All right we're gon na pull this uh guy apart and figure out what failed inside the compressor and uh. I just cut the top off and i can't help but be reminded of the scene in hannibal when uh pulls the top of the dude's head off. This video is brought to you by sportlin quality, integrity and tradition. We are working on a heat pump.

It's a 15 ton system. This second stage is flat on gas. The second stage has a cracked reversing valve right here, but i never verified that there wasn't potential compressor damage for the reversing valve, so i should have done that. But i didn't i came back out today and before i brought all my stuff, we were going to change the reversing valve, but before i brought all my stuff on the roof, i just wanted to bump this compressor just to see how it sounds.

That compressor is bad. There's a vibration in that and that's what cracked, the reversing valve dang it man. First time i came out. I should have just pushed in that contactor.

I just didn't want to for some reason but yeah, and it almost sounds like it's dry on oil too, which is a concern, because this line set. No joke goes down like five stories, which would make me think that we might have a oil log evaporator which would suck it's just a whole disaster of a issue here now: okay, we are replacing this compressor today and this reversing valve. Now we went ahead and pulled the top off to make our life easy, but we got to be careful because this is not supported very well, so we can't be leaning on this. In fact, we're going to put a screw in here to hold it up, but this way we can get back in there and get to the back of the reversing valve and do everything that we need to do.

We brought the compressor up yesterday, got an easy up up here, just in case, and we're gon na have to go, get a bunch of other tools, but we're just getting started on this guy. These trips, to bring all of our stuff up, are really starting to kill us and there's no electric over there by the ladder. So that's why i'm using a rope and not a winch or i would have went and bought a winch but all right. Well, we pretty much got everything i think we need up here, we'll have to get refrigerant when we go to charge and scale, but all right we're going to go ahead and start on this guy.

It was a tight fit, but i found it easier to weasel. My way into here, through that all the wires and everything i didn't have a ladder, so i couldn't jump over the top, but i was able to get in here so now. I can sand everything up and disassemble it accordingly. I need your help.

A little bit gently give a little tug on this line right here, just just gently, it might be a little flame out. So don't be surprised! No, no i'll tell you this little tug. Now, this way, okay, probably going to have you push down on that? A little bit not a lot just uh. If i move your hand a little bit more that there you go only nothing drips on you i'll, tell you, when okay get ready, okay, keep it down; okay, we're gon na! Do the next one, which is this one.

Okay, just light pressure, not yet okay, we're getting there. Okay, keep it down, hold it for a sec. Okay, let's go ahead and unbreak this one. You should probably be able to.

Let it go. Is it tacky, let it let it touch now: try, okay cool! So, let's do the other one real, quick on there. You go, keep it down for a sec; okay, probably let it go okay. Now i just need to do this.

One okay: this line on the compressor when i heat it up you're just gon na - have to pull it straight out. It's gon na be a little tight on that one and then the top is gon na be easy. Careful man, that's gon na, be really hot. Try not to let that touch here.

It's good! Let it cool! I don't know if you guys can see it, but right here is where it cracked right. There's a big old crack all right. It's all on sweat, we're gon na start, disassembling the compressor um. I'm actually gon na try to take this accumulator out and see if there's oil stuck in it.

It's a very common thing on accumulators, especially on dirty air conditioning systems. To me it felt like it had a bunch of liquid in it. So, let's test and see - maybe not no a little bit but not bad, no it! I thought it was worse than that, but it's just a tiny bit there's nothing wrong with that tiny amount of oil, okay, cool! I wanted to make sure the compressor didn't run out of oil. We still haven't tested the compressor yet either to see how much oil it has but we'll deal with that later.

So i did a little brazing outside of these two guys so really in here. We've got to make those two connections this connection and then we're going to put the compressor in here and do all that. Okay, i can't see the bottom. So what we're gon na do? I need you to look and tell me if it's blowing blown all the way around a little bit more, you have a little spot, you getting it careful! You need more solder, just get it to pull into the fitting, though okay pass me the torch.

Okay, look: how fast, decent, okay, let's go and get that discharge line. Okay, just like that hold it right! There buddy hold on good enough, get it you're. Looking for the color change as we're cooling it, okay, we should be able to let it go all right. Everything's braised in i'm just kind of cleaning everything off, but you can see how that uh, the wet rag putty really protects the valve because you can see where the heat stopped.

You know super cool, the valve's, not overheated the putty's, not overheated everything's good, so we're just inspecting everything. I still got a little bit more of the putty to clean off, and then i got to figure out how to get out of here. I got in like through weaseling in through there, so it's gon na be tight. All right.

We got a big mess in here. We went ahead since we had the top off. I cleaned the condenser from the inside out made sure got into the split condenser made sure it was clean, so we kind of got a mess, but we're done laying down in the unit anymore, so we should be okay, we've still got a zip tie up wire In the compressor reversing valves in over there a little twisted, but it's okay, it's hooked up, everything's brazed. In now we got to come over here and we're going to change the liquid line.

Filter dryer, i have a bigger dryer. I have a new sight glass and i have a ball valve to put after it. So that way, there's a ball valve already right here. So if we have two ball valves, then we could theoretically change the dryer without ever having to recover the whole charge or pump the system down.

So all right, we're still kind of wrapping a few things up. I just installed the spoiling catch. All uh went with a high capacity 30 cubic inch, reversible heat pump. Dryer um haven't braised it in yet just kind of fitting everything.

Right now got a new sight, glass and then got the shut off valve. I was talking about so now. We have a shut off valve right back in there and then we have one here. So we can isolate the dryer and replace the dryer if we ever needed to again i like to go with bigger dryers whenever possible.

I am going to have to do something because they don't have very good support here and this one already the old one just sits. There is dangling now we got a heavier one, so we're going to have to come up with a unistrut, something or other to support these guys. So so so so so so so running the vacuum pump uh and we just started it so we're still at 17. 000 microns it's going to take a little while i have still the gas ballast open so but yeah we're just starting to clean up mode everything's installed over here we're just down to doing cleanup dryers all installed, and you know it's it's interesting like how well that Wet rack protects the dryers like it did, a great job, all ins, you know sight glasses in so we got the spoiling catch-all dryer again.

This is a 30 cubic inch. We got the sporland sea all side glass and then we got a ball valve. So we got a ball valve here, like i said earlier ball valve there, so now we can replace it. I still got to come up with a way to support this stuff, because i don't like the wobble i'll have to come up with i'll, have to get another piece of unistrut and run it from that side to this side and then have a bracket that steps It up or something but i'll figure that out after the fact, we're still waiting for the vacuum to pull down it's doing good so far, so so all right, so we pulled down and we're in decay right now.

It's slowly rising. I think it's like 800 microns right now, so just ever so slightly rising, but i think we're gon na be okay. So what i'm doing is i went ahead and removed the vacuum hoses. I have uh high flow schrader core depressors here, so i open them up hooked up my gauges and i'm pulling evacuation on my gauges.

So that way, when i depress the schrader, there's no air in the system, basically and then we're gon na go and charge the system, so i'm gon na, let that run for a few minutes. I got ta wire in all these condenser fan motors that i disconnected so i'm going to do that right now, start it up. Compressor sounds good, just charging it it's way low on refrigerant. Right now, look at my saturation temperature 35 degrees so start dumping.

Some gas in there, so i've already put four pounds from a half empty cylinder already and then we've got 12 on this. I didn't know how much this system took. I literally quoted it at 50 pounds just because i don't know how much it's going to take. So all right, our unit is running it's about 95 degrees outside right.

Now we're running a clear sight, glass! So here's how i did it. I added gas until the side glass cleared and then now we're using sub cooling in their charging chart. So their charging chart right now we have a 102 degree liquid line, temp, okay and we have a 405 degree liquid pressure. So we find 102 right here which is about right, where this mark is okay, let's see if we can get that to focus there, we go, and then we find our 405 psi, which is about right here.

We follow it up and we're still technically a little bit above the curve. I know it's kind of hard for her to see it, but when you're above the black line, then you add refrigerant, so we're going to let it stabilize out a little bit because i'm a little unsure about my sub cooling, creeping up so high um, but yeah. We're looking good so far, we are right on the curve. Now that black dot is us.

I know the camera's not focusing as good as it could be, but yeah we're right on their curve uh. So all together we added 23, 8 plus four. So i said about 28 pounds of gas is what one circuit on this unit takes. So it's quite a bit of gas all right, um we're going to start buttoning things up.

I still have a return visit because i'm going to make a stand for those liquid lines come back. Probably tomorrow knock that out and then uh yeah we're just gon na start taking all of our stuff down. We already took some down all right. We returned this morning.

I did a little more labeling. I wrote it in a paint marker 28 pounds, six ounces, 410as, the total refrigerant charge. I also uh came back with some post bases and uh unistrut and we secured the liquid lines and you can see the way that i uh piped in the dryer. So you could be sitting on this beam and see the sight glass right there.

Okay, but yeah. This guy's, nice and secured their roofer can get some pads, usually they like to put pads underneath these. It's not secured down to the roof, but it is secured to the pipes. It's just there to kind of hold the support, because i felt like there wasn't enough support for this right here, still not a fan of the way they ran the thermostat wires, but that's a problem for another day.

Now. What i did was i left these long. Okay, i don't have the hardware to do so, but one could very easily run another strut across and support the suction lines too, which i think would be a really good idea. What happens on these units is? We have to walk across these beams oftentimes when you're up on top of them and i'd hate for someone to trip and step on this suction line and snap it off.

So that's why i think it'd be great. If someone put a strut across there again, i don't have the cush clamps or the angles to do the strut. I do have another piece but um again, that'll be something for another day. So uh i just turned the unit back on.

I'm just waiting for the unit to uh turn back on, so i can make sure everything's operational still yeah and that's it customer's happy. I went ahead and rinsed off the roof, a little bit too just kind of clean up my messes, but all is well all right. We're gon na pull this uh guy apart and figure out what failed inside the compressor and uh. I just cut the top off and i can't help but be reminded of the scene in hannibal when uh pulls the top of the dude's head off.

It's not out of oil. It has quite a bit, but that oil is severely contaminated. It's not burnt, though i mean this: wasn't a grounded, compressor, moved it up to my car and cut a slit down the side, as you guys can see, and then cut the whole base off now. Um these bolts just fell out.

These are not supposed to be uh loose, so those might have something to do with what happened to this bad boy, so we're going to keep on going with it all right. You can see we're trying not to get too dirty. The bolts had come loose. It looks like, and they were sitting there agitating until they f finally stripped out, i'm still trying to figure out how that happened.

That's insane um, that's crazy, so these bolts right here used to go down there and then the shaft came down right here. Sat in the bottom of that, i'm glad this thing has oil in it, though, because i was worried about the new compressor that i put in potentially having oil problems, but it doesn't look like that was the issue looked like there was plenty of oil in here. Just mechanical failure, but i'm trying to figure out why it's a really interesting mechanical failure - huh everything's straight with the windings stator, all right, interesting. Okay, i'm still trying to figure out what happened here, but obviously the lower bearing the bolts came out.

Why? I don't know so this lower, bearing is severely damaged too, because you can see how the screw holes are completely oblong. It's really bizarre. I mean i can't think of anything that would cause yeah, that's interesting unless, unless that was caused by the vibration, maybe let's pull apart this scroll assembly and see if there's damage in here. Maybe this started vibrating and then the whole compressor took itself apart and loosened those bolts and then broke the reversing valve.

So we're going to open up the scroll assembly. Well, i pulled the scroll assembly apart. There's absolutely no damage nothing wrong. There's! Hardly! I don't even think i see any copper plating in this thing.

That's a first um yeah. Everything is straight no damage at all. The only issue is down here on this guy right here. This is the only issue.

The other thing, too, is right on the top. I can't remember if this is supposed to be oblonged. I cannot remember - and let me know in the comments if i don't think this is supposed to be oblonged like that, but it doesn't seem to have damage. I don't know it's interesting.

I kind of i don't see any signs of damage besides the fact that it's oblong huh that's kind of bizarre but yeah, that's it. I mean there's not really much to see about this guy, the scroll assembly's fine. Doesn't i mean the oil looks bad, but the scroll assembly itself doesn't look like it. Was overheating um just this bearing and look at that? So i wonder if the screws just came loose over time.

It's very interesting and the thing just started vibrating like crazy, because this was not bolted down so uh. You know just shaking all right. Well, this one's solved, uh, i'm just gon na call this a random mechanical failure. I, unless someone says something in the comments, but i don't see signs of flood back um, it's full of oil.

Everything looks good. Just looks like a plain old mechanical failure. Uh this compressor was a 2014. okay.

We're gon na call this one done. There were quite a few mistakes that i made in this, but it's okay, everybody makes mistakes, it's normal, okay. I certainly could have braced the bottom of that gantry that i created with the unistrut okay, the first time um as i got the compressor to the top. Actually, even before it uh the gantry started to flex on the bottom t where it went to the support brackets.

You know that that kept it standing up tall basically, and if you notice, i went ahead and dealt with it, because i didn't feel that anything was unsafe. It wasn't coming apart. You can definitely see the flex when i, when i got the compressor to the top, and i slid it over on the trolley and then laid it down. You could see like how the whole unit flexed, but it's okay, all right, um.

I was as safe as possible uh. You know i'm sure that uh someone will scream at me for something that i did all right, but i realized and then uh the next day, okay, so that that gantry lift happened the day before we actually did the compressor replacement. We we put all that stuff up. There left the gantry up, there came back the next day, changed the compressor and then, as we uh were finished up and we were lowering stuff down.

If you look, i had support braces running across at an angle which solved all the problems in the world. Okay, um. I made that gantry out of unistrut you guys. I'm certainly can do that yourselves, but there's some things that i learned along the way and some research that i was doing before i did it that uh you have to be very careful about the load limits of what you're putting on there.

Now that compressor weighed 70 just under 75 pounds, so it might have been like 78, but it was right around 75 pounds um. So i didn't overload anything on that. Um uh, the the carabiners that i was using, were actually rock climbing carabiners, so they were legit. Not i didn't go cheap on that stuff um.

The trolley that i was using was a legit unistrut branded trolley uh. It was not the stainless steel, it was just the steel one. So i really my my understanding and my research told me that my load, my weakest component in that system, was actually the trolley and i believe, if i remember right, it could hold 450 pounds i think of of weight on it. So we were good on that.

Um yeah, but just be very careful. Okay, i'm not gon na give a breakdown as to the parts that i use or where i got everything, because that's just too much of a liability, but you guys can do the research just look up. Unistrut go to unistruts! Actual website they have all kinds of information on there um i got a pulley system off of amazon. It held up nice and good uh.

It basically had four pulleys on it or it was a four to. I think it was a four to one. I think i think, is what it was, but it really reduced the load. If i had to guess there was probably 15 pounds of force, i had to put pulling to get that 70 pound compressor up, so it was doing a really good job.

You know this. One i was a little concerned in the past. I probably would have roped that by hand uh, but i'm just i don't know, i'm sick of my back hurting for weeks after i get done doing stuff like this, and i can remember some horrible jobs that i did where at the end of the job. You know my arms are shaking because i shouldn't have lifted something or something like that.

You know i'm over that. Okay, as i get older, i'm 37 now as i get older, i'm just, i don't want to be broken for the rest of my life and there's already some things that i regret. My hearing is already starting to go in. It's questionable whether or not it's from work or not, but my hearing is getting worse.

I've gotten more things that i can count in my eyes. I've talked about this before so, but i just try to be as safe as possible. Okay and again, i know there's room for improvement on everything that i do. Okay.

So as we went further with the job i had another person there with me, i was trying to think smart. So, as i was in the unit, you know unsweating everything i tried to have everything in there as i was getting out after we put the new compressor in, i went ahead and cleaned the condenser because i didn't want to have to get back in there um. You know just trying to be as productive as possible. Every time we went downstairs, this was a.

We had to go up four flights of stairs and that 35 37 foot ladder climb whatever it was, it was right in there uh, you know it was. It was a chore getting everything onto the roof, so we were trying to be as efficient as possible um, but you know just just trying to be careful and be safe, putting everything together and just be as productive as possible. Coming back in the end and putting that piece of unistrut to support the dryers was really important, because that prevents a problem from happening in the future, where a dryer snaps off or something okay. As far as the ball valves um, i there was already an existing ball valve, like i showed you guys in the video, so i just put another one.

So now we can turn off the condensing unit shut. The ball valves recover that tiny bit of charge. That's in the dryer, replace the dryer and put it back now. Why didn't i use a flare dryer? Okay, normally i'm a big fan of flares, but in this situation um i worry a little bit more.

I don't deal with a lot of residential installations. Actually, i don't deal with any okay and i don't do flares very often on 410a now, i'm certainly confident in my ability to do a flare, dryer uh, especially even with 410a, but okay, here's the thing is: i have to think that there's going to be other People up on this roof, it's a long haul, it's a pain in the butt, and this unit takes a lot of refrigerant. It wasn't worth the gamble for me to have a flare system on that with other people's hands. Basically touching that you know, as many of you guys know, flares on 410a systems, you need to use a special flare.

You need to make sure that you're torquing things properly like legit, not with just my hand, torque wrench. You need to use an actual legit torque wrench, and there was just too many variables at play. There uh also the unit uh potentially has vibration issues. You know i mean in the future and things like that, so i'd just rather not have a weak point on the roof.

Now i use flares all the time, as you guys see them in my videos on my refrigeration systems, and you know i don't have any problems with them, but this one i just had a gut feeling like hey, let's sweat, that dryer and don't use a flare And so i did it: okay, just to eliminate any potential problems, don't want to create any issues for the customer. You know these units they're starting to have a lot of problems with them. Uh they've got four units up on the roof and they're starting to have a lot of issues with them. So that's why i put that ball valve in i.

I basically can guarantee you. This is not going to be my last repair on this unit. These things are very prone to evaporator, leaks and different things like that, so we will be back, i'm sure, okay, um. I really really appreciate you guys making it to the end of the video.

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We just kind of talk about the week and you know have some fun all right again. Thank you guys so very much and we will catch you on the next one.