was much louder without than it was with. It's surprising how loud it is period running outside of the steel housing pumping air. Of course, when it's still sealed in the hermetic housing it's much quieter either way.
@@Matt_Deluca good to know, I really didn't realize they'd have one. Though I'd wager vibration dampener might be closer to the description but again idk
Good Vid ! That oil in the Bottom of the compressor that ooks like 1 Thick oil and a Thinner oil is Exacly that. it is 2 Diferent oil types that Dont Completely mix. The thicker oil is the Mineral Oil and the other oil is either alka benzene or poe. old system and a few compressor changeouts = different oils in the compressor. Thats one of the Drawbacks of NOT being able to do oil changes on a Hermetic compressor after doing a compressor change out.
That white thingy was the sound that was heard when it was banging like crazy in its seat, just a matter of time before it got destroyed and spewed pieces all over the oil that plugged oil holes and the compressor got seized.
Super interesting watching the teardown of the compressor. I knew roughly how they worked, but that let me put the parts to a.. face? I'm sure you know what I mean.
Nice. That’s pretty interesting. Seems like the valve plate was overheating and maybe started breaking the oil down. I opened one recently because it sounded like rocks inside and it turned out to be a mounting spring broke and the whole assembly was bouncing off the shell.
The thing that made me most appreciate cruise control wasn't the 3+ hour drives for work trips or even the hourlong commute to one project, though I certainly did appreciate it for those. What really made me realize how nice it is was having a wheel speed sensor go out and disable my cruise control during the project with an hour commute each way. I'll never take it for granted again, haha
This is pure speculation on what broke the metal tab on the muffler and the metal strap for the suction inlet, if the vibration pads where bad the compressor might have vibrated itself until it broke. Great video too, I'm an HVAC/R and commercial kitchen tech, I love your videos just because I love seeing what other people are working on and doing, I like hearing your thoughts on things as well. Keep up the good work man.
If you have clients that have major contactor problems due to sand/dust getting in them, ask them if they want you to reroute the contactors into a Explosion-Proof box mounted on the outside of the compressor cabinet. Explosion-Proof boxes are what's used in places that have lots of fine dust (that tends to go BOOM if the concentration is too high and there is a spark, like Bread Flour factories and Sugar Refineries). They're the next best thing to Hermetically Sealed and no sand or dust is going to get in them to ruin the contactor... These boxes can also protect mechanical time clocks too...
Im pleased that you've taken apart one of those "hermetically sealed" compressors. Luckily we had cut out units back when I was earning my certification. Vibration was probably the issue here.
@@HVACRVIDEOS I'm actually transitioning into the trade and I've been listening to the podcast, I've watched more of your videos but I can't watch them at my current job but I can sneak in a podcast and I believe it was a older podcast where you guys were breaking down some basics and best PM practices
I dont know shit about AC units etc. these videos are just interesting and fun to watch, but that compressor seems like it was like "nah, f* this, imma keep going....". Props to the compressor.
It's pretty amazing how 85° in the desert isn't hot but 85° in the midwest specifically in Wisconsin is brutally HOT because of the insane HUMIDITY. Living next to all the Great Lakes is is nice but damn does it get humid. When it gets to 100° out here it feels like 140° and it's just wet and muggy like a swamp.
A great video! Liked the compressor teardown! I used to cut open scroll compressors and would usually find the failure was from them binding due to wear from the pot metal parts wearing out ! There would be a large amount of metal shavings in the sump! They're very cheaply made! I personally prefer the turbo torch because the flame wraps around the pipe and the silfos flows better and you don't have to move that bulky torch around so much ! The turbo torch tip is so much lighter to! I 💯 percent agree with you that the whole unit should have been replaced! You as the company owner should have convinced restaurant that it would have been much less expensive in the long run! That was a perfect opportunity as it was still running! Liked that you used the heat dough on the service valve make sure to tell your techs about that! To few technicians are using the heat dough! It's some really good stuff unlke that worthless messy paste! A very though we'll make video !
8:43 priceless afterthoughts "and don't grab a hot flare nut" as a fella who's worked many career/contracting fields, been there done that! fingers, hands, arms, legs, stomach, back, NOSE(yeah) etc. poooooo happens, more when distracted
For future tool buying thought.. i used all my career the D-Tech.. I now use the D-Tech Stratus... It is SOOOOOO worth the money... I found leaks with the status that i didnt find with the other..The tools with PPM reading are just that much more accurate..
Awesome! Thanks for my first look into the guts of a hermetically sealed compressor! And as far as Tecumseh goes, personally I've always had WAY better luck with their mower engines VS Briggs. But Idk if they even make small engines anymore. Seems like forever since I've seen one...
No they don't, they only sell parts for them anymore. Moved on to other things. We had a 90 GPM water pump with a briggs that blew a rod, took out the piston and hooked up a tecumseh to the briggs, ran it that way over a decade while the briggs didn't make it past summer #2.
@@leebarnes655 Lol doesn't surprise me. My uncle had a newer rider with a twin cylinder Briggs and one day there was a loud noise and the engine seized. I took it out and tore it down and there wasn't much but metal dust left to one of the con rods.
Just would like to chime in on a couple of the comments below,yes Chris is BRAZING NOT SOLDERING,SOLDERING IS USING A FILLER THAT MELTS BELOW 850 F,BRAZING IS ABOVE 850 F. Sil-phos 5 or 15 is liquidous around 1275 to 1400s,Safety Silv 45 or higher is around 1250 or so.Welding is a fusion process!Brazing is essentially using a similar or compatible filler and basically gluing the tube together!
Peter Smart so inductively-reasoning, a solder is neither a similar nor compatible material, does not 'glue' materials together, while brazing cannot backfill- think I got it now.
I've welded cast for years,but if you actually know the process,the preheat and postheat,you are not actually welding cast iron,BRAZING repairs have been done on cast for years with great results,nickel melts and adheres to cast ,it is very compatable, and strong . It's more about the metallurgy and the process and who carries it out.Most people believe that welding is stronger than brazing,there are brake joints that have tested at over 80,000 psi and weld that only test at 70,000.
i want to vacuum police you, but you did it yourself lol. unlucky on that packing there, yes they always leak; which is why i like to put nylog on the valve caps during vacuum just to be on the safe side. pulled a 220-ton circuit down on a chiller to around 600 microns in a couple hours, took the whole weekend and on monday morning was down to 170. sometimes all we need is more time, which we usually don't have. great vid though, keep up the great work and thanks for all the teaching along the way! p.s. impacts rule
Really enjoyed the teardown! I have cut a few different styles of compressors open in the past. I have not seen anything plastic inside one before, like the one you have.
When I go into large tools, and they ask me how the heck I have so many notes on a repair. I always tell 'em that I played a game of "where's waldo" inside the tool. And that's how I end up finding odd things like snapped metal parts, leaking oil, dry grease on railings, and rusted bearings. Always fun to look at it, repair, and get it going again. But sometimes I wonder.. how the heck did it break in the first place. #firstworldproblems lol
That was interesting to see inside the compressor. Hope it doesn't blow, cool tee-shirt. I was thinking maybe it was a caniblet pin or part of a muffler bearing. 🤪
That noise that the compressor was making is more likely the result of the compressor knocking against its housing, I don't believe that it was caused by the loose parts at the bottom of the housing. At 19:08, you can see an abrasion on top of the muffler which suggests that significant movement has been occurring. The part that caused the abrasion looks to be what the bracket stops from moving and based of the position of the parts as shown, the movement has been purely rotational. This suggests to me that the bracket on the muffler was there to counter the rotational forces of the compressor and motor which, because of how physics work (the compressor will try to spin in the opposite direction that the motor spins in), means that the bracket had a fairly constant load on it for a significant portion of its life. What we see at 19:08 is probably the biggest clue that exists to what caused the bracket to fail. But whatever the reason is, there is probably a good chance that it all comes down to a design flaw or manufacturing defect.
The noise probably came from that plastic thing and the other muffler looking can rattling loose inside the compressor. There may be already some fine contaminants released from the plastic wearing down, hopefully caught in the dryer, but if the plastic was allowed to wear all the way to crumbling the failure could have been much more catastrophic.
Nice of the customer to allow you to replace it while it's still cooling. I might not have made the same decision if it was my equipment and it was working properly
Fred definately a man of steel! Taking down those chimneys by himself, a brick at a time. I liked in one where he got the photographer up on the scaffold, and then the bloke said "how in the world do I get down from here now?"
First time viewer, Also gained you a sub.. My guess on this compressor is that the muffler bracket broke off.. Got stuck on the bottom and broke that intake bracket loose.. At that point, the intake was bouncing around.. And that was the ROCK noise you heard.. Amazed the intake isn't beat all to hell though.. Anyhow, awesome video! Loved it!
She's thrown a rod! Running on one cylinder. Or not! Wonder if there are different types of oil in there that don't mix? Some old stuff had alkybenzine oil, not sure if it mixes with POE.
@@VenturiLife a few bucks can add up pretty fast, but in his recent stream, he was called in to that same place in this video for this unit and one of the fans has gone bad, though this is 4 months after he shot this video (but in hindsight it probably might have been a better idea to have changed it)
HVACR VIDEOS Look at the ends of the plastic manifold where it feeds the suction inputs of the cylinders. It has clear signs of being hit by the valves!!
Maby that compressor was experiencing flooded starts. It would explains how that little manifold bracket broke when their was an explosion inside the shell. Idk. That was a weird one. Great video
Derek Mc high amperage on the new compressor too, so the problem didn't simply go away with a part swap. Sounds like an automotive-curse is overachieving far outside of its jurisdiction.
I live where the average humidity is 70% so it's a lot different from your area. And when it gets to above 85 degrees I lose my ability to function. I couldn't even fathom the temperatures you work in, thank God we only have 3 or 4 days a year when it gets above 90.
I will discuss this on my livestream on TH-cam this evening 9/28/20 @ 5:PM (pacific time) come on over and check it out, and if you can’t make it to the live no worries it will post as a normal video afterwards th-cam.com/video/lN1JzYbER68/w-d-xo.html
Hey Chris, Great video !!!! I’m still a bit new to this Refrigeration trade And I noticed at 10:38 you said you need to cut the suction drier off and just replace it with a pipe, Why did you have to replace it with a pipe ?
Because before the suction dryer appeared, it was just a pipe. The universe without a pipe in the time line exists in a separate paradox. I should put together a list of reversal-related videos for binging.
As i just finished hvac school, i was lookin at my heating and cool essentials book as i was watching this to learn more. so with this aid, it might seem to be the restrainer from the valve plate (as the suction and discharge valve reeds face the pistons) with the second part looking like a piece that held the discharge muffler in place. maybe the constant pistons' vibrations wore it down? pretty late to this vid
I bet brazing in that wind was fun. Cool tear down! I’m the same way, I always wanna take stuff apart to see what broke and/or how it works and is put together.
Teardown was amazing would love to see more about how the guts of a compressor work how the stuff flows where...and I gather different types of them work differently. One of the best yet! Is the whole thing full of refrigerant even the motor sitting in it or is it like a sealed system inside a second enclosure?
I had this problem a few years ago,, The compressor sounded like broken glass,,, The problem was caused by a contractor switching off the power to the building for a few days.. The compressor cooled down, liquid refrigerant accumulated,, when power was restored it tried to start up with all that incomprehensible liquid,, and smashed.. All good fun.
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Really, really liked the tear-down of compressor. All the "normal" problem solving is interesting, but getting into the details of a normally unseen component was great! Well done! Keep 'em comin'.
There is a video of some Indian guys repairing and re-welding them.. Video is not in English but its good. Pay not attention to the safety violations ;) th-cam.com/video/SNTib8YyFWo/w-d-xo.html
The video is from Pakistan
I could not have predicted how much I like watching these videos....
I know! I have ZERO knowledge in HVAC, but these videos are fun to watch.
Never thought I’d love doing it as much as I do but here I am on top of a walk in on Sunday eating lunch and watching this video lol
You and me both brother
I just enjoy watching skilled tradesmen do their thing. You also learn a lot.
This is my job in Kuwait, I did Not know this would a satisfying thing to watch.
3:07 "You have to be careful with these" ... Code for "Not OSHA approved" ? Lmao...
Im glad to see that no matter how many years you do this the "hope nothing blows up" never goes away when you hit disconnects. I'm a 3rd year and say this regularly.
I find myself saying this anytime I fix something, doesn’t matter what it is. My wife used to get anxiety but after 15 years she now knows “hope nothing blows up” simply means the job is pretty much done.
Dad was an Aero Engine Engineer for twenty eight years we had many a discussion on the effects of destructive behavior of vibration on critical aircraft parts. Everything from chafing, erosion and failure of said same components. I'm going with the bad mount.
Sticking a strong magnet at the bottom of that compressor would solve the issue :) no more rattle sound. I'm cheap.
😆..... Good one . .
You must be a restaurant owner 😂
I'm going to give that a shot
"Actually it just satisfied on me"
Hopefully it took you to dinner first.
Erik Kovacs 😂😂😂😂😂😂😂😂😂
New merch: 'God, I hope she blows'
Yea... wth does that mean anyway??
Johnathan Waters think long and hard about it. 😀
@@Johnathan_Waters When a system is "satisfied" it refers to the temp control detecting the desired temp it's programmed/adjusted for. After the thermostat reaches set point, it opens phase to the liquid line solenoid (closing the valve) so the compressor can pump down and shut off.
Hey Mate, I'm a second generation refrigeration and air conditioning professional with almost 50 years' personal experience and I find your videos really interesting. Keep up the good work!
Great job! I am 3000 miles away. Here, that job would more than likely go out for bid to at least 3 contractors. You’d be dealing with a facilities manager or broker who has the job of making sure you do not make any money. He would take the bids and start calling working one bid against another. In the end, the guy on the truck would being doing as little as possible because his company told him he had 4 hours total to pick up the compressor and turn key the changeout. Some “woman” in the office screws up the quote and they will still want the same profit. An example is I saw a company do a nearly $18,000 30 ton compressor change out and did not even change the filter drier or the contractor. Techs in the field are told exactly what to do and how long they got to do the job. Some companies even tell the tech what roads to take to drive to the job. They have sophisticated GPS driver monitor systems that tell the office has fast you turn, if you slam on the brakes, where you are, where you been, and have a camera pointed at the driver. Mom and pop restaurants will not fix anything that is running, and when they do authorize a repair, the company needs a team of collectors working the phones trying to get paid. California, it must be different. Just about everything is brokered out here, one way or another. How you sell these job is a mystery to me. I bet HVAC companies are using your videos showing techs how easy it is! On large equipment facilities out here, in order to get customers and keep customers, either the salesman gave the job away, or, they send a saleswoman out to screw the customer, or, possibly they send the site contact guy to the Final Four Tournament or on a fishing trip. Everything is crooked, everybody wants something for nothing. It all flows downhill to the guy on the truck.
This tear down reminds me of Aussie50, who did a lot of tear downs of HVAC stuff. R.I.P. old friend.
Oh yea... I really miss him
I miss channels like his but with youtube recommendations being total garbage its impossible to find those small cool channels like that
He was great
RIP :((
Aw man, I remember his videos
Slow metal fatigue due to vibration. If you look at the metal break you'll see 'waves' as the crack grew and the steel stretched and then sudden a clean granular area when it finally failed. I imagine the compressor probably wasn't balanced properly and had a harmonic that was ultimately destructive for those brackets.
I came here to write the same thing and saw you already wrote it 3 months ago. lol.
I’m third on the list, 9 months late.
@@Sidicas Heh. Seems like you got Craigified!
superb analysis
The bracket likely broke due to vibration-induced metal fatigue. Ask the manufacturer.....it’s probably a known problem.
That's what I was thinking too. Once the small muffler tab one went maybe it caused the other to see vibrations at its resonant frequency. The breaks seem too be the same distance from the bends in both brackets as well so hopefully that design has improved in new models.
Joseph D too be or not to bee, that is the question.
My dad once fixed one of these by using a shop vac'd bowl and a hole saw on the crown, then an old can-opener to finish the cut. Replaced the strap and ran off a cut ring to fit in the top, braised it on with the slug. It'd be a hard call but you'd have been known as a miracle worker XD.
Prjndigo I once moved headstones but left bodies.
When your unsweating a line that your going to re sweat as soon as it’s ready to come off move the heat back onto the compressor in this case and pull the line 90% out let it back all the way in then out again a few times this cleans almost all of the silver off of it making it fit better. You also risk tearing the copper if your heat control isn’t great. I love watching the videos keep them coming
The black sludge is from the valves overheating. Lack of suction gas cooling
Yeah you are right with that I only hope that the compressor did not pump oil in to the sistem itself
Look at that valve's heat signs on those......
@@liviugabrielancutescu3644 the system is full of it it's circulating oil all the time. Drier catches most of it. A few drier change outs clean it up. That's what I learned over the years. The core type drier cleans a lot of junk out quickly but needs to be changed till the oil is clean again. I'm sure some of the dirt or solids get stuck to the bottom but if it don't get disturbed it's not going to get pumped out of compressor
@@royamberg9177 it's normal to pump just a small amount but that pipe if it was not kept there by the bracket the compressor probably was getting oil and pushing it
Possibly liquid slugging? Maybe caused by low superheat making the compressor pump liquid. The liquid doesn't cool off the compressor and overheats the oil and this happens. I'm not sure, trying figure it out.
Black sludge is from the compressor overheating check your superheat at the compressor If it's a Copeland compressor they want min 20F degree max 40F superheat at the compressor plus check your discharge temperature if it's at 250F oil starts to turn to acid.Make sure your condenser fan are working correctly.
The same guideline for L'Unite (Tecumseh) 20°C superheat max 40 deg
Black sludge can also be from aluminum wear. Aluminum oxide will look the same as burnt mineral oil.
Edit: that was definitely from overheating because the valve plate was discolored and it had carbon buildup from burning the oil.
I liked how you slightly heated the dryer replacement pipe just before doing the brazing on the joint. Reducing the heat sink effect of the pipe gives a way higher chance for a perfect joint. Great technique!
I was multi-craft electrician/mechanic in a paper/tissue mill and I did as you. No matter if it was a motor, gearbox, relay, contactor I would take it apart to see why it failed. I did it so much that my team mates nick named me "Tinkerbell" because I was always tinkering with something. I enjoyed the compressor tear down.
I used to love cruise control... Nowadays, I seldom see the highway, and when I do, I forget I have it. When I do use it, I'm surprised it still works. LOL
Nice to see the teardown on that compressor, this is the first video I've watched of a teardown. I had always wondered how they made electric compressors, but never really researched it. Seeing the internals here, it makes perfect sense to me, and just as I type this it dawned on me that if you turn that compressor on its side, it looks almost exactly like an air compressor.
I don't know why HVAC still surprises me like this, it's tried-and-true old-school technology... Maybe that's because many industries don't take the "if it ain't broke, don't fix it" attitude.
DashCamAndy need never forget you have highway, as long as you can see.
25:00 that's why we using at least four compressors in parallel connection Chris.
This was a very interesting compressor tear down. I never knew there were so many bits and pieces that interlinked to make the compressor do what it does. Problem-solving skills are absolutely phenomenal, and this was very interesting to watch.
Those crazy Santa annas will blow you away and then you drive by the windmills and see they are off and wonder. Nice job, looked like a relaxing day for a change.
The noise was probably from those sheared off brackets rattling in the bottom of the compressor shell, whatever, it wasn't right & the replacement of the compressor was the way to go.
I have learned a lot here. I will probably still call an HVAC tech to do compressor changes or charges, but I sure as hell soak and rinse down my compressors monthly and swap my air filters religiously now since watching this channel.
I never had time to open up a bad compressor. It's nice to see what the insides of those things looks like.
“Hope nothing blows up” when switching breaker on is so relatable 😂
I want this comment to be as fair and honest as possible!
Having the benefit of watching you work as an observer over your shoulder its unfair for me to be critical of your technique and industry best practices. I absolutely love the imperfections and your frustrations at times!!!!! It allows me to strive to be better and not be so hard on myself as well. Cheers!
alimuh007 and likewise when I screw up, I shall say to myself: this is something just like what alimuh would have done.
Had a scroll compressor on a Data server room unit that was making that noise, but cooling and running fine. I wanted to replace it before it broke but my service supervisor and manager said no. 6 months later someone else has taken over the contract and it went out. He said he felt it would have been best if I had replaced it in the spring like I wanted instead of middle of the summer. 🤷♂️
Had no idea why this video was recommended but find it oddly satisfying. Can remember when HVAC became a thing at the Vo-Tech schools. Never bothered to check into. Wish I had.
i have more than 10 years of experience in HVACR field, but you still teaching me lot of things, Best Wishes for you Sir From Pakistan
Others have touched on this, but I believe I can explain what you are seeing with the oil and carbon deposits.
Was this originally an R-22 system years ago, before the condensing unit was replaced with an R-404 unit? The reason I ask is that it looks like there is mineral or alkylbenzene oil mixed in with the POE oil. Mineral and alkylbenzene oils are good oils when used with CFC or HCFC refrigerants, but not so good in an HFC system. Also, mineral and AB oils will decompose into carbonaceous materials at lower temps than POE oils, but even so they still requires discharge temps above the manufacturer's specified maximum for the compressor (around 225°F-250°F for the Tecumseh AV series). I think that is the case here. The compressor discharge temp must be well over the manufacturer's rated maximum in order to have caused the discoloration on the valve plate and the carbon deposits on the pistons and valves, as well as the sludge in the oil. High discharge temps are caused by the usual things: high compression ratio (seen in systems running low evap temps), excessive superheat, excessive high side pressure (dirty condenser, overcharge), etc.
What you are calling "copper plating" on that bearing end plate isn't copper plating. That is actually a copper thrust surface. The entire weight of the rotating assembly rests on that thrust surface, so copper is used as the bearing material for the steel thrust surface of the crankshaft to ride upon. Copper plating should not occur in a dry, acid-free system. If the system contains moisture and/or acid, that needs to be addressed immediately.
Morning Chris it’s gonna be a great video I can tell already
Pity about the wind noise.
That small tab looks like it mated that "muffler?" Thing to the suction line thing. Once that snapped, the muffler thingy could vibrate... and that vibration probably caused that other little bar on the suction line thing to snap. I'm sure those two tabs made a bit of noise at the bottom but those two side units are sitting right next to the pistons and now have play... so they were probably making the most noise. Yeah it works but you know that vibration would have caused another break that would have been far more catastrophic. Good swap and thanks for the dissection. I love seeing the inside of motors. Makes the video awesome to me.
I'm just following your nomenclature but I'd guess that muffler is something to do with the oil or discharge line but I didn't see how it came out of the case. I don't see why there'd be a "muffler" on an electric driven motor but i haven't a clue.
I've always called them mufflers as well. I once dismantled a scrapped compressor (which still worked. The whole unit was scrapped due to rotted coils) and ran it with and without the mufflers. It was much louder without than it was with. It's surprising how loud it is period running outside of the steel housing pumping air. Of course, when it's still sealed in the hermetic housing it's much quieter either way.
@@Matt_Deluca good to know, I really didn't realize they'd have one. Though I'd wager vibration dampener might be closer to the description but again idk
Good Vid ! That oil in the Bottom of the compressor that ooks like 1 Thick oil and a Thinner oil is Exacly that. it is 2 Diferent oil types that Dont Completely mix. The thicker oil is the Mineral Oil and the other oil is either alka benzene or poe. old system and a few compressor changeouts = different oils in the compressor. Thats one of the Drawbacks of NOT being able to do oil changes on a Hermetic compressor after doing a compressor change out.
That white thingy was the sound that was heard when it was banging like crazy in its seat, just a matter of time before it got destroyed and spewed pieces all over the oil that plugged oil holes and the compressor got seized.
HVACR gives bringing work home a whole new meaning. Haha. Thanks for the great video and for tearing down the compressor.
Thanks for cutting open that compressor. It was really interesting since I have never seen one of these open.
Super interesting watching the teardown of the compressor. I knew roughly how they worked, but that let me put the parts to a.. face? I'm sure you know what I mean.
Wow that compressor sounds horrible and that wind was powerful excellent work and thanks for the awesome content stay safe and take care
Nice. That’s pretty interesting. Seems like the valve plate was overheating and maybe started breaking the oil down. I opened one recently because it sounded like rocks inside and it turned out to be a mounting spring broke and the whole assembly was bouncing off the shell.
Yeah i think somehow this one was hitting the case and or thr muffler was rattling .........
BEST VAC I'VE EVER ACHIEVED,126 MICRONS! 4 Yellow Jacket 10 cfm pumps,and two Welch pumps 18 cfm on liquid lines over 4 days!
The thing that made me most appreciate cruise control wasn't the 3+ hour drives for work trips or even the hourlong commute to one project, though I certainly did appreciate it for those. What really made me realize how nice it is was having a wheel speed sensor go out and disable my cruise control during the project with an hour commute each way. I'll never take it for granted again, haha
This is pure speculation on what broke the metal tab on the muffler and the metal strap for the suction inlet, if the vibration pads where bad the compressor might have vibrated itself until it broke. Great video too, I'm an HVAC/R and commercial kitchen tech, I love your videos just because I love seeing what other people are working on and doing, I like hearing your thoughts on things as well. Keep up the good work man.
TIL that 86°F is not hot…
Meanwhile I would only be living at the beach at that temperature.
Love your videos. Actual hvac content not just selling sponsored tools.
"So we are going to jump on the Roof and take a look at this compressor" In comes the Coffeegrinder
Brazing in that wind must have been a son-of-a-gun.
v8 fastback we cannot have nice breezes because we use wind for the wrong purpose.
If you have clients that have major contactor problems due to sand/dust getting in them, ask them if they want you to reroute the contactors into a Explosion-Proof box mounted on the outside of the compressor cabinet.
Explosion-Proof boxes are what's used in places that have lots of fine dust (that tends to go BOOM if the concentration is too high and there is a spark, like Bread Flour factories and Sugar Refineries). They're the next best thing to Hermetically Sealed and no sand or dust is going to get in them to ruin the contactor...
These boxes can also protect mechanical time clocks too...
Im pleased that you've taken apart one of those "hermetically sealed" compressors. Luckily we had cut out units back when I was earning my certification. Vibration was probably the issue here.
That fan is going crazy 10:30
HVAC School brought me here and I'm grateful for it.
Cool bud glad you came, did Bryan mention something recently or was it an old video and or article?
@@HVACRVIDEOS I'm actually transitioning into the trade and I've been listening to the podcast, I've watched more of your videos but I can't watch them at my current job but I can sneak in a podcast and I believe it was a older podcast where you guys were breaking down some basics and best PM practices
I love your videos when you cut something open and show us how it works
thanks for taking the time to cut it open, pretty interesting
I dont know shit about AC units etc. these videos are just interesting and fun to watch, but that compressor seems like it was like "nah, f* this, imma keep going....". Props to the compressor.
This was entertaining, since I've never seen an AC compressor from the inside.
It's pretty amazing how 85° in the desert isn't hot but 85° in the midwest specifically in Wisconsin is brutally HOT because of the insane HUMIDITY. Living next to all the Great Lakes is is nice but damn does it get humid. When it gets to 100° out here it feels like 140° and it's just wet and muggy like a swamp.
I heard that same sound in a roof top hvac unit & they haven’t replaced it yet. Still running strong.
A great video! Liked the compressor teardown! I used to cut open scroll compressors and would usually find the failure was from them binding due to wear from the pot metal parts wearing out ! There would be a large amount of metal shavings in the sump! They're very cheaply made! I personally prefer the turbo torch because the flame wraps around the pipe and the silfos flows better and you don't have to move that bulky torch around so much ! The turbo torch tip is so much lighter to! I 💯 percent agree with you that the whole unit should have been replaced! You as the company owner should have convinced restaurant that it would have been much less expensive in the long run! That was a perfect opportunity as it was still running! Liked that you used the heat dough on the service valve make sure to tell your techs about that! To few technicians are using the heat dough! It's some really good stuff unlke that worthless messy paste! A very though we'll make video !
8:43 priceless afterthoughts "and don't grab a hot flare nut" as a fella who's worked many career/contracting fields, been there done that! fingers, hands, arms, legs, stomach, back, NOSE(yeah) etc.
poooooo happens, more when distracted
For future tool buying thought.. i used all my career the D-Tech.. I now use the D-Tech Stratus... It is SOOOOOO worth the money... I found leaks with the status that i didnt find with the other..The tools with PPM reading are just that much more accurate..
Awesome! Thanks for my first look into the guts of a hermetically sealed compressor! And as far as Tecumseh goes, personally I've always had WAY better luck with their mower engines VS Briggs. But Idk if they even make small engines anymore. Seems like forever since I've seen one...
No they don't, they only sell parts for them anymore. Moved on to other things. We had a 90 GPM water pump with a briggs that blew a rod, took out the piston and hooked up a tecumseh to the briggs, ran it that way over a decade while the briggs didn't make it past summer #2.
@@leebarnes655 Lol doesn't surprise me. My uncle had a newer rider with a twin cylinder Briggs and one day there was a loud noise and the engine seized. I took it out and tore it down and there wasn't much but metal dust left to one of the con rods.
Just would like to chime in on a couple of the comments below,yes Chris is BRAZING NOT SOLDERING,SOLDERING IS USING A FILLER THAT MELTS BELOW 850 F,BRAZING IS ABOVE 850 F. Sil-phos 5 or 15 is liquidous around 1275 to 1400s,Safety Silv 45 or higher is around 1250 or so.Welding is a fusion process!Brazing is essentially using a similar or compatible filler and basically gluing the tube together!
Peter Smart so inductively-reasoning, a solder is neither a similar nor compatible material, does not 'glue' materials together, while brazing cannot backfill- think I got it now.
Oh and you might want to tell a welder never to weld cast iron together using nickel because of this new terminology.
I've welded cast for years,but if you actually know the process,the preheat and postheat,you are not actually welding cast iron,BRAZING repairs have been done on cast for years with great results,nickel melts and adheres to cast ,it is very compatable, and strong . It's more about the metallurgy and the process and who carries it out.Most people believe that welding is stronger than brazing,there are brake joints that have tested at over 80,000 psi and weld that only test at 70,000.
I had never seen the inside of a refrigeration compressor and this just amazed me. Very interesting
i want to vacuum police you, but you did it yourself lol. unlucky on that packing there, yes they always leak; which is why i like to put nylog on the valve caps during vacuum just to be on the safe side. pulled a 220-ton circuit down on a chiller to around 600 microns in a couple hours, took the whole weekend and on monday morning was down to 170. sometimes all we need is more time, which we usually don't have. great vid though, keep up the great work and thanks for all the teaching along the way! p.s. impacts rule
A Welding Tip - When using 45% or 56% silver " Dip your Rod " in the White Flux Constantly while welding it will make for a smoother and easier weld.
OcRefrigeration , Hvac & Electrical Video's. The 'Notorious DR WFC'.
Really enjoyed the teardown! I have cut a few different styles of compressors open in the past. I have not seen anything plastic inside one before, like the one you have.
Amazing it was still pumping. Great video, keep up the good work.
Great education on this situation. MADD props
When I go into large tools, and they ask me how the heck I have so many notes on a repair. I always tell 'em that I played a game of "where's waldo" inside the tool. And that's how I end up finding odd things like snapped metal parts, leaking oil, dry grease on railings, and rusted bearings. Always fun to look at it, repair, and get it going again. But sometimes I wonder.. how the heck did it break in the first place. #firstworldproblems lol
Raiden which is when I silently take the writeup an hilight the word "large" where it says 'tool'
Oh yes fryday night compressor replacement I have done lots of them
That was interesting to see inside the compressor. Hope it doesn't blow, cool tee-shirt. I was thinking maybe it was a caniblet pin or part of a muffler bearing. 🤪
Great to see the inside of a compressor. Thanks for this info.
Hi Chris, nice to see u
Hello
That noise that the compressor was making is more likely the result of the compressor knocking against its housing, I don't believe that it was caused by the loose parts at the bottom of the housing.
At 19:08, you can see an abrasion on top of the muffler which suggests that significant movement has been occurring. The part that caused the abrasion looks to be what the bracket stops from moving and based of the position of the parts as shown, the movement has been purely rotational.
This suggests to me that the bracket on the muffler was there to counter the rotational forces of the compressor and motor which, because of how physics work (the compressor will try to spin in the opposite direction that the motor spins in), means that the bracket had a fairly constant load on it for a significant portion of its life.
What we see at 19:08 is probably the biggest clue that exists to what caused the bracket to fail. But whatever the reason is, there is probably a good chance that it all comes down to a design flaw or manufacturing defect.
RandomJerry the biggest design flaw being: can't operate to specs while pumping sludge to/from an OIL sump.
The noise probably came from that plastic thing and the other muffler looking can rattling loose inside the compressor.
There may be already some fine contaminants released from the plastic wearing down, hopefully caught in the dryer, but if the plastic was allowed to wear all the way to crumbling the failure could have been much more catastrophic.
Nice of the customer to allow you to replace it while it's still cooling. I might not have made the same decision if it was my equipment and it was working properly
But it would have failed at the worst possible time ! Murphy’s law you know .
you should look up fred dibnah that guy could tie a ladder
Ohhh hell Fred was absolutely mental and incredible.
The old videos of him putting up scaffolding and ladders on the chimneys is frankly terrifying, balls of steel that man
watched his videos a few years ago. Absolutely amazing :)
Fred definately a man of steel! Taking down those chimneys by himself, a brick at a time. I liked in one where he got the photographer up on the scaffold, and then the bloke said "how in the world do I get down from here now?"
HVAC video - and Fred pops up. Wasn't expecting that :)
Thanks for ur time
CheaterPlug, Best creative tool i've seen in a long while! thanks for sharing that one!
Nice!! Love to see the inner workings of compressors. Good job.
First time viewer, Also gained you a sub.. My guess on this compressor is that the muffler bracket broke off.. Got stuck on the bottom and broke that intake bracket loose.. At that point, the intake was bouncing around.. And that was the ROCK noise you heard.. Amazed the intake isn't beat all to hell though.. Anyhow, awesome video! Loved it!
I think your right !!
She's thrown a rod! Running on one cylinder.
Or not! Wonder if there are different types of oil in there that don't mix? Some old stuff had alkybenzine oil, not sure if it mixes with POE.
heavydiesel can't be 100% sure without sending the oil out for chemical analysis.
I love the way you work
Great video! Excellent break down on taking the compressor apart. 👍
Looks like the right fan motor is having some friction, probably going bad soon.
he did say in the video that he did want to replace the fan motor but didnt because of covid to cut costs
I was thinking the same thing.
Fan motors are pretty cheap. Just the labour to replace them. The right fan can be harder to find if damaged.
@@VenturiLife a few bucks can add up pretty fast, but in his recent stream, he was called in to that same place in this video for this unit and one of the fans has gone bad, though this is 4 months after he shot this video (but in hindsight it probably might have been a better idea to have changed it)
HVACR VIDEOS Look at the ends of the plastic manifold where it feeds the suction inputs of the cylinders. It has clear signs of being hit by the valves!!
Maby that compressor was experiencing flooded starts. It would explains how that little manifold bracket broke when their was an explosion inside the shell. Idk. That was a weird one. Great video
Derek Mc high amperage on the new compressor too, so the problem didn't simply go away with a part swap. Sounds like an automotive-curse is overachieving far outside of its jurisdiction.
I live where the average humidity is 70% so it's a lot different from your area. And when it gets to above 85 degrees I lose my ability to function. I couldn't even fathom the temperatures you work in, thank God we only have 3 or 4 days a year when it gets above 90.
I will discuss this on my livestream on TH-cam this evening 9/28/20 @ 5:PM (pacific time) come on over and check it out, and if you can’t make it to the live no worries it will post as a normal video afterwards th-cam.com/video/lN1JzYbER68/w-d-xo.html
I live where the maximum humidity during a downpour is 95%.
@@HighestRank When it rains humidity is at 100%. It's raining cause the clouds can't accept anymore water because they are fully saturated.
Good morning thanks for the video love how you cut the compressor apart i also love to find out what happened to it!!
Hey Chris,
Great video !!!!
I’m still a bit new to this Refrigeration trade
And I noticed at 10:38 you said you need to cut the suction drier off and just replace it with a pipe,
Why did you have to replace it with a pipe ?
Because before the suction dryer appeared, it was just a pipe. The universe without a pipe in the time line exists in a separate paradox. I should put together a list of reversal-related videos for binging.
Oh Wow That’s Interesting...
Thank You For The Help
👍
The new compressor probably had it built in. Just a guess though.
I've seen noisy comp run for years. Cold suction we just be let it run till it die.
As i just finished hvac school, i was lookin at my heating and cool essentials book as i was watching this to learn more. so with this aid, it might seem to be the restrainer from the valve plate (as the suction and discharge valve reeds face the pistons) with the second part looking like a piece that held the discharge muffler in place. maybe the constant pistons' vibrations wore it down? pretty late to this vid
Loved that tear down, not something most of us get to see...
Thanks bud
I bet brazing in that wind was fun. Cool tear down! I’m the same way, I always wanna take stuff apart to see what broke and/or how it works and is put together.
Teardown was amazing would love to see more about how the guts of a compressor work how the stuff flows where...and I gather different types of them work differently. One of the best yet!
Is the whole thing full of refrigerant even the motor sitting in it or is it like a sealed system inside a second enclosure?
Yes, the entire compressor, including motor, has refrigerant flowing through it.
the second piece of metal is an id tag thats snapped off why this happened is violent motor shakes
Im like "holy crap 107°"... then you mention the video was shot back in june haha.
Someone in some warehouse somewhere may have lost a compressor or a pallet of compressors off of their forklift, Oops. Ron W4BIN
I see you got your cars back from your daughter, they look in great shape!!
I had this problem a few years ago,, The compressor sounded like broken glass,,, The problem was caused by a contractor switching off the power to the building for a few days.. The compressor cooled down, liquid refrigerant accumulated,, when power was restored it tried to start up with all that incomprehensible liquid,, and smashed.. All good fun.