Got to point out the biggest flaw in this rack in the world. Remember in the beginning, I told you guys that there's a catch pan, okay and that catch pan prevents the water from falling onto all the electrical components of the compressors. You see how it's coming out of this side, all right, I'm gon na try to give you guys a shot here. All that lint that I washed out is in that catch pan.

So when that water evaporates - and it dries up all that lint goes right back up onto the condenser, this video is brought to you by sport'ln quality, integrity and tradition. We have been called on a walk-in freezer, that's not working properly and the fans are running, but it's just not cold enough in here the coil is kind of iced up in a funky way too I'll be honest with you. That looks like a refrigeration problem to me and it says 33 degrees on the thermostat so and it's set for negative 10, so thermostat is set correctly. We're gon na have to jump up onto the roof guarantee.

We're gon na have put some service gauges on this. Guy and see what's going on walking up to the rack, I can hear a funny noise coming from a compressor and to me it sounds like a compressor is bypassing on an internal pressure relief yeah one of the mess yep. It's like an internal pressure, relief State feel relief or something is bypassed in this guy. This is my walk-in freezer compressor.

I've got like a lukewarm, suction line, hot discharge something's going on, and I can hear it internally bypassing, so we need to figure out reset it now, usually that's caused by a dirty condenser. We have an evaporative cooler here to cool off this raft. That panel should be there yeah a nice plugged up, rack sings, probably been going see. The problem is, is they told me this thing's been going off since Friday and they didn't want to play overtime.

We've got to cool off the compressor reset of the bypass. If it happens too many times, it'll it'll ruin the pressure relief in the compressor and this swamp cooler just turned on on me. So it's a temperature control. Okay, let me put some gauges on and I'll show you guys what it's doing all right, like, I said warm suction line, really hot discharge line the discharge gases, bypassing into the suction line, via the pressure relief in there, the condenser being plugged that head pressure should Be through the roof and that's the problem it gets to, depending on how weak the pressure relief is.

It usually gets to about 410 415, something like that when it's weaker, sometimes it'll go a little bit higher and then it'll bypass. It's trying to save the compressor, but if it keeps happening over and over again, eventually, the pressure relief will go bad, that's just my experience. So let's hope that I can to reset it you're, just gon na shut it down. Let the pressures equalize out the pressure relief should reset and we're gon na clean that condenser and pull the compressor off.

Well, we'll just go ahead and clean the condenser and the compressor will get cooled off and then we'll see if we can't get the pressure relief to reset got to be very cautious, and you need to understand how your restaurants work. This particular refrigeration. Rack runs the ice machine condensers to the ice machine. Condensers, though, also have in to go heads downstairs and on those in to go heads they will go off on a safety if you shut off the ice machines when the heads are not shut off.

So solution is either we don't shut off the ice machine heads or we go downstairs and power down the the head units downstairs and then come up here and shut everything down and in this situation it's super easy. So I'm gon na go downstairs. Shutoff them downstairs and then come back up here, shut down the rack and I'll bring hoses up with me and we'll get this guy clean, shut off the ice machine, heads and powered down the entire rack, even at the main closed it up and then we're gon Na take every panel off and we're gon na wash this condenser from the inside out racks opened all the way through, but I put the panels in on that side and leave them out on this side and the reason why is the water will overflow? If you watch or if you ever do, one of these, the water will overflow and get all over the electrical components of the compressor worse now, it's still going to drip down, but there's a giant catch pan underneath here that keeps it from falling on the compressor. So all right, we're gon na give this guy a pre rinse and then we're going to put some cleaner on it.

Let it sit and then rinse it off. I, like the venom pack, because this is enough cleaner to do this whole rack and then some right, because if you mix it at the lowest dilution ratio, you can get eight go from this, but I'm gon na mix it higher. Because this thing is pretty dirty. But it's really cool cause.

You can just throw it in the bucket. You don't have to bring. You know three, four gallons of cleaner up onto the roof, we're starting with up three rents to give the cleaner a smooth surface to flow down. That way, you can really penetrate thoroughly and not get hung up on the dry surfaces.

That's just my opinion, but that's how I roll nice and wet and then we're gon na apply the cleaner. Let it sit for a second now we are going to use the brightener cleaner, which is dangerous. If you leave it on too long, it will etch the coil. You just got to be careful.

Okay, don't leave it on too long, but it is high foaming. I come to this side and I'm gon na knock down the big stuff like the wand is really nice because you can get way back in there and really knock down the big stuff before we apply the cleaner. So we, the cleaner, can do a better job of getting in the inside all right. I'm spraying it on super-concentrated getting a lot of foaming action going on we're gon na.

Let this just sit there and penetrate through the coils and then we're gon na give it a good rinse. Alright rinse the condenser, it's looking pretty good, still a little bit left to go, but I got to point out the biggest flaw in this rack in the world. Remember in the beginning, I told you guys that there's a catch pan, okay and that catch pan prevents the water from falling onto all the electrical components of the compressors. You see how it's coming out of this side, all right, I'm gon na try to give you guys a shot here.

All that lint that I washed out is in that catch pan. So when that water evaporates - and it dries up all that lint goes right back up onto the condenser, see that drain hole, it's plugged up the catch pans full of water right now, because the lint is plugging it up. You got to make sure you look at the big picture, guys clean that lint out of there clean that catch pan, then the condenser won't get as dirty as fast all that lint and gunk and whatever's coming out. You can see new stuff washing up every second, and I just have the hose just sitting there.

It's gon na be almost impossible to get it all out, but I'm gon na do my best. The system is back on and running. We've had many problems, I've mentioned it in videos before my suspicion is, and I've never done the math just because whatever but the condenser is undersized door, it's marginally sized, so we've actually had to add this evaporative cooler. So I need to make sure that is working that should be blowing on the rack, hoping to pre cool it for these really hot days.

This past weekend here in Southern California, we hit about 110 hundred and 15 in my area. So it's pretty high, so everything's running the compressors reset check our compression. It's got a wet condenser, so we're gon na. Let it run for a minute.

It's not bypassing at the moment, so we're just gon na. Let it run and we'll see what happens. Let's hope that it doesn't bypass again, so the water flow was turned off. Basically it was, it was stuck probably winterized.

This probably has never been started up, so we have no water helping with the pre cooling, which would explain a lot so now that I'm filling it up with water. You can see it's already flowing water through it we're lucky, it didn't burn out the pump okay. It's gon na take a very long time that it's running now the DTC valve is working. This is the cooling valve basically take the liquid refrigerant meters it into the compressor when it goes into high compression ratio situations to help cool off the head.

We've got a clear sight glass by our for you guys to see, but it's clear. It's definitely gon na take a while to come down to temperature because that box it was at 35 and it's been there all weekend, so we're just gon na. Let it run for a bit all right, then, about 25 30 minutes running boxes coming down in temps sight, glass is still clear. Refrigerant pressures are a lot better.

Considering we're running with a clean condenser now and the evaporative coolers running, I think we're gon na tell the customer to keep an eye on this one, and let us know if they have any other problems, there's always a possibility. There could be internal pressure relief damage and that compressor, but let's hope that it's okay, when I got here this morning this the moment right here - red 30 degrees. These aren't very accurate, don't ever go by just these, but now it's reading zero and my thermometer in the box is reading sixteen degrees so give it some time, but it's working now it's coming down in temperature that weird frost pattern is gone. It's just frosting evenly now, so we'll tell him to keep an eye on it with these customers.

Sometimes you know they frustrate you and in this situation I was kind of happy. I had heard this actually heard this call come in on Saturday evening and they said hey. We don't want you to come out till Monday, but then the story even got better. When I got there on Monday morning - and they said oh yeah well, it actually happened Friday and the boss of the boss of the boss decided that they didn't want to pay overtime on it, which okay, that's fine, but I told the customer I go.

Look. I said not that I really wanted to come out here on the weekend. I said, but you guys almost ruined a potentially for somewhere between four to six thousand dollar compressor by the time you got done doing it all it's a big job. To do that compressor and I go all because you guys didn't want to pay a couple hundred dollars in overtime.

So you know they were lucky and I told them. I said you know, there's no telling if there's any compressor damage, but I said times, gon na have to tell it's working fine right now, but in my experience actually on this compressor itself, I've changed this compressor on this rack three times already since startup in, like 2004 ish, I think, is when this restaurant was opened. I've changed this compressor that many times, okay and each time has been internal pressure, relief problems where the pressure relief has failed and it continues to fail and what's happening is, in my opinion, the rack. Condenser is marginally sized and it causes the system to run higher than normal head pressures on a normal basis, and it just causes issues recently this this last time I changed the compressor i finally got to the bottom of it a little bit more than normal, and I just told him I said: look we need to pull this compressor out of this rack.

Put a bigger, condensing unit, it'll be properly sized. We gave him a price. The customer didn't want to go that route. They asked for a couple other different options, so we quoted them a new compressor in the existing rack and then we added an evaporative cooler to pre cool the rack to try to bring the condensing tempter core.

That cooler is there solely for that walk-in freezer compressor, because we've had so many problems with it. Now, if you guys want to go back in the video and look look at when I had all the panels off of the rack, if you look at the three condensers on the far right side of that rack, okay, the three condensers you had the beer walkin, The walking cooler and the walk-in freezer and all three of them have an identically sized condenser coil. If you look at them, they're all the same size, but then look at the sizes of the compressors okay. So the manufacturer of this rack more than likely sized the condensers based off of basically what was convenient to fit in there now they probably I'm sure, paid attention to you know heat of rejection and all that stuff right.

They probably paid attention to that, but I'm just saying that the walk-in freezer is marginally sized. So therefore, if you get even a slightly dirty condenser or in this situation a rather dirty condenser, it immediately goes off on an internal bypass. Do it, whereas the other ones weren't going off on bypass, because the condensers were grossly oversized? In my opinion, the beer walkin in this restaurant is tiny. The walk-in cooler is a rather large walk-in cooler, but the walk-in freezer being low temp requires a bigger condensing unit.

As usual, okay, so you can just tell that there wasn't a lot of logic. They didn't size, every condenser based off of the BTUs per se, because the walking in the walk-in cooler are the exact same size as the freezer. You guys kind of get where I'm going with my logic there. They just probably have like a one-size-fits-all.

They only have so many condensers they're willing to use in here, and that's what happens so it's just interesting. You know, and I I wasn't trying to be. I wasn't upset with the customer. I was just trying to tell him like look guys if you guys have a problem.

That's what I'm here for call me in and you know, and they were like yeah, but we were told no overtime and I'm like, but it's your walk-in freezer. Like again, I really didn't want to go out there anyways, but still you know it just kind of baffles my mind right now, but everything's changing right now, guys in the restaurant industry with the virus and all that stuff. Everybody is pinching pennies in different ways and doing things that just make me scratch my head. Some restaurants are spending money, hand-over-fist right now, changing equipment, doing all kinds of things, and it's like where's that coming from you know, I'm thankful for restaurants that are spending money right now, but it also makes me worried, because I want to keep doing business for them.

For the next 20 years, and until I retire thirty years whatever it is right, but you know some of these restaurants, I wonder if they're gon na be around two years from now three years from now. I don't know it's very interesting so yeah, it is what it is. You know I try to do my best. So hey.

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