You, hey everybody. How are you guys doing this evening? Hopefully you guys had a good weekend. For me it was nice because I had another person that was on call this weekend, so it was nice for me to chill out and enjoy a nice long weekend with the family. So it was cool and I mean you know, did family stuff went shopping today, which is like you know, I'm sure, like any of you guys too, that's like the worst thing in the world to be in a shopping store, but I'm a very selfish person.

I don't like to shop for anybody about me and even me, I don't like to shop for myself. It's kind of a pain in the butt. I rarely go shopping swipe most of my clothes and stuff, we're all old but yeah, that's life so but yeah. Hopefully, you guys are having a great weekend we're about to just end up the or round up the rest of our weekend tonight we're going to barbecue once I get done with the stream and then everybody goes back to normal life tomorrow.

So hopefully you guys on the East Coast getting ready for some wet weather. I know I know it's been taking a long time for that hurricane to make its way through. But hopefully you guys are all okay and everybody stays safe. Hopefully, it's just a bunch of hype cross your fingers, I'd love it.

If that was the case, then it wouldn't be messing. Anybody else's lives up. You know so, but anyways got a couple things I want to cover on my list and then of course, as usual, I want to go ahead and get to your guys's questions in the chat. I'm just gon na start it off by saying, like we usually do.

If you guys have questions, please put them in caps-lock, okay, so that way, we're able to see them a little bit better because there's usually a lot of conversation that goes on in the chat and nothing wrong with that I mean that's what the chats for it's Kind of it's got its own little world, sometimes where there's some people come to these streams. Just for the chat, because there's like cool conversations going on in there, but when it's questions that you guys want me to answer, if I can, if I can't answer them, it's best, if you put them in caps lock, so that way, we can see them and Then also you know sometimes these chats. They move pretty quick. If I don't get to your question, you're, not gon na irritate anybody.

If you put it you're, not gon na hear tape me, I should say if you put it in the you know, just please paste it again. I guess I should say so. Just keep pasting it until I get to it myself from my moderator just and we'll see it and we'll make sure I try to answer it. If I can so sometimes some of the other guys that are in chat feel free to answer them.

You know I know: sometimes you guys help out and stuff. So that's cool um, oh wow, mr. Johnny boy. Thank you very much man.

I really appreciate that super chat. Yeah. It looks like it's gon na hit hard, that's right, so yeah. So mr.

Johnny boy, as far as, if I'm selling shirts and hats, what I did honestly was, I gave them away, I'm out of the stock of the ones that I'm gon na give away. I still have a few left over. I'm still trying to figure out the best way to distribute them. I I do plan on place in another order, much larger order the next time, but I just need to figure out the details so know at this time.

I'm not selling them, but I will be soon in the next time. Hopefully, if I can figure out the logistics of everything we'll have hats, I did decide on some samples that I had. Finally, I've been wearing some hats for a couple weeks now so yeah, hopefully that'll be coming soon, as you guys see like that's, not like a major priority for me. I definitely know that I've heard a lot of people saying they want hats and shirts and things, but I've just been trying to focus on videos, and what basically is holding me up is the sales tax portion, like I had mentioned before, having to pay sales tax.

Basically, in every state, it's a pain in the butt. So I'm waiting to talk to my tax guy, hopefully I'll, be meeting with them soon and figure out some stuff and then I'll make announcements and stuff and then I'll you know I never even officially announced it on my channel besides on the livestream, so I'll make An official announcement to all the social media and stuff, once I figure all that out so but again, thank you very much. No, I have not tried the Zoom lock, yet it's just really something that really hasn't been beneficial for me, yet not knocking it. It's just really hasn't been something that I've needed to try, but yes, Portland is pushing the zoom lock and you know they they do like it, and I've heard a lot of great success stories.

I've also heard a lot of stuff on the other side, where people say they don't like it to each their own. You know it's not for everybody, okay, but definitely one of these days I'll, surely try it, whether I'm at like a zoom, lock Roadshow, which they do often or you know whether I'm with someone that has a zoom lock or something like that. But I'm sure I'll get my hands on it at some point. So so let me see what we going in here, I'm just looking at the questions here.

I do want to go ahead and make make it I posted on social media a little bit. Hopefully, if you guys follow my social medias, I'm pretty active on Facebook and somewhat active on Instagram, so I usually post stuff on there. I am officially gon na be at the HR show in 2020 in Orlando, and also just I'll, be there for at least the first two days I'm gon na be leaving the third day towards the end of the evening. So I don't know how much of the show I'll be there.

At the third day, I haven't really structured any meetings or anything like that with people which I'm sure I'll probably have one day just for walking the floor, I'm assuming one to two days and then maybe one day just for meeting with people. So we'll figure something out but I'll. Let everybody know once we get closer to the date, and I am going to days early before the HR show for an event that the HVAC school is gon na have at their kalos office. They're gon na be having a training session.

I will actually post a link in the chat right now. To that event, it's gon na be many many HVAC, our technical trainers, much better than I are going to be there, but I think it's gon na be something. That's gon na sell out for sure so I'll go ahead and post a link in the chat right now, if you guys are going to be in the area or if you happen to be in the Orlando area area. I highly suggest you guys look into this training class again, it's two days before the official.

Actually it's three days before, I think it's the Friday before the HR show Friday and Saturday. So definitely something - and I will be speaking at at least one of those days. So a chat chat. Thank you very much man.

I really appreciate it. It's interesting because I see some of these people in here like Chad. Chad is local to me. He's seen me driving around out in the field and stuff like that before.

So it's kind of cool because I start to recognize your guys's names. Oh right on cool Justin, I'm glad we'll have to try to set something up there Justin, I text Jack too and I'm sure we'll be doing something with Zach guys yeah, because I imagine he'll be there too. So maybe we can do some kind of public meetup or something like that where we can meet everybody I'll, be there officially for seven days. I think we're gon na be there a couple days before, but I'm actually taking my family we're gon na make a family vacation out of that too.

So a couple of the days I won't be available cuz. I have to spend some time with them, but alright, let's see what else we have any tips on free stats on a Lennox in urgence as in. Are you having problems with the free stats, because I personally haven't had too many problems with them? I mean you know an older units. I've had problems with the free stats after time they start to get saturated with liquids and they just short out internally and you just have to replace them, but other than that, I really don't have any feedback on the free stats.

I haven't had any problems with them. It seems like that's a thing that happens with a lot of the packaged units as they get older. The free stats start to fail, and I just kind of associate it with a lot of moisture being in that area and eventually they just get corroded and short out. That's just my opinion on them.

So how do I check coil temperature? Sensors Diaz 377? Well, it just depends what kind of coil temperature sensors you're talking about if you're talking about like the Traulsen temperature sensors or the delfield temperature sensors on the refrigerators. Those are very common failure item even on the Manitowoc ice machines. Those are a common failure item and what I will do is you know? What am i mixing people up here. Chad is that you, Chad, that's local to me or is a cm HVAC R, that's local to me.

I think I might be mixing you guys up. I'm sitting here wondering anyway, sorry, I'm getting distracted there, but as far as tamping that the temp sensors on the refrigeration units, usually on the del fields and the Traulsen x', I think it's 15 K ohms at 32 degrees is what you want to do. So. You'll pull the sensors out dip them in ice water and then ohm, I'm out.

That's the best way to do it on the Charleston units. You can you can get into the Installer settings of the engineering settings and you can look and see what the sensors are reading. At the same time, those are really common failure items on the Charleston's, okay, so HVAC our vlogger. So you said on the Honeywell book that I posted on Instagram: are they free yeah the Honeywell book? Well, it's a free download in a lot of times.

If you, if you know your supply house well, they can get you a copy for free. I don't think I've ever paid for one of those books. I don't have a picture of it right now, but it's basically the Honeywell economizer book and it basically tells you how to work on any Honeywell economizers, whether the the old electromechanical z' or the new Honeywell g8 controllers. It has all the wiring diagrams and everything.

So what I will do is, I will put a link in the show notes of this live stream for everybody and they can download a copy of it from the Honeywell site and or they can try to get their supply outs to get them a copy of It, but it should be free, I mean just depends: let's see what else on those units, how is the V shaped, coil split between the four compressors, I'm assuming that you mean on the the Lennox in urgence units yeah, you have to open up the installation manual On those things - and it actually shows you so usually, let's see if I can picture this, the front top half of the coil is first stage the back top half of the coil on the inside of the V is second stage and then the bottom two halves Of the coil our third stage, but then, if you have the fourth stage, compressor yeah you'd have to open up the manual it's kind of hard for me to picture that in my head, but in the manual and the installation manual of those Lennox units it actually Breaks it down, you know which compressor goes to which condenser on those things so okay, so I've got some stuff on this sheet that I want to cover real, quick and then we'll get to some more questions. Okay. Well, let me see okay, some real common questions. First off the two videos that I just released since the past livestream were the r2 90 propane video, where I worked on the r2 90 refrigerator had a bad low pressure, control went ahead and replace that and the next video was the two kitchen aces that were Down, obviously, I'm gon na.

I got the most questions on the r2 90 video, because that seems to be a little bit new to people and for those of you that are here in the United States. Our 290 is nothing new to the rest of the world. The European countries they've been working with our 290 for many years now, so they're very comfortable with it, and you know for us in the United States, it's just something new, so we're started trying to figure it out with us in the United States. You know a lot of us have fear about it.

You know that's dangerous. Why are we doing this, but you got to understand that the rest of the world has been using that stuff for a long time? Okay, so it's a very, very common refrigerant around the world and yes, there are some horror stories about flammable refrigerants, but majority of the time what you see in some of the Mid Eastern countries, you know you've seen explosions and different things. That's because typically, people aren't following proper refrigeration practices and bad things happen because of that they're not pulling proper vacuums and mixing refrigerants with air, and then things happen when it compresses inside and things go boom. Okay.

So if you follow proper refrigeration practices with our 290 there's nothing to be afraid of okay understand that our 290 refrigerant is completely legal to vent into the atmosphere. I know that's a scary thing because we're we're brought up as HVAC technicians to not vent refrigerant, but our 290 is basically just pure propane. It's like 98 %, pure it's uh notarized and it's completely safe, take a drink of water here, real quick. So you have no fears working with it, just got to follow some proper safety practices.

Okay, so I'm just gon na kind of go over the gist of the AR to 90 stuff real quick and it's gon na answer. A lot of the questions that I had so are 290 typically comes from the factory without any service ports. That's not a requirement, okay for the EPA or anything, but it's something that the manufacturers have decided to do. So I have heard that some manufacturers are shipping.

Their units with service ports, but a lot of them aren't okay, usually what they'll have is they'll have a red sleeve, whether it be red tapes and insulation, with some red tape on it or they'll. Just have like a heat shrink tube over the process. Stubs. Okay, the process stubs typically don't have refrigeration ports put on them, they're, just crimped off fittings that are braised.

So a lot of times when we come up to the systems we have to tap into the system. Now I've heard many different reasons as to why they do that, but the most common and most logical one is because they don't want us service technicians to put service gauges on these units without realizing that they're propane. Okay, they want us to be cautious in even before we started dealing with propane. There was many small refrigerators that didn't come with service ports.

That's nothing new! Okay! You work on tiny little refrigerators and that's often that they won't come with service boards. The other reason about not putting service ports on them is because a lot of times they're super critically charged systems. Now the are 290 systems. Typically are gon na have a refrigerant charge of 150 grams, because that's our charge limitation right now in the United States.

For our domestic or for our small commercial refrigerator's is 150 grams. Now the domestic refrigerators and the homes it's a little bit less. I don't know what that charge restriction is, but with 150 grams. So it's like five point: six, seven ounces of refrigerant.

It's very easy. Once you put service gauges on that you're gon na basically remove a third of the refrigerant charge, is gon na fill up your service gage hoses, so you have to use the shortest hose as possible, and you just got to think before you put service gauges on Them: okay, a lot of the questions that I get is how come I didn't use. The the mechanical fittings bicep coat, the little line, tap valves that you turn an Allen wrench and it pierces the lines. I don't like those line tap valves because they leak okay, so if I'm gon na use one of those line tap valves.

Yes, I understand I could have put that on there instead of having to braze fittings on in the very beginning, but I would have had to win and if there was a refrigerant leak. I don't like to charge with nitrogen through those things, because if you ever take the line tap valve apart, it puts the smallest little hole in the system. It's just a pain in the butt, so I prefer just a braze on fittings. That's my personal preference! There's! Nothing wrong if you guys want to use a line tap valve a piercing valve or there's also some mechanical fittings, such as there's a company called Vulcan, lock ring that makes mechanical fittings.

That kind of, like the Zoom lock but in another mechanical sense, that that crimp onto the lines you can use those too okay. I just personally don't use one of the crimp tools, the Vulcan lockring tool, just because of cost, and nobody has them around here. I like to look at things before I buy them. I don't want to just order it off the internet, so yeah so other than that on the AR 290 system, and you just got to follow basic refrigeration practices.

One of the things you want to remember - and I think I might have showed it in the video - is even before you even before you tap into the system after you've, let all or I'm sorry after you've, let all the refrigerant of the system there's still going To be flammable vapors all throughout the system, I have an r2 90 video from a couple years ago, where I pulled the compressor out and I was purging with nitrogen, so mind, you there's no compressor. There's no refrigerant oil and I took my torch across an open line in the system without a compressor in there, and it's still ignited so there's multiple little pockets that you can have the flammable vapors just sitting there. So you always want to be cautious about that and be ready, and you know what I said, and I think I said it in this video any time you're working on something you want to try to think about the worst thing that can happen while you're working On it, so that way win and if it does happen, you're prepared for it. Okay, so I got a fire extinguisher.

I have a wet towel. I have a little spray bottle. You know have a water hose, whatever you have nearby, so that you can extinguish anything that might happen same thing goes when you're brazing, you know, even when you're not doing with our 290, just be prepared for the worst. So that way you don't freak out, and you don't panic.

Okay and one of the biggest things that I've always said is you have to learn when you're, when you're working on our systems, you have to learn how to not react. Okay, because sometimes when bad things happen and you panic, that's when you actually get hurt okay, so you you rub your arm against a discharge line and it burns your arm really bad. And then you Jam your hand and do a running condenser fan motor. That's not good right, so you want to learn how to chill out and keep your wits about you when you're working on things, so that if you do burn your arm, you just got to kind of suck it up and deal with it instead of freaking out And panicking and jamming your arm and a condenser fan motor or whatever you know you can always so you just want to learn how to not react and just be prepared.

Okay, I don't think it's anything to be scared of what the r2 90 stuff. I think the hype about them blowing up and stuff like that, I really don't see it. It's a very small amount of refrigerant. Yes, I have some concerns.

My biggest concerns about our 290 systems are us technicians not following proper procedures? That's my biggest problem because I don't have a lot of faith in majority of our trade following all the proper safety procedures. So that's the my only fear is someone getting hurt. I don't think that the system itself is gon na hurt them. I think if someone is gon na get hurt and I hope that they don't, but I honestly think that it's gon na be something that they did wrong or something that they, you know overlooked and potentially hurt themselves because of it.

So all right, let's see what else, what else do I think they should mix in mercaptan into our 290 to help detect leaks Chris? I think that if there was some kind of an odorant added into our 290, it would be great, but unfortunately mercaptan is a contaminant and they don't want any contaminates. That's why it's a 98 percent pure, if you guys, in the difference between our 290 propane versus the propane that you get from the gas station, is that the propane from the gas station has an odorant added into it to make it smell funny right, because it's Got that sulfur smell kind of, and then they also that the gas station propane is contaminated with a lot of moisture, oftentimes. Okay, it's not very clean, so that moisture would cause major problems in our system. So that's why we have to use a special refrigerant.

You know that that cost more money and all that good stuff. But I know that firsthand because we used to have a travel trailer and, if you'd ever get to the bottom of your propane tanks. That's when your heater would stop working in the wintertime is because there's a lot of moisture in the system and then it would take a long time to purge and dry the system out too. You know so it you never wanted to run your propane tanks low, because that's when you'd get sediment and moisture and stuff like that, so that's just my experience with it and that's how I can understand why we need the refrigerant grade propane.

So hello to everybody. That's coming in here so best way to clean a clogged capillary tube you're, really not going to clean a clogged capillary tube guys. If you have a capillary tube, that's plugged up your yeah there's some things you might try, but the best bet is to go ahead and replace the capillary tube. Even changing just the capillary tube might not be enough.

If I have a severely plugged up system where, like, for instance, I've changed a cap tube and it'll plug up again a couple weeks later, I'm not gon na change the cap tube again. What I'm gon na do is probably change the entire condensing unit, because the oil is contaminated, a lot of times, most of the time when capillary tubes plug up it's, because people aren't maintaining their refrigeration systems and dirty condensers cause high temperatures inside the system causes the Oil to break down, and then the the sludge and different things that build up in the oil also people not following proper refrigeration practices, evacuating the systems changing liquid dry. You know that causes contaminants in the system to plug up capillary tubes too, so I usually give it one shot: change a cap to put a new dryer. If that, if it plugs up again, then it's time for a condensing unit and a new cap tube and then you know obviously dryer and all that good stuff.

So, let's see okay, so next question I had some questions on my my video with the two kitchen ACC's that were down a common one that I get and I'm gon na answer. This one is, is what do i? What do I wear to keep the Sun or to keep myself cool while I'm working on the roof, because I mentioned in that in that video, where I was working on two kitchen ac's - that I got sick from that, and I did it was just a really Hot day really humid, and it just got to me - you can't predict - I mean I was drinking water and everything and it just got to me. I wasn't feeling good for two days after that now I was mean I was hydrating. I was trying to keep cool as much as possible, but it just happens sometimes so what I wear on a daily basis in the summer now mind you, we live in Southern California and we have really low humidity here.

I think today, right now, I think it's a hundred 110 degrees that are how or 105 today at my house, and we have 27 percent relative humidity outside, so it's very dry compared to the rest of the country. We don't know what humidity is in California when we get 40 to 50 percent humidity. That's ridiculous! For us! That's that's insane! So, but typically I wear long sleeve, Dickies work, shirts, okay, they're rather thick, and I also wear a and that's to keep the Sun off. My skin and to protect my arms from refrigerant line burns.

Okay, because that's another thing I used to have discharge line burns all over my arms, so I wear the the long, sleeved icky shirts and then underneath my shirts. I wear a black Under Armor moisture-wicking shirt to pull the sweat away from me and it just kind of hangs out on the shirt. Then I'll wear a an Outdoor Research hat, that's ventilated! It has some vents on the top. I think you've probably seen it in my videos and then I have a head scarf.

I think it's an indirect whole head scarf. That goes underneath the Hat. It's one of those headscarves. It's like a wicking towel.

You can get it wet and snap it or whatever, and it helps to keep you cool cuz. The winds blown against it or whatever often times, I'm gon na be honest with you. I don't even get the the the head scarf wet. I just put it on underneath the Hat just to keep the Sun off of my neck now when it gets humid outside that's.

When my undershirt really starts, I mean when my my long sleeve shirt sucks when it's you know 27 % humidity, just keeping the Sun off of my skin works pretty well, but once we get humidity, that's when it really starts to get me and there's this two Kitchen, a C's down, it was kind of humid for us there's, probably forty percent humidity, so that's kind of why it really got to me. But for the most part I just wear long sleeve shirts there'll be links in the show notes of this livestream to all the the hats and the head, scarfs and stuff that I wear for. If you guys - because I know you guys always asked me that so there'll be links inside that, let's see what else yeah exactly alright. When am i doing a van update um honestly, my van hasn't changed much since my last video, where I said it was kind of started.

It's really pretty much the same I'll see if I can. Maybe sometime do a video where I show, but there's really not much. That's changed. I mean everything's still in the same place, usually you know honesty.

I find I usually get a van to where I really really want it just before I get rid of it and then give it to someone else. My thing is: is that I like to set my vans up in all honesty, I'd really like to give my I'd really like to pass my van on to one of our other guys, because I like to set my vans up. So then that way, everybody is set up that way, so I've actually made two van videos, one on an older van and I've already given that to another technician. So now that's in someone else and then I've got my new van but yeah so nothing's really changed too much with it.

I really still have some ideas on what I want to do, but it's just one of those things I haven't made a priority. So alright, what is a swamp cooler? So a swamp cooler is an evaporative cooler, so we have some kind of an evaporative media that water runs across. This is huge in the the west coast and the deserts out here. Okay, because again we don't have very much humidity, so evaporative coolers are very did for us.

Okay, even in some of the Arizona deserts. It kids even drier than here doesn't stuff in California. So but essentially it's a cooling media that water runs across and then you pre, you bring dry air across it and it evaporates the water and cools the air and blows the air into the building. Okay.

So obviously it would not work in a high humid climate because it would just make it swampy, that's why they call them swamp cores because it would make it feel. You know muggy and nasty inside there, but here where we have on really low humidity, they become very effective. So you can have a actually some homes, not in really not in much in my area, but in some of the drier areas, they'll, actually cool, an entire home with evaporative cooling, the humidity, you might be a little bit high, it might be in the sixty percent. Sixty five percent range inside the home, but you can have very low-cost cooling.

Essentially, our high pressure switch is higher with those extreme ambient temps, 110 degree days with 140 degree, approximate saturation temps in st. to the Northeast yeah. So no, we still use the same pressure controls. I don't know that cut out ranges for 410, a, I think.

It's like in the 610 range, but they're the standard pressure controls that come on everything on the refrigeration systems. We do tend to have to put auto-reset pressure controls on a lot of stuff because, if you put manual reset, when you get those extreme temps, you'll literally be going out just to just to click pressure controls on four or four systems. I set my auto reset high pressure controls to about 450 psi, and you know they typically don't don't trip, but last summer we had 120 degrees, which was an extreme high for us. We set records, we've never had it that high temperature-wise and so yeah.

We were just literally chasing pressure controls all over the place, just resetting them cooling off compressors, because they were just going off on thermal overload in that situation. When you have really really extreme ambient temperatures, you've got a lot of times start considering some kind of cooling for your condensing units. So we might have an evaporative cooler that just blows on them or misting devices which are horrible for your condensers. But you got to figure out some kind of supplementary cooling to get that condensed down any recommendations for rookies on how to improve on electrical skills.

You know electrical skills, it takes time and it takes patience and staring at schematics. You just got to stare at them. I does not really anything. I could tell you over a live stream.

That's really gon na help. You try to visualize things and just do lots of reading a book that I like that. That does help any of the commercial. You know any of the air conditioning books I have behind me like fundamentals of HVAC.

Are those are great books, commercial, refrigeration for air conditioning technicians? Is another great book kind of break some things down and helps you to understand things? You know I wish there was one failsafe way of understanding, schematics and there's not I mean you can break it down. If you want to understand how switches work like just in general, single pull, double pull, switches and things, you can visualize water pressure running through your ladder, diagram on a schematic, and you know a switch opens and closes a valve or it's like a valve opening and Closing and letting water run through the system, but once you start getting into Silla noid coils and different things like that, water doesn't visualizing how water would run through the circuit really doesn't make sense. So there's different methods. You can do I'll try to come up with some ideas, maybe on how we can simplify some electrical training.

I don't know if that's going to happen anytime soon, but I'll definitely be thinking about that so yeah, it definitely gets to us Kano, ka y-you, know. I think that's how you pronounce your name yeah. It definitely gets to us with the heat. You know you just got to do everything you can you got to take lots of breaks? That's why I was telling my guys that the day that I made that video with the two ACS I had another guy working with me and I told him go downstairs chill out.

I was upstairs taking it myself, but I just told him you need to go. Take a break I sent him downstairs. Often you know, go go to you know, hey go pick this up for my van for me, but chill out downstairs for 10 minutes cool off. You know, I'm not saying it's any better for me to be out in the heat, but you know I'm pretty used to it, even though it still gets to me.

So I know one of the things about heat exhaustion. Heat stroke is a lot of times once you start to feel the effects it's too late and you've already gotten heatstroke or different things like that. Heatstroke can be deadly. You got to be very very careful about that.

So you have to know how to listen to your body. I myself was taking breaks too, but still you got to hydrate and I would not suggest I know it's very easy and I've done it too, when you get extremely extremely hot to go jump inside the walk-in cooler. But that's actually really bad for you, because it will actually make you get sick, faster, going from an extreme 110 degrees to 37 degrees too quick and it can shock your body so preferably if I'm gon na go cool off. I go downstairs and I sit in the building 75 76 degrees and just sit there for a little while and just relax and try to veg out jumping in the walk-in cooler.

That's an extreme method, but it can make you get sick a lot faster. So, let's see alright, so I'm gon na go and get to my list here. Oh okay, so someone had asked me about the nav act, battery-operated pump because I had used it in my video. I liked the nav act battery-operated pump, but it I'm gon.

Na be honest with you guys, it's more of a novelty okay. Do I think that you should all go rush out and buy it? It just depends on whether or not you have a use for it. I have probably used my navicomp three times since I got it a couple months ago, not knocking it. It's a great little pump when you use it for a certain purpose.

Okay in the instance that I use it on my two kitchen aces that weren't working in the two York's - that was a perfect situation, because I didn't realize that I was gon na have to bring my vacuum pump up for the unit behind me. I was just focused on the first unit and the unit had refrigerant leaks. It was very low on refrigerant and I put nitrogen in it, so I had to pull the air and the nitrogen out of the system, but I wasn't pulling a deep vacuum. I just wanted cuz, we knew it had leak, so I just pulled moist most of the air out of the system, barely broke micron level and then went ahead and charged the system up because it has known leaks, and there was no point in trying to pull A deep vacuum because I been pulling air in the system, so in that situation it worked great the other instances where I've used it was HVAC our North.

Thank you so very much man. I really appreciate it. The other instances where I used the nav pump has been like when I was driving down the road, and I had a recovery tank that I knew needed to be vacuumed down for a job. I I hooked the nav a clump up and just let it run while I was driving down the road other than that for me again, not knocking the pump it's a great little pump.

But for me it's not really something that I would tell everybody to go by, but I mean it's it's solid. It works great. I, like the the it, has some cool electrical functions to it and that when it starts up it's a ramp up, it's kind of like a VFD almost, but it's not, but it slowly ramps the motor up. It's a pretty cool little pump.

So I mean, if you guys, have a use for something like that. I definitely consider trying it out. So, let's see what else. Okay, so do I need to reborn' service stubs in if you tap into them mmm, HVAC rookie.

I don't know what you're asking me there: can you clarify that recommendations for textbooks for ice machine or Jeff just reference, the manufacturer, reefer tech mark ice machines, you're not gon na find a textbook, that's really going to break them down to you. I would high mean you need to understand the refrigeration cycle. Okay, once you understand the refrigeration cycle, each ice machine is gon na, have their own control strategy and their own method of defrost, okay. So, for instance, on a hoshizaki ice machine they use hot gas defrost.

So they just have to solenoid valves or once Illinois 12 that sends refrigerant to to the HVAC rookie thanks. So much for the super chat. Dude give me some clarification on your question and I'll try to answer that. They use hot gas defrost on a hoshizaki.

They use hot gas defrost on a nice somatic hot gas defrost on a Scotsman. Manitowoc has some hot gas defrost, but they also have cool vapor defrost too, so there's different methods that they use. Some of them run water with the defrost, some of them don't so. The best bet for ice machines is to reach out to each manufacturer and study their service manuals and all their service.

Manuals are available for free online as downloads on each ice machine manufacturers website. So, let's see okay, all right, let me see what else I got in here. Oh our 290 video people were asking if I could work on an insight or if I have to move outside every time. No I've worked on plenty of our 290 systems inside the building.

Okay, there's nothing wrong with that. In my situation, it was just simple and it was a tight little kitchen, so it was easy for me to move the box outside, but you can do it inside perfectly safe if you're doing your r2 90 repair inside what you're supposed to do. If you follow, the instructions is you're supposed to leave your leak, detector running the entire time, while you're venting the refrigerant and anytime you get a high concentration and the leak detector picks it up. Then you want to stop venting it.

Let the refrigerant dissipate and kind of move around the building then start venting it again. Just be careful about venting the refrigerant you don't want to do it in a non-vegetarian. Have some dangerous situations right? So, okay? So if you burn in service ports, when you remove them, so you so you add new service stubs! Oh okay, I see what you're saying yeah. So if you follow the instructions from the manufacturers delfield and true what they want you to do, when you're, when you're working on an r2 90 system is add service ports, then they want you to take the service ports off and put more process stubs back on There yes you're supposed to leave the system as you found it without service ports on it.

Now I'm not gon na lie to you guys and say that I do that every single time there are systems out there that I left with the service ports on them. The only thing I could say is, if I'm doing warranty work, I'm gon na try to follow the manufacturer's suggested procedures as much as possible. Okay, but there is instances where I had an R 290 system. I had to work on it three times and in my opinion, at the factory they didn't do a good job, cleaning the system up and using proper refrigeration practices, because the first time I had a bad low pressure control, just like I did in this previous video.

The second time they called me out a couple weeks later, I had to plugged up expansion valves and it was like what the heck and I followed all the proper practices. The only thing that was a variable was the oil and I added a new refrigerant. So it's just the oil, the oil must have been contaminated in the system and it was floating stuff around, because I had a pressure control, go bad and then too expansion valves and then when the expansion valves went bad. I also changed the solenoid valves too.

So you know in that situation, after that I left the service ports on it, because I felt like I would probably be going back again. Honestly. I never did, but it still does have service ports on it. So you got to do what you feel comfortable with and what your company it feels comfortable with the whole, taking the service, ports off and then braising the line shut.

That is a little sketchy and it is a little dangerous. So if you don't feel comfortable with that, don't do it by any means. Okay, even if the manufacturer wants you to, if you don't feel comfortable with it, don't just make sure your company understands you don't feel comfortable with it either. So there's instances where I left the service ports on the system.

If I'm putting out a video, I'm gon na try to follow as many of the proper procedures as possible just to just to make sure that I'm representing the industry. Well: okay, but I'm not gon na lie and say I'm the perfect person. I you know, I pull the absolute perfect 200 micron vacuum with the perfect decay test every single time and I braised with nitrogen every single time and guys I'm a normal technician. Just like anybody else, okay, I'm not saying that my videos are for show that is my normal service procedures - is to follow those steps, but there's times where vacuums, just not gon na pull down, there's times where I pull a vacuum through my gauges.

Okay, I'm not this on. You know perfect technician. So yeah you are supposed to hang up caution signs ventilate the area you're supposed to have no smoking signs you're supposed to have all kinds of fancy stuff. So I don't know you guys tell me if you're gon na follow all that stuff, I just carry a fire extinguisher.

So but again I'm not trying to downplay the danger and stuff I mean it is what it is. So that's a good question: ryan WK. How do you take service sports off and braze line clothes with our 290 in the system so watch my video and i have an example of how you do it, but I took pinch off tools and basically, with the pinch off tool, leave the line open and Braze the line shut and then take the pinch off tool off, and so the pinch off tool is essentially holding back the flammable refrigerant. On one side it is kind of sketchy so watch my video and you'll see all right.

Let me see okay, so someone had asked me about using r4o for a bee, as I've mentioned that in California, it's technically illegal, on new installations to use are for for a refrigerant, okay or major retrofits, and that is as of 2019. That became a California restriction. So, as of 2020, it will become a federal restriction mandated by the EPA for the rest of the country, the rest of the United States. So I highly suggest you guys look into the rules, but yes, as as it rolls out to the rest of the country, our 404 a is going to become one of the banned refrigerants and it's not like r22, where they're just phasing it out.

They actually are putting in a restriction saying you're not allowed to use it, so is it gon na go away? No people are still gon na use it for a very long time, but it is becoming a restricted refrigerant that the government is gon na, say that you're not supposed to use anymore. So, as of 2020, those restrictions are gon na go into play for the rest of the country. California is just always one of the first people, and what actually happened was that restriction was supposed to go into play a long time ago and when the new administration came in, they pulled back on a lot of the regulations. California said no, no, no you're, not gon na pull back and they jumped in and made their own laws.

So you know we're just our own worst enemy here yeah. I really appreciate it. If you guys hit the like button, it really does help out the stream. So please please hit that like button and thanks so much for the super chats guys, I'm seeing that I know I haven't acknowledged some of those that came through.

So thank you very much all right. So, let's see what else I kind of I have some questions on my sheet that I'm looking at right now about our 290. I pretty much did this. I already answered most of these I'm reading through them.

Okay, so let me get to my next one. Okay, so this is a really great question. Okay, this is from another service technician, I'm not going to mention his name: hey Zack! Thank you very much man. I really appreciate it very, very nice of you, whit frame rate.

Do I use for my recordings? Oh good. One Alex so the frame rate that I'm using for my recordings right now is 30 frames per second. I know that if I switch to 60 frames per second, I might have less glitchyness, you might be able to read schematics and different things better. One of the problems that I have is I film with my phone: it's a galaxy s 10, plus okay, and if I switch my frame rates on my phone, some of the features go away, such as like Auto stabilization, so I can switch to 60 frames per Second, but I found that I lose other important things, so that's why I've been running at 30 frames per second, I am NOT a camera guru guys.

So if you guys have tips - and you have better ways for me - you think could help my filming or my video or my audio feel free to send me an email you're, not gon na offend me. I definitely owe Adam dude awesome thanks, but really appreciate it. Adam so yeah, if you guys, have tips, I'm always looking to improve so send me an email and HVAC our videos at gmail.com. Let me know what you think and keep in mind two guys that in Justin just posted the link right here so there's a link to the HVAC shoptalk channel right now in the bottom of the chat.

That is also the link. Remember that we have the HVAC overtime show on Friday nights. Some of the overtime crew is in here, okay, but then that it's also both of them Zak also has his own shows on his channel multiple times a week, and then the HVAC overtime shows on Fridays. So definitely check that out.

You guys also before I get to this other question, pay attention. If, even if you guys don't watch my videos all the way through okay, I understand you know some of my videos are really long or sometimes they're monotonous or boring whatever. It's all good, if you don't watch my videos all the way through. Do me a favor and fast-forward to the end, just to the end credits, I always recommend other great channels.

Okay, I find new channels new guys that I've been watching coming up. Ernesto has a channel in here he is Ernesto. Oh, I think I got it right here. What is your channel name? Dude ride it in here real quick, I'm forget, I'm haven't drawn a blank right now, but shoot I can't think of his channel name right now.

He'll post it in here and I'll post it, but I always I posted it on the end of my last video, which is the two York ACS, I'm always posting new channels. Okay, you've got Bill's channel a curious, HVAC guy, there's all kinds of new stuff. I'm finding so I'm always trying to promote other channels, because there's lots of great people out there putting out great content guys. So, even if you don't watch my video all the way through fast-forward to the end and just watch the end credits, if you're not going to finish it and and then you can see those links to those other channels, okay really appreciate it.

And obviously spoilin is a sponsor of my youtube videos support them. You check out their channel, consider subscribing to it. You would definitely help spoiling out they'd like to see some kind of feedback they'd like to see channel growth and different things like that on their part. So definitely supports Portland.

Okay, I got to say too. I don't usually talk about spoiling of my live streams. Spoilin is a really cool sponsor in that I don't have to try with them, and what I mean by that is, I don't have to promote weird products. Okay and I'm not knocking anybody else.

Okay, this is just my and I don't mean to be knocking anybody else. That has sponsors and different things like that. But spoilin is easy for me because everything they make. I pretty much support.

I don't think there's one thing that spoiling makes that I don't support okay and, I believe in their products. So that's why I really likes Portland and I don't want to make this a sales pitch because that's not my live streams are but definitely supports. Portland. If you can okay, Matt dude, thank you so very much you guys these super Chad's blown my mind.

I can't believe that you guys come on here. I'm blown away that you're even in here watching these these streams very humbling to see people actually watching these and let alone you guys, take your hard-earned money. That's that's awesome right! It's just beside me! So thank you very much. Okay.

So now to my question: real quick and I'll definitely get to thanks thanks builded, alright. So my question: this was a service technician and he said, and I'm gon na read this question. Okay, it says I was on a split system: evaporator swap out with a 40-year vet. This week it was on a Goodman filter, dryer, conveniently located inside the cabinet.

Oh so he's saying, the filter dryer was in the cabinet and it was raining. The senior tech said we didn't have to change the dryers. If we pump the system down, the unit was leaking, but it wasn't flat and didn't expose the dryer to air and the technician is asking me: he thought the rule was. If you open the lines, then you change the dryer he's now saying that his senior Tex logic made sense.

He said, however, it counters everything he's ever heard and know that vets can sometimes cut corners, especially on hot roofs, cold rain, cramped crawl spaces and hot attics. Okay, he just kept his mouth shut because that's the role he has to play for now and he would just wanted to know my opinion on whether or not I would have changed the dryer if they fixed a leak on a system that was the dryer was Located inside and the technician didn't change the dryer first off, so the person that the part guys these super chats are awesome. Thank you so to the person that sent me this email again, I'm not gon na say his name, because this is a pretty sensitive email. I think he did the right thing.

He was working with a senior tech and he was curious, but he wasn't rude. Okay, if your senior tech doesn't change the dryer its. I, in my opinion, I if I was working with someone because there's been times where I didn't change the dryer. If my tech, my apprentice or someone that was you know, working with me asked me like hey, why didn't you change the dryer? I have no problem.

Answering questions I would explain like look. This is why I didn't change it. I didn't open up the system, whatever it happens, there's times where I haven't changed dryers. The reason why we change dryers - and this is another question I get a lot of times on actually on the two kitchen a/c someone said: hey - you fix the leak.

Why did you change the dryer? It's common practice and we call it cheap insurance to change the liquid line. Filter dryer anytime. We open up the system. Okay, the liquid line, filter dryer, is there to protect our system anytime, we're we're opening the system, we're potentially either contaminating that dryer or we opened it to fix a refrigerant leak or something, and that dryer could potentially be contaminated, and we don't know if we come Up to a system that's flat on refrigerant and we go to work on it.

We don't know if the dryer is contaminated. Now the dryer is not necessarily bad, not necessarily okay, but it could be. A lot of factors come into play was the leak outside. Was the leak in a very high moisture environment? Is it potentially possible that we pulled moisture into the system and plugged up the dryer there's all kinds of variables that go into there? I'm not gon na judge someone for not changing dryers.

My personal preference is to change a dryer as much as possible, but I will say that I work on refrigeration systems and I've shown it in my videos too often times where I have a bad power head on: an expansion valve and the system's operating. And I don't even pull the system into a negative pressure. I just pull it down. You know to about five psi and then change the power head, while the system still has refrigerant in it.

Okay, it's just a very low pressure in that situation. I'm not changing a dryer okay, but if I did walk up to a system that was low on refrigerant and I fixed a leak on it, meaning I let the refrigerant pump it down and in fact you know opened up the low side to you know positive Pressure, basically air or whatever you want to call it. Yes, I would want to change the dryer, but there is instances where it's not practical, so you got to kind of evaluate each case. Best practice is to always change the dryer.

Okay, it's a it's. A cheap insurance is what we call it, so you just you hate to do a refrigerant repair and then not change the dryer and interesting I'm gon na I'm gon na point you out bill curious, HVAC guy. So I have. I watched your your second video on your compressor murder, where you started up the compressor and I was actually gon na reach out to you, but I'll say it on here too, I don't know what I don't know if I finished that video or if there was A third video coming because at the end or at the point where I stopped watching the video was when you started the system up and then it pulled into a vacuum.

It's common practice for me now I don't know if this is what happened in your case or not bill, but again, email me and I'll talk to you more about it, but um. If I have a grounded out compressor on an air conditioner, I'm automatically changing the expansion valve the liquid dryer and possibly adding a suction dryer. But you don't have to necessarily always add a suction dryer.