 Alright guys, today we're working on a water cooler for ice cream machine. We added a third machine to this place and basically these are water-cooled condensers. This is where it rejects the heat too. So it comes out here into this condenser. This condenser is controlled by a couple thermostats that are strapped on the header here and then your pump down here on the bottom is how it circulates the water. You got a bypass valve here and then basically you got some bleeders and things like that. I had the guys add a big old ball monster valve to make it a little easier to add and bleed and stuff like that so we've got that ready to go and basically the fans when it's colder weather it will shut down one or two of the fans just based off of the header temperature and then underneath here it looks just like a regular condenser that you would regularly see because I mean this is a heatcraft condenser unit, got a little expansion tank there. So we're going to go downstairs and take a peek and look at some of the stuff down there. They added me some isolation valves. So basically we got three water-cooled ice cream machines here and what we did is we added an extra machine to it. So we've got them all in parallel which can make it a little difficult if you got air in it. So we've got isolation valves on each and every one of them here and then this one here is a machine that we leased out from now we're selling. So I'm flushing out the coaxial coil and that right there is what a coaxial coil looks like. This is the U431 Stolting I2 unit. I went through and put all new belts, all new contactors. Basically went completely through the machine, made sure everything was ready to go for the next customer. And we just got done making sure all your phasing is correct on it, which I've got everything unplugged and made sure our rotations are correct. It should be going clockwise when you're looking at it from the front. Also because of the way these things are powered you want to make sure your phasing is exactly the same on both sides because if you lose one leg of power on say you would unplug the left side of the machine it will automatically switch and take power from the right side. So you've got to make sure this is correct because what it will do internally on the board which is located back behind here it will literally swap an L1 for L1, L2 for L2, L3 for L3 and if they're out of phase you'll have it dead short. So anyhow like I said we pretty well have backed out our water control valves. These valves here basically are how we're controlling our head pressure. This goes to the high side discharge side of the compressor and then based off of whatever you set this at which you know for these machines in particular I think it's around 235 on R404 we'll set that up and then that will regulate how much flow goes through because like in a day to day where it's really cold outside if you just run it your head pressure would be really low and things would be out of spec. So right now though to get it so that we could actually power through it and get it all descaled basically what I ended up doing was just backing them all the way out and to believe the machine is going to be the same scenario we're going to back leave these backed out and then I have to do that also these other two machines that were existing and we can actually isolate these things one at a time they come up here to the top come across and what we did is we've got about here and here so that we can loop our pump down and back again somewhere to what we got over there. We can isolate it from up above here and here and then over here we have a water cool condenser for our ice machine we got to get that bled to it just gonna make it so much easier now to be able to bleed these things down and we have to work on them we've got like I said two ball valves here and ball valves to isolate it so we can actually bleed these one at a time with a parallel circuit that we have going on here it was very difficult to get all the air out just it was just a nuisance didn't happen very often but when you do have an issue it really sucks we basically reclaimed our glycol we'll be pumping that back into it we're gonna go ahead and put this thing back together get this rinsed out with water and get all that acid out of there what we were using on it to dissolve it was some new calgon liquid scale dissolver and the pump we got in there was actually a little pump made by new calgon that's all sealed and it's actually made for acid like this so good in here those is hooked on these pumps do not crime worth a crap so what we'll do let this drain backwards through the pump here and that'll prime itself like this watch the bubbles there's some bubbles no more bubbles so now we're solid now we can plug it back in I'll suck it right up we're gonna do is just bleed the machines here that's the hardest part as you pour from the top the air is gonna naturally come up but get it all the way down the wall and back up again is the problem we're going to leave it down and back up again to that right there so you says this ain't gonna work right because the pressure of the water is gonna drain it all down here let's find out let's see how this happens I brought more glycol with me so I add some to it doesn't look like I shot any water up here a little extra up here to see if we're pure or not I'm not using the pump up here on the roof at all not yet this will allow us to add some water we just need freeze protection for a negative 15 just really depends he doesn't run in the winter time so freeze protection versus burst protection is a is a big difference freeze protection allows it to work without slushing and that's gonna screw versus burst protection which is where your pipes end up busting a lot of the reasoning behind so far we've gotten the glycol out of the 50 gallon drum we're looping down through here so we can actually valve off this one bring here's my supply so we can go to the furthest one which is down here to this one and what we can do is we can kick the machine on and run it for a bit which is gonna make it open up those valves so we're gonna do that real quick these here are kind of isolated right now do these one at a time to me it just seems like it would make more sense and we've got some water in here we're not gonna run these for very long this is the one that's open so we want to put it in that serve serve and serve sounds like it's running to me so feel some warmth there wasn't looping there's no way it couldn't be looping if we didn't have because with these being shut off there's no way for it to loop back so we're obviously going down and through that particular machine right there no problems at all we're not letting this run very long so we don't want to freeze up our barrel that just water inside there to me looks like it got probably completely open so now we'll go ahead and shut her back down out of machines on so we want to open that up about this one off make sure this one moves through feel warmth in here so it's definitely extracting heat in the water there we go so in all reality we should be all fine go ahead and open this one back up that way we don't forget and open this one too because it was already open I got all the machines here so we're gonna put it back into off okay we're unhooking that we're gonna do the ice machine now there we're going to do the same thing to this one right here so we just gonna make the ice machine or machine just kicked on go go juice there it is bled right through yeah sort of so we've got that isolated now and now we're up on the roof and we'll open that up there and we'll let the circulator do its job and then we'll check our freeze protection and see where we're at just a little gizmo here's our fracknometer and basically this is how we're going to check it put a little bit of the blue whatever it is you got there look through it and then you can see what your value is the blue stuff which is freeze control that's the brand of it that there's a chart on the side of the bucket for that one there okay hopefully don't get shot in the face hell yeah so got some there see how the pump looks see if it's circulating close that back down I'm gonna let this circulate for a bit it pulls off the bottom header there I want to make sure that we yeah we got solid stream there so we're not running the pump dry so I'm gonna go downstairs I'm gonna get a sample of it now that's all mixed together and see what my strength is at about 46 47% that would depend on the outdoor temperature the machine will be used at with your situation we can focus on the burst protection yeah you need a little more so I might add a little bit of just pure to it here's the stuff like I said it's called freeze control you cow gone here is your freeze versus your burst we're in the 40 some percent burst is at negative 52 and freeze protections one and that's at 50% so at 45 you're gonna probably about five degrees freeze protection and somewhere probably in the 30 something below in the burst so we're gonna add a little bit more because you know it don't usually get much below negative 10 here to negative 15 on average but that's only for a couple days or maybe you know a few days out of the out of the freaking year and that's very seldom that extra height they gave me looks really makes it a lot easier and that'll be like that when we're done cap I'll just keep the garbage out of there which don't need no pipe dope or any that crap on it that's the majority what's going on here basically we've led the hole downstairs first which made it a lot easier to get this done a little quicker also you can see down there the sight glass little foamy looking but that's not uncommon basically that's how a glycol system is laid out I like take this opportunity to thank all my subscribers that have subscribed and if you haven't subscribed yet if you would consider it if you enjoyed the video please give it a thumbs up and leave a comment down below is there something you would have done differently is there a couple tricks that you know of to make things a little easier so until next time we'll catch you on the next one