I'm over here leak testing this guy and I forgot to tighten the road a lot gasket on the freakin. I'm wondering why I'm leaking this video is brought to you by sport'ln quality, integrity and tradition. We have a walk-in freezer service call today and say that it's high in temp. I can tell that there's no frost on the coil, it's dripping.

The temp control does not have a display back there. Sooo at this point, I'm gon na double check that switch and then we are gon na jump onto the roof. Well, we have a master, built, refrigeration, rack kind of a crappy design, but believe my walk-in freezer compressors right there. Let's see, that's the sign of anything else, and so this condenser is nice and dirty.

I believe system B yeah, that's my walk-in freezer negative 10. So this isn't a good sign. I open it up. It looks like it might have been in defrost and my breakers tripped.

It's always scary when you have a trip breaker on a walk-in freezer. What they're doing they tie in the ice machine condensers into this rack and there's no electrical communication, so the ice machine condensers need to be running if the ice machines are on. So I went downstairs turned off the ice machines and I'm going to shut down this entire rack. So I can troubleshoot.

Okay, remember a tripped breaker! You have to turn it off first before you can reset it all right. At this point, we're gon na open up the rack. Take a look inside look for any direct shorts on the compressor or anything like that because it looked like it might have been in defrost we're gon na investigate the defrost circuit, and then it looks like defrost termination is unhooked, possibly don't know. Why we'll have to look into that? That's just sitting there, I'm assuming that's for the walk-in freezer, it's hard to say it looks like maybe the beer walk-in has a defrost termination, but that one's hooked up because there's an axe.

So I'm thinking that this - I don't know, that's an awfully big wire to go into that. Oh no, you know what looks like there's a defrost termination unhooked right there. That would make more sense that this would go to this one, because it fits the length wise and then this went to that looks like someone's just clipping defrost terminations. But the crappy thing is: is that you never want to hook those up unless you know what happened so, even though it's disconnected I'm not just gon na hook it up to walk away so we're gon na finish diagnosing.

We know that the defrost termination is not hooked up, so you know we'll just add that to our list of things that need to be fixed, we're gon na, do it's start by checking three-phase power into the rack. 2:09 come away so we have three-phase power coming into the rack. Next thing you do is we're going to check three-phase power coming into the breaker 209 ten 2:09. So we've got three phase power coming into the breaker, I'm going to switch us over to toan we're gon na check for shorts to ground coming out of the breaker; nothing, nothing, nothing! Now we're going to go to the contactor going in nothing, nothing! Nothing! Now we're going to go out of the contactor line, one nothing line, two, nothing line, three, nothing! So we have no direct shorts to ground so far going into the compressor.

Now, let's go ahead and test direct shorts to ground at the time clock. Nothing again. We have good continuity, so no direct shorts to ground up here, we're gon na investigate the compressor and then we'll go downstairs. Alright, I'm about to go downstairs, but I just kind of want to look at a few things down here and I notice a few red dead giveaways look down here.

There's oil everywhere and move this out. It looks like we got a rub through look at all that oil on my finger, so that's not good the compressor itself, my goodness, gracious! Look at the overheating. Look at the stickers, this bad boys, hating life right now coming back here. Look at that! That's nice! But look down that there's some oil all over that to back in here.

This thing is not like in life right now, there's a lot of stuff and then check this out. Look what I noticed we have this head pressure, control valve someone's clipped the tip on it. Get you a better image that someone has clipped the power head so that head pressure control valve doesn't do anything anymore. I've had some history with this walk-in freezer, but I can't remember if I noted that head pressure control valve being clipped or not.

I know that uh I when I first took over this story. There was a lot of problems with this overheat issues. Someone had disconnected the thermostat for the compressor, all kinds of different things, but but yeah this thing's got a messy situation going on, but still we're gon na start downstairs investigate everything down there. It's like Pandora's Box, like there's no chase nipple here, but it doesn't look like there's any shorts, but you got ta fix that I was tripping.

I was worried that this low pressure control was disconnected because I see this well right here, but it's not there. Just wiring it in series with this compressor thermostat the discharge line. Thermistor here is wired in series through the dual pressure control. So alright, so I get down to the evaporator coil and there's a bunch of ice in here fan motors, all spin, the you know the drain.

Pin it's just the drain! Pan, though, and it's like half the drain, pan it's weird, so we might have a plugged up drain or something it's hard to say. But I did see this look right here. That wire is zip tied to the fan motor bracket in a way that it might rub out so we're gon na open that up, but yeah. It's interesting.

It's only iced up in the front where the drain pan heaters are not up I'll move that bag. This is full of ice, so it looks like the drains been leaking. Maybe we got a plugged up train but again, plugged up drain doesn't necessarily mean an electrical short, so I pulled the zip tie. There's a little nick right there.

I can't tell if it's rubbed through or not, but it um looks like I can see copper, so I'm gon na dig into it a little bit more and see if that's a short or not kind of feels like there's a nick right here too, from where It shorted it's kind of a pain in the bile, but the first step is to slowly let the water drain out of the drain pan what is actually water? It's got a ways to go and then once that drains out I'll have to dump the pan. A few times I'll start getting the ice out, so I'm slowly I broke it drain. What was in there kind of makes me think. It's plugged up cut my finger, but look back in here.

It's like drain pans, pull plastic plastic and there's a whole bunch more. Oh there's the problem, of course it's how this will go. This thing is teed in with other drains and it's plugged up with chunks of crap. Oh, what a mess man all right, so we've got.

This is the other side. This is their walk-in cooler and we've got multiple drains connected, so that's the walk-in freezer. Coming from over there. When I go down to where it comes to the floor drain, it won't budge when I blow from there and then, when I blow into this, it just backs up into this other walk-in cooler drain.

So, in order to properly do this by myself, I need to make some fittings that blank these off and then I can blast from here and hopefully clear the line, but for now I've actually got to stop, because this is gon na. Take me some time and I need to get the freezer running, so we're going to finish with the electrical short and ignore this for the time being, it's really hard to ignore this, because when I blew from in the walk-in cooler on the other side of that Wall, it just filled up the drain pan in here ker and see. This is the kind of stuff that's frustrating, because I haven't even this, isn't what I can't like. I highly doubt this ice or this water was serviced.

Well, you know what I'm saying like it was the electrical short we need to figure out where the short is. In the meantime, though, I'm seen a lot of life cheat wires, see that that not that's interesting, so we're gon na take all that stuff up, but I'm gon na fire this guy up, I turned the power switch off downstairs. So, let's see what happens here, compressors running he's going in to defrost. I can hear it so it's going into pump down compressor.

It sounds like we just pumped down. I think I think I heard the contactor kick ow. Oh No breaker trips! Here, that's not good! Why did the breaker trip man? Hopefully this doesn't turn out to be a bad compressor? Okay, here's what we're gon na do. I'm gon na disconnect the compressor out the terminal block fire it up again and say: fat trips man.

It is not my lucky day we got continuity to ground, why it didn't show up over at the compressor contactor. I don't know man, this sucks, all right, Wan back, I'm gon na have to change this compressor. I already picked it up. Took me.

I've been gone about three hours compress. It was about 50 miles away, and then you know all that stuff, but anyways picked up. The compressor got the recovery machine up here. I'm gon na hook it up.

But before I recover all the gas I'm gon na. Do a quick leak check on that oily spa there and I will be because I don't have a head pressure control valve, I'm going to be cutting the head pressure controlled out of the system completely temporarily. Just because I don't want it to be a leak point, because that could be a leak point to and remember. I said that someone had clipped the head on it and I don't know why.

I don't know if it failed or what and we are set up to recover. I've already purged it over here. I've already zeroed out my scale on here. This is zero.

There we go so my scale readouts there. So I know how much gas I recover. Putting open up my tank there's already refrigerant in there I'm pushing in through the vapor port to try to make it go faster, all right, let's go ahead and zero it again all right. There we go.

It start it's in recovery mode. I'm gon na go ahead and start getting compressor, sanded up ready to go pulled over here; pressure control, all that good stuff. So these it's uh nice outside. It's probably about sixty degrees right now this here in a little while so separate everything.

This is my about 40 men like grab my comeback, recovered somewhere around 10 house. It's interesting because the refrigerant doesn't smell burn. They must adjust internally shorting. I'm gon na try to get everything ready before I cut the compressor open.

So that way, Moisture is getting there watch out and recited that played out right here. So I got the compressor out and I've got to figure out piping, because the dryer is going to be a little different. The head pressure control valve needs to come out. I'm slowly cutting some stuff out and check this out.

This thing flamed out man, there's a ton of oil stuck in the liquid line. I already poured out a bunch so yeah there's an oil issue here somewhere. So the entire time I'm pulling this head pressure control valve out. There's oil coming out of this condenser everywhere out of the receiver out of everything, so we're gon na give this guy a little blast.

Let's see what we can get out of it! Okay! Well, I thought thought we were going to get a ton of stuff out of there, but I guess not all right, so I'm sweeping with nitrogen right now not always perfect. When I try trying to bein lazy and not getting my roads like tip out inspect both of those joints, real quick looks good. Let's good, that's good baby steps, we got the compressor kind of in braised in. I know that I cut out the head pressure control valve temporarily and I need to reroute the liquid line.

The sight, glass and dryer is going to go where it is and stead of that up in that position, because there was a big old oil trap there. There's full of oil, so we're gon na eliminate that it's not going to be as convenient for looking at the sight glass, but it's okay, all right! Let's see if we can weld this guy on the nitrogen again should be flowing all the way downstairs. I've got the power on to the system, so the liquid line, solenoid valve downstairs is energized and we're blowing nitrogens one last braze joint and I want to cool the site boss. So it doesn't overheat and if I didn't screw up, we should be done braising all right.

So we've still got to support this. Somehow I got to put a bracket right here, something like that. We'll do something, but our dtc valve is repipe to the dryer. I did that because I didn't like the big trap that was going down, because that dryer trap was full of oil, so I eliminated that trap from the picture.

So you know we'll clean everything up, straighten everything up. I'm gon na get a vacuum going on this bad boy. First, I'm over here leak testing this guy and I forgot to tighten the road a lot gasket on the freakin. I'm wondering why I'm leaking.

I got the vacuum pump running gasps balanced open. Until I see a good drop in microns, I'm gon na start cleaning stuff up hooking up electrical, but I'm gon na. Let the I'm gon na wait to do the electrical till the end. So that way, I can let the vacuum pump run with the solenoid valve open downstairs.

I don't want to hook that up yet so I'll clean up everything else. I need to come up with a bracket setup for this. I might have to do that when I come back. This might work somehow, but I think I need to cut it down and do something if I cut it down, that'll probably work some sort, it's not too bad, but that's my roof hatch going up, and then you got this room right here.

So it's not like it's horrible, it's just like you're you're ducking and you know doing or whatever, but this is where the hook really comes into play: drop things down. Grab the next thing, bring it up. You know that we don't get to go up and down and up and down to unhook things so really dig that hook. So I just finished up with my vacuum and what I did was.

I went ahead and hooked up my manifold to the vacuum pump because I'm gon na charge the system with my manifold and I wanted to get the manifold down. So it wouldn't ruin the evacuation that the system hasn't it come with scale zeroed out we're gon na. Go and open up the high side and start charging into the receiver. You know what I got.

Ta shut my system off because I have power turned on to it all right. Add some refrigerant into the high side. I took out about 10 pounds so we'll at least put in PI out. I don't even have 10 pounds on a cylinder so we'll put in what it will take and then go get.

Another cylinder from my van did a start-up without the condenser fan motor so that I can hear the compressor running if we're cutting in at 20. Cutting out at 10, we probably need to adjust that a little bit, but I'm gon na go ahead and fire up the condenser fan motor and we're gon na finish charging this guy we're running now. Alright. Last I checked, we had a clear sight: glass, I'm gon na.

Let it keep running for a few minutes. I need to go ahead and turn on the rest of the rack, because those racks been off for like 3 4 hours, so turn them on one. At a time nice and slow, the design of this rack is really dumb, because you know, unless you got probes, it's almost impossible to have your gauges and be able to see it's just dumb, because the way it's designed the air is pulling through here. So when you take a panel off you bypass the condenser, it's just dumb, it's running, making a god-awful racket, something's rattling I'll, have to fix that.

But at least we got a walk-in freezer again. The oil sightglass was like all the way full. So i just pulled a little bit out. Look at how nasty that oil we're definitely coming back to change the dryer and we might do an oil change too.

It's funny. It didn't smell too burnt, it's. It doesn't even smell burn either, but the oils just days and that's probably from the old compressor, probably came back, we'll keep an eye on it check on it. When I come back the yeah that doesn't look too high, okay, we're back and here's my little mechanism that we're going to use to blow out the drain, so they're going to connect any existing use in union.

This is a hose adapter. It's like put the water hose and these are end caps for the other coils. So, let's see how this goes, so this is what we got going on and we're gon na blow through and we capped off the other sides, and these are caps. Now this drain line was full.

These drain pans. We had to drain it into a bucket. Well, it wasn't full, but he already ports them out, but um yeah. Those are the caps so that way it blows and pressurizes and blows the other way.

I wanted to do it down here, but it's a one inch I didn't realize it was one inch and I don't have that alright now we got some stuff coming out now there was a chunk that came out, but it already washed down the drain. Well, yeah. We've got hot water now flowing so we're gon na back flush, all the other drains and then we'll be done. We're back up on the roof and we are going to change this dryer here and then we are also going to go ahead and do a quick oil change.

It won't take much. I thought. Maybe it was overfilled, but nah doesn't look too bad. It sits right below three-quarters, so yeah we're good.

So my only problem I was thinking about it right now is I didn't bring an acid test kit with me. So if I can I'll save some of that oil, but yeah, it's really hard to save it, though we'll see but anyways we're going to pump it down real quick change, the dryer and then do an oil change alright. So we did a quick dryer change and we changed the oil that we could get out of the system. We couldn't do a full oil change because I can't tip the compressor over, so we drained out as much as we could for now.

The oil does not look very pretty for being a brand new compressor. Unfortunately, like I said, I don't have an acid test kit, but I did change the dryer and check this out. We were still in a positive pressure because we're still basically have refrigerant vapor in the oil and I'm gon na pull a quick vacuum on it, but nothing crazy because there's no point so I'm just gon na pull it through my manifold, real quick put it into A negative and alright so, like I said, I'm just pulling a quick vacuum just to get into negative pressure. We're not gon na see microns at all, because looking I'm still pulling refrigerant out of this, I just wanted to make sure there was no trapped air right here.

Okay, all right! So this is my system right now: we're gon na go ahead and clean the condenser real, quick, so we're 334 head I'd, say it's probably about ninety degrees outside right now, so so this is what the condensers look like: they're, pretty bad, so we're gon na clean Them real, quick. Alright, we did our best to see it now. It's still got a lot of water, we're letting it drain out. We just have the condenser fan motors running right now, but yeah this thing was nasty over here I mean you know we blew through from the inside out to people watching it so yeah, it's there, so we're gon na start.

This compressor back up now, all right! So this is our system right now. We've got all of our numbers on there, let's just scroll through and see what we got going on right now, so we're running about ten degrees, 11 degrees, evaporator superheat. The box is still pulling down to temp. Okay, so that's acceptable.

We're gon na go through it's about a hundred degrees, 96 degrees outside we got a 200 degree discharge line. Temp, that's pretty good return. Air temperature in the box is about 2 degrees. It's set to maintain about negative 10 negative 5 somewhere in there everything's cool we're gon na wrap this one up, we're probably talking into letting let's do an oil change again man that one kicked my ass that ended up being all together.

I think a 15-hour call. It started out as a service call it like 1:00 p.m. or something like that on us. I think it was 1:00 p.m.

on a Saturday. You know it's one of those things I totally forgot about, like emergency service calls it's kind of funny because of this whole virus thing like things have been slow and I haven't been getting overtime, service calls and my wife and I were just at home and we Were like we're, you know, got cabin fever going crazy and we were just getting ready to believe it or not. I went and purchased a fishing license online. We were gon na drive up to a local Regional Park up in the mountains.

That has the fishing season opened up, even though kovat thing is going on. They opened up fishing season, so we were just gon na kind of go up there and scope it out. I wanted to see what it was gon na be like, and I planned on going back out there Sunday morning, really early and going fishing by myself, and we were literally walking out the door on Saturday and then that service call came in, and I told my Wife, like oh man, I got to go to work. I got a walk-in freezer down, I got ta, go ok, so I went and did it and it just turned into a thing man so left at like one got to the location like a two.

By the time I went through with the whole short drain line. Diagnosing a compressor and then locating where it was at and getting approval again, that's a hard thing to get an approval, because the customer wants a quote, but it's overtime on a Saturday like how do I quote that, so I just kind of give him like a Way, big ballpark figure and then I had to drive like 40-something miles to go, get the compressor and is just a long thing. So it took me three hours to pick up the compressor in return and then I think I think I walked in the door at 4:30 in the morning. I think something like that and then I think I went to bed at 5:00 a.m.

as about right and then I think I slept for about five hours. I woke up around ten a.m. and it was like okay yeah, I felt like crap and it's been. Let's see it's Wednesday the following week and I'm still like messed up from it that one just got me it's just one of those things.

So we originally went out there. We had a call found a tripped breaker, but I don't like to reset breakers. So I started investigating. It was very interesting that we didn't find a direct short at the contact or anything.

And if you guys watch the video you saw that it wasn't shorted, it started up and it ran. But then it made like a funky noise and it shorted to ground, so it was already damaged. Something was going on right. More than likely.

My thought is, is that because I tested to ground, but I didn't test the continuity between windings and I have a feeling that one of the windings was shorted to the other one. That's probably what happened and then it ran for a couple seconds and then it just shorted to ground and turned into a thing right, even though it was late night. I was tired. I was exhausted.

I still did my best to try to follow proper refrigeration practices. That's what we do right it sucks, but it is what it is. You saw me come back two days later and we blew out the drain line and then we changed the liquid line. Filter dryer.

I did install a high acid. I used a sporran 16 for H, H, which is their high acid core, the first time I was there and then, when I returned, I couldn't get my hands on HH core, so I went ahead and put in a normal spoiling 16 for flare dryer, and then I went ahead and she the oil that I could get my hands on. Unfortunately, because it's not a rotor lock, I could only drain what was above the fill port. Basically, so I drained out a little bit of oil.

I showed you guys in the video. It looked pretty nasty. I went ahead and replaced it with clean oil. I'd like to go back and do that a couple times, because there's really no other way to get that oil.

That's underneath the drain tube out other than just mixing it with fresh oil and then doing it. I did end up getting a sample of the oil and bringing it back to my house. I have it in a sealed container, so I do plan on still doing an acid test on that. I'm pretty confident we'll find something in there, but I really think that, because the previous summer, this is our first kind of like heat wave we're getting right now in the previous summer, we had some problems with this compressor.

I had some overheating issues and different things. Like that, I kind of think this thing was on his last leg already and it just kind of limped through the winter and then the first heatwave that we got it just took a crap. Basically, so this thing I think, was already damaged inside you can see that when I walked up, I showed like the compressor sticker. The heat damage it was, like you know, had been overheating big-time, so yeah.

I was interesting when I'm sure that the condenser being dirty and stuff had a lot to do with it and it had a auto reset high pressure control and I know there's a lot of controversy about me - he's an auto reset high pressure controls. But this is the perfect situation. You know if even with the cleanest condenser in the middle of the summer, on the hottest day 404 a we might run 425 to 440 head pressure because we get such heat out here at that particular location, the summertime temperatures can be about 110 to 115 ambient And if you figure that condensing tempo over ambience probably going to be 25 to 30 degrees over ambient, that's a pretty high, condensing temp, and so, if we had a manual reset on there, I would literally be going out to that customer. They would hate me because I would go out there and reset pressure controls all the time, and I know it seems kind of messed up, but that's just how it has to go.

When we have these high ambience. Unfortunately, the you know I would love. I know I can solve it. I could solve it by disease by over sizing these condensers and doing things like that, but the customer they build these restaurants and they just want to keep them the same.

They don't want to reinvent the wheel. I bring stuff up to him all the time hey. Last summer I tried to get him to. Let me pull this compressor off this rack put in a condensing unit that was bigger because I'm still worried about the condenser and the receiver sighs it's too small, but I want to put a bigger condensing unit up there and they're like no just leave it in The rack: it's fine, you know they have five other locations with this exact prototype across the United States that that they run it in which you know it's hard convincing corporate officials and things that they have other locations that are in Ohio and Denver and places like That, where it doesn't get 125 degrees on the roof, 120 degrees on the roof right but anyways, you know it's like beating a dead horse.

You just you do what you do you'd give them the suggestions. You put it in writing and then, if they choose not to use it or go with your suggestions and so be it, you know, although it does kind of suck, because I'm the one that's left, changing a compressor in the middle of night, but you know anyways. I guess I should be thankful that I have work right. It is what it is.

I really appreciate you guys watching to the end of my rambling rant at the end of this video. Do me a favor. Let me know if you guys made it all the way to the end. I do like to see the people that actually made it to the end.

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