 This video is brought to you in part by TrueTech Tools quality tools essential support What's up guys today? We're gonna be changing out an evaporator coil on a carrier unit go figure got some cool tools We're gonna be showing off. We got a lift here. It's gonna make it really easy coil It's up on the roof is leaking in the middle That makes a little easier Well, the unit we need is right over there a lot better than running the ladder that we use the other day All right for those there that like to always complain about everything that is not hurting the coil Because we leave it down nice and gentle not everything has to bring them jam banking man. I'm no damage Technically it's probably the first small little carrier evaporator. I've had to replace This thing was completely out of refrigerant Unjuicer there You know a whole lot of this thing at all. I mean it's tiny You can see that It's just a Lego set here. It just pops together. Usually it's just heat exchangers. They ain't good Those are looking a little dirty to him. I have to go ahead and brush him off. That'd be the next problem We got sprayed and touched up there got a strap back around it that way it doesn't vibrate End up hitting into something cause and it's a leak Make sure our gaps here good. They still got to get all these wires back into place yet Go ahead. We're going to start on our vacuum here. We got the Navac 4 CFM pump here We're gonna use the blue hoses done it both where I can lift it you know back it out and Let the trader cork close and then switch the hoses, but I Kind of didn't like that. There's always a chance of it sucking back through the core All right, so we got a micron gauge set up here. You guys know the routine unless you're new to the channel Use the blue hoses here. We're using a 4 CFM cordless vacuum pump Normally 4 CFM pump even a 2 CFM pump is not that fast But that's usually because you're trying to go through your manifold here, which I've already proven multiple times. It's pathetically slow This thing starts off really slow Builds up. It's DC driven. We're gonna shoot down to below 500 Bound it off see if it holds it may raise as high as a thousand This had some refrigerant in it. This had a nitrogen charge in it So it was never completely emptied to the atmosphere It's not gonna take that long to go down anytime that takes extra to get the Microns down there is going to be mainly just refrigerant boiling off and not moisture, which is what destroys the compressor We are using valve core depressor tools here. That's going to push the valve core down Give you the most possible CFM through there We have a couple there that we could have pulled out the valve cores, but honestly, I don't feel like dealing with it Just put a pressure test on it didn't go real super high. We got 115 on there sprayed all my joints Nothing's leaking So you're leaking through this contraption Or something but the the vacuum started rising right up really fast. We're holding right in there at 115.7 I don't know 17 minutes. It should have been a lot lower than what it was. Okay, so we just restarted it We're already at 2000 microns. So something must have been loose I think these were loosening up. I took them apart looked inside there. They were clean They're greased up. I I think something moved on it So I went ahead and tighten those up fairly tighter. They just barely touch so you don't really normally need to make them super tight, but It's obviously made a difference. We're already at 1900 and dropping so the pressure test held So about a one minute so far and we're already at 1600 Not bad beats me. There's 1500. Let's go and get this thing back together Just reverse everything I did. No fancy photography here. I got to wipe this crap off that one brushed off I'm gonna go ahead and get this one here. Like I said, this is a fairly new unit It shouldn't need washed out internally just yet We'll check head pressure and see where we're at if it does. We can always bring the five gallon bucket of water up here And rinse it out with a portable blaster We're at 955 Okay, so we're gonna go ahead and turn it on just a quick tap brings it on You don't have to hold it for a long time. Same thing here with this But you don't have to hold the button like you do for a field piece So if you hit the button three times, it's going to allow you to bleed out the solenoid so one two three There we go. We just bled through all of our hoses. Let's go ahead and valve this thing back off May do it one more time just because I want to make sure Okay, I like to go Through my suction and high side that way. I know they're both clean and clear We're completely bled all air out all the way up to our service valves or to our valve core tools So this is just horrible horrible lighting because it is so freaking bright I got the sun literally right behind me blasting down What we want to do what you want to go into measurement mode You want to go to refrigerant charging we want to go to automatic charging for By weight. So we went up to target method or target weight We're pushing up arrow there And we're going to 8.2 pounds is what this holds So there's three finally getting a small point 8.2 There we go Hit the center button or the menu button for enter Okay target 8.2 weight on the scale zero pounds We're going to go ahead and open up our liquid here Go ahead and tell it to go So I forget if I told it to weigh it in by pulses or not because pulsing will slow it down quite a bit I've gotten these just I've gotten this display way too hot. Normally they turn black. This one's turning white Which is kind of weird And this thing's the fence my phone is overheating left and right. I don't understand why it's not that hot I mean it it definitely is warm up here for sure the sun though Like I said, it's directly right over top of us blasting down. So we've got 8.2 in there We've got zero there and there's a start button right there. You couldn't see hit start There it goes Open up our valve Weight is going in It did a little bit and it stopped. Let's go ahead and remove our micron gauge. So you just brought in some more again Slowly adding it in spurts That's an option you could turn on and off. I accidentally left it on. I did not want it for this I really wanted to blast it all in there and not have to equalize on me What I end up doing is writing down they have 1.3 pounds in there Come down to here and it's just really hard to see this this sun is screwing with my phone It's screwing with the gauges. It's it just sucks. So up here it says pulse charging We're going to scroll up to that There we go. We're on it. It was on hit this enter button Now it's off come back down to manual Input hit enter. Now we got to reduce that by a pound point three six point nine Enter go down here to okay charge scales went back to zero hit the start button There she goes And she's going non-stop now, which is a whole lot better than on and off on and off I used the on and off because I was doing a small system But right now it's adding it's going to take a little while So if I want to go ahead and start carrying stuff over there to the lift I can go ahead and grab my stuff and start doing my My cleanup while it's doing it and then I don't stand there with it So that's where you're going to gain a little bit of time and efficiency If you're just going to sit there at it. I don't think it's worth it But if you're going to be productive and you're going to move things around And you know keep busy. Why not go ahead and Utilize it. I mean it's a little Little bit of an investment right now. We're at 2.8 pounds. It's doing its thing. It's still going Chances are you know, it may not get all that in there because I've lost some of my vacuum there You know the the refrigerator is going into it and has boiled off So I don't have a lot of room for it to kind of go in as fast as normal But we're going to let it continue to do that while we're doing it We can go ahead and start getting these screws in we got all the way up to 5.7 pounds It looks like here. So what I'm going to do is I'm going to go back We're going to pause it. We'll just throttle it in slowly through the suction side on the remainder there We've got our yellow open. Everything's still connected. We're blinking. Let's go ahead and get the rest of these screws in We've got the top back on got everything ready to go Got the power on I think the thermostat's turned off. So we're going to go ahead and jump it out make it run We was able to keep our Weight the same right here the valve did shut off just had to turn it back on Because all the weight is being supported right here on the edge It didn't affect our weight scale at all. We got everything jumped out there This coil here is clean. So we're good there We got this panel back on so we're not sucking hot air in We'll go ahead and block this off so that we don't have high head pressure Yes, you can run it through the little hole right there. I know about that. I just didn't do it So we can go ahead and we can tell it to start now And There it goes. You heard the click We're gonna throttle it in slowly. All right. We finally got to start adding I what happened was we've we've like paused a big time in between it things have gone to sleep I mean it don't do that if you're ready to roll But it wasn't ready to roll. So we've gotten it all we have to 7.2. I think it just stopped Because it's not adding anything. So it's probably gonna slowly nickel and dime it automatically as we get close to it Like I said, I haven't done this. So I don't know You're learning with me here Yeah, because we're open and it's definitely hot down there Uh, I'd say it should stop there. It's 8.2 8.26 Let's say it's done So now if you go to optimize Let's go ahead and make sure we don't add any by accident Go to optimize Auto charging by weight charging by super heat. We can go down by super heat And it can automatically do it by super heat. But for right now, let's just go ahead and go back to traditional mode. Let's go to Let's tell it to stop charging go into refrigeration And it should find my probes which I've got in there. We are on 410 a So far I've used this for manual and honestly I like that better I mean the solenoid is pretty neat But it's not often that you're going to need it Because there is a little bit of a hassle of having to hook up an extra hose there Super heat it's really low. We're like one Subcooling is at 18. This is one of those orifice systems in the manifold So chances are with me moving it around and stuff like that I probably overcharge it. We'll have to remove a little bit out of it. We're going to let it go We're only running about 391 for head man, which is 114. I think we're probably about 85 at least out here today. Let's see what we got We'll let that stabilize. I know it's already going above 90. So So if at 90 and we're 115 that's 25. So chances are we are just a touch over We'll let it stabilize here. But that's the gist of it right there When you've got everything perfectly laid out and you've got things on the ground You don't have tops flopping around the solenoids falling down stuff like that. It probably works really good In this instance right here. I'm having a little bit of issue because I've got to rush the clock. I've got freaking Trains going by I've got dogs and cats up here playing with my leg and And I'll just make up all kinds of excuses honestly So we're going to go ahead and remove some of this refrigerant and go from there So we're done with this we'll go ahead and put it back in its case I bet you give you a pretty nice case for it Sets in there. They've got a little foam thing there. This flops down Got a place for your solenoid to go right there. That sets in there You got a place for extra batteries things like that. This top flips back up Velcro it in close it Once it loses connection with the gauges it goes to sleep Simple as that Boom raid roll. It'll be a lot easier once I I've got to use it a few times right now Literally the first time I tried to record it things didn't go real good This time went a lot better It really takes a little bit of Experience with it before you can sit there and say, oh, yeah, here's how you do it A lot of it's a user error right now We're definitely pulling out some moisture there. It's a new style trap there. It's supposed to automatically drain So don't break but it's got its issues and it breaks Well, we repositioned on to the liquid line there Subcooling is down a little bit now. We're around the nine mark Superheats around 2.5. I've had to make a few adjustments to it Right now. We're just kind of waiting for it to stabilize I'm gonna go ahead and carry some more things down and give it some time to finish stabilizing down So I had to do a few adjustments here with it. We're running 46 degree of app 61 degrees on the suction come down to here. It's about 95 out here come down To 133 area, which is ballpark about right there Come down you're about 52. I've got 62 technically. I'm just a touch Under according to their chart, but 15 degrees super heat to me is That's where I want to be at five degrees subcooling It's not the highest there on that but I super heats what I'm more worried about because I don't want the compressor damaged Anyhow, that was just kind of an example of how the auto Charge system works. It probably would have worked just fine If I would have had everything ready to go and everything would have went in And you just know how to use the system the way you should but I was so anxious to show it off I didn't really know exactly what was going to happen in your recordings. So you make mistakes Anyhow, it's a really cool system. It's going to save you some time You while you're moving back and forth taking things to the truck. You can let it do its thing while it's running It can also do it Super heat wise and subcooling both and balance it in there and it'll pulse it in I haven't done that yet, but it can do it other than that. It's running really good It's brought the temperature down in there really quick We've got plenty of water coming out of it and the system's working like it should we didn't have any leaks We went through that make sure there was nothing leaking We just had a loose hose and we did it and uh, we're just going to go ahead and unhook here and Get things put together. I got a no cooling call at one of their other Units up here inside the building So we're going to go do that real quick But that's going to wrap this one up guys if you enjoyed the video and you want to see more like it Give it a thumbs up check out the links for the tools down in the description down below I have links to true tech tools get a 8 discount if you use Survival as your discount code and until next time guys. We'll catch you on the next one later