Hello, everybody: how are you guys doing this evening? Hopefully you guys are all doing well. It has been a crazy hectic last two weeks for me, we got like a crazy heatwave that came through and kind of, took us off. Guard we've been, you know, kind of like a lot of the other parts in the country we kind of been having a pretty mild summer and all of the sudden we got for us for our first heatwave. It hit about a hundred and twelve.

You know 113 or something like that, so it kind of just took us off guard and we had a lot of customers that weren't that hadn't been maintaining their equipment and basically all the crap hit the fan and it was just a crazy week. So that's why I missed the stream. Last week it was just a busy one, so I am going to pay attention to the chat here in just a few minutes, but I just want to cover a few things and then I'll start paying attention and looking at that. So as usual guys, if you have questions or things that you want me to topics, you want me to cover or whatnot make sure you put them in caps lock, so I can get to them and I'll try to catch up with them.

Okay, so I have a couple of since I did my last stream. I've had probably four videos now I think right because I missed a stream yeah, so I think about four videos. We had a it's kind of strange because I you know from a creators side, you know I can never tell how a video is gon na do there's different things like I can. I can mainly tell that if I release a video typically - and it has something to do with a walk-in cooler, a walk-in freezer - it will do really well, okay, typically and really well within the first two days.

Is you know, 8,000 9,000 views or something like that? But for some reason I don't know what it is air-conditioned see. I appreciate doing air conditioning videos and sometimes I released videos where I think, oh man, this has some really great technical topics in it and then they just fall flat. People don't tend to enjoy them or whatever reason it is. You know some people enjoy them, but you know it just doesn't attract the masses or something you know.

Mr. Johnny boy. Thank you very much man. I really appreciate it, but I released a video.

I think it was on a carrier package unit and that one's just like I don't know I'd. Sometimes I scratched my head on, but you know why a video does what it does and that one's just like exploding in you know. People are really really enjoying that one, and you know, and for it is what it is. You know I try to share the little bit of knowledge that I have sometimes you know people like to hear certain things, and I guess that's what it is.

So whatever I'm just kind of rambling at this point, so I want I have some things we want to talk about here. I'm gon na cover a few little topics here. I just had a quick question actually came in today yesterday. Actually, someone asked me what condenser, coil and evaporator coil cleaners do.

I recommend okay, so I I really really like using the refrigeration technologies products. Okay, they have their Viper coil cleaners. They make very, very good products, one of the problems with the refrigeration technology stuff. Is they don't make it into all the most popular supply houses and they don't stock them like they do new Calgon products? Okay, I don't want to talk crap on new Calgon because I still do use their stuff.

Sometimes I have to because, if I'm out at a job - and I need a you - know two cases of coil cleaner to do you know four or five ACS a lot of times. They don't have the refrigeration technologies products and I can't stock two cases on my truck at all times. You know you just never know I'll usually keep like a bottle or two of the Viper cleaners, but you know I really like the Viper stuff and the reason why I like it is because it's it's less harsh on the system they're heavy-duty cleaner. It will foam up okay, not as much as like the the new bright stuff, but what it doesn't do - and I really appreciate it is it doesn't itch the coil okay, if you guys don't already know when you're using coil cleaners.

You know some people say well that coils not clean, it's not all shiny, usually if it's shiny - and it turns all like, like brand-new looking metal, it's because it ate the top layer, the metal off its itching it okay and the viper heavy-duty cleaner, doesn't itch the Coil, it doesn't eat the top layer away. Therefore, it's actually safe to be used on aluminum microchannel coils too. So it's a really really great cleaner. It does kind of bubble up.

So you do have to be careful if you're using it on a microchannel condenser. When you, you have to make sure you rinse it well, because it's kind of like using dawn dish, detergent, there'll, be soap, suds that'll be left in the condenser and when you go to turn it back on all the sudden, you'll get bubbles popping everywhere and blowing Out the unit like you having a foam party in Vegas or something so you got to be careful about that huh Travis Whitaker. That was one of the questions that I was gon na answer. That's actually on my list.

Someone had a funny response to your question. Earlier so Travis Whitaker says he's starting Technical School and he wants to know if he needs pants and boots. Or can I wear anything? Someone had answered earlier that you should always wear pants to school, okay and he was joking, something you need to wear pants in general, but you do ask a good question: Travis and okay, here's how I would suggest it. You need to find out the format of your school okay.

I would highly suggest that, when you're doing lab days, if you're going to be working with an equipment that, yes, you wear jean pants and steel toe boots, okay and the school may even require that some, like some of the private schools. They require you to wear a uniform okay, but if you're just going to you know just you just need to check with the school, but it's still best practices to bring safety glasses with you to wear jean pants and to wear boots. Yes, that is a good idea. Now, if you're going just for like lecture class, it may be a little more casual, and maybe you don't need to wear that stuff.

Okay, but if there's any chance, you're gon na be working out in the lab, oh to highly suggest that you come dressed accordingly. Okay same thing: I'm gon na segue into an interview. I highly recommend that anybody that goes into an interview for an HVAC technician: job. Okay, it's different if you're gon na become a service manager or something like that, but for a technician job.

In my opinion, you should go to that interview dressed ready to work. Okay, blue jeans: you know steel toe boots, a shirt that you can work in. In my opinion - and this is just my opinion - it's not really necessary to go to an HVAC service technician interview in a suit and tie it's just unpractical. If someone comes to interview with me - and you know, there's a chance that I really like him like I - there was one person that we liked him a lot and I took him on a ride-along that day and he went to work with me.

So you know it is what it is. But, yes, you should always go dressed and ready for school. So all right, let me see all right seeing if I'm missing anything here, hello to everybody, how y'all doin, I see bunch of you guys are in here. It's really cool, remember, let's put the questions and capslock okay and let me see how we're doing I just want to see how many people are in here at the moment.

So let me go to my video view right here, just one. Second, I want to cover a topic, but I wanted to make sure that most people are in here before I start really talking about it. So let me click on this. Bear with me here guys for one second: okay: there we are right there and let's see what we got going on: okay, cool, so yeah.

We got a good amount of people in here right now, so I will go ahead and address what I want to address. So, as most of you guys probably already know - and I just want to go ahead and cover it - one of our very good friends Zack see Oda had an incident at his house yesterday on Father's Day. I was kind of interesting because we were all waiting for the the the skilled trade up event, because Zack has been on hiatus too, because he's been upgrading his show and doing some new stuff. So yesterday was supposed to be the first day of the skilled trade up and he was going to come back out with his game show and all of a sudden he had to cancel his show.

Okay, if you guys are living under a rock and you've already. You haven't heard yet what happened was Zack actually released a video talking about it, but his house caught on fire and pretty much the entire thing burned down. Everybody was okay, and his family happened to be in his studio with him is what he said on his video. So it's just kind of a bummer, though I mean not that there's any good day for something like that to happen, but it was Father's Day.

You know, and they were just chilling out in his back studio. So thank goodness that everybody was out in his back studio. Nobody was in the house, thank goodness that nobody was hurt, but they still are in a real crappy situation. So I normally wouldn't do this, but I'm gon na ask you guys if anybody thinks that they potentially could possibly help him out.

Okay, anything $ 1 $ 2. Whatever you guys got, I know he's not asking for it, but he would greatly appreciate it. You guys he lost everything. Okay they've got to start from scratch.

Yes, they had insurance. Yes, their house is more than likely gon na get replaced. Yes, they're gon na put him up in a house in the mean time, but it's the little things guys diapers. You know things like that and not yes, he's part of his church, and I know his church is probably to help him too, but you know if we can help him.

I think that'd be a great thing. Okay, personally, I will go ahead and post a link right here to his uh. His gmail account go and put this in here. If, if you guys are interested, you can use this link to donate to his PayPal.

That would greatly help him. If anybody here is interested in sending him a check, because that's what I'm gon na do, okay, I know that PayPal is more convenient for a lot of people, but what I'm gon na do is I'm gon na? Send him a check because nobody's going to get a cut of that. I have his personal address and if you guys are interested in that, I would highly suggest that you guys send me an email to hvac our videos at gmail.com. I'm gon na type that in here and I will share his address with you that way, if you guys are interested in sending him a check, if you guys can't you can't.

Okay, don't put yourselves out, don't put yourself in a position. But if you have an extra dollar or two to share to spare, you know, let's help a brother out. Okay, zach has been a great person for me and doing these streams and he's part of the reason that I can do these streams, because I had no idea what I was doing so I got ta say thank you to him because he was the one that Answered all my questions when I reached out to him to say: hey, you know, how did you do this, and how did you do that? Jack Zach has always been forthcoming and been a really cool friend of me to help me out and explain how things work and stuff. So I'm you know, I'm gon na send him a check personally, just because I can okay and you know, if you guys, can help that'd be great I'll mention it towards the end of the stream.

I have a lot more stuff I want to cover, but I'll mention it towards the end of the stream. Also. So, but I'd really, I know he would appreciate it. Even though he's not asking for it, I know he would greatly greatly appreciate it.

Let's see what else, I'm sure guys that they probably can use help with anything. I I don't know exactly what they need and there's all the other youtuber guys that are friends with Zach are all gon na, say stuff about this too. So we'll know more as time goes on. Okay, but Zach did mention in his video that he does have insurance okay, so we're thankful for that, because insurance will help.

But you just know that things you know it takes a while for all that stuff to kick in. I couldn't imagine you know with you know: Zach has an infinite home. I know everybody's going through circumstances, guys I'm not trying to downplay anything that you guys are going through. Okay, I just happen to have a platform, and I'm talking about what you know that the situation is accent.

Okay, so I I don't want it to seem like I'm telling you guys, you have to donate to him or anything like that. Okay and that's not what this whole streams gon na be about, but I just want to make sure that you guys know what happens so. Alright, let me go ahead and get back to the stream and we'll talk about it a little bit more as things go on guys. Okay, all right.

So one of the other questions that I got is what leak detector do I use, and I keep getting that in all my different videos. Okay, I use the D text select leak detector. I found it to be a great leak detector. I've always used it for a very long time.

Actually, I've probably used that thing for close to 10 years. Okay, I've probably replaced it three or four times over those 10 years, and one of the cool things about the D Tech select is is that the leak detector itself usually doesn't go bad. You just have to buy the new little sensor for it and then sometimes buy new batteries for it and then the little filters for the ends. So I've always been a fan of the D Tech select.

I've heard some people say they don't like it. Okay, so to each their own, but for me it's always worked really well. So alright, I see that there's a conversation going in here and I see that Ralph is answering a question about off our 448 a and p OE oil. I want to get some context to that question.

I see that Jonathan had asked it, so I'm gon na go up in he: okay, Jonathan okay for 48 House polyester oil. If I drop, if I do swap for r22, I tend to keep the oils on mine, but those do wear well, okay, so let me get to the other part of that question here. Definitely want to. Let me read this right here, yeah.

That was crazy. I would share those if I could Justin but Zach had sent me pictures guys of the fire at his house, and it's pretty insane and Justin just sent me some more pictures. It was pretty crazy. I was talking to Zach about it earlier, just through text messages, and I just I don't even know what to do.

I wish I could help more than I can, but you know it is what it is and but whatever you guys do again, you know you can only do what you can safely do as far as financially goes. So don't put yourself out there into a position that you get yourself in trouble. You know only help with what you can help with. So all right.

I kind of want to get into this. This here thing that I see Ralph talking about Honeywell refrigerants. So if you do have questions about Honeywell, refrigerants Ralph is the man to ask - and you know what I always do this - I don't have your email in here Ralph. I constantly do this.

Everybody always ask for your email, and I was forget to put it in there: okay, so our 4:48, a refrigerant, I'm just going to go ahead and talk about this a little bit our 4:48 a is the refrigerant that we have chosen to start using as an R44, a replacement for those of you that are not in California. You guys have an upcoming change with all the different refrigerants. I can't think of what the change is called, but here in California we adopted this change ahead of time. So this July, 1st of this past year, or this this year, right now July, 1st it became illegal to use our 404 a in refrigeration systems, basically in restaurants supermarket.

I think supermarkets were already around, but it basically became illegal to use our 404. A in system change outs system upgrades pretty much okay, you can do leak repairs essentially, but if you have to change a compressor, if you have to change an evaporator, you have to change a condensing unit. You got to change the gas over technically okay, so we kind of have been adopting this a little bit more, so I would say that I've got probably eight or nine systems out there, walk-in coolers and different coolers and freezers that we have changed over to our 448, a and when I say changed over, we did new system installs, so new eve, a pert and new condenser new line sets just kind of want to share my experiences. I really haven't had a bad experience at all.

Okay, the systems were sized accordingly. I will say that in a perfect world, if you can you typically, especially when you're dealing with like heat craft condensing units, a lot of the manufacturers have special requirements that they want you to do, where they'll technically certify their equipment. To be worked with for 48a, okay, so, for instance, heat craft. What heat craft wants you to do if you're gon na size, your equipment, they typically want you to go up one size.

So, basically, if your heat load calculations requires a three-ton, then heat craft kind of recommends that you go through a three and a half ton. Okay, Tecumseh kind of recommends the same thing. It just depends: you have to do the calculations. You have to basically do your load calculation and then they just have to do some some math essentially to find out if the, if it can handle it, but I've also used 448 a on systems that technically weren't designed for 440 a days.

So I had a condensing unit that was scoped to be for 404, but it took forever for him to send it to us. I put 448 a in there. Obviously we put the right TXV the right orifice in the distributor, or I mean the right nozzle. I should say, and everything's working fine okay, I haven't had a single problem with 448 a most of your typical digital pressure, charts already you're gon na account for the glide in the refrigerant.

It does have a high glide, but other than that. There's really not much! You guys need to worry about the only time that the glide is really really going to confuse. You guys is when you're you're, just looking at a paper chart and looking at the temperature pressures, because that you know most of the time if you use your digital gauges or if you use a smart evaporator. It's already gon na account for the glide, and it's going to give you the midpoint I'd love to do a video on that.

But I'm not I'm not confident enough to be able to talk completely about the glide and the proper ways. But I am kind of working on something where we can address refrigerant, glide and and I'll work on something like that. Okay, but as far as 448 egg goes, I haven't had a single problem with it. It's been working great for me.

I will say that there is talk that and in even Honeywell refrigerants and Ralph will tell you too, that if you're gon na be working on low temp, then you need to have some kind of cooling coming back to that compressor, such as a liquid injection to Cool the head of the compressor, something like that: okay, which is pretty typical even for 4:04, especially when you're using scroll, compressors, okay, but most of the for for a scroll compressors out there already have liquid injection but other than that guys, there's nothing to be afraid Of okay, it's just another refrigerant, it's really not a big deal. You just weigh the charge in so if you're working on a heat craft condensing unit, it has a head pressure control valve, so we have to put a certain amount of gas in that system. So it's not just a matter of clearing the sight glass we have to calculate for the winter charge. We just weigh in the charge, usually from the beginning.

We mark the receiver. So that way we know where the level should be. If we ever have a leak, we fill it up to that level again and we move on okay, so really haven't had any problems. So I wouldn't be so afraid of these alternative.

Refrigerants, okay, but where you do want to be careful in, is using like 448 a in a system. It does have to have polyester oil, okay, and you want to be cautious about the expansion valve. So if you're going to use it on a 404, a expansion valve, it will still work, but you will have to make adjustments. Okay, typically, the 448 a has very similar operating characteristics of r22.

So at all, it runs at a very low head pressure compared to 404 a and, if you do, a new install, you're, actually gon na use an r22 valve. It's going to use an r22 power head and the nozzle is just gon na be a little different. But even you know you don't necessarily have to change the nozzle every single time. If you're doing a retrofit, you can get away with using the floor for a novels.

You can just make some adjustments to the expansion belts. Spoilin has some great information on for our 448, a if you just google search our 448 a and sport'ln or you can go to honeywell refrigerants website, and they have a lot of great information there too. So, alright, I want to try to address some questions in the chat. So, let's, if you guys, have put questions - and I haven't addressed him yet, do me a favor and put them again.

Let's try to put your questions in caps, lock. Jo 65. Can you clean your own AC unit or should you call a tech, that's kind of a double-edged sword if you're a competent person, then I think you can clean your own you, but you need to be very careful and understand the risks of cleaning your own unit. First off it's an electoral device.

If you get the wrong component wet, you can get electrocuted so de-energizing. The disconnect switch at your unit isn't necessarily going to de-energize that unit, because there's a 24 volt transformer. Typically, if this is a split system, there's a 24 volt transformer sending power to your contactor coil that does not get de-energized by the disconnect switch outside. So, while 24 volts probably wouldn't kill you.

If you got shocked by it, you can short out a transformer too. If you get the wrong components, wet still I'd be very cautious about hey Justin. Thank you very much man. I really appreciate it.

Definitely I'll talk about it in a minute, but could you clean your own unit, Joe 65? Sure you could? Okay, I'm sure you can find a video on how to do it properly or you can. You can read some information on the Internet. Would it be better to call a technician yeah, because if you call the competent technician, he would more than likely evaluate other things about your system and let you know if everything is operating properly, but is this something you can do? Yes, it is okay, it definitely is, if you do it safely, de energize, the unit inside de energize, the unit outside, make sure you don't get any of the electrical components wet. I can't tell you how to do it the proper way to clean your unit, though, would be to disassemble it and clean it from the inside out, but I'm not going to go any further with explaining to you how to do that, because there's some components, such As capacitors and different things that could still be energized, even when you de energize the circuit, so you do want to be careful and you can still get hurt.

Okay, so, okay, let's keep going okay, Justin Adams had asked me a question. Zip ties are duct tape. Pros and cons of each now Justin to get some context to your there. You go okay, I'm gon na hang on just a sec, I'll type that in hey Justin the moderator Justin.

Can you can you link Ralph's email in here? I'm pretty sure you can, it's Riley he's got it in there. You just got a note for whatever reason I have it turned off to where he can. I don't know if you can handle that or not. I don't know if you're dry Justin, you had said you were driving.

So if you can't do it, you can't do it man, it's all good. Okay, so Justin Adams, zip ties are duct tape. So do you mean, as far as a duct work goes? I'm? Assuming that's what you mean by that and I'm gon na go ahead and talk about that too. There's many other guys that actually Adam is in here a team.

Adam does residential and duct work and stuff, and guys Adams also got where's your name it. I know I just saw it in here Adam I'm having a hard time looking at this chat right now, I'll link it in here, gosh darn it. What I just saw your chat in here Adam, where did it go all of a sudden? I can't see your name anyways 18 Adams on here he's got some great duct uh duct work series that he's been working on right now and I watched you yesterday and is pretty cool okay. So as long as, as far as out there you're right there uh some reason, I couldn't find your name so 18 Adams in here.

If you click on it at the end of his there's three dots at the end of his chat right there and you can go to his channel and he's got some great information. You guys have subscribe to his channel cuz he's doing a duct work series that'll be really cool, but anyways Justin Adams. If you're talking about duct work, zip ties are good. I I'm not an expert with duct work, but if I'm gon na do duct work, I'm going to use duct sealer, I'm going to use zip ties or Panduit straps, and then I I will even use some tape to secure the jacket of the insulated duct.

You know the insulation jacket and then I'll even do a pan to it. Strap around that too, but typically duct tape over the years is going to come off unless you use some kind of duct sealer or something like that to properly fastened it. So just using duct tape on duct work in the Attic is not going to fly because it's gon na back itself off over the years, so Panduit, straps and duct sealer are what you're gon na want to use to properly seal that. But there's many other guys that handle duct work installation and do videos on that stuff, I'm more of a refrigeration guy, so I just know a little bit about that.

Alright, sorry guys! I am really bouncing around with these questions right now. I'm gon na try to get to okay, so reefer tech mark. Do I ever come across inverter units with the restaurant stuff? What do you mean by inverter units, okay, like as in Vita vrf systems? Not really not? Really. We do have like high-tech trained units that have variable speed, compressors.

You know we come across that and we have VFD drives on blower units and condenser fan motors and blower motors and different stuff, like that exhaust fans, but as far as like vrf variable refrigerant flow. Not so much, I really don't come across that in the restaurant stuff. So all right - oh yeah, definitely Ralph Alli Leigh, you said: can I explain more on how identified that the solenoid valve was leaking by using the two pipe clamps on my previous video and yes, I can so. I had a video guys that I released where I had a walk-in freezer the complaint.

Well, first off you have to use everything. That's going on. My original complaint from the customer was that the walk-in freezer was getting too cold. I had previously sent another tech out there and he goes dude everything's working fine.

I can't find a single thing wrong with the box. It was not too cold. Everything was cool, so I told the customer just keep an eye on it and let us know if it happens again, so they called me again and we got some and I asked them to pay a little more attention and let me know some more details like What time does this happen, etc? So, the next morning they called me - and I said, okay, we came in here, we came in at 7 a.m. and my walk-in was at 32 degrees or 28 degrees, or something like that, and they had a bunch of frozen product.

In there - and this was a walk-in cooler so anyways I went out that day and luckily, when I went out there it was doing the same thing I arrived and I think it was at 32 degrees or something like that when I walked into the restaurant okay. I checked some vital signs right away because I was already suspect of the solenoid valve, so I immediately went to my thermostat and I verified that my thermostat was not calling okay and then what I did was I used my pipe clamp temperature, my field piece, JobLink, Pipe clamps right that synced with my manifold, and I put one on each side of the liquid line, solenoid valve okay, and what I found was that one side of the cylinder valve was warmer. One side was colder. Okay.

Now that wasn't the only thing, though, to me there was a temperature drop like it was metering refrigerant. It was starting to get cold coming out of one side of the solenoid valve, but then what I did - and I did not do anything okay, everything running I was trying to very carefully diagnose because I didn't want to correct the problem before I figured out what Was going on so the next thing I did was I went over and put my service gauge on the low side or the superheat port in the evaporator, and I noticed that I had Frost going or coming out of my expansion valve, but the system should have Been pumped down because the liquid line solenoid valve should have been turned off by the thermostat okay, so we knew the thermostat wasn't the problem, so I was really suspect of the liquid line. Solenoid valve and basically I put my service gage on there and I had about 6 psi and then I went on to the roof and this part I know I didn't show in the video which probably would have give us some clarification, but my condensing unit was Still running and it wasn't shutting off, the low-pressure control was cutting out about 4 psi, so it was sitting at about 6 psi and it was running just ever so you know just a little bit and it was causing the system to just run and just bring The temp down below the thermostat setpoint, so by looking at all that stuff, I was able to diagnose that I had a liquid line, solenoid valve that was leaking by now. What caused the liquid line solenoid valve leak by is hard to say, more than likely something was stuck inside the cylinder valve, but what was interesting, and that is that I installed that system probably 10 years ago and really haven't had any problems with it.

I don't even know if we've really done in your refrigeration repairs on it, so but something was floating around in the system. More than likely it got stuck in that cylinder valve, and I did also address the fact that when you're, installing solenoid valves liquid line solenoid valves, you need to make sure that you have the right size, solenoid valve, because it's very easy to put an undersized valve. And/Or an oversized valve and those could cause other issues. Ok, so you got a size of liquid line, solenoid valve via the tonnage of the system and how much refrigerants gon na be flowing through it.

So hopefully that answers your question Ralph. Alright, let's see, let me see what else I got going on here. Soot gets any of these other questions here. Guys, ok, so I see fly Eagles fly, bleed green, you said, and for those that use duct board for ductwork still seal the connections seam and collar holes to prevent fiberglass from becoming airborne.

That's a big thing with duck duck board right. I don't work with duck board very much, but I've always been told that you get little pieces of fiberglass flying around and different stuff, so definitely important to seal everything up properly. So okay, David Lara, says as hot as balls in California and he needs a tee exit. Yeah.

That's funny thanks, but I really appreciate it yeah. It has been a crazy heatwave. You know what's weird: is we had that heatwave last week where it was a hundred and some change? And then this week it's like 85, it like cooled down, and I got my windows open again. It's super cool all right, David, Laura industrial hvac, our commercial as in are you asking which one that's hard to say.

Man I mean you know you can definitely keep climbing the ladder to industrial industrials. Definitely one step above commercial when you get into industrial, you might get into like ammonia systems and stuff and there's definitely some money in that. You know. Is that what you want to do? I don't want to say not to do it because I know some people that do that and they love it.

So, whatever you're interested in you're definitely gon na work on bigger stuff, bigger systems, you're, probably going to be getting into ammonia when you go into industrial. So I say: go for it if you want the challenge all right and let's see okay, so I don't see any more questions here guys. So if, let's let's put some more questions in here, if you guys have what is this directors hold on one? Second, what is this? Oh okay got you I see what that is. I was confused by that link, but okay, I've got some more questions here that I want to answer.

So, let's put this in here, so this was a really good one guys. Someone had asked me make sure I'm not missing anything: okay, okay, so someone had asked me about unswayed in a compressor - and this was a really good topic. So as a gentleman - and he said he just got out of a training class with some technical trainer, I didn't recognize the name, but the way that he said it. I was assuming it was some revered technical trainer guy, not saying anything bad about.

Okay, I just don't happen to know who the person was, but he said he just got out of a technical training with this person and he was at the trainee. The trainer was adamant that you never unswayed a compressor fitting that you should always cut a compressor fitting. I'm not gon na disagree with that, but I am gon na say. Sometimes it's not practical to cut out components when at all possible sure it's always a good idea to cut out a compressor, any kind of fitting right, because, especially nowadays, that we have these alternative refrigerants that contain flammable components.

There's the potential that, even though you recovered the system that there might still be a little bit of a flammable component in that compressor, oil boiling off right, because each refrigerant has a different boiling point, which is why we have something called a glide right. And so you could recover one refrigerant and you might still have some vapor from another one or one refrigerant might be recovered first and then leave over. You know different. So it's very important that you understand that okay - and I was just explaining to the guy - that's working with me right now that we were working on some brazing today at the shop, and we were talking about that and I was explaining to him because I was I was teaching him how to unset a fitting from a compressor, because sometimes you can't sometimes it's a pre manufactured piece if you're working on a small package unit and if you cut that fitting it's gon na, be a pain in the butt to make that weird.

45 on that 7/8 inch line right because it's a pre bent fitting and you just got to do what you got to do. But I highly suggest that you consider your environment. Okay, if you're in a situation where you know slag, might drip off of your braze joint and catch something on fire, then yeah. I would highly suggest that you might want to or cut the fitting before, in pull the compressor out that way.

But sometimes you can't do that. Okay, sometimes you just have to evaluate where you are and know. Okay, I'm gon na put down some wet towels so that slag drips on that. Sometimes you just got to do what you got to do be prepared for a flame out is what might happen if you unswayed a fitting okay be prepared for it make sure you know what you could do to try to prevent a flame out, as you could Purge the system with nitrogen before you know, sweep it really good and make sure that there's no vapor shake the compressor to kind of disturb the refrigerant.

That's stuck in the oil and let boil off okay and then unswept, but even as your unsetting be prepared that when that compressor fitting comes out, there might be a little flame that comes out of there. Okay, so if there's anything flammable around you, you want to be cautious about that and be ready for it always have a fire extinguisher a water hose. You know, but you got to be careful too, with the water hose or a spray bottle, because if the oil ignites right water's necessarily not going to be the greatest thing to put that fire out with right, so you want to have the proper protective equipment. Essentially, a fire extinguisher that can put out an oil fire or different things like that.

Okay, we say that it's really not like I mean if people do their jobs right, it's really not that big of a deal, but it's definitely something that you want to consider. Okay, the systems that I work on for the most part, I'm the only technician and we're the only service company that works on them. So I know they don't have any of these weird alternative. Refrigerants.

Okay, where you really want to be cautious with, was a while back. We had this company that came out right. I think you guys have heard the stories and they were basically selling pure propane to our 22 customers, saying it would work fine and while it does work, we have a problem because the next guy that goes to unswept, that compressor doesn't know that they had fruit. You know propane in there not propane still in the oil, and you go to light that and you get a pretty good flame coming out that compressor.

So that's when you really want to be cautious, okay and it's something we got to think about a little bit more these days, as we run into more of these alternative refrigerants that do have flammable components to them. You want to be cautious and make sure that you're, following all the proper refrigeration practices, when you're lighting a torch when you're doing anything, okay, all right. Let me look at this. Does our 290 boil out of the compressor oil as much as other refrigerants yeah? It does so I have a video reefer tech mark where I think I only have like one video with our 290 right and I'm changing a compressor and I went ahead and showed you guys.

I purge the system with nitrogen. The system was completely flat and the compressor was taken out of the system. There was no compressor, the compressor was completely unhooked and I had to unswept the dryer due to the situation. So I had cut the compressor out because I could, but I had to unswept the dryer and I went to go unswept the dryer right and I had the solenoid valves open and everything and there was still vapor inside that system.

When I waved my torch across the open line it ignited, so in it the compressor wasn't even in the picture and the vapor that was still stuck in that system ignited. So you do have to be cautious, especially when you're dealing with our 290 or our 600. Those are the ones that you want to make sure that you're purging the system you're agitating the compressor while nitrogen is flowing through it, you're cutting as many components as possible out and keep it in mind when you're working with systems. That might have alternative refrigerants too, because you never know I mean if you work on a brand new system or you know other people have their fingers in there.

You don't know what they put in there. So, yes, you got to be very, very cautious. So, let's see what else am i changing the TXV on the walk-in freezer from this morning's video, Rafael Gomez, honestly, I haven't even gotten to that one. Yet i defrosted that system and we haven't had to go back out since, but it is on my list.

I just haven't had a chance to get out there, so, yes, I am more than likely gon na have to change a TXV. That was just my assumption as to what was the problem on that walk-in freezer, but we're gon na go out and do a proper evaluation, so I haven't even changed that low-pressure control, yet either things still running so, yes, I will get to it. It's just one of the things I haven't gotten to yet we just I've been busy. Lately it's been hard, so Jacob ciphers.

I think that's how you pronounce your name. Have I noticed quality issues with the white Rogers walk in stats, Jase Jacob, I'm gon. Na be honest with you dude, I wouldn't trust a white roger stat just because I'm not comfortable or familiar with them. I don't want to knock them.

Some people may love them, but my go-to thermostats for a system is a is a Johnson pen or pan Johnson or these days, the the key to therm digital thermostats, any of the mechanical ones. I'm trying to get away from mechanical stats in general. But if I do have to choose a mechanical, I'm going to use like an a 19 Johnson pan mechanical stat - I don't like my preference. I don't like the the you know, the emerson ones or these weird white rogers ones, and just not a fan of them because I'm not comfortable.

I don't use them very much. So do you need special tools for our 290 equipment? Yes, you do yeah. You need some special tools and you also need to follow a few extra steps when you're you're properly working on a system, so definitely something you want to do and research. What I would highly suggest you do is Google search true manufacturing, Google search delfield manufacturing, both of them are refrigerator manufacturers that are producing a lot of our 290 equipment right now.

They all have training videos on their website. If you can, if you are a member of our SES, I would highly suggest our SES has a hydrocarbon training class. It's a webinar in series of videos, very, very good information, and it's going to tell you the proper practices for working with our 290. The biggest issue with our 290s - you have to remember stuff - is flammable number one thing that it's gon na throw everybody for a loop as our 290 is completely legal legal to vent into the atmosphere.

You can let it go into the atmosphere. You do not recover. It okay, you especially do not use a standard recovery machine. Now, if you are in a sensitive environment where you can't release it into the into the atmosphere such as like a hospital or something like that, there is recovery methods, but you're gon na have to do some research, because it's not a typical recovery machine.

Okay, they have special, like filter systems that basically pull the flammable components and different things out. Okay, you typically won't find service fittings, so you'll have to add service fittings to our 290 systems. You have to use a special leak detector for our 290. It's a combustible gas leak detector and when you're all done, if you follow the rules - okay, not everybody does.

But if you follow the rules, there's not supposed to be service fittings left on that system, when you're done either so you're supposed to cut those fittings off seal them up, whether you braise them or use a mechanical fitting and leave the system without fittings. When you leave now, you know that's a questionable thing, but yes, our 290 is different and it does require different tools. Okay, what is the worst refrigerated gas? I I really can't say which one's the worst dude I mean they're, all just a refrigerant bare downs yeah. I was up until recently I was a really big fan of the Ronco et Cie 111 thousand, and it still is one of my favorite stats.

The only thing that's missing is defrost. If it had defrost, it still be a really cool stat, but you know it doesn't until they release defrost in him, but the Ronco et Cie 111 thousand and my favorite is the one 41,000, because the one 41,000 is multi volt, it's a NEMA for enclosure. So it's technically water-resistant, so it works best and walk-in freezers and different things. So all right! Okay! So I see someone talking about Ralph from Honeywell, saying that a r2 90 refrigerant comes in 16-ounce cans yeah.

Our 290 is typically sold in small canisters, okay and the reason why they do that is mainly is because of shipping reasons is the way that I've been told, because it's hard for them to ship 30 pound drums of it. But it's also unsafe to carry a 30 pound drum. Someone had also asked me in my email questions today, whether or not I keep the are 290 in my trucks and I'm assuming they were asking me because it gets hot in the summertime and yeah. I do keep our 290 in my truck.

I keep one to two cans typically, but you know, as the crazy summer days come and we had 120 like we did last summer. You know it's probably getting when my van has stopped and sitting in the Sun. It's probably 140 hundred and 50 in my truck. That's probably something we need to think about is keeping a canister of our 290 in there, because that that sounds a little unsafe right.

So that's something we need to to take into consideration when we're working with these flammable refrigerants is where we're storing them and how hot it's getting in our trucks. So when he asked me that question it was kind of like I did, do a double-take like wait. Why wouldn't I go? You know why? Oh yeah, I really thought about it. Maybe I shouldn't be keeping those in my truck.

You know, especially when we get these crazy, crazy hot days in the summer. It's something to think about. So alright, let's see what can I please explain how you bypass the reversing valve on the air conditioner. The tito 209 asked me so I had done of ad or I had actually done a Facebook post saying I can hack with the rest of them.

So what happened - and I didn't make a video of this - but what happened was I had a customer that called us and they said they're their heat pump wasn't working. We have a few heat pumps here in California. It was a little residential system. We don't do residential work per se, but it's for a storage facility anyways, so they called us said their a/c unit wasn't working.

I wasn't the tech that went out. One of our other texts went out there and he called me and said: hey. Do this thing's flat and what had happened, was one of the pressure equalization lines on the reversing valve had cracked, which is a common thing that happens and it leaked out all the r22 refrigerant. This was a very system, so we quoted them a repair and we gave him a very, very strong, nudge and said: hey.

You really should consider replacing this system because the repair was stupid, expensive for like six pounds of twenty-two, a new reversing valve a bunch of Labor, because it was a pain in the butt to change the reversing valve, as we all know right and they decided to Go ahead and replace the package unit. Okay, so we quoted them, they said. Yes, we ordered the package unit and it was gon na take like two weeks to get it and no, I was gon na take a week, and so we waited the week right. They were, they were doing.

Okay. This was before the heatwave, but then the heatwave hit and they were dying, and so we got the package unit. Finally, the replacement one and it was damaged and we're like for real okay cuz. This we were trying to order.

The direct replacement - it was an older package unit so anyway, so it was damaged. So I was like well, we got to go with a different unit, but we're gon na need some duct work to make it work, so I had to go over there and get the unit going temporarily. So what I did the system was completely flat. Was I completely cut the reversing valve out of the picture? If you understand how reversing valve works, it just reverses the flow of refrigerant from the discharge line in the suction line.

Okay, so the discharge line normally basically goes whoo your condenser right. Well, with the reversing valve. We can choose to send it the opposite direction to reverse the flow of refrigerant. So what I did was, I cut the reversing valve out and I put in a ninety and made the suction go directly to the suction and made the discharge go directly to the condenser and it was no longer a heat pump anymore.

Okay, it was just a straight cool unit, so then I just pulled the vacuum on the unit and because we were changing the unit even changed a dryer. I pulled a vacuum and put some refrigerant in and I didn't use our 22 refrigerant. I used one of these drop ins that we had at the shop which I'm not a fan of, but I did it for a temporary replacement. I used our 427 a just cuz.

I had a drum and put it in there temporarily and it got him through. Ok, so we did that and it got him by you know. So sometimes you got to do what you got to do to help the customer out. So most of my customers, I give them the option, I say hey, we can go with some of these alternative refrigerants, but here's the deal we need to change the oil.

We need to follow these steps. We might have to change it TXV. We might have to do this and usually they choose to not go that path, and they just want us to use our 22. I am NOT a fan of winging it and in one of these refrigerants that they say will work with mineral oil.

Okay, because, in my experience typically any of these alternative refrigerants for r22 typically need polyester oil. Okay, they they do add. You know other gases. Basically, the lot of flammable component they'll either add like isobutane, usually or something like that to the system to try to or r32 or whatever to try to make them be a little bit more compatible with the mineral oils.

From my experience, this is just my little bit of research that i've done, but they typically work best if they have polyester oil. So my choices is that if i'm going to use an alternative refrigerant, i am gon na use it with polyester oil. So to do the repair the customer's going to be given a quote to change the oil and the compressor and evaluate the system after we put the refrigerant in whether or not we need to change the expansion valve or adjust it or whatever. We need to do so.

That's just my method of doing it, guys not saying you guys are wrong for doing it. Your way, that's just my way because as a business owner, I'm selling this customer on this repair and I want to make sure this repair is gon na work. So for me to feel comfortable with the repair, I'm gon na change the oil. If I'm gon na use an alternative refrigerant to r22, all right, let me go in here, so, okay, W Wolfe, seven, seven, one one, seven seven! You said true blue evacuation hoses.

If you pull a vacuum too quick, doesn't it freeze? So there's a lot of controversy about pulling a vacuum too quick. I am NOT the smartest person in the world okay and put that out there right now. I hear a lot of information and I take tend to absorb it and - and I can repeat a lot of it. Okay, I too thought the same thing that if you pull the vacuum too quick cuz, I was always taught if you pull the vacuum too quick.

It would cause problems, but we've been told over the years and on our way of thought, has been changing and shifting. Okay and it's from my understanding, it's pretty much impossible to freeze moisture in a system as big as what we're working on. Okay, especially with the warm air that's going across, it there's a lot of other people that have great information to say about it. I believe even jig, Jim Bergman has a video about it too, where he talks about how hard it to actually freeze moisture.

Now I know that we've all seen the experiment where you take a mason jar, you put a little bit of water in it and you put a vacuum hose and you jb weld the top and you turn it on and it starts to boil and freeze and All that stuff, okay, but that's a pretty interesting, almost a controlled environment right, but our systems are a lot bigger and it's really hard to basically freeze that moisture. That's in the system, okay, but on top of that, your liquid dryer should be capturing that moisture. Okay. So it's kind of been you know, debunked or whatever.

If you want to say, you know that you're gon na freeze the moisture in the system using true-blue, okay, but again you know we should lean on some other people. That know a little bit more about that. I feel comfortable using true-blue. It definitely helps me.

I've never had any problems. Even when I was using my a pion kit never had any problems. I will say that the science that we've been using with vacuums and the understanding that we have with an evacuation on a system we need to change our methods of thought guys. You know even for many years, I evacuated through my manifold and it's not the best thing to do in the world.

We've kind of realized, okay and we've realized that the micro engage that comes in your manifold is not that accurate when it compares to the micro engage that might be somewhere else in the system. Okay, you typically want to put your micron gauge downwind from your pump farthest away in the systems. If you can. Okay, so put it on your liquid line, pull through your suction line, something like that.

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