 we got a prep table here that basically was running warm and this I think is a Randall. Let's take a look here. Yeah it is a Randall. So these Randalls are notorious here. They got a box coil down here for the box and then they have a rail up here. Well this little gizmo here is new to me. I haven't seen this before. This has got a little fan in here and believe it or not they got a thermostat. So it sucks that air in and helps distribute it around the top rail. The thermostat controls on the bottom here. So when you're reading through the instructions down here on bottom it literally tells you that you know not only do we have a rail switch and you got another thermostat here that you would normally use but when using this little gizmo here to move around the air that that also controls it. Now it was set at number four so I still got to go through and check the refrigerator in charge because like I said these are known for leaking. What we got going on right here is not very impressive. We're basically in our measurement in between the pans here. You can feel it it just does not feel like it's... see if that makes a difference. Still just doesn't seem to make a difference at all. You can see our coil is not too horribly bad up there in front but I've heard this thing kick on and off multiple times. I think our probe here has gotten either pulled out or something or another. Actually it's kind of cold on the end. It's been shutting off and turning back on. So I'm gonna see where we're at here for this. See if I can shove it back up in there further. I have a feeling that it's supposed to be up there further in the rail and it's not sensing temperature properly because of that. You can see where the refrigerant comes on the backside here. Just basically comes across. You got to watch out for this kind of stuff too here. A lot of times what'll happen is they'll shove this thing back and it'll end up smashing that plug. Alright so we did a leak check real quick and I'm not finding anything. Usually our leaks are in here on this thing which you can see the part up on top is definitely getting cold now the fans have stopped. We shut it down to do the test. Everything they're describing to me but it's splotchy in certain areas where it's just frozen in certain areas not everywhere across the rail and then my suction pressure when it's dropping down it's getting down to those little seven pounds. Everything's leading me towards being low on charge. For some reason on these they don't put a cyclist on it even though it has an accumulator on it. Our rail switch should be calling and it's not. I've got the thermostat turned down all the way on this one. I got it turned all the way down on the other one and our rail is nowhere near where it needs to be at. Our box down below is around 41 which adding all that great but the top rail is 60 so we're not really where we need to be at. So we need to adjust that off pressure there because that's not good so if we get a leak we're gonna be sucking air in. So we got to fix that and then we got to find out why you know it sounds to me like we got a thermostat bad so now we got to figure out which one it is. We got about 86 degrees going in here. I just blasted this coil out with nitrogen so it's even better what it was before. I hit it from backside as well as the front. Backside got more out of it than what the front did. The car is blown it out but like I said looks to me like we got an issue with that thermostat. It's generic because that sounds. I'm going to leave that pulled out and see if that rail starts to freeze up. They said they were having issues with it not freezing evenly so between that possibly refrigerant. I mean refrigerant definitely cause potentially uneven freeze pattern. Okay so our box is now down to temperature 36. Rails dropped some so it is coming down slowly but it didn't say that it used to run good when they first got it which was about two months ago. So this comes back to the clues that I was talking about. You want to make sure you question them and ask them what exactly is going on. My thought process has been if it used to work good and it just stopped then something's changed whether it be the thermostat or refrigerant charge whatever. You know 86 in here and it's around 100 degree saturation temperature that's not too extreme. I usually see it to be 20 sometimes even 30 especially a degrees over what your rim temperature is based off of how dirty the coil is and things like that. Now that's not the way to charge it. Most accurate ways to pull it out weighed in but in this instance right here it's not necessarily practical to do it like that. So right now I'm still waiting to see if this thing will come down. He said this thing would run all the way down to the point where it increased the food and now it's not. So with that pulled out and that heat hidden it, it should tell me well that's the thermostat. I need to make an adjustment on this. Alright so I spoke with the factory and he said get rid of the box. He said they've had problems with those. That's the reason why they don't use them no more. He said you just wire around it here at the switch which we'll go ahead and do that real quick and then far as the thermostat he said since it's turning on and off he goes pull it out further and I thought really? So I'll pull it out and stick it back in until I get where I need it to at but I think I'm still gonna order a new thermostat or just in case but he said even with the new one you're still gonna have to adjust it in and out of that little rail area that that bulb goes into which is quite interesting. So as I'm taking this apart this thing is hot as all get out. So we're going to chop these wires off and get them nice and stripped back. You can see the corrosion of stuff starting to begin on it. So basically like he said just unwire it from there and then chop it off inside the rail. Silicon is shut so it's food safe. They had a plug in here that went up to the top and basically that's what we undid. Then this over here is the stuff for the fan down in the cabinet which I screwed up and cut which is a good reason why you never chop all your wires off flush. If you do and you make mistake like I did you won't be able to repair it. So luckily I was able to put buck crimps on there and repair that and they're nice and tight and strong no problems with that at all. So I do screw up every now and again but what you do with it's what's important. So got to tie this back in here at the neutral and then we're all good to go. So the wire ended up coming from the back there where the penetration is from the refrigerant lines came down through here and originally went up there to the bottom of that. So we got all that cut out. Basically I asked them if they cared whether we leave the little rubber thing in there and just cut it flush or they want silicone in there and they said they'd be okay with it just being cut flush as long as it was dead. Well it's obviously dead now. We could always get them a plug for it like this right there. So let me get that when I come back that right now that's what we got. So that's completely unhooked and the Silinoids doing its thing. I'm basically slowly adjusting that thermostat out of there. They said put it in the middle position and just kind of adjust it until you get where you want. Kind of generic but makes sense. I adjusted our loop pressure switch here a couple pounds. I got to test that here a little bit. The pressures look pretty decent. I'm not going to add anything more to it. Right so as you can see our top rail is now starting to freeze like it should. And basically like I said what we basically did was adjust the thermostat probe in there. Remove that fan. The product's a little bit warm so they're going to pull that out here for a long time to walk in. It brings it back down to temperature. The biggest thing I thought was kind of corny was they wanted you just to pull that out until you kind of can regulate it. You can see where that wire went to the fan on the back side and then they said try to do it with that in about the middle position. So this is your on and off switch. So all that stuff's still the same. Got a new filter media on there because they are doing pizza and stuff here. So there's a lot of powder, dust, flour, stuff like that. Getting everything done. But she's it cycled off one time and came back on so it is regulating temperature. I'm still going to recommend we replace that thermostat and then when we come back we can double check anything else that we need to look at. So basically rundown we added about half a pound of refrigerant. Adjusted our pressure switch because it was going to do a negative and mainly adjusted our temperature probe here and then got rid of that box. It also was in control of that solenoid on top and so our biggest issue was that top rail just wasn't wanting to run. Other than that I don't know if it was really all that low, half a pound ain't a whole lot. It holds 40 ounces. So like I said I didn't can go extreme on that and other than the one screw up I went ahead and let you guys see just for chits and giggles so you know I ain't perfect. Big thing on that is just make sure you leave the wires always long enough that you can always repair them if you need to or you might need them in the future. So if you guys like the video and you want to see more like it give it a thumbs up and don't forget to subscribe and click the notification bell. Until next time guys we will catch you on the next one.