Hey guys, I was the first time I've done this on YouTube, so I'm still trying to get used to it. So bear with me here, one sec: it's taking me a few minutes to figure out how to start this thing. Let's go ahead and pop this thing. Sorry guys still trying to get used to this.

Someone put something in the chat. Let me see if I can see the chat here, pull this up. One sec sigh guys do one more thing here. Bear with me here bear with me guys I'm still setting something up: real, quick, sorry, I'm not as professional as everybody else.

That's got this stuff going on, I'm just trying to figure out how to get the chat up on Maya on my computer screen here. So, let's just do it this way, professionals, everybody else - that's got this stuff going. Ok there we go that's about as good as they can get all right, guys, um scroll through here, alright, hey everybody, so um. I wanted to cover a few topics, a few things that people have been asking me in the comments that were a little difficult to answer: typing.

Ok, going over that and then I'll answer some of you guys's questions too so Kyle king, you stopped work early for this. What were you expecting? Did you think I was gon na, be this great that it was worth you stopping work for alright, thanks Zach. I'm glad you believe in me. I have a lot more respect for you after trying to set this up for the first time Zach, because this is very difficult, so I must have set this thing up three times trying to get it all going.

The first thing I just want to start off with a really great point that someone had brought up in one of my videos he had mentioned. It was in a video where he heard a noise and how I didn't react, that's something that I bring up to apprentices, and you know people working with me is when you're working in this trade when you're working in refrigeration. You know air conditioning all that good stuff. You do have to learn how not to react when things happen, because when you react bad things can happen.

Ok, if you understand what I'm saying I mean, let's say, for instance, you're working next to a condenser fan motor that running and you brush your arm up against a hot discharge line, and you panic and you jerk your arm out of the way. Well, what happens if you jerked your arm into that? Condenser fan motor okay, you would hurt yourself. So that's what I mean by learning, how not to react same thing when you're braising in you know refrigeration lines and you a piece of copper drops. Let's say you don't: have it supported and you're trying to braise something in and it falls instantly.

Your reaction is at least my reaction. You know initially is to grab that piece of copper because it's falling well. You are just brazing on it, so that coppers really hot. That's what I mean by learning how to not react.

I think it's very important that we stress that to everybody. So that way we can, you know, help to keep some people from getting hurt. Basically, okay, it's a very, very important thing. I try to bring up to people, so someone had mentioned it in one of my videos that you know he heard something drop when I was, I think it was in my r2 90 video when I was brazing the the suction line shut - and you know, is That the shady part of doing working on r2 90, when you have to close up the system after it's all done, and he said he heard something in the background drop and I didn't jump and it's one of those things where you have to learn how to Tune all that stuff out are the noises and different things, so you can focus just what you're working on.

So you can, you know, protect yourself and make sure that you don't get hurt. I think that's a very important topic and a very important point to bring up. So that's one of the things that you know I wanted to cover. Another thing that's been coming up in my videos in mentioning things is training.

I want to reiterate to some people that I don't make these videos and I I never wanted to be a person that made a do-it-yourself video, a how-to video if you notice there's a lot of things missing from my videos. Okay, I don't show you step-by-step, how I'm working on things - and I purposely do that. Okay, because my videos are not geared to be a how-to video. I never want to be that person that teaches a homeowner or a restaurant owner how to fix their equipment.

Okay, so when you guys email me and you say hey how come you didn't show that step? That's why? Okay, because these videos are meant to be number one as an entertainment thing, but number two, as you know, tips and tricks for the technicians that are already out there: okay or people that have finished school that have basic troubleshooting skills. I don't doubt that you guys can learn something from me if you don't have experience, but for liability reasons, I'm not going to show you guys step-by-step. This is how I light my torches. This is the pressures I said I'm at this is what I do.

First, you know I'm not going to show that stuff okay, so I apologize if that's what you're expecting or what you want. But that's not. You know how I'm gon na do my videos, okay, so I'm going to keep doing in the same way that I have been doing and where I show you the very important points that I think can help you and that you know that the tips - and you Know this is how this valve works, but I'm not teaching you. The basics of this is what superheat is, and this is what subcooling is.

Okay, that's just not where I want to go with my channel okay. So that's just kind of something I wanted to point out and bring to everybody's attention. Okay, I'm just gon na kind of go through this little list right here and then I can read the chat and we can talk about whatever you guys want to talk about. So another really important thing that I want to bring up is training.

You know YouTube it's very interesting because I was in an RSS meeting and if you guys haven't already heard and my stuff, I'm very involved in my local are SDS chapter where the arrowhead chapter here in Southern California, our SES is a training organization, its refrigeration service Engineers, Society there's a history about it. It started way back when there was no training, I'm not really good at remembering those details. Okay, but what I like about it is it's kind of like a fraternal Brotherhood in a sense: okay, it's not completely like the Elks Lodge or you know, but I mean it's just a it's a group of guys that get together and we talk about HVAC stuff. Okay, we hold classes, we hold lectures, we organize events.

My chapter does an annual conference every year. This year's topics going to be on psychrometric, so we bring out a speaker. We do all. You know that kind of stuff.

My particular chapter holds meetings. The second Tuesday of every month, here at the local community college, we usually have speakers, sometimes all presents sometimes other members will present. But the point that I want to make is our SES is still a very viable training resource. They have lots of great information.

You can find out more information about our SES by going to our SES, org and you'll. You can track down your local chapters. If there is any, I will say that membership and our SCS has been dwindling off it's kind of sad, because it's a physical training. It's it's it's something that you can go to it's something that you can get continuing education hours that it's something that you can learn at.

So I think it's very important that we we keep those organizations alive and I'm doing my part. But at the same time you know I can see where some people wouldn't want to do that. Okay, but I really think it's a great resource if you guys are interested look up your chapters see if there is one, if you guys have skills and our teachers and educators, you know you can start your own chapters, it's just a great resource. Okay, they are a non-profit, so it's just a great thing to look into if you guys are interested.

Ok, so that's one of the things on my list. I wanted to bring that up and I'm gon na look at the chat here in just a few minutes. Guys, I'm just want to get through this real, quick. Another question.

I've been getting a lot in my videos like, for instance, I just made a video on using a pressure control as a temperature controller. You know I want to point out that I'm not necessarily saying that's, that's how I want to set up my systems on a regular basis. Okay, I did get a lot of feedback from that saying. That's an antiquated way.

That's not the greatest way to do things anymore, and it isn't okay, but we still do come upon refrigeration systems that do that they're, usually small self-contained refrigerators and the point of me making the video is so that I can train people to be able to use Those those systems and work on them, okay, that particular video, I'm going to be honest with you - is for one of my employees that couldn't figure out how to set up one of those controls. Okay - and so you know, let's step back to why I started making these videos, I actually started making these videos from my employees that work with me so that way when they couldn't be with me all the time I could work on some of these strange things And I can show them okay, so that's another point. You know I don't really like those systems that use a pressure, control, a low pressure control as a temperature controller, but they do exist and we have to know how to work on them. Okay, so that's why? I made that video.

I did get questions like you know. Those systems aren't great. Why didn't you install a thermostat in a silhouette valve and just be done with it? You know, that's that's, definitely something I could have done I'm gon na on the next. The next thing I wanted to talk about was, I typically like to keep systems the way that they came from the factory, I'm not a fan of using aftermarket parts on my equipment.

I typically like to keep them. Oh, am there is times that I will change systems over when it really really won't work anymore? I will change it over to you know to whatever I need it to be, but for the most part I like to keep my equipment, the exact way that it came from the factory. So if it came with a constant cut in control, I'm gon na order. The factory constant cutting control and put it back in that box.

Okay, they designed it that way. I try to keep it that way if possible, but I do acknowledge that sometimes some manufacturers omit just make the biggest pieces of junk and you do have to re-engineer it okay. But I don't like to do that if you know, unless I really really have to so that's why I didn't convert that system over to a normal thermostat, adding a defrost clock, but at the same time, had I added a thermostat to that refrigeration system. I would have had to add a defrost clock to unless I put a constant cut and control in there, but then I would have had all kinds of wiring and stuff in it too.

So it's very important. You know. The way that I would say is is lean on your service managers, the company that you work for, let them make those decisions on whether or not they want to be the ones to approve you to convert a system over and kind of Frankenstein it. I'm not saying it won't work, but I am saying that you're gon na run into other problems, so I tend to like to stay om and keep it that way.

Okay, so just one of the things I wanted to point out. Another really really big point of contention in a lot of the videos I make is this, and these are this comes from the refrigeration guys, and this is on defrost clocks, whether or not and it's kind of silly, because people argue about the silliest things. People argue that we shouldn't be using Grassland defrost, timers anymore, or the next guy is gon na argue that no, we shouldn't be using Paragon mechanical defrost, timers anymore, and everybody can make a great argument as to which one's better and which, one's worse again, I'd like To try to stay with the piece that came in the equipment unless there's a problem: okay, for instance, I, like both of those time clocks, they both have their weaknesses. They both are great in different ways.

Okay, a Paragon electromechanical, defrost clock is great because it looks like a clock on the back. It's got gears, it's got a motor, it's got all kinds of you know sprockets and different things in the back. Okay, that make it work right. I don't think sprockets the right word.

I was thinking of George Jetson. There was Spacely sprockets, but um yeah. It's got gears in the back and you can actually see a functioning. So if you want to test, if a Paragon defrost clock is working right, you can kind of pull it back safely.

Energize the system and you can watch the the mechanism in the back move and you know, then you could verify if it's actually working, but a problem with the Paragon is, is they're. Big they're bulky and my biggest issue with a Paragon clock is what I actually covered in the podcast I did with Brian or we're on HVAC school we're in refrigeration. Sometimes I like to do long defrost in the middle of the night, so I have a prep table or a walk-in freezer, that a customer has a high volume of usage on it and I feel the need to put a couple longer. Defrost in the middle of the night: well, if you're anything with the Paragon clocks, the Paragon clock allows you to add several defrost on the type the the face of the clock, but they all have to be the same time.

So they all have to be the exact same length. So you know I want to add a defrost at 2:00 in the morning when no they're in that system - and I want to make it 30 minutes long 35, 40 minutes long, sometimes an hour long. But I can't have an hour long defrost in the middle of their lunch rush during the day, but I still need a defrost in the middle of the day. That's where the grassland clock comes into play because the grassland clock you can change the defrost and make them as long as short within a 15-minute increment.

So it's got a bunch of pins on it that all represents 15 minutes and I could put 15 minutes at 10 o'clock a.m. 2 hours at 11 a.m. I could do whatever I want with that clock. Okay, so that's a great thing about the grassland clock, but the diff aproblem zobelle that grassland clocks is, is they get gummed up with sand? So if they're located outdoors, you know in an outdoor environment, even when they're in there they're weatherproof enclosure, they they get.

Gummed up with dirt and sand that blow so the paragon clock doesn't quite run into that. So I just kind of wanted to address that. That's why I really don't get into that argument too much when people start commenting about both, because I see good things to both of those clocks, and I see bad things too, so I tend to use them. You know if, if, if a walk-in refrigeration unit came with a grassland clock and I'm not having problems with it, I just keep replacing it with a grassland clock and the same thing goes for the Paragons.

Unless I run into a situation where I need more defrost, then it might install a grassland okay. So that's why I don't really address that too much and that's kind of where I I leave that so that way you know, I don't want to get into those arguments with people in the comments and different things about that. Okay, I do try to interact with as many people as possible in the comments is interesting, because I was interacting with someone about Linux economizers for the last probably week or so. We've been going back and forth talk and having a good conversation about how the Linux economizers are set up and the fresh air heating setting and the fresh air cooling setting is a very interesting top.

You know in conversation we've been having, so I like engaging with that stuff. It does yeah. You know I do. I do like doing that.

So I try okay, but then some of the things I just don't touch sir topics just because I don't want to get into an argument with someone I just kind of try to let it be so. I want to look at the comments here, real quick and see if, if there's anything here, that I need to cover I'll step back here, real, quick and just kind of look through. If, if, if you've said something, I'm just gon na go down to the bottom and kind of look at those ones, if you guys have said something, then go ahead and say it again, because that way I don't have to scroll all the way back through the Comments, if there's something you guys want me to address or talk about just say it again down in the bottom of the comments so Alexander, I see that you say you've swapped the motor on one, I'm assuming you're talking about the Paragon defrost clocks, yeah. I've never done that, but I've heard people doing that I've heard people.

I had one guy criticized me because I replace the entire Paragon defrost clock instead of ordering a motor and just replacing the timer motor and it just my customers, don't go for that kind of stuff. My customers don't want me to come back. My customers want. It fix the first time if it costs 200 bucks for a time clock then so be it me having to come back.

Multiple times is not going to be worth it and then, on top of that, the way that I approach that, with a guy who cut you, know kind of criticized me for not changing just the motor on the time clock. I'm not saying you shouldn't, I mean if you have one or two get you through a pinch. You got to do what you got to do, but if I have the choice to replace the entire clock, I'm gon na change it because I'm the owner and in the same thing goes for my employees. I'm gon na tell them the same thing, because I have to warranty that and what happens if there's something else wrong with it to the customers, not going to understand that hey, I changed the motor on the timer, but now the contact is bad they're not going To understand that you know when it comes to a $ 200 part, just change the part and move on, but you know sometimes you got to do things to get you through the day.

I totally understand that I've, you know done plenty of stuff like that. So, okay, I'm just looking at the comments here: okay, Brian Brian, forgive me if I butcher your name, it looks like it's a catelleya or ocotilla. I don't know if I'm pronouncing that right, but you said what are your thoughts on? What are your thoughts on converting low temp case to a medium temp? Okay, so that's a very interesting topic. I have done it several times.

I'm gon na tell you the right way to do it. Okay, the right way to do it is to is to well. Let me tell you the problems that you're gon na run into converting a low temp to a height to or to a medium temp. Okay, low, temp, evaporator coils.

The fin spacing is different on them. Okay, purposely the compressors are bigger because it needs more BTUs or it needs more horsepower. You know at the low temps, okay, so the things you're going to run into is you you might be overheating that compressor, okay, because it might not get the proper suction gas coming back to it to cool the compressor off. I have done systems where I've just used the same compressor and it's worked, but is the lifespan shorter of that compressor? For sure it is okay, it would be worth your while to do some research to find out if that compressor could operate at those temperatures.

Okay, some some compressors have maximum temperature maximum suction line temperatures. So you may see I'd you know. Actually let me pull something up here: real quick and see. If I can pull this, but, for instance, I've got a Copeland catalog right here and I'm just gon na pull up.

You know, let me see if I can pull up the compressor information here and it'll. Tell me the maximum yeah, I'm not seeing it right now. So forgive me for that. I thought I was gon na be able to pull it up real, quick, but I'd have to do some research, but you know in the the specs of the compressor, it's going to say that you know the maximum suction gas temperature.

Is this and if you would seed that, then what that means is that that gas, coming back to that compressor theoretically, is not going to be it cool enough to cool the windings on that compressor. She might overheat it okay, but I've done it and it's worked. Fine, the other issues are electrically going from low temp to medium temp. You're gon na have to rewire that entire box, because you've got to think that low temp is gon na have fan delays on the evaporator fan motors.

It's gon na have defrost termination switches. It's going to have defrost heaters and using the defrost heaters and the fan delays without changing them with our defrost termination switch and fan delay, switch without changing them or without removing them. Just you know just setting the temperature warmer the problem, you're gon na run. To is is that evaporator coil is the the evaporator fan motors are gon na take too long to come on, because, oh no, let's just talk about a walk-in freezer on a walk-in freezer.

We have a fan delay on it and the evaporator typically has to get to about 20 degrees. The coil surface temperature before the evaporator fan motors turn on okay, so, let's say you're using a medium temperature box. It's gon na struggle to get that coil down to 20 degrees. Okay, so your fan motors might not come on very long.

So what's gon na happen is it will eventually happen, but what's gon na happen is you're gon na get a nice layer of frost on that evaporator coil before it hits 20 degrees, and then your fans are gon na come on and you're gon na run into A problem because once you build up that frost and then you know, you may not melt all that frost off, so that's gon na add to defrost issues. So it is possible. You just really really got to think about everything you got to remove all the electrical components. You've got to put a proper thermostat in there.

You might even have to relocate the thermostat you're gon na have to disconnect the defrost heaters. You're gon na have to rewire the time clock so that way it disconnects either the solenoid valve and pumps, the system down and or just shuts off the compressor. So there's a lot of stuff that goes into that. So you know just just be cautious when you're trying to convert a system from low temp to it's a medium temp, okay and the vice-versa is going to be a major problem, because your compressors probably not going to be big enough to go from a medium temp.

To a low temp, but you would have to do that research to find that out. You know when you go to your manufacturer. When you go to your sub, my houses ask them for literature, you know say: hey. Can I get a Copeland condensing unit manual and that shows all the Copeland compressor information? You know.

I have one right here: I'll show you guys Copeland, condensing unit catalog, it's older. I think it's from 2005, but this has all the information on their older convinced units. Now they have newer units this. You know this.

One, like I said, is old, but they have newer units, but all you got to do is ask your suppliers same thing with Tecumseh. You know I happen to have it to come, see one right here, just because I was doing some research on it. This shows the information on all their outdoor condensing units. So all you got to do is ask for information.

You know your suppliers they'll, give you that information. You know, they'll work for you, they'll call the manufacturers and ask for it. You can also find that information online. You know, look up copeland on the internet.

I think you go to emerson climate comm or something like that and you could find you know Copeland's website, there's great apps. You know in the App Store, maybe I'll, do a video one day of all the different apps. I have in my phone that are associated with this trade, because I have a lot of great information in there that helps me to you know to be able to look up this information. You know the that that helps me to diagnose and troubleshoot too.

So you just got to do research. You know, look in your app store on your phone and just look up refrigeration, look up air conditioning and look at all the different apps and then go through and see what you can find. I typically don't pay for apps. There might be one or two that I pay for, but for the most part I don't really pay for apps.

I just use the free versions, but to each their own. Some people may want to app that they pay a couple. Bucks for because it helps them in different ways. Okay, so when I say I don't pay for apps, I mean I'm a I'm a default cloud subscriber you know, but I don't pay for the I manifold app because that's free, but it gives me functionality that you can't get in the app and when measure quick Comes out with their subscription service, I'm sure all I'll probably either switch over to that or use that one too.

So there's a few things that I pay for, but not much okay, most of the stuff! You, don't you don't need to be spending a bunch of money on you can get the free apps. So we look down at the comments here and see what else yeah Northwest Ohio videos, if you guys haven't, subscribed his channel subscribe to his channel. It's a great channel, you'll notice that in the end cards or whatever you call him at the end of my video, I have his channel on there because it's a great Channel so again it's Northwest Ohio, HVAC videos so check it out. He makes videos just like me just from a different climate, different area, so it's got some good stuff on there so but anyways he pointed out that yeah changing from, or he pointed out that to download the Copeland app.

The Copeland app is probably one of the best refrigeration apps out there. It gives you it'll help you to diagnose. Compressors it'll, help you to find out starting components all that different stuff. It's great Tecumseh has an equally good app.

Just look up to come see in the App Store to come, see, compressors or whatever and they're. Theirs has a lot of great information too. In the past, we used to have books that electrical service guide with books that told us all the information for Copeland in Tecumseh, but it's all in that app now. So it really really does help you to troubleshoot and diagnose a lot better and I'm gon na.

Be honest with you, I mentioned it in a some kind of a conversation I had with someone. I have trust issues. I typically do all my own foot work when I, when I call a supply house, I typically already have the part numbers for them. For the most part, I've already looked up to come sees part numbers for they're starting components and looked up the revisions and how many times that starting component changed and what the new number is.

That's just me personally, I like I said I have trust issues, so I do almost all my own foot work, the Tecumseh and the Copeland app greatly helped me because they give you all the part numbers. So I can look up a compressor and say hey. I need a rotor Lock valve for this compressor, because the rotor lock valve is is rotted out. Well, you can go in there and you can look under accessories and boom.

There's the rotor lock valve. So now I don't have to wait two days for the supply house to call me back. I just call him and say hey. I need this.

Rotor lock valve go in order and next day air. I need it tomorrow. Boom done. Ok, that's just me.

Ok, I don't. I don't wish on all you guys, my my OCD anxiety, trust issues that I have ok, but same thing goes for load, heat load, calculations for refrigeration systems. I do it on myself so that way, you know. I know that this system is gon na.

Have you know it was designed with you know, 16 hour runtime or you know I needed less runtime, because I need more dehumidification in that walk-in or whatever I like to do that work myself. I didn't know how to do that in the beginning. It just took a lot of questioning. You know: supply houses and different things, but I'll tell you that in the beginning I used to lean on supply houses for all kinds of help.

I used to call my local supply house manager to troubleshoot things, so there is good stuff that comes from there. So you got you know I if you can find one that you trust, then lean on and but also don't be afraid to question them. Politely. Don't be a punk about it, but be polite, you know hey, why did you come up with that number? What's the TD that you designed my evaporator coil with you know what what kind of super heat or you know how big is this expansion valve? What does the manufacturer say? I should use in this evaporator coil.

You know what you know when I started questioning people, that's when they would say I would say: hey. You gave me a 3/4 ton valve, but this thing's calling for a one. You know one and a half ton, oh yeah, just adjust it all the way this way, and it should be fine. I don't like, should that's not a word that I like when it comes to installing and working on things I like this is what you need.

This is gon na work, so that's when I started doing my own foot work and just kind of looking into things and realizing. So but again, that's my OCD that I do okay. So it's just how I am just looking down at the comments here. Um just kind of scrolling up here, real quick guys just to see what your guys's questions are.

I'm gon na go and let you guys field some more questions in there. If you guys have any more all right, ji Martinez, are you implying? I don't know what you mean by that when did Bryan or get dark hair. Are you implying that I'm Bryan or that's kind of funny? Is that a compliment? I think that's a compliment I'll. Take it as a compliment, so I'm gon na I'm gon na.

Take that I'm gon na run with it. Okay, yeah Alexander, I find people messing with GX vs all the time I find people putting the wrong power. Heads on TX V's, run in medium, tent power, heads and walk-in freezers, yes, it'll work, but is it the way? It's supposed to know, you know like let's, let's put the right equipment in there, you know, and you also to in your size and TX vs for walking equipment. You want to look at the manufacturers recommendations because they've designed those coils with different pressure drops so just because it has a certain BTU.

You want to also ask the manufacturer what they recommend in there, because they also put different nozzles in those some of those coils and they may adjust the valve size accordingly, because of that, so just always lean on the manufacturers and get good with your equipment. You'll. You know you'll pick it up eventually. So Leia, I think, is your name yes Bryan or is a great teacher, I'm just a person.

That's made a lot of mistakes and I've learned from them. So I kind of like to try to relay those to you. I'm not a smart person, I'm not smart in any way, and I don't know everything. Okay, I've just made like I said, a lot of mistakes and I got tired of biessing customers.

You know it's kind of funny, but when I was coming up, I hate it. I hated to tell a customer I was thrown to the Wolves. Okay, a little background on myself. If you guys don't already know, I started working with my dad when I was a little kid, I'm talking to elementary school and I would work summers, weekends, all that good stuff with him junior high.

It was officially I worked every summer and then the high school. I didn't work with him. I decided that I didn't anything to do with this trade and I hated it, and I told him that my dad I said I would never do anything with this trade about a year out of high school, Oh in the middle of high school, I got a Job at a body shop working on cars because I took like Auto Collision in high school and my teacher got me a job, and I worked there for about. You know a couple years in high school and then one full year after high school - and I just looked at my boss - one day nicest guy in the world, but I just realized.

I wasn't going anywhere doing this, so I wanted something different. So that's when I officially started working doing this. You know nine. You know 40 hours a week whatever in 2001 no 2002, as when I officially started doing this, but I had already had you know some background and different things, but I digress.

I I was thrown to the wolves. You know I rode with my dad for a while, and then it was just kind of like hey go figure. It out go figure, it out, go figure it out, and I had a hard time talking to people. I had a hard time telling someone I really don't know.

What's going on, so I came up with some really creative ways of telling a customer that I did not know how to fix their equipment. Things like hey, you know what I got the unit operating. It's working, but it's not working as good as I'd like it to be, and I want to call the manufacturer but unfortunately they're closed, because they're back east, so I'm gon na talk to them and I'm gon na follow up with you guys tomorrow, I'm gon na Come back tomorrow, but I want to talk to them first. That was basically my BS way of saying I don't know what I'm doing it's kind of working, I'm gon na go.

Do some research and I'll come back tomorrow. I did a lot of that. Okay, I don't think I could get away with that kind of stuff. Now things have changed, the industry has changed and people are a lot more demanding, but that was what drove me.

Nuts was being told. How to you know. Oh, you just charge it to these pressures and again not talking bad about my dad or my cousin who used to work. For me they were great people, they taught me a lot, but the trade used to be different.

The trade was very forgiving a long time ago. Equipment was very forgiving. You could kind of get away with charging by pressures and not looking at superheat and subcooling and saturation temperatures and wet bulb temperatures, and you know I mean - was it right? No, but nobody was doing things right back then I mean you know in the early 90s kind of when I was learning a lot of that stuff. That was before I officially started, but I learned the fundamentals back then you know that stuff was was normal.

I mean refrigerant was jit. What is it? It had just become illegal to vent refrigerant, so I mean it was still common practice all the way through the mid 90s of just blowing refrigerant out. That was a normal thing. Everybody did it.

You know I I would. I would argue that refrigerant recovery didn't become a mainstream thing until about the mid 2000s I'd say, even though it was a law all the way back in the 90s, I can argue that it wasn't mainstream until the the mid 2000s, so things were different. I was thrown to the Wolves - I you know kind of had to learn on my own and I didn't like being told you just charged this pressure because I didn't like that. So I started to do research and that's kind of where I made a lot of my mistakes.

I say, and I learned from them: okay, it was cuz. You know there was a. There was a time I called the manufacturer to get some technical support because I was lost and when I was talking to the tech support rep on the phone very nice guy, you know I saw no problems with him. He was asking me some questions and then he said: what's the system superheat and I didn't know what superheat was.

I I heard the word before, but I remember telling him or asking him what's superheat and then all the phone all of a sudden, the phone clicked. He hung up on me. I was so embarrassed because I just called this guy told him. My company name told him my name told him the model and serial number the equipment I was working on and then, when he asked me what the superheat was.

I said: what's superheat, you know like that, I can guarantee you. I never called another technical support person without having everything in front of me and not knowing everything about that. But that was the hard lessons that I learned you know and luckily again coming up in the the that time things were forgiving and I could get away with a lot. Unfortunately, it's not like that today everybody is demanding.

Everybody wants results. Now people don't understand anymore. You know people are not forgiving whatsoever, so they it's just different times now. So all right, I'm gon na scroll down in the comments here I see if a few more came in, I still work with my dad by the way he doesn't work in the field anymore.

Him and I run this company together. We have a few employees and we we we definitely have a different way of doing things. Now that I run because I run the service and he runs the office, that's kind of our dynamic and how we work. So you know the guys answer to me.

The guys talked to me, i troubleshoot with them, and then you know my dad kind of deals with the administrative stuff. I get involved in a lot of that too, but yeah that's kind of the dynamic of how we do things so just kind of going through the comments here, Jean Martinez. This is not beer. You know out of curiosity if I'm drinking beer in a live stream does it is this? Do I have to make this age-restricted? Does this change the monetization of my video because I drink a beer, I'm kind of curious about that Zack? Are you still out there? Does it change anything alright, I'll keep going with a couple of my topics here that I want to cover some one have a few minutes ago.

I forgive me, I don't have your name written down, but someone had mentioned talking about capillary tubes on reach and refrigerators, and this particular person was changing a capillary tube and he noticed that the capillary tube was wrapped around the suction line accumulator. It was on a true refrigerator that is a very common thing to do with capillary tubes. The reason why they're doing that is to increase the efficiency of the box. Excuse me, I call it a poor man's sub cooler, because what it's doing is its sub cooling.

The cap tube, essentially okay, so it's taking the the suction line, temperature of the accumulator and the suction line, because a lot of times it'll be wrapped around the suction line and it's wrapping the capillary tube around it. So you're, essentially trying to reduce the saturation temperature of the refrigerant in that capillary tube, is what you're trying to do so it's acting as a poor-man's sub cooler that also brought up a good point. In my last video, where i talked about the low pressure control, I pointed out that, on a lot of reach and refrigerators, the manufacturers from the factory will run the suction line in the liquid line together in the same insulation. That is a very common thing.

We see in reach in refrigerators, it's not correct, there's problems involved with it and that's why, in my videos, when I'm talking to you guys, I tell you that you have to be very cautious, and I brought this up in several Facebook conversations too. You have to be very cautious about trying to use super heat and sub coin when diagnosing a reach-in refrigerator. Those numbers can be skewed. I've brought it up many times that I say I have a little phrase that manufacturers beat to the tune of their own drum, and that is the truth.

Manufacturers don't follow normal guidelines. Okay, they kind of do whatever they want. You know they. They custom design their systems, so you can't just look at them and assume rules of thumb and saying this is how this system should work.

10 degrees subcooling. You know eight degrees, superheat, that's not the case, because how can you measure the superheat coming back to the compressor when it's running with the liquid line, because that liquid line has absorbed a bunch of heat? So it's you can still use the numbers, but you can't just rely solely on them. I've heard people tell me that oh yeah, I always adjust the refrigerant charge on my capillary tube systems, because the manufacturers never get it right. Yeah.

I don't buy that buddy. The manufacturers design that box to work a certain way now, if it's not working, you know, there's something wrong with it. Maybe the capillary tubes are plugged up, you know, that's I'd, say, probably 90 % of the problems when it comes to refrigeration systems. On cap tubes, you know cap tube systems, is they get plugged up, especially when we were going through that craze of using 134a? Oh what a nightmare, but that's kind of over.

You know. We've still got a few systems out there, but nothing like it was in the 2000s, the 2000s every refrigerator coming into a restaurant was 134a and they were almost all capillary tubes, and it was you know, a good, solid, eight years of changing capillary tubes. All the time because they were plugging up and the reason why they were plugging up was because the oil we can go into that, but the oil was getting thick and you know overheating they weren't cleaning, the condensers. It was using pol - and it was just you know - waxing gumming up inside the capillary tube and causing the capillary tubes to plug up okay, then, on top of that, if you had a really bad system where the oil was, you know really contaminated and really dirty Because of all that heat, then, even after you change the cap, tubes you'd run in that same problem again, unless you change the compressor, because that oil was just a problem.

Okay, anyways. I digress again I kind of got off on a tangent there, but it's you've got to be careful about diagnosing systems just by looking at pressures just by looking at saturation temperatures just by looking at superheat. Just by looking at sub cooling, you've got to look at the big picture. You've got to look at the system as a whole, see how its operating put your amp clamp on that compressor make sure it's not over amping.

You know if you're gon na check the superheat go ahead. Look at your saturation temperatures. You know you can use kind of general rules of thumb that I give about saturation temperatures again. It's a rule of thumb.

You can't always use them. It's a guideline for me. It's not, I don't walk up to every delfield refrigerator that I work on and say my condensing saturation temperature should be 30 degrees over ambient and my evaporator saturation temperature should be 25 degrees under box temp. Not everyone is that way, but I use those numbers to guide me in the right direction.

So I look - and I see am I close to those rules of thumb - is my amp draw good? Is my box coming down to temperature fast enough how's, my compressor superheat? Coming back, is it really really low? Okay, maybe you know so, then I evaluate everything. So, looking at the big picture, you can use those rules of thumb. You can use superheat, you can use soap coins, so it's very important to kind of do that. You can't just lump it in there and assume that you know ten degrees, sub cool, it's good or you know ten degrees superheat coming back! That's good! No! That's not! You can't always do that, so be cautious about that kind of stuff.

Okay, guys. Do your research call the manufacturer on a side note? This is an interesting thing if you called Dell field, and you ask them what the refrigerant pressure should be on this system. They'll tell you: they should be this pressure when the box is down to temperature and that's it. If you call true manufacturing, you say what should my pressures be? They'll say it should be this pressure and that's it.

They don't tell you what your subcooling or your superheat bit should be. They will not publish any of that information. Okay, you can try and you can try, but they won't tell you okay, because they do some weird things: reach and refrigerator. What do they do? With the the condensation coming off the evaporator closed on a lot of them, they drain it into a drain.

Pan. That's underneath the condenser and there's a hot gas condensate loop coming out of the discharge line of the compressor running through the drain, pan first then going into the condenser. So if you fill that with cold water from the evaporator, then the pressures are going to be different in the system, because you're just running that discharge gas through its essentially another sub cooler. Okay, your your DC or your yeah, your taking the heat away from that discharge, gas by running it through a drain, pan full of water again, a reason why you can't just look at one thing: you've got to look at the big picture, so that's a very Common thing running the suction lines: together you notice on reaching coolers that have expansion valves they don't oftentimes insulate the sensing bulbs.

That's interesting because we've been taught to insulate everything, but every single sensing bulb out there, but it's a normal. You know it's one of those things where, so you can't just go by a pressure, or you know just by one diagnostic tool. You got ta look at the big picture and then you got to use some common sense and evaluate it. You know if you're working on a reach-in refrigerator and you've pulled all the product out of it and it doesn't come down to temperature in 15 to 20 minutes.

There's, probably something wrong. So that's a tool I use too, as I kind of in my head, have an idea that I pulled all this stuff out and I plugged it back in and this thing should come down to temperature in 10-15 minutes if it doesn't, and then I notice that The amp draws kind of high ok. So then, maybe I'm gon na put my service gauges on it now. Okay, so you got to kind of use your common sense to look at that stuff, all right, okay, very, very hot topic.

Right now, I'm gon na bring up kind of cross some things off my list: okay drop in refrigerants ooh. This is a hot topic right now, with all of our r22 drop ins. Okay, I'm gon na make something completely clear right now you can never ever ever ever mix refrigerants period. There is no refrigerant manufacturer out there that will publish a document that says it is okay to drop new 22 on top of our 22.

Okay, there's no manufacturer! That's gon na say, put your Rs 40 for whatever on top of our 22. It will not happen because if they do that they're violating they're setting themselves up for a lawsuit, okay, it is illegal for you to mix refrigerants now where's the disconnect here. The disconnect has been our supply houses, our supply houses have not been fed the right information and they in the past. I don't typically hear this, but I know that this is where this is from.

They have in the past, said: oh yeah, this other guy drops new 22 on top of what our 22 and it works fine, or he takes 407 C and just drops it right on top of 22 and it works fine. Okay, your supply house is not a manufacturer, their person, that's selling you that refrigerant do not listen to them. If you want to know if it's right call the EPA, if you want to know if it's right call the manufacturer of the refrigerants okay call Kim Moore's ask them, can you drop this refrigerant on top of this refrigerant and they will say no, you cannot in Fact you can just do a little internet research and you will find out on their websites. It does not mean that you drop it on top of it.

Okay, the term drop in refrigerant comes from when it when we first started using drop ins, when we were placing r12 gas okay, it meant that you didn't have to change components besides a liquid dryer in the system. When you change that refrigerant over you just dropped it in okay, so the proper way to drop in a refrigerant. I don't care which one you're using on you know to replace our 22 is remove everything. That's in that system evacuate the system.

Well, you should change the liquid dryer at a minimum. Okay, because that's just proper refrigeration practices change the liquid dryer. Then you drop in the refrigerant after you've evacuated the system. I should say you drop in the refrigerant you wade in and you use whatever charging procedures.

You're supposed to use for that system, okay, you do not drop whatever name-brand refrigerant on top of our 22 or 404 or 410 or whatever, okay, plain and simple. Have people done it? Yes. Has it worked for people? Yes have I done it? No, but I'm not saying that it doesn't work okay, but I'm saying it's not right is not legal and it's not ethically right either. Okay, recently I took over a new customer, I shouldn't say a new customer.

I have a chain of restaurants that I did work for and I picked up a bunch more locations and boy have I had a mess of r22 droppings mixed with other things. It's been a nightmare and then, on top of that, just common sense, you're working on a package unit has two compressors two stages: if you're gon na change the refrigerant in one of those stages change the refrigerant in the other stage, to make it easier for the Next, guy, okay, and also try to use the same replacement, refrigerant, you're gon na use on that roof, there's nothing worse than having one unit that has one compressor of 407 C, one compressor of r22 and then another unit across the roof that has new 22 and R22, come on, you know, like that's just silly eh. You know, I understand things happen and you got to do what you got to do. But, okay, me personally I've kind of made it known in my videos.

I don't really use replacement refrigerants right now. I had tried one of them and that was our 427 eh. I did not have very good success with it. I used it on a train package unit that had it was a 15 ton package unit that had a 3d scroll compressor in it, and I learned really quick.

Actually I learned the day after I changed that $ 4000 compressor. Maybe it was a very expensive compressor. I learned the next day why you don't want to use drop-in refrigerants on train 3d scroll compressors with mineral oil in them, because you don't get oil returned and when the oil finally does return, it's gon na slug that compressor and ruin the valves the next day. After I changed the compressor, my compressor was bad and then here I was stuck with a very expensive compressor that you know I had to pay for and guess what that supply house that sold me that refrigerant they told me it worked fine, but were they paying For the compressor that I bought from train, no, they weren't so talk to your service managers.

Talk to your business owners. You know, use them as a resource see if they want to go down that path. So me personally, I've used that for 27, a on a couple other systems. I used it on a carrier unit.

It worked good in there for about three years, but then I had a compressor failure. I'm pretty sure it was because of the refrigerant. Then I did use it successfully in a successfully in a refrigeration system, but that refrigeration system already had POA oil in it. Okay, that's another important thing to bring up is: is the refrigerants the replacement refrigerants are not uh are not a lot of them, aren't compatible with mineral oil.

Okay, and if you read the fine print pretty much, none of them are compatible with mineral oil. They add different things inside those refrigerants different HC components: flammable refrigerants butane, different things, different mixtures of it to try to make it. You know work a little bit better. But if you look at there the manufacturers paperwork down at the bottom.

It says it works best with polyester oil. You know not necessarily with mineral oil. It says you know, you have good it'll work, okay with mineral oil as long as you don't have a long line set run as long as you don't have vertical risers. As long as you don't have all this stuff - okay bottom line, that means that it doesn't work with mineral oil because it doesn't get oil returned with mineral oil.

Okay. That system is designed to have that oil flowing with the refrigerant say it. So that's my take on it. Okay guys, so I probably probably pissed off a lot of people by saying that, but it is what it is.

So let me pull this up. Yeah, Oscar, yes, Trane, is very strict on their warranty regarding alternative refrigerants, and it's because you know on their compressors. They don't handle no oil coming back because they rely on that oil coming back to lubricate that compressor properly and when it's not lubricating that compressor. You know you have a problem, so that creates a big issue.

Clay Davis. You asked if I should be running calls you you that's funny, because I actually just got a service call walk-in freezer huh at one of my restaurants. So, yes, I will be running a call here in just a minute, so, okay, all right guys, um, I'm probably gon na, have to close this out. Cuz, like I said I just got a service call, so I'm gon na have to go to work.

So, thank you guys very much for coming on here. I really appreciate you guys taking the time to watch my videos, I'm going to try and do this a little bit more often see what we can do see.