 This video is brought to you in part by TrueTechTools, quality tools, essential support. All right guys, so we're going to do something here a little different today. Today we're working on a air dryer. So you've got a air compressor there and this is the dryer. What it does is it uses the refrigerant cycle to dry the air. Obviously you're going to run a whole plate. It's going to make a condensate. It's going to pull the moisture out of the air. Haven't done a lot with this particular brand so I need to figure out what's going on with it. I've already got it opened up. The compressor's hot so it's been running. It had a lockout code here on the front. Went through it. It's off right now far as to that. I had an LO1, LCP, and LP, LO4. So I'm not real sure what that means. I got to do a little search here to find out. Essentially it looks like we've got a compressor here with a condenser which is pretty obvious. Come on the back here and you look at it. You can see there is a dryer. It comes to what looks like a capillary distribution tube of some sort. It comes over, goes into this plate heat exchanger. You can tell that this obviously is the air coming in and out. So it's coming into there and going out of it. You can see on the front side there there is air coming in. So what it does, it comes into this chamber and eventually comes out of it. It's in parallel as you can see right there. And then you've got other kind of desiccants here or separators. Then you've got auto. Hit the test button. It'll blow out the bottom. What that does is it automatically gets the moisture out of the chamber there. The most important thing here is just to understand your basics, how the refrigeration system works. We're just going to be looking for the most likely cause because you can see there's a lot of crap here. Chances are it's probably leaking. It's a really bad environment. I looked at the front on the condenser coil here. I got the filters off which is just filters are a joke. You're lucky if they keep the squirrels and the birds out. But I can see through the back of it thanks to the door being open. So what I'm going to do now, I'm going to see if I can look up those codes. If I can't either way, I may try just go ahead and hit reset and we'll check the pressures. We got a discharge port here on the front and they had tape wrapped around the threads. So right there's that. Generally I don't like these screw on type caps for on the discharge because usually they leak. Somebody over tightened it which usually makes it worse. Always leery. Yeah, I'm getting there's leakage on that. Either that straighter core is missing or the valve core is bad. Either way that's going to leak. That type of cap will not seal. This is the first time I've been here. We don't usually do a lot of work here. So we need to find out where the nameplate is so I can find out how much refrigerant this thing holds which looking at it earlier was 407C. 293 ounces. 293 divided by 16. Oh it's just 18 pounds. That's great. Let's go ahead and scan it for leaks. This is a filthy place and everything here just filth. Here filth. What we've got is real cards that are getting repainted. You can see that's a big old paint booth over there. So they must blast them out here somewhere. They pretty much go all the way out there. They blast the graffiti stuff off and then end up painting and you need dry air for paint. The joys of HVAC pretty much can work on anything. Just got to figure out how it works. Sequence of operation. It's put all bulls down to you. If you know how how it's supposed to work you can find out where it's not working at and work your way from there. You can see a lot of moisture or foil or it could be just condensation. Don't know when it's this nasty dusty in here. It's really hard to tell. It's not good doing it over here on this one. So chances are it's mainly in that big expensive container part. You can see that looks like there is some oil over in this area here. So it's probably leaking up high and the oil could be dripping down low. Okay we just cut a little hole in there. That looks like stainless steel. If it was leaking down here at the bottom it'd surely be going nuts. All right so this is made in Italy which no offense Italy. I don't like your stuff usually. Usually we have a heck of a time getting parts everything else. You have a deep psi that's about 25-30 degrees. That seems a little low. Get it in both of those. Both blood out that way if we need to add or dump the refrigerant back into itself it'll be fine. Won't get air in the system. Non-condensable is all the other crap that seems to be happening a lot anymore. It's got an alarm. See the button there says a little bell. So reset looks like both. These hold it. See if it resets. The bell went away. Okay let me hold it for a second. There we hold it for a second. 59 degrees. Something just kicked on. We've got the fancy contactors. Can't see crap. So here is our pressures and temperatures. So we're running 19 pound suction. 53 condensing temperature. We are low. It's pretty obvious. Well before we just go pumping refrigerant in it we need to talk to these people. Find out. Is this an ongoing issue? What's the story Camille? All right so I spoke with them found out they supposedly haven't had that many problems but so they don't really know. When I got here that electrical panel there on the compressor was completely off. It's partially broke. Just dumped what I had left of this nitrogen bottle in there. Now I'm getting this one in there. We're gonna pump it up. See if we can find this leak. There's got to be one. It's kind of pretty important from what he's saying. The other cover here on the side taken off. So you can see moisture whatever. I tightened up those fittings on that line. See what happens is it condensates in the bottom and it blows it out there to the outside wall. It's a horrible location for this because there are literally sandblasts in these rail cars out here and all that dust gets in here and gets into these. That's a high dollar air compressor right there and it's getting all that dust and blow off all right into its fins. Just not a good idea. So we're pumping it up to a maximum that we're allowed to which low pressure side 303 high pressure 435. So we can go up to 300 which I think is about where we're at. Yeah we're at 300 right now. Let's go ahead and stop there. We're testing very quickly over top of this. I'm not dragging it because if I do look at that. Can you see that? That's dust. If it's a big enough leak that it took it out this quickly if that's exactly what actually took it out that it's a pretty decent sized leak. Like I said originally we had picked some leaks up here at the top. No good reason for it to be because honestly that container there is completely sealed from what I'm seeing. I've seen a leak out of these all the time. It makes sense for these to be leaking down here in the bottom because the cap tubes rattling up against the base of the unit. Lucky there we're getting something Bobby. It's going to be in those damn capillaries. Oh look I see something. I see something wiggling right here on that gold looking piece. There you go. Must be this one right here. Why in the world did they run that on this like that? You know it's going to vibrate. Oh my gosh look at that. There it goes. I wiggled it so now it's leaking like a beehive. Yeah we're leaking oil like crazy now. So we know it's right there. We're going to go ahead and get that pressure off of it so we don't lose a bunch of oil. More oil than what we already lost. Is there anywhere else? We really want to catch any other ones that are down here leaking. Yeah the reason why I ain't using my detector I mean that's that's just blowing crap loads of it right there. If there is a small leak you're not going to pick it up by turning the sensitivity down. Just kind of common sense here. System never got completely empty. I'm going to pull the pressure off. I'm going to use a small piece of quarter inch probably sleeve it after cleaning it up and then I'm going to braise on both sides of it and then put her back together. This is why I like wearing knee pads that way when you're down to this nasty crap it kind of keeps some of the stuff off your uniform. Let's get this wire tie stuff cut loose so maybe I can rearrange these. Oh there's another leak here. Look at that. There's another one right there. See it? Right there another one leaking. So we got two leaks. Fantastic. That's shooting oil all the way over here. So that's why you don't wrap this crap on the bottom like this. These idiots should have sleeved it. This is brain dead common sense man. You guys freaking engineers. Yeah let's take these lightweight little capillary tubes and let's put them down on the bottom where it vibrates. Where crap's going to fall down onto it. Brilliant. We're down almost no pressure. This thing's still blasting things out. That's crazy. So somebody broke the shader off. That broke that baby right off. Instead of removing it they just left it in there and put another cap over it. But instead nope let's not pull it out. Let's just leave it go. It took some wiggling and stuff like that and it screwed my tip up a little bit but I think we finally got it out of there. I was able to pick it right up out. Crazy. So what I've seen done before and it usually wouldn't be a big fan of it but something like this I mean there's just not a lot. Man there's some spots there kind of rubbed a little bit too. Man what a mess. What a mess. So this one here that we know is damaged completely. We're gonna go ahead and completely clean that off. We're gonna go ahead and get our sand paper here. Clean that up and then we're going to cut it with pipe cutter and then we're going to couple it together with a piece of quarter inch. I think we'll fit on the outside of it. Making the best of what we got here man. That's about what we got. Then we're going to debur it. Not easily going to fit a deburring tool inside there so quite good or not. That's about as good as you're going to get it. See if we can get this level that way. That oil hopefully will fall down and away from where we're going to be brazing at. Any vapor we'll possibly push it up there. I mean heck the heat can pull it up to it too. There we go. No I'm not going to run nitrogen through there. Not happening. There's too much oil and everything else in there. One little solder joint. It's not going to be an issue. Use paracord 550 for my ratchet there. I think we got it. One of the things that's a little difficult but you got to just try and see what you get. That one's repaired. Let it cool for a sec. We're going to chop into this one right here. I'm trying to sand it all up before I cut into it. Like I said that way the area is all clean. Probably could almost skim coat it but kind of scares me. It probably collapse on itself. So we're going to go ahead and cut it out. Okay getting that cleaned up. Got oil dripping down. That's going to be a real treat. If it wasn't open you wouldn't be getting oil through there and there's no reason for not to be open. You may try for giggles to go ahead and blow through this. Just see if we can blow some of it out. I don't know how it's going to act. Let's see what happens. Yeah there it is. We got the oil out of that one. We're going to do a little bit through the high side now. There goes the high side. It's getting blown out. There we go. Notice I'm keeping my hose out of the dirt. Common sense to some but you'd be surprised how many people at their gauges fall down in the dirt. Not good. All right so it appears that that did not record. I thought it was recording. We're just checking our other lines to make sure there's no other ones here that we aren't missing. They got this long ranger over here I'll buy himself and all the other ones went underneath there. See if we can just do a light coating here on this. I'll warm her up. Let's see how that does. We'll kind of let it cool down and then make sure whether it's going to bend or break. We'll do a pressure test on it. Just let her set for a little bit. I believe we've got them all. Let's go ahead and pump it up and see what we get and just wrap it around your finger and that way it's encompassed. That way if it's leaking on the back side that's how I do it to try to catch any leaks that are hard to get blowing off by putting it in there and making a little bath that helps keep it from doing that. So far so good. Go ahead and let that continue to add up. It may stop it at a lower pressure and see if it holds at that pressure and then we'll take it higher after that. That way we can salvage what nitrogen we have left because we don't have any more without going and getting it and I really don't want to do that if I don't need to. Let's see how this cap is. Make sure that's you don't have a newly overlooked leak which appears out and is fine. We've lost point two so far. Make sure my gauges aren't leaking over there. Put new seals in them. Ain't nothing worse than thinking you got a leak and your stinking gauges are leaking. So sometimes that does happen. Now the problem with doing it with two hoses is you've just been unable to get an extra leak point. All right we lost right at one pound over 15 minutes. That seems to always be the case no matter what it is I check. Compensated or not I mean that just seems to be what I always get. This is probably one of the best examples where the Navac pump here wireless truly comes in handy because I don't know where the nearest plug is and I just need to get it done without running cords all over. Not to mention your cord would be nastier and crap by running on that floor. So I'll grab my bucket with all my goodies and get started. Now I restarted that we're at five minutes and we're at point two. So point two four six I just went back down to point one. So 15 minutes compared to the 16 minutes that would be two four six it's already slowing down. I'm not too horribly concerned with that with it being a capillary tube system. We're going to really need to do both hoses. If it was a TXV we could get away with one but not really a good idea with a capillary tube. So I just pulled out the Schrader core off the suction side. You can see the Schrader core did not want to go in there very well. You can see it looks like it might be a high flow style. It's a square on the end kind of goofy looking not something I'm used to seeing here. Like I said it's built in Italy so they probably do things different over there. But we end up viewing the valve core depressor on the high side there. Even that new one I just put in there already won't come out. It's I'm not fooling with it so I'm just pressing it down using the valve core tool behind it. Best vacuum gauge you can get bar none. BlueVac Pro love it. On the clamps definitely worth the extra money to get the stainless steels. Those make it so much simpler to get things hooked up in tight spots. Definitely worth it there on that. And you guys always guys you can get this stuff at True Tech Tools. Save eight percent with promo code survival. I'm going to cheat and just put it right here on the other side of this. I am not able to read it when it's on the other down there in the back where I'd rather have it at which is on the suction side. Just because I know it's the bigger area. But either way we're going to watch this for a bit and see what we get. We're pulling down here. We got our gas ballast open. While that's pulling vacuum I'm going to go ahead and start working on some of these capillary tubes to see if we can figure out a way. We're already at 2,000 something. We'll isolate it. I am not really anticipating hitting and holding below five. Not on this system. We didn't replace the dryer. We got crap loads of oil with refrigerant in it that's boiling off. It's just an artificial number at this point. It's never went into a negative. Anytime you open a system yeah you're supposed to replace the dryer. That oil was blocking anything going into the system. Not overly worried about it. Judge it however you want. If it was running empty sucking moisture in sure. If you see where that's at right there there's so much oil in there. I've had it before. It'll flare up on you. You're going to turn this into an extra two three hours by time you get done dealing with all the other crap that's going to go along with it. And it's just not worth it. Just not worth it. If it hasn't had any problems before it hasn't been opened then it shouldn't be an issue. It does have high low pressure switches. It does have temperature switch on the discharge so far as all the safeties and stuff is concerned this thing should be protecting itself fairly decent to the point where it shouldn't have ran itself to death. Okay I've got some of this bigger split tubing here. Regular tubing I'm going to split it. And it's a bigger diameter so it should fit around it pretty easily. Normally we got a little bit smaller but this will make it a little quicker and easier for me to put it on there. Yeah you just kind of use your knife to split just the one side and then you're going to wrap that tubing in between there. You've probably seen it on rooftop units stuff like that. Some of the manufacturers do it. We've got two of them on. Got them fed all the way up to here. I have to wrap some tape on it because all these curves and stuff it's it's really wanting to kink off of it. Normally I use this one size smaller than this and like I said I ain't sure where this even came from. I think somebody gave it to me at one of the ice cream stores and I just said sure I'll take it. This is a little bit bigger diameter and it just is not as I don't hold shape as well as what the other one does. So all I'm doing is putting a little bit of tape on it so that I can make it around this bend underneath this fitting and it's working my way back to it. Now that I have all of them individually done I'm just going to do them in a bunch in a group and that will keep them from vibrating into each other but at least they'll have the plastic separating them. The biggest thing is not allowing them to vibrate into each other and running a stinking airline in between there wasn't a real smart idea. There you go. It's all up. Nothing's shaking. Nothing's got a wiggle room. Nothing's rubbing in anything sharp. Hoses fit back in there. That is such a mess. All this here it's going to wire tie it back together. Our vacuum is looking pretty good. We are 1,100. Let's isolate. See where we're at. See if it jumps up. It comes up to about 1,400. There's so much refrigerant in this thing. 0.9, 0.8 it's slowing down. So yeah 1,400. I've seen this many times. I'm not setting here all day to pull refrigerant out of a system. I want to make sure all air moisture and any previous crappy repairs or charging procedures or whatever were all cleaned up. Don't agree. That's up to you. That's my feelings, my thoughts. It was left open. Yeah, pull the oil out, the filter dryers on it. Do the whole nine yards. This is the bullcrap about it. I got three jugs at the back so I got extra 410, 448, 507, 404, 22, 407 sees back here. 407F. It's just ridiculous. Oh that refrigerator we came up with. Oh it's no good no more. Gotta get rid of it. Yeah I'll never mind the patents wore out. Nope, nope. We got global warming. Global warming. Whoops. Global climate change. Global change. Climate climate change. Yeah, sure. Still holding good vacuum. It's at 0.00 and it's not moving and I've got everything valved off for a while now. So we're going to charge a little portion of it into the suction there. We can bring it up out of the vacuum and then we will start dumping the rest in through the discharge. Yeah, so we made sure that it's broke out of vacuum. There we go. Positive pressure on the high side. 293 ounces. Well we'll switch my gauge to ounces. We'll go and write it inside here. Leak repair. All right here goes the moment of truth. Let's go ahead and turn this thing on. Not that that does anything. Go ahead and hold that button for a second. There she goes. It should run whatever program it's got going on. And let's go ahead and get this thing sucked in. See where we're at. We've got 165 right now so we've got another 100 plus ounces. We're at 293 on our refrigerant charge. Our super heat is 9.9, 10 degrees super heat so far. I just stopped adding a little bit ago. Discharge temperature so far is 123 and we're running a liquid temperature of 91. So everything looks right in line with the way it should look. And we'll go ahead and do our subcooling here. Clamp over there to our liquid. Yeah we're on the discharge line. Yeah there's going to be an itty bitty amount of drop across that condenser coil. Five pounds maybe. Ten no more but more likely they're lucky five. Not too worried about it. It's cycling on and off and actually shutting down. It's set point a couple times. So we're on a 46 degree super heat, 13.8 subcooling. That's what the fan's not running currently. We do have an error code here or something about the drain. I got to figure out what the story is on that. There goes the fan again. It's kicking on about 235, 240 ish so about 100 degrees. That's not too uncommon from what I'd normally see. And that's uh subcooling drops down there. All right them drains are seem to be working. Okay and let's squirt about six ounces in there to make up for what's on the ground. I'll just do it right while we're here. We're going to hook right onto the suction line and pump it right in. Liquid ounces versus fluid ounces is different. Weight ounces versus fluid ounces is different and it's so close. I just use the weight ounces so I just re-weight it and see how much I used. But I know each pump is right around an ounce. I think it was about an ounce what it was. So we should be good. Definitely better than not doing anything which is generally what would have probably happened. All right guys so I called the factory spoke with them. It sounds like this drain is basically a reminder for maintenance. I tried palving it off and flipping it sideways. There's supposed to be some clip or something to do. I don't see a clip. He said it ain't going to keep it from running. They're all blanking like that. Chances are from what I see the way everything else looks here. Chances are probably doesn't get maintenance turned off like they you know would normally be. But they work. I can watch the water blow down. Everything's working good. It's turning on and off. It's holding 35 degrees. All right if you guys enjoyed the video and you want to see more like it make sure you give it a thumbs up. Check out some of the other videos. This is just one of the first ones I've actually done on video one. I've done two in the past. I just don't do a lot of them. So this is the first brand here that I've done. The company that sells them is out of Georgia. So anyhow check out some of the other videos if you would hit the thumbs button. Until next time guys. Later.