This video is brought to you by spore'ln quality, integrity and tradition. I guess you don't have to have a coupling. You could just set the seal tight-fitting right next to the EMT connector. All right.

We have a service call on a walking cooler that it's not working properly. Its customer says it's about 44 degrees in here, and that is accurate. First thing I see is ice on the suction line. Yep, it's ice, not nice and good, and this this is the second coil.

So there's two coils of this system: it's, like maybe a refrigerant charge, issue all right. This is my condensing unit right here and I just got to shut it down because we got a defrost, the coils before you go any further, but condense fan motors are running compressors running, so that's a plus we'll go ahead and shut it down and then look At the defrost hawk and then get downstairs and get a defrosted all right, the unit does go into defrost, but it takes a very long time to pump down. Judging by the look of the back of that evaporator coil, I can tell you that the about clothes are in really bad shape in deteriorating, so that's clock power to underneath bolts from 1 to n. Then we're going to check from four to n.

We get 0 volts, which is the refrigeration circuit and then we're gon na check from 3 to N and we get 200 named volts. So the clock itself is going into defrost, but it was taken a very long time to pump down. I went ahead and put service gauges on it and did a quick pump down test again. Copeland doesn't recommend a pump down test but put service gauges on it front, seat of the suction service valve and the unit's struggled so pull down to zero.

It just sat there and ran and ran and ran, and it just wouldn't pull down to zero. So I finally just shut it off myself. It looks like we've got a weak suction valve at the minimum or a weak suction Reed, I should say, add a minimum on this thing, but we got to get a defrost it and go from there. I think technically, this is evaporator 2, but yeah.

It's fully iced up, so I got ta get a defrosted four. We can go any further. I've shown this a ton, but when I defrost these evaporators, I pull the fan motors out completely. So that way I can just go to town and I still don't get water all over the floor.

I just go nice and slow, wait for the drain to fill up and let it drain it's not a race all right. I use my wand. I've shown this a bunch of times love this one, get it from Lowe's in the garden section, but anyways I used to shower, and then I just regulate it and go nice and slow get it defrosted. I just do it all from here.

Just go a little bit get the surface, then go a little bit deeper and deeper, and then the stuff will just actually fall off the back. It's got to be careful not to break bottles a little bit out of time. All right. I had my first bit of ice fall off and I noticed that there was a lot of lint on the ice, so I'm gon na give you guys a shot of what it looks behind here.

This coil is completely plugged up like solid solid, so I'm gon na go ahead and keep defrosting it, but yeah, that's more. The likely the causative me and I stuff this evaporator is just trash. Look at how the fins are just coming apart. So we're just doing our best to get the surface stuff off, so we can breathe and we're gon na talk to you about replacing this equipment all right.

I got it all back assembled and running now we're gon na jump on the other evaporator coil, which is over here, and I just shut this one off now. I've been letting that they're both on individual breakers. So I've been running this one, the entire time with the condensing it off to get it to defrost, so it's almost defrosted but we're still gon na pull it apart, give it a cleaning and make sure there's no more ice. So it's really not even that.

It's almost defrosted on the inside, but there's a little bit on the outside. We check this up. I guess you don't have to have a coupling. You could just set the seal type fitting right next to the EMT connect check, some people's kids right.

Alright. So this one is not as dirty and this one is right next to the door. So what that means is is that someone came and clean these coils and only cleaned one of them, because the one by the door should be dirtier. So someone was being lazy.

Is what that man well yeah? This coil is trash too, so I'm gon na give it a wrench from the backside. It's all defrosted doesn't even look like it's gon na need cleaner, really, like the other one did then we'll start it up, and hopefully everything else works all right. It is starting to rain on me right now. It's dripping all over me.

So we're not gon na. Be spending a bunch of time on this, I'm gon na make sure that the sight glass is clear. Oh boy, are we running low suction pressure right now? Oh you know what this thing has a Johnson control a 19 temp control. So I wonder if it's calling right now, no, I should be calling.

This is an R 22. Oh it's in defrost I was starting to panic hold on. I had put it in to defrost a minute ago. I got ta pull this panel.

There we go. I popped it out a defrost. We have suction pressures, you can see it's pouring rain on there and I want to make sure the sight glass is clear and then we're gon na get out of here. Okay, I'm gon na do a pump down test real quick because I did bring my heat producing device.

We're gon na check the liquid level, I'm waiting for this guy to actually pump down and satisfy. But one thing I got ta say man. The field piece gauge is a really cool feature is the fact that you don't have to worry about him getting wet at all. They are awesome for that reason, but this thing is not very promising right now, because it is not pumping down no bueno there.

We go took a while, but yeah this thing's definitely got a weak compressor. It's not sounding very good either, but all right receiver level was 3/4 or a little bit above 3/4. I am absolutely soaking wet. We've got like a crazy downpour coming through right now.

So it's just like lightened up, but it started pouring a minute ago, but all right, I want to wrap this stuff up, get off the roof all right. It is slowly coming down to temp in here. Let's see 42 degrees, it's gon na be a little while, but it's getting there. We are back and we're recovering the refrigerant existing from the old unit and we're gon na go ahead and replace this equipment.

So recovery machines running we're gon na. Let it go and just start taking everything apart, two new coils and we got a condensing unit ready to be lifted on the roof. We got a crane coming here soon, so a little bit at a time. We just got the line set well up on the roof braised in nitrogen rig setup, getting ready to go downstairs and braise.

We got people hanging the coils and doing the drain lines and all that so we're gon na get braising downstairs and then trying to beat some rain looks like it's getting ready to rain. So we got the easy up just in case one of the things about these have intelligent, evaporator coils. So that's the smart, evaporator coils with the electronic valves and all the fancy stuff with the intelligent. You have the option of making it like a full communicating system.

Like a beacon - or you can do just a dumb down condensing unit like this one, this is just a standard condensing unit with no communication between the top and the bottom. With that said, the intelligent evaporator has a built-in defrost clock and it has a built-in time delay. The time delay has to come out. The defrost clock is useless, so this is just a standard, condensing unit that comes pre-installed with a time delay and a defrost clock.

They have to be taken out and the intelligent, evaporator controls. Everything has been a long day, just hooked up the vacuum pump just got done, braised and I'll show you guys the coils here in a minute. What I do is, I typically start and I'll pull on both sides at first, so I'm pulling on the receiver and I'm pulling on the suction line with the Schrader removed, and then once I see it drop quite a bit I'll, usually close one of them off Or something like that, we'll see right now, I'm running with the gas balanced open, so we're just going to get it to pull an evacuation I've pretty much peeled off. Most of my guys, I sent two of them.

Home already still have two here left with me, but I'm gon na be peeling them off too, because essentially we're just doing a vacuum and hoping that nothing bad happens all right. So here's our evaporator for one side did. We use an existing line says so. This is already going in.

It was already here. You know we're just utilizing what we had. We had to run a comm line up there and then here's our other coil. We haven't turned it on yet because we're still evacuating everything so once we get it evacuated, we'll turn it on and do the programming hope there's no problems.

Okay, so we just powered it up. I'm gon na go into here enter the expert pin configure. Yes, it's discovering so it's supposed to look for the other evaporator, which we've got another one over there yeah it's configuring right now to evaporators phone. So this is the first startup freezer cooler, 1a evaporator one or the other evaporator should be cooler.

One B select primary evaporator cooler, one hey the one, I'm working on condensing unit wired, no, the United States and cific Standard Time. Daylight savings. I don't think it is. I don't know it's really not that bad to set these things.

20. It's weird it doesn't. Let you go past you actually in march. Today's date is the 18th and it is 244 p.m.

defrost as air defrost. Timed refrigerant is 448. A box 10:35 two units configured start system. Yes, evaporator fan motor should be starting up, we're good, alright.

What I did a few minutes ago was, I went ahead in front seated the king valve on the receiver and added as much gas. The system would take, which was 11 pounds and the reason why I did that is so on startup. Hopefully it doesn't short cycle. So at this point the only thing keeping the system off is that king valve, so I'm going to open it up and we should turn on and hopefully not short cycle and then I'll add refrigerant as needed, so suction should be rising.

Hopefully the compressors going in the right direction. Yep, I tested the rotation phase rotation with my meter before. So that's why I just turned it on blindly. Normally I'd be all ready to shut it down real, quick, alright! So now we're going to continue to charge the unit talking with the factory they want me to put in the max charge in this unit, which is 20 pounds any time Heat crap just tells you that's the easiest way to do.

It is just put in the max charge, so you can see. I already wrote it all over the unit. So alright, I'm gon na finish charging this up. It is already 34 degrees in here down to temp.

That's awesome, so I'm actually gon na come to a follow up, probably tomorrow, just to verify the defrost everything's working like it should be so, but they're good for now we're good to go okay, so we had a service call on a walk-in cooler that wasn't working Properly and when I went out there, it was totally iced up, like you guys, saw the reason why I was iced up. There was a lot of things going on. First off the coil was plugged solid. At least the one coil was okay, but then, once I got a defrosted and got it cleaned, I showed you guys how deteriorated that coil was too alright.

There was a second coil. The second coil was not as dirty. It was dirty, but that one was deteriorating also, and then the compressor did not sound good and it had a hard time pumping down. So I went ahead and talked to the customer and the customer chose to go ahead and replace this equipment.

This was an old r22 system and they wanted to go ahead and upgrade it so they sent out some new equipment. We installed it for him to evaporators in a condenser. We used the existing line set. It was not you know ideal.

I don't like using the existing line sets a lot of times when I do walk-in replacements for this particular customer. I change the line sets, but this one was gon na be very difficult to do. The walk-in itself was exterior to the building and it was just gon na be a nightmare to change it, so we decided to go ahead and go with the existing line set. It's not ideal, but you know it is what it is.

You got to deal with. It sometimes didn't really run into too many problems. This is the first time I've done an intelligent with multiple evaporator coils. So this one had two evap sand.

We had to run the communication line, there's a few things. They want you to do to be careful about running that communication line. You want, you want to use shielded cable, you wan na, you know, install the shielded, cable correctly, only land one end of the shield on the ground. The other end you just cut off and you leave open what else.

What else was there? With that thing? I did learn a hard lesson actually, the last time I did one of these intelligent, and that was that you do not power up the evaporator coils, while you're doing the evacuation or the nitrogen pressure test or anything. You know if you want to do a nitrogen purge. You leave them powered down because the electronic expansion valves in these actually come open and then once you power them up, they actually close, and then you have to turn the coils on and get them into cooling mode to get them to open. So it's just like a whole thing.

So, whenever you're doing these installs, I've learned that you you just hook up the evaporator like it is you don't power them up and you can still do a nitro purge and all that good stuff? Okay, very important to with these intelligent coils anything with the electronic expansion valves. I mean you really should do it anytime, but it's very important to braise with nitrogen on these things, because these electronic expansion valves I've been hearing a lot of problems that people have been complaining about. The valves not working correctly knock on wood cross. My fingers, I have not had any problems with these valves.

I attribute it to the fact that I braised with nitrogen every single time and there's nothing getting stuck in them, but hey. Maybe I could be wrong. Maybe these valves are faulty but I've yet to have a problem with any of the electronic valves on the qrc, coils or the intelligence so cross. My fingers - I probably just shot myself in the head with that one but yeah it is what it is yeah that was pretty much it.

I you know, I really don't get to show a lot of footage when I do installs, because I don't show my employees on camera and obviously we had four guys here. You know everybody moving around and work and there really wasn't time to show the actual install. So I apologize, but you guys got to see the end result. You know I think it turned out.

Ok, of course you know I would love to do things better. I'd love to run a new line set. You know, there's there's all kinds of goofy stuff that I really don't care for with that, but you know it is what it is right. You just got to do what you got to do.

Sometimes you just got to deal with it. How many times do I got ta say deal with it or do what you got to do, but I really appreciate you guys making it to the end. Do me a favor leave me some feedback down in the comments. Okay, I really really would like to see you know.

What are you guys as thoughts? Should I have done something differently? Do you think that we could you know, let me know, I'm always looking for feedback, I'm always curious. What you guys have to say keep in mind. I do live streams, Monday evenings 5:00 p.m. Pacific time, where I usually discuss these videos answer questions that kind of stuff.

I do it on YouTube, so hopefully you guys can come check that out next week. All right, we will catch you guys on the next one.