This video is brought to you by Sportland Quality, Integrity and tradition. All right. I Am pulling drawers out of this unit right now because we have an early morning start and we've got two new evaporator coils for this guy. So uh, if anybody caught that have two temperature controllers, they actually were backordered on one without a temp control.

So we're going to have to take this out of one of them and make it work because this system only runs with one control. Um, so yeah, that's where we're at. We're going to, uh, get all these drawers pulled out, get the drawer boxes pulled out, recover the gas, and get going on this. It's nice and yummy in here today, but uh, we got the covers pulled off.

Um I'm going to have to take all the wiring I'm just going to undo the wiring and use all this wiring for the new coil that way. I Don't have to worry about cutting wires because the coil that I'm putting here has the temp control and all that. and so it's wired to be a master coil basically. Um, we're currently recovering the gas out of the unit and we're going to get started here in just a minute.

All right. Well, we got the coils cut out. but check this out. This guy is pouring oil out this whole coil.

That's probably why this guy wasn't working I Thought it was a bad TXV It's probably just flooded with oil now. long story, but the cold rail up top used to be controlled from a compressor on the roof. that went bad. and my theory is is that it logged oil in the cold.

Rail And because the customers replacing this box, what we did was, we connected it to the condensing unit which it originally was. Long story as to why we cut it out and I'm thinking that the cold rail dumped all the oil in here because I don't think there's anything wrong with that compressor, but we're going to have to. We'll clean everything up and cut it. and then we'll have to, uh, blast this guy with nitrogen to try to get any oil out of it.

Okay, you want to do one side of the other? Uh yeah. one side at a time. Do liquid first, liquid first. Okay, go for it.

Just give it a blast and then stop. Nothing. Go ahead. I Hav't open.

Oh okay. go ahead. Just Let It Go On here. Okay, nothing.

go and do the suin. Oh Oh yeah. almost got me. Almost got me who.

that's nasty. Okay, let me get get in there. That's gross kind of a problem. Del Field's notorious for their connections they make.

They all came apart so we had to do some identifying. So we've got a blue piece of tape on that wire that's coming over to this side. So that's the switched leg for this coil because this is the master. It has a temp control coming out of the temp control goes to the solenoid for this coil and then it comes over on that blue taped wire for this solenoid and then the reds are hot all the time for the fan motors.

All right. So this is typically how we do the when you can't access the back of the box is we just cut them uh Sage the new coil and then slide them on and braze them. So I've got a wet towel protecting the wires I'm going to get that brazed up and the Will's over here working on this one right now. Okay, check for Meats Looks good right there.

Looks good right there. It's kind of a pain, but got it? get H right now. Okie Dokie! We got a new Uh Sporin Capt catchall filter dryer. We're running a vacuum on this guy right now.

We turned on power, coils are all assembled. uh, they're working correctly. Both solenoids are turning on and off via the temp control, which which is what we want. They have the wire running back behind, Got the guards cleaned up as best as possible and we're going to start assembling this box and go from there.

Hopefully that oil didn't cause any more damage I Don't know if it's stuck anywhere else. who knows? not much I can do about it. You know they I told him to change this box I mean this thing's so bad when I come back here and I push it seeps water right here like the whole box is flooded underneath. so whenever I push on it, water seeps out of it.

Drawer boxes are all broken. I Didn't want to change these coils but it had a bad well. I Thought it had a bad power head but it was actually saturated or logged with oil and I'm glad that I trusted my gut and didn't try to change the power head because I went went through all the changing the power head to find out it didn't work. You know, always trust your gut with these reaching coils.

If they're corroded, change the coil. Don't play games. All right. Evacuation done.

System is running at the moment. It's actually 404. All right, not looking bad. 21 degree evaporator 102 saturation on the condenser.

It's about 70ish de in here right now. Return air is 51, one coils 37 one coils 40 the discharge A We'll give it some time, make sure that we're working. We are looking really good. So I shut off the top section just so we can see it run with just the bottom.

Um, temperatures 2628 is discharged for both coils and return air is at 40. I mean is looking really good So you see these old coils like look at the Copper is completely pitted out all inside. That's why you got to like look at this stuff before you jump into repairs because trying to change a power head or maybe even sweat on the new? TXV onto that copper would be a problem. So always you know, look at the big picture and trust your good.

All right we are just turned back on and it's coming down to Temp So it came up to Uh 34 or it came down to 34 shut off temp came up to 41, then it turned back on. So it's ranging like it's supposed to be so they're going to notice a huge difference now. so we are good to go. We're going to give them the keys and tell them to keep an eye on it.

Like I said, they're still replacing this box but this will get them some more time. I Came through a rainstorm to get here and look at my window. Everything is covered in sand. We we just haven't a big Sandstorm out here today.

It's crazy all right now you know I didn't get footage the first time I went out but initially what happened was I got a service call on the reach and not working. When I got there the whole unit was down and what I found was in the master coil. There was a bad temperature controller so I changed the temperature controller. then the system started running but I noticed that on the left side evaporator coil which was is the slave coil.

that coil basically wasn't given a good TD it it had like a 2 degree differential from Supply to return. The other side had like a 8 n degree differential or something like that. I don't remember the exact numbers but I know that the left side had something. So my theory was was that the power head on the TXV had was in the process of completely failing.

It wasn't completely shut down, but it was just barely letting refrigerant by. But I looked at the coils and I was like these coils are completely disintegrated. they're rotted out. I'm not going to try to twist off a power head because I'm going to cause a refrigerant leak.

The system didn't seem to be low on refrigerant at the time. Okay, so this particular customer had already ordered a new refrigerator, but it's been taking a while for them to build it cuz it's like a custom unit and they're not going to have it I guess anytime soon I have no idea they bought it I you know, whatever. I I don't have anything to do with them ordering the refrigerators. So in the meantime they were like they need a solution.

so I told him I was like we need to change the evaporat coils I hate to do that cuz it was a lot of money. but I'm like I'm not going to go in there and try to change that valve. try to change the power head because I'm going to cause a bigger problem. Mind you, the top section was working 100% And that's the the spot they use the most so you know the idea of them replacing the Box some people may say Well then why didn't you just try to change the power head? If it died, it died, they were still using the top section.

the top section was still functioning 100% capacity. it was just the left side of the bottom you know, kind of giving them issues and stuff and actually it was the whole bottom. but then the left side became the real problem after I changed the temp control. So in that situation I went to the customer and I just said look, the only way I'm going to do anything to this box is if you let me change both of the evaporator coils cuz they're both completely rotted out and then I got that surprise when I when I cut the coil out I'm like oh it was full of oil.

Then it kind of came back to me What I think happened So in the past. uh this particular restaurant it gets really really hot. It's in the Southern California desert, Uh, gets to 120 out there and and their kitchen runs 85 90 in the summertime. Okay, it's just a horrible design.

They used to have really big cooking appliances in there that you know put off a lot of heat. The exhaust system was never designed for that much heat, it just had a hard time. This equipment always struggled. So a long time ago, uh, over 10 years ago we separated the top section from the bottom because the top used to be a problem all the time and we remoted the condenser for the top section up to the refrigeration rack on the roof.

Okay, and it ran that way for years until I Don't know. 6 months ago, 5 months ago, something like that they lost a compressor. The compressor grounded out more than likely cuz the oil got stuck downstairs. Okay, but the compressor grounded out and uh, the Um solution.

They had already ordered a new box at that time so I was like, well, instead of selling you guys a whole new compressor condens unit Up on the Roof why don't you just let me put them back together, just get you going temporarily I Was trying to do them a favor. so I reconnected the cold rail to the condensing unit downstairs. so that way it's a completely self-contained unit. Again, Okay, and then obviously they started having problems with the bottom section.

So what I think happened was when we reconnected it, there must have been oil in the the cold rail section and it logged inside the bottom evaporators and it caused our current problem. Okay, so they still got issues, right? I I Don't doubt that there's still oil in the, you know, who knows, maybe the compressor that's running right now has too much oil in it? I Don't know I Don't know what the, problem is, but for now we got them two new coils. The system's operating, the customer's happy, and supposedly they're going to be getting a new box. but I don't know when? I Have no idea.

You know, sometimes when we're working in this stuff, you know you got to come up with Solutions and I can't stress it enough. Trust your gut. Okay, when I say trust your gut, there has to be experience behind those educated guesses and you know that you're going to make that make you think like, hey in this situation I know that that evaporator coil was going to be a problem if I tried to change that TXV or tried to unscrew the power head. More than likely we could have gotten away with the power head, but I was just too fragile.

Everything in there was just too messed up and I wasn't going to play those games. Okay, so you know we changed those and sure enough, you know something happened now. I Thought it was going to be refrigerant leaks, but no, it was tons of oil. Okay, so that's a problem and oil logged coils are really, really difficult to diagnose.

They really are okay. Um, this one. I didn't That didn't even cross my mind, but it kind of makes sense in hindsight looking back at it. But how you know? like I wouldn't have even thought it would have been oil logged, right? But it makes sense now that in hindsight, you start thinking about it and everything.

So regardless, we got the customer operational. It's now been probably 3 weeks since I did this repair. They're still happy. Everything's still working great.

We've been out there doing other repairs on other equipment. They still haven't gotten a new unit, but hey, you know it is what it is. We do the best that we can with the tools and the equipment that we have. I Really appreciate you guys making it to the end of the video.

Thank you so very much! Lots of great new footage coming up. Uh, Spoiler alert I Did the install on my home system. My home system is up and running operational. Um guys I Have to tell you something.

I'm just tiny Spoiler alert My new system is slightly oversized guys. My two ton system that I installed in my house just just ever so slightly oversized. I Came home today. it's 99 outside and I have my system set at 76 and it was satisfied.

That's not a good sign. I mean it should be running all the time, right? because we sized it so I mean when I say it's oversized? that's kind of a joke. It's it's perfect right? But we technically could have gotten away because uh, it shouldn't be shutting off at design temperature. You know, at 76 set point of my house it should be running right? So this just kind of blows my mind.

You know, going from an oversized 4 ton doing a load on the house and this also just shows you that uh um, you know, load calculation software does have fudge factor in it right? So that's kind of crazy. So don't tell anybody. wait for the the the the full release video. only a few of you are going to be watching to the end of this video anyways, so stay tuned.

We got all kinds of footage that I'll be releasing in the next couple weeks on my house install and how fun that was! It was a oh my gosh it was insane. but I'm going off and rambling. You guys got the bonus footage Again, keep it to yourselves and uh, let everybody body else wait until they see the uh, the the full video and everything I really do appreciate you making it to the end of the video. If you're interested in supporting the channel, there's a couple ways, but the easiest way is simply watch the videos from beginning to end.

That really is okay. Um, next you can support the channel via True Tech Tools.com you go to True Tech Tools.com You want to purchase some tools you can use my offer code. Big picture. One word.

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