This video is brought to you by spore'ln quality, integrity and tradition. We have a call on a little cart. That's not working! This is a delfield cart, they're, saying the top and the bottom, but check this out. Look up here.

This is swollen. It's swollen up and click back here this. This is slightly swollen up, but this is severely swollen up. It's pushed up somehow it's like it's frozen and then I haven't done anything yet, but when I pulled the back of the box off look at this, this looks like glycol because they they fill these things with glycol.

It's like it's been running down the blackboard. So what is going on here? This is very interesting. I don't really understand what happened here. You can't fit the pans in there anymore, because this is swelling out.

It's the most bizarre thing ever so they don't fit in there anymore, so top in the bottom. We running and we're running low pressures, it's currently about 75 degrees in this kitchen, so our condensing temperaments should be about 20 to 25 degrees above that, but we're only running a 70 degree condensing tent. So we have low head pressure and low suction pressure, and you guys probably can't hear, but it sounds like we're feeding vapour through the expansion valve. I can just hear it up here, so we're gon na do a leak test on this guy, put some nitrogen in it and see if we can figure out where this leak is up.

So I went ahead and recovered the charge, filled it up with nitrogen and just put a tracer amount of four or four in there. We've got our pressures up to 211, which is a little bit high and we're just doing a leak check, and I have a hunch that there's a leak in the cold rail, the other things going berserk all around the coal bro. It's all the way totally leaking up there. Look at that, it's totally leaking in the cold rail, so that must have something to do with the back.

There's. No, it's weird! So I suspected a leak in the top. I went ahead and cut the top section out of the picture welded on service ports and we're doing a pressure test, so I pressure tested it up somewhere 400 and some change and we've already dropped seven psi and six minutes I'm gon na. Let it keep going just for the heck of it.

Oh yeah. We got a leak up in the top section for sure. So that's a problem. So I'm back at my shop now and I'm gon na figure out what happened with this box.

We got a new box, they replaced it, but I want to know what caused these things to swell up and pop. So they're completely pushed up yeah, it's a trip and it has a refrigerant leak. Remember in the cold rail, so I'm gon na. I have a hunch here, but let me do some investigation and pull the back of the box apart, we're gon na start by a draining the glycol out.

I originally thought there was no glycol left but there's fluid in there, so we're gon na pull that stuff out. Here's the back of the box; okay, nothing crazy! Here! Originally, I was worried because there was like glycol stains right here and I was like. Maybe someone put a screw through, but no and my conclusion was that's not what happened there, but the back of this box were all had pink glycol. There's like some residual left for here, but it's hard.

But I had cleaned all the pink glycol off and we know that it had a refrigerant leak up in the top okay, because I had pressurized it there's barely any nitrogen left because it leaked everything out yeah I had a quite a bit of nitrogen. I had left in there, okay, so I'm gon na drain. This glycol out of here should be full of glycol. I have a hunch that it's full of water and that the water froze and lifted this thing up and smashed it the refrigerant lines and caused a leak okay.

So it has a little fill port right here. I'm gon na pop this off, and I bet you water is gon na come for now see what we can do. Actually it's just pressure, let's see if I can get fluid to come out of there, it's full of it. Okay, so that's not gon na allow it to drain, but I know when I'm moving the box around that I can hear it sloshing around so taking off this little cap, didn't let it I believe, that's just an overflow again.

This is all theory. So what I'm gon na do is I'm gon na try to start disassembling this box? It looks like maybe I can do these pop rivets and if I do these pop rivets, maybe this top shell will pull off and then we can get a better idea. What's going on so I've never disassembled! One of these. I don't think they're meant to be disassembled, but there was a bunch of popper if it's all along the side and same thing on this side over here.

I just ground them down real, quick, the heads of them and then broke them free, and there was a couple popper that's back here. It seems to me like this top section. It's just sitting there. It seems to me, like this piece will come right off the base top of the top, so someone try to do much, try to pry up on it and see if I can get it to pop off glue.

Yeah that's coming off, so it's just gon na take some time up, crying, probably get some better gloves on. I don't know what I've got the top off, I'm just trying to figure out how again I have a hunch that water's in here, because we have a leak up in here to figure out how to solve one of my thoughts too, because I saw a bunch Of pink glycol right in this area that maybe someone put a screw through the back of the box and Pierce the glycol. You know like the the pan area, but that's not the case. This hole.

I've got the foam pulled back, there's no marks down there and there's no glycol in there. Nothing pink same thing here: here's another one right here, nothing in there, so that okay, dodged a bullet there, because I thought maybe someone messed up and put too long of a screw in there, not the case. So we still haven't figured out where why the glycol leaked out now again, this whole area right here like right around this screw, had pink glycol running all the way down, and I can't figure it out so we'll get it I'm gon na keep going with it. I had another hunch too, and I think it's kind of being disproven that this top piece like wasn't sealed again, I don't know if there's water in here or not, but what? What else would let, if it's glycol it shouldn't, freeze and something clearly made this expand up? It froze so much with with it has to be ice, and I bet you when we, when we end up opening this up, because I'm gon na find where the leak is too.

My theory is, is that we're gon na have smashed refrigerant lines from ice. If this thing had glycol in it, because that's what it's supposed to add, it's supposed to have glycol around the refrigerant lines to help make it even cooling process. So I still don't understand so. I'm gon na try some other things we're gon na see.

If there's any leaks, we're gon na try moving and tipping this thing to see if we get like all leek, you know again, I was thinking that maybe like while the restaurant was waiting for the parts one time they were icing it down, which is a very Common practice they'll do an ice bath up here and I was thinking. Maybe water, like you, know, diluted the glycol or something, but I don't know again, I'm intrigued to know where this glycol or why this thing froze and smashed the lines so we'll get to it. So far, everything that has come out of there has just been pink glycol. I thought it would be diluted down all right, so my next test is to see if, when I flipped it over, if any glycol would leak out the other side, then that might prove my theory that it filled up with water.

Other than that I don't know what else could cause a leak will continue to deconstruct this thing. But let me pull up on this, so there's no leaking glycol when it's upside down, so I don't think there's any way that that could have been diluted with water. So that debunks, my theory, they're very interesting, so there's no leaking anything. So this thing is sealed.

This unit actually has a really nice construction to it. This is the actual cold rail unit, stainless steel. It's got two drain plugs refrigerant lines, I'm assuming this is overflow, and this is for your temperature controller, but it's encapsulated in this piece which I was able to pull it off. There's no glycol stains in here.

This right here is, I believe, just from you pulling it out in the overflow there's like a little bit of pink, but my theory was that somehow this thing was full of water, but I can't see any leaks, whether it potentially be water. Yet so I'm gon na go ahead and pull this drain plug. There's a little bit of glycol right here, because I had already popped this loose in this drain plug. So I'm gon na carry it over and drain it out on that pot and that bucket right there that certainly doesn't look deleted with water.

Looks like it's just pure glycol. That foam is just from me. Moving the box around the interesting very interesting many years. I did this kind of stuff without using ear protection.

You learn better, so I've got your butt that block off the sound completely safety glasses. Of course, we're gon na cut this bottom off all right. So this is how these lines they sit in here and they're. Just held by these brackets and they just sit together.

I don't see anything yet. I will say that right here I made a little nick when I was cutting with the grinder. So that's not. That was not already here.

I pulled up the lines over here and I'm gon na try to get them out, so we can investigate to see where the actual refrigerant leak is. It's interesting, though, filled this guy up with nitrogen and nothing was like PIA now I'm pissing out, but there's a couple spots that looked a little suspect to me. So I just spray some cell bubbles - and this was one right here - this is the big blue - need to take care. I'm gon na finish, spraying the rest of it.

If I see anything else, I did, I didn't put a chaser of refrigerant in here. So that's. Why I'm just using so bubbles or I'd use my electronic? It's interesting yeah, it's very interesting, there's just like a little micro, something or other. This is the pan chiller unit.

I pulled these lines out, they were secured. I bent them out of the way this is twisted because I had to kind of bend them out. I didn't want to break this. I have this pressurized with nitrogen.

The leak is right over here. You can see it's very difficult, but you can see where it's been rubbing very lightly now. This right here is from my grinder, but this is not. You can tell that this has been rubbing out.

It's old. You can even tell on this one. Where see this is my grinder, but look next to it. You can tell that's been rubbing out next to it too, and then you can go in all the corners and see you could just see like little.

Okay - here I know - that's probably hard to see, but you can tell it's been rubbing there too, but anyways. The refrigerant leak is right here, ironically, see where I nicked it with a grinder. That's not leaking just shows you that this is just like. Maybe a bad piece of copper or something that's interesting, and then you come over here where I nicked it really good with the grinder and it's not leaking either interesting, but yeah.

There's really not much to these things I mean it looks like they took a solid piece of 3/8 pushed it through this little fitting right here and then braised it the threads and then braised the fitting here. This is the temp control. Sensing bulb dip tube and it's sealed on the other end, so it won't allow any glycol or anything to get into it. So that's why it's imperative that when you put these sensing bulbs in for the whether it be mechanical or digital controls, it's got a push.

All the way to the top so that way gets a proper. You know a surface contact to get proper temp control. This is a glycol overflow. What I thought it was so there's I I've always wondered because there's a cap on there and I've taken them off and they always just like drip drip, and I always wondered if it would ever leak out all the glycol.

But there's no way this thing had 2 and a half gallons. If this is a 5 gallon bucket and it's you know, looks like about two and a half gallons worth so yeah very interesting, but at least we figured it out all right. This one started out as a service call on a little reach-in cooler that wasn't working the complaint was that it wasn't working on the top or the bottom. So right, when I got there, I pulled it into the back of the restaurant plugged it in and immediately noticed that the unit was low on charge.

I immediately found or picked up the trace of a leak using my electronic leak detector as the detect select. I picked up a trace around the refrigerant lines going to the pan, chiller section. Okay, so I went ahead and cut out the rest of the video because there really wasn't anything else. I did leak check the rest of the system to Dovan to that, and I've done this before with other boxes.

I've never had this happen on this particular brand, but I've had it happen on other manufacturers, where we had a leak in the cold rail up top. So I know the procedure so essentially we cut the cold rail out of the picture and then isolate it and pressure test it and then do a time to pressure test and that's actually. If, when you get a hold of the manufacturer, they want you, they have a specific criteria. They want you to follow all these different steps documenting with pictures and all that good stuff.

Now this particular box happen to be out of warranty, so it wasn't covered under warranty to the best of my knowledge. Again, I don't. I just remember the first email that I sent. They said, no, it's not under warranty anymore.

Now the restaurant buys these refrigerators themselves. So I don't know what happened after this point. I don't know if someone ended up warranty and something who knows, but regardless we got the the call to go, install the new one and when I sent someone out there to install the new - and I told him, bring the old one back to the shop. I want to dissect the unit, and so that's why I went through it went ahead and I had some theories.

You know I had all these different ideas in my head, like what was going on and initially you know, I saw that glycol in the back of the box. I still don't understand what the pink stuff was. I'm almost wondering if it was like just the color of the marker, because you noticed that was writing on the back of the box, where one of the text had written something you know, I still don't understand why there was what I thought to be pink glycol In the back of the box, because there was no leaks - and there was just probably just under two and a half gallons of glycol in that unit. After all, so I did confirm that we had a refrigerant leak, took it back to the shop, cut it open and found the leak, and it was on a spot where it looked like it had just been rubbing ever so slightly, but it also looked like.

Maybe it was just some bad copper. It was a very interesting one. I've never dissected a refrigerator like this, where I actually took it apart and cut it open, but you know it. Whenever we run into these problems, we always just say: oh yeah, it's got a leak in the pan chiller and then it just gets changed to out and thrown away.

You know so it's kind of interesting to pull this thing apart. I was actually very impressed with the construction of that cold rail, solid, stainless steel. Sealed I mean you know it's pretty: decent nice, good insulation, two and a half inches of insulation. It looked like I mean that was a pretty nice-looking box.

The way they had it constructed now, I would say that the cold rail, the whole assembly being able to grind off those pop rivets seemed a little silly, but once I got those off like the top became loose, but then I had to work to get it All apart and everything so and just thought this was an interesting one. Let me know what you guys think down in the comments. I've been promoting this for a little while, but I've got a new YouTube channel that I'm starting there's gon na be a link in the show notes. I plan to start it.

The first of the year it's gon na be called HVAC are tools you may or may not be able to search it in YouTube. I don't know if it's popular enough to come up in the search results yet, but first like the first line of text inside the show notes of this video will be a link to that channel. I'd really appreciate a subscription on that channel I'll, be posting new videos where I just kind of go over tools. I didn't want to cloud this channel with tool reviews also in the show notes of this.

Video will be links to the tools that I use, because I always get those questions and yeah that's pretty much. It uh live streams, Monday evenings 5:00 p.m. Pacific time, where I answer questions and address things that come up from these videos so tune in okay other than that, we'll catch you guys on the next one.