Ah, it's time to chill out and get ready for a mediocre. Qa live stream if you're old enough grab yourself your favorite adult beverage and if you're not stick with apple juice, put your feet up and relax. If you have any questions, feel free to ask them in the chat and now, let's queue up the intro music hello Happy New Year, Merry Christmas, all that stuff hope you guys are doing well hope you guys had a great holiday over at my house. We did it was just a nice relaxing holiday, nothing too crazy, no drama which was super nice and we're just gon na have a real low-key New Year's Eve tomorrow.

I think my wife actually has to work so yeah we'll be doing that for those of you that are tuning in for the first time. My name is Chris and I'm an HVAC ER service technician here in Southern California. I make these YouTube videos to share the little bit of knowledge that I have. I do.

These live streams Monday evenings at 5:00 p.m. Pacific time work permitting. So what that means is, as so long as I can get off work in time and get home I'll, be doing these streams. So that's the plan so feel free to ask questions in the chat.

Do me a favor throw them in caps-lock? We've got my gym. Moderator Justin and they actually have a couple moderators in there, but Justin will help me to field some of the questions and you guys can always send me emails too HVAC our videos at gmail.com. I see well thanks for the support, Ralph and Clint. Thank you for the super chat, Joe.

Thank you for renewing your support. I really appreciate everybody. Okay, every little bit helps, but it's not expected. Nobody needs to support me.

Nobody needs to donate. I'm gon na keep doing these videos and these streams, no matter what okay. So I really appreciate it it's kind of funny, because I think that it has been officially. I think it was a full year of live streaming as of November.

I think I think November of last year might have been my first live stream, or maybe it's been longer. I don't know I lose track of time, but I think it was November of 2018. I think yeah anyway, so but um. I look forward to the new year look forward.

To I mean I don't really have any major changes planned or anything like that. Obviously we always try to better the next year from the previous right, but I'm very fortunate and you know cross our fingers. Everything's been going well Jeff. Thank you.

So very much for that super chat, Joe thanks. I really appreciate you guys. You guys are super awesome man, but yeah. You know I just the plans for the new year for for next year is just keep doing.

I'm doing. Obviously, we are looking forward to the HR show in Orlando in the end of January, beginning of February, and then with that being said, I'm gon na be at the HVAC school training conference. I don't know what you call it that Brian or is putting on so I'll, be a speaker at that soon, that'll be the Friday and Saturday before HR and if you guys don't already have your tickets. I heard Brian say yesterday that the event is completely sold out so, but I'm sure in some sort of fashion, there's gon na be some sort of like a stream, maybe not of the entire event.

But if some of it so should be able to see some of it - and you know everybody plans on recording the the speakers at that event - are gon na be way beyond me. It's gon na be so cool. I'm just excited to be able to go, let alone to be asked to be a speaker. It's kind of a trip so anyways we'll see, but God, as usual, got a little list of stuff that I want to cover, and then I definitely want to get to your guys's questions in the chat.

Okay, you know I try to make this make sense to you guys when I explain things I try to break it down to where you know. People can understand my explanations. Okay, I'm not the smartest person in the world, but I like to when I have a hard time understanding something I like to make sure that once I do understand it that I can maybe help the next guy so that way he doesn't understand it. So I certainly don't know everything, but I try to answer what I can so all right.

I definitely see a bunch of a bunch of questions and different things, but let me see what I got going on in here so again, guys there's so much going on in the chat that if you got questions, please put them in caps-lock, okay. So what I want to start off with is oh, really quick. I want to get this over with, because I had a lot of comments, so I had shared something on Facebook, with that spore Lynn had shared a post where they showed their PT app that they have a pressure temperature chart app right and a couple different people Came back in the comments like hey the app doesn't work, it's really an easy, but you just have to get past the insulation guys, so I'm gon na pull up the app real quick, because I wanted to do this before I forgot just because of how many Questions we had about this, so what I'm gon na do is I'm gon na pull up the app and I'm gon na pull up a screen, show real, quick and I'm just gon na show you guys something really quick. It's super simple, but I want to make sure that everybody understands how to do it.

So what I'm gon na do is I'm going to transition to a screen capture and let me turn this off and let me turn this off and transition this over all right. So what I'm using here, I use a Samsung phone, and this is a window using the Samsung Dex app, which basically just mirrors my phone on my computer, okay. So this is what the home screen of my phone looks like, and what I'm gon na do is. I'm gon na open up the spore Lynch ill master, PT, app, okay, bear with me guys, I'm just showing this out, and obviously you can see that it's in you know, phone mode or whatever.

This is the screen that you get when you open it up, and I I guess I understand the confusion, because when someone clicks on PT look up right here, what pops up is are twelve refrigerant. This is pre-populated into the app and you have to you know, figure out how to go past that well, if you push on the drop-down right here, it only gives you the option to do R, twelve refrigerant, which okay, I get. Why that's confusing? So what you do this little star right here - click on the star and you need to favorite the refrigerants that you want to pop up in the app. So for me, I deal with one thirty-four a refrigerant I deal with r22 refrigerant, I'm gon na go ahead and select the ones that I use hey check this out.

They even have a different slider for bubble, point and dew point when you go into the blends. Okay, so we're gon na go to 404 refrigerant bubble and do and we'll go ahead and call it at that for now, okay and then we hit save and then what it does is when you go ahead and go back now on my drop-down, I can select Between the different refrigerants, okay, guys, remember the difference between bubble point and superheat or a dew point: okay, you want to use dew point when you're calculating superheat and you want to use bubble point when you're calculating sub cool. Okay, so keep that in mind. But that's the whole difficulty people we're having a hard time getting that and I get it there's not an instruction that tells you how to do it.

But I just wanted to point that out, because I kind of felt bad because I shared a link to this and then people were like questioning everything. So it's really not that big of a deal just got a click on that okay, so I'm gon na go ahead and close that out and we're gon na turn off the screen share and then I'll go ahead and bring up my normal screen and we'll get Back into everything, if I can figure out how to work my app right here so there's that and there's that and there I am and let me go ahead and turn the display capture off and we are good to go all right. So let me click this off my screen right here and I can get back to my list of things to talk about. So, let's see what else we got going on here, all right, let's see if we got anything in the chat before I get too lost from the questions.

Okay, again, I'm looking for questions and capslock guys. Okay, let me see - and again I'm just scrolling through r32 is popular in na. I don't know is that Netherlands, I don't know na yeah r32 is a refrigerant, that's being used around the world. It's not super popular in the United States as of yet, but I did hear that people were gon na start using r32 in mini splits.

I don't know, if that's the case for sure, but right now for our we're in refrigeration. We're dealing with our 290 is kind of the new one coming in. That is our hydrocarbon refrigerants, a 1. So how do I feel about side work? John gorath II asked that question.

That's a good question, John, so I look at it from two two ways. Okay, I can remember when I was just a service technician, but also I'm a business owner, okay, so as a business owner, I can't control my technicians on their personal time, but I can be a hundred percent sure and why I you know the rules are that There better not be any side work that competes with us period. Okay, they can't be a conflict of interest between the technician and us, but also my service vehicle, my tools, those are mine, those are not for the technician to use on their personal time ordering side work now other companies have different policies. Okay, I understand if a technician needs to go help his mom or his brothers best friend.

All they need to do is talk to me and we'll work, something out. Ok, but the big thing is is that if a technician is going and using my tools, my van my likeness, that kind of stuff - and they look bad, then it reflects badly on me and that's a problem. Ok now another thing that is completely unacceptable at our company is, let's say a service technician on his personal time, wants to go: try to fix something at one of our restaurant managers, homes. That is completely unacceptable.

You do not mix that because that's work, if you do something wrong at a manager's home or you know something like that, you guys get what I'm trying to say. Then it reflects badly on the company. So I'm not a fan of side work, but I understand I mean some people got to make a couple extra bucks and it is what it is, but so long as it's not on company time, not using company resources or not making the company look bad. So that's my opinion at least Ralph.

You said you're planning on buying the field piece probe. Should you buy now or wait for the new model? As far as I know, Ralph there's not going to be a new model for the field piece probes anytime soon. I can safely say that I have not heard a single thing about a new model of field piece probes so and I don't know everything about field piece, but I do have some insider information and I have not been told anything about new probes. So I would say that if you're considering buying them find the best deal and go for it all right, so let me see what I'm missing here: um favorite micron vacuum gauge.

I've used! Ok, so I do not know how to pronounce your name Hashimi, I'm not even gon na I'm, not even gon na try bro sorry. So the micron gauge that I use again, I'm not passing judgment on anybody else, but I use the blue vac professional micron gauge. That's what I've been using and I really like it. It works really well, the cool thing about the blue, vac, professional or any of the blue vac micron gauges, but in general, is that they can handle positive pressure.

So if you're, working with like probes or you're doing a system where you know technically again, this is kind of getting a little crazy. But when you go to take a micron gauge off of a system, that's in a came before you charge it theoretically, you're pulling air into that system for ass, like you know, millisecond, but that is air. So the cool thing about the blue VAT gauges is, you can go ahead and charge the unit up, put your holding charge in there dump the gas in on your high side. Let the pressures rise up.

The blue vac can handle it. So I really like the blue vac and the blue vac has a cool app too so, and it works really well. So all right, let's see what else I got am I taking tomorrow off no Scott, I mean we're gon na work right now. We're kind of slow, so you know like today.

I think everybody worked kind of half-day, so you know what well, depending on the call schedule you know someone might take tomorrow off. We did the same thing for like Christmas Eve: it's not a paid holiday. On Christmas Eve, but I think everybody took the day off or no III, myself and another tech work half a day on Christmas Eve, so so the holidays are always kind of funky. I'm gon na be honest with you.

I mean I really enjoy spending time with family, but I am ready to get back to normal, I'm ready for the new year to start, I'm ready, for you know a new quarter to start so restaurants start spending money again. I'm ready just to get back to normal. I have a bunch of installations that we need to do and we've kind of been holding off, because the holidays are always kind of screwy, so I'm just ready for things to get back to to normal. So I don't know how many times I can say that all right, let's see what else um hydrocarbons are the best drug humanity ever created.

I don't know what you mean by that one: Molly a lot of people like hydrocarbon refrigerants. I mean it is what it is. Here's my take on all these different refrigerants right. You know thirty years ago, r22 or r12 40 years ago, r12 was the saving grace.

It was the best thing since sliced bread right then 10 years later, r22 is the best thing since sliced bread, then 404, then I mean it's just like there's always something new. So is there one that I'm, you know like more than the other, not really just just sit down and buckle up, because you know are too 90s this year are 448 a is this year next year, something totally different they're already talking about. You know phase-outs for 410 a that one's coming too. So I mean it's just just sit down and buckle up.

I wouldn't be afraid of it, but you know I'm not gon na pick one! That's my favorite, because they're changing so fast. Now that you know, I'm sure that we're gon na figure out that you know the the resources using all our 294. The world is going to deplete whatever and you know who knows so, but while I'm on the topic I'll actually go in and segue into something else too. Okay, so today I'm working with a particular restaurant chain and they buy their own equipment.

It's just the nature of the beast when you're dealing with national chains - okay, it's how it works, so you just get used to it so they're buying their own equipment and the equipment is shipped from a distributor in another state in the US here. Okay, so California has some very stringent refrigerant regulations as of January 1st of 2019. So last year it became illegal to use r4o for a refrigerant on any new major retrofit and/or new installations of refrigeration equipment, walkins and stuff. Like that reaching coolers, the phase-out was a little bit different, but talking about walking so anyways, I have a restaurant customer right now that they authorized some replacement of some equipment and the manufacturer, the the the rep that was going to ship the equipment.

Emails me and says today: hey you, know, Department of Energy says that you can use this new roof or you can use 404 as long as the equipment was made before 2020, and that is not true, okay. So the reason why I'm bringing this up guys there's a lot of misinformation and - and I don't blame the manufacturers representative - that's selling the equipment - I don't blame them because the rules are so confusing to understand. Okay, so the manufacturers representative, that's shipping, the equipment wanted to ship me our for for a equipment, and I told them. No, you can't.

We have to use something besides our 404. A my personal choice is our 448, a okay. So I said we need 448, a equipment, he says no, and he sends me a link. You know, with with information from the Department of Energy, saying that it's okay to use that particular equipment, and no it's not, but here's the confusing thing.

Okay, that rule applies to the other states in the United States that are adopting that rule. But in California we make our own rules right, because because we can ok, California is so weird and liberal, and whatever no no, not getting political but California. Silly about a lot of things, so California has their own governing board, called the California Air Resources Board. They officially made it illegal as of January 1st 2019 to use r4 for a refrigerant on new installations, so again to make a long story long.

The reason why I brought that up is the person that is selling the equipment is giving false information because they don't understand the rules either. I've said this many times before you need to do your own research and know the laws and don't just trust the guy. At the supply house counter because he told you so because that guy at the supply house counter is not going to defend you when you go to court and neither would his defense do anything for you, you need to do your own research. Do your own due diligence, figure out the rules? Okay.

Now with that being said, we are - and I don't know if Ralph is in here or not, but my buddy Ralph from Honeywell I've been talking with him back and forth and I do have a plan. Come the new year I am gon na get together with Honeywell refrigerants and we are gon na talk to someone from their legal department or something like that. That knows about the rules and the laws and we're gon na figure out a way to get that information to you guys to make it plain and simple. I don't understand all the silly legal lawyers speak and all that stuff.

I just want it plain and simple broken down. You can use this. You can't use this, yes or no. That is my plan.

If we can get together and we can hash it out, then we will do that. Come the new year on this channel. That way we can make because there's a lot of new states adopting this new law, where you're not gon na, be able to use for for a refrigerants. It's not all of them, but there's a lot of it's.

It's really confusing. So we'll try to make that easier for you guys, okay, so I'm gon na check out the chat and see what I missed in here. Okay, all right! Okay, I got you, you know what Terry I'm not gon na agree or disagree with you, but I understand your comment. They're saying it's all a scam to cheat money out of everyone.

You know that is someone's opinion. I've heard it. You know, there's merit to both sides. You know a lot of the people want to say that it's hurting the environment, hey, you know the the the documents say that it does hurt the environment, so I mean maybe it does.

I don't know, but then there's also people saying that it doesn't. It goes both ways, but regardless here's that here's the bottom line, we have no say in the matter, it is what it is. The rule is what it is, so we just got to follow it. So, like I said, sit down and buckle up because these changes are gon na keep coming, and you know what, as a contractor, it's really not that big of a deal because guess what it's a moneymaker it really is.

I mean when it breaks down to it. It's a moneymaker because if you're gon na convert that system, you're gon na have to do some changes, it's not just gon na be a simple change out. You're gon na do a few things. It may not be major, but I mean you got to do some things to make it work so hey, it is what it is right or just along for the ride.

So all right, let's see what I'm missing in here ice machine! Freeze: okay, let me see if I'm missing this okay, okay, Anthony Lovato, you said ice machine freeze. Time, won't stop adjusted eye thickness, but no help, maybe bad thermostat Anthony. It depends on what type of ice machine you're working on. But you give me some clarification.

I can definitely help you out, I mean I know a little bit about some of the ice machines, so you got to tell me what type of ice machine and I can talk to you a little bit more about the sequence of operations. So, let's see what else I got in here, oh yeah, it looks like the movie quotes already in there, this one's a little more obscure. So I'm curious if anybody I'll get this. This is a movie that I watched last week.

Let's see, I got emails, I don't know if I got emails, saying what the movie quote was: oh yeah Gary got it Gary. That's funny. Gary already got the movie quote, see see Gary got the movie quote the last time. So that's funny.

He had his Uncle Buck is the movie, so that's a good movie. I actually just watched that yesterday really good movie. I, like John Candy. Alright, let's see what else no worries all right, oh yeah, and let's make this absolutely 100 % clear for everybody that is watching this.

If someone doesn't believe what I'm saying you need to convince them, otherwise, r22 is not illegal. It is not illegal to put r22 refrigerant in equipment period. Okay, it's not okay. The only thing that changed is that r22 is illegal to import brand-new or import into the United States and it's illegal to manufacture in the United States.

Okay, we have stockpiles, and stockpiles of refrigerant r22 will be available for years to come. Right now, r22 is the cheapest. It has been in like seven years. It's kind of crazy, too right kind of makes.

You wonder about the hype of when the prices went up. Three years ago, and they skyrocketed to like $ 800 a drum - it's so cheap right now compared to that. So there is a lot of misinformation about r22 for the especially and the reason why I'm picking on the residential companies is because they're the ones that are put marketing ads out, not everyone in particular, but there is residential companies that are flooding the internet. With misinformation.

Saying that is illegal to charge our 22 system or there's misleading ads by national companies. I even hear them on my radio, not necessarily saying it's illegal but saying that r22 is, you know illegal to bring into the United States, go ahead and they'll send out a service technician to tell you how old your system is. So that way they can give you a quote to replace it, and it's like come on. I mean if their systems work and leave a beat.

Now it's okay. If, during a preventative maintenance, you know you notice that there's something going out and then you talk them into that, but you know this aggressive marketing. That's going on is kind of silly. So alright, let's see what else? What am I missing? Have I worked with r51.

Three: I've never even heard of our five one: three oscar scotsman self contained water pumps, sprays up onto cup like a copper, evaporator coil Anthony. If I remember right on Scotsman's, send me an email Anthony, I'm trying to remember the scotsman ice machines. It depends on which ice machine it is, if it's the cn3 model, he used to have the blue board in it. That one was a timed.

I think it was timed that it would. I can't remember, dude, send me an email while we're talking about ice machines. Another thing on my list really important for me to bring up is that training season is upon us guys all of the ice machine manufacturers are gon na start, their training classes actually or fallen might have already done theirs. They pretty much start them the beginning or the end of the year to the beginning of the year.

They start the training across the United States. So here in Southern California, our ice machine trainings are anywhere from December to February, usually sometimes into April. But all you have to do to sign up for the ice machine trainings. Usually there are a very small cost if they are cost at all.

Some of them are free, some of them cost like a hundred bucks or something like that and they're. Usually, a regional service training, it's a eight-hour class, usually maybe a half-day class and they usually feed you and then just talk about the new ice machines so to find out about any of the ice machine. Training classes just go to the manufacturers website. Okay, hoshizaki ice.

Calm, Manitowoc ice, calm, solid ice calm, I'm trying to think. If I'm ice-o-matic - I don't remember, but just google search just ask the Google for the ice machine brand and you'll find the training classes guys. Sometimes you may have to find out who their distributors aren't called the distributors direct out here in Southern California. Our distributor for manitoc ice machines is western Pacific distributors they're up north too? They do the training classes for Manitowoc.

Hoshii has their own distribution, so they do their own training classes. So just look into that guys, because the ice machine trainings will really help you out and usually, unless they change things. Usually they give you out those books that everybody's always asking me about that. I use in my videos for the most part.

I know that they're gon na eventually start phasing those out, but they give out those little tech, spec books at the training classes, for you to take home with you. So for those of you that always see those in my videos - and you ask me where to get them - that's where I get them from the training classes, and you know if I'm in the class and there's some extra seats I'll ask the person putting it on Hey can I take this extra book and they usually let me so that's how I get so many of those books so check out those training classes. Guys, let's see what I'm missing in here, how about 502? I used to deal a lot with 502. I mean that was a refrigerant we had to deal a lot with before 404 was a popular one.

502 was a refrigerant that they used. It was a low temperature refrigerant that was used with mineral oil. So the cool thing about 502 was when the replacement happened. All you really needed to do, for the most part has changed the compressor, because the compressor had the oil in it changed the compressor.

You could use the same txb when 4:04 first came out and you could call it a day. Use the same. Evap just make sure that you didn't have a bunch of oil in it. That's all, but yea 5:02 was a good refrigerant.

It had a very unique smell. I can still remember the smell of 502 refrigerant. I just uninstalled a 502 system. I changed it out to a new heat craft condensing unit.

It was a larkin walk-in freezer unit from 1987. I think 502 and we just changed it out. It was still running, it was just. I think it had a leak or something so alright, let's see what else we got going on in here.

So is it illegal to put 404 in a new condensing unit because condenser in new Terry, so in California, it is illegal to use r4o for a refrigerant on walk in refrigeration, medium, temp or low temp? If it's a retrofit or a new installation, it is illegal. Now it is still okay to do a leak repair with 404, a refrigerant in California and AD 404 to the system, but definitely want to do your research and don't just trust what I say: okay, do your research. All you have to do is look up carb and in fact I'll you know what it's easy enough I'll, just pull it up real quick, so see: ARB, California, Air Resources, Board. 404.

404. That's all I'm searching carb 404 and let's see if I can come up with a list right here and it basically, this is the California Air Resources Board website. So let me pull this up and it simply says it right here if I can go ahead and transition this over transition that over this is the California Air Resources Board website. All that I did was Google search, see ARB space 404, and this was the first thing that popped up and it simply tells you right here: talks about aerosols, foams, that's not my problem and you go down here and it says retail food refrigeration and it says Supermarket systems retrofit remote, condensing units retrofit and it breaks down the habited refrigerants 404 507 and a bunch of other ones, 422 CD, all these weird ones - and it just tells you right here, unacceptable as of these dates January 1st 2019, and then I believe, let's see, If it does down here, no it doesn't.

It doesn't give you the information right here, but there's somewhere that I read that it breaks down what the difference between a retrofit is versus a new installation, but either way for retrofit or new installation. You're not allowed to use our 404 a refrigerant in California, so let me go ahead and transition my camera back over BAM. There we go and we'll go back to that so yeah! You know it's there's a lot of misinformation out there about that. So just be careful, okay and remember: our 22 is not illegal.

You can still use it. It's just a matter of. Is it cost effective to use it? You know I'm not saying that it's not a bad idea to sell a customer, a new system that has our 22. I totally get that so long as the repair is justifiable, but I don't believe in people selling systems just because it has our 22.

You know I mean Who am I to judge, but that sounds a bit shady just because it has our 22. Now, if it's going out, it has leaks sure that's a justifiable repair because you can say you know it's gon na cost this much and then you know, but again, I'm not a business person. So I'm not judging anybody for what they're doing so all right. Let's see what else ask the Google that's right, my buddy, I can't claim credit for that.

One, a buddy at a party made that joke one time and I just use it all the time when someone asked me what to do. I said: ask the Google so all right. Let me see what am I miss and if I miss questions, throw them in there again, guys: okay, instead of our 22, what do you replace it with so personally right now, I am still using r22 refrigerant to this day, but there is a lot of great Replacement refrigerants and what I'm gon na do is I'm gon na direct you to my buddy Ralph again. I haven't seen him in here yet, but he will help you with all kinds of different all kinds of different alternatives for r22 refrigerant.

So here is his email right here. You guys can feel free to send him an email and he will P out with the different. You know replacements for r22, okay, there's all kinds of them. The biggest thing with the r22 replacements is just remember.

There's a few refrigerants that of the replacement ones that will work without an oil change. But if you read the fine print, they all say it's best to change the oil. So if you're gon na do an hour 20 to retrofit, my suggestion is gon na be to do it right and change the oil and/or change, the compressor. Okay, you can change oil and a compressor.

Now, if it's a hermetically-sealed compressor, you know that's braised in you're gon na have to unset it pour the oil out pour new oil, so it's kind of a pain in the butt. But that is something: okay, but again: there's there's alternatives and there's refrigerants that will work. You know some people say adding a little bit of p OE to the mineral oil and different things like that: okay, but bottom line. If you read the fine print of any of the refrigerants, the fine print is gon na tell you that it works best with polyester oil.

Okay. So, let's see what else we got, what is the proper steps to convert a system from in mineral oil to POS? Oh Lorenzo basically is kind of what I mentioned, but remove the refrigerant from the system remove the oil from the system. If it's a semi hermetic compressor your in luck, because those are super easy to get the oil out of if it's a bigger scroll, compressor. You're super in luck because a lot of times they have or oil ports on them that you can drain the oil out.

Okay. But if it's a pot compressor a reciprocating pot, compressor, that's braised in the only way to get the oil out of that really is unswept the compressor and pour the oil out or pump it out, but getting a little mechanism down then or just suckle. That only allows gon na be a pain in the butt and then obviously replace the oil that you took out the amount that you took out. You put that same amount back in well.

I guess I guess you got to be careful about that. You put the right oil charge in the system, but you have to pay attention okay and replace it with polyester oil going through all those steps. To be honest with you you're better off, and you want to make sure too, that the compressor manufacturer approved the lubricant you're gon na put in there, because if it's a really old, compressor, Copland or Tecumseh may not approve polyester oil in that system. So, in that case, you might be better off changing the compressor.

So alright, let's see what else should Tony Tony? I don't know how to pronounce. You know. I've said that last name before, but I cannot pronounce it. I'm sorry Tony you asked me: should you be using shielded control cables for VFD installs Tony? I am NOT a VFD expert.

Okay! There's a gentleman named John Oakes. That's in a Facebook group. I think he has a Facebook group called vrf, something or other and he's more of an expert when it comes to VR installations and service. So I would definitely lean on him, but shielded cable is often used when you're running control wiring in areas where you might have problems with EMF.

Electromagnetic feedback running shielded cable is always better than not running shielded cable, but as far as a requirement for vrf installations. I can't answer that one but okay, I do not know so. Let's see any refrigerant period is known to the state of California to cause yeah. It is any refrigerant anything known you.

I bet you anything. If I look at this paperclip box, there's no apparently to California, these paperclips don't cause cancer. So I think this is the only thing that doesn't cause cancer in California. So, let's see it got a curious HVAC guy here, hey Bill, I'm pretty sure that this sticker causes cancer and there's no warning label on it.

So you might be out of compliance bill. So all right! Do you forced air conditioners, do forced air condenser have a condensing unit pretty cure forever? I really don't understand your question. Bud and I'd be happy to answer it, but do me a favor and send me an email to HVAC our videos at gmail.com with some more context and I'll try to answer your question there. Okay, all right, let's see what else all right, I'm gon na get to my list of stuff here, real quick and I will get to some more questions in the chat.

Okay great question I had today just on a random video with someone had asked me on a Linux packaged unit that I had made a video on a while back. I work on Linux, commercial packaged units, okay, they're, actually one of my favorite packaged units right now for commercial anyways. It was a in urgence unit that had three compressors in it and I was replacing a thermostat and the technician had asked me how come I didn't use a three-stage thermostat if it had three compressors so oftentimes, it's gon na be more difficult to find a three-stage Thermostat, I'm not saying that they don't make them, but for the most part I only install two-stage thermostats, but the cool thing about the Linux packaged units and other packaged units too. I've seen it on carriers.

I've seen it on York is, if you have multiple compressors more than two, the logic inside the circuit board takes care of the third and fourth stages. Okay, so usually you only have to bring a two-stage thermostat to the picture and on the call for second stage, it usually controls the last couple compressors together and it uses the computer board in the unit to figure out its logic, and you know turn them on And off so in that particular situation, I only needed to bring a two-stage thermostat to that unit and then the could, the the the logic board basically controlled the rest. Okay, let's see our 422 B is a good change for r22 cool right on. I haven't used it yet, but you know there's a lot of different, a lot of different flavors that some people say.

Okay, so let's see what else okay. So this is a good one right here, so visual inspections, okay, understanding, how systems operate and the reason why I'm seeing this was. I had a question where someone commented on one of my videos and they said hey. You want to be careful because apparently I condemned a condenser fan motor because it wasn't spinning now I'm sure that the person misunderstood me because I know better than to condemn a condenser fan motor but there's nothing wrong.

I mean I'm not mad and I appreciate any comment or any feedback on my videos, guys whether it be positive or negative. I usually address them all and let's have a conversation about it. Okay, now here's the only thing. The only rule I have you can put whatever comment you want on my channel and I don't think I've ever deleted someone's comment, positive or negative unless it mentioned a restaurant name.

I don't allow any restaurant names in my comments so whether it's a correct guess or the wrong guess. I usually delete restaurant names in the comments. Those are the only comments I delete okay but anyways, so this person had asked me about condemning condenser fan motor because it wasn't running. I thought this was a perfect time to take this now.

I know better than to condemn a condenser fan motor just because it's not running I'm not saying that. I won't look at a fan motor and say that's bad okay, because if you understand the sequence of operation - and you have a fan where that's not running, you can usually use your senses and figure out if it's bad. Okay, obviously you want to check to make sure if it has a capacitor that the capacitor is working right in my situation, restaurants, often times will have fan cycle controls on second stage or sometimes primary condenser fan motors. So, yes, it is very dangerous to just look at a motor and say it's bad, because it's not running because it could have a fan, cycling, control which could turn on and off the fan motor depending on the ambient temperatures.

Okay. But the important thing is to understand sequences of operation. Okay, if you know a system does not have a fan cycle control on it, and you see a fan motor not running, then you look into it. Okay, if you know that a system has a fan cycle control and a fan motors not running, let's still look into it, but you you understand how systems operate.

It's so important to understand sequence of operation before you go into equipment or have a general knowledge of how they work so that way, you're not completely alarmed when you walk up to a system, and you see that a fan motor is not running well, it could Be bad or it could not be bad, is in the middle of the summer. It's a hundred and twenty degrees outside and the fan motor is not running. That's bad, okay, but you know if it's cold outside or cooler it might cycle off on. You know ambient temperature or system pressure who knows okay, so understand sequence or understanding.

Sequence of operation is extremely important when we're working. Let's see if I'm missing anything here, have I done any work on lead lag package unit configurations for telecom data buildings. I've never done work on a lead lag for a telecom building, but I do know Trane package units have a lead lag setup, so essentially a lead lag will for the most part. Let's just make it as easy as possible.

You have two compressors, okay, the reason why telecom is probably a little bit more important, okay or important data centers or things like that. Okay is, for the most part, they don't cycle off air conditioning equipment because they want to maintain certain temperatures at certain temperature differentials and they don't want to see temperature swings inside data rooms and stuff like that, okay, so oftentimes. What that means is they will usually put some sort of a hot gas bypass on the compressor. Okay, with AD super heating, expansion valve and they'll typically continue to run that unit all the time, and then that way they don't have compressors that shut off.

They also do this for energy requirements and the supermarket systems and stuff like that, okay, but they I'm losing my train of thought, as I'm talking right here at a whole point I wanted to make, and it's like totally getting lost here. Okay, now another thing no.2 is and that's why I was getting off on my going off on a tangent. So the most basic lead-lag system is going to be a system that has two compressors and they sequence, which compressor is the primary and which compressor is the secondary. Okay, they'll do that for energy reasons, and the reason why I was bringing up the hot gas defrost is is because, especially on some again, I don't want to get too crazy into the supermarket stuff, because I don't know a whole lot about that.

But on some industrial stuff or supermarket stuff, it may me may be more efficient to keep the compressor running at all times and they would, if you had two compressors, they would swap the compressors every couple days so that one was a primary one was a secondary And then they would swap them to get even run time on each compressor. Okay, so that's a situation where you might see a lead lag setup where they have some sort of a timer or some sort of a control board that might sequence which compressors gon na be the lead and which one's gon na be the lag to make up. The difference when needed: okay, I'm not again a genius when it comes to that stuff. Okay, I just have a general understanding of how it works, so I may have said something incorrect inside there, but you know hey Jeff.

Thank you very much for that super chat. I really really appreciate it: okay, all right um, let's see Jeff, I used to do work for some Applebee's restaurants and they had a ons out here too, and I've seen a on on a couple other restaurants too. None of the ones that I service, but the Applebee's used to have Ann's, but they were the most basic Aeons in the world. Electromechanical controls, no computer boards or anything.

So we were lucky in that aspect. Okay, let's see what else I got going on. What am I missing here um? Let me see: okay, cool, I'm not seeing anything in there. Yet, okay, let me go ahead and get to my list of other things.

I wanted to talk about. Okay. This is a great question. Okay, so what happens? If a customer doesn't listen to my ideas to prevent further problems and great example, today I had a service.

Actually I haven't made the video yet, but I've had some footage that I've been wanting to edit down and it's on an exhaust fan that wasn't working properly. Okay and ironically, I have even more footage on that same exhaust fan from a couple months ago, where I had a motor starter trip in the middle of the weekend, and I couldn't find a reason for the motor started, a trip. Everything has been working fine and it worked for like a couple months and then it tripped again, but it happened. Actually, no, it didn't trip again.

Then it it happened again and I happen to be there yeah. I did it tripped again, so I happen to be there doing something else and what had happened was I turned off the fan to check the belt and when I turned it on the motor starter tripped well, what I found was the switch. The three-phase switch had failed, okay, spoiler alert because that'll be in a video soon. So now flash forward to today when I found that switch bad, I talked to the customer and, I said: hey: we should change all the electrical conduit on this exhaust fan to the fan is in really bad shape, but we should at least change the conduit and Change the switch and the customer declined me changing the conduit okay, so I recommended to them that I change the conduit and they said no.

They just wanted to switch changed. So what do I do in that situation? Because I know that that conduit is broken and cracked it's gon na become an electrical short later. You just put everything in documentation guys. I document everything to the customer and I make sure that it's explicitly clear what my recommendations are and then, if they choose something else, so be it.

My ass is covered because I documented it and gave them all the necessary information and let them make those decisions. I really like, when customers make decisions like that, to be honest with you: okay, because for the most part, it mostly makes me look good, because when that exhaust fan fails in a couple months because of a shorted out wire in that conduit or something I'm not Going to say, I told you so, but I'm hoping that they're gon na remember they're gon na see that hey, we just had a service call on this. We declined repairs and it shorted out again and then I'm gon na write in the invoice conduit shorted out. You know noted electrical problems previously or something like that.

Okay, so when we get customers that don't listen to us, we make those recommendations. Okay. The reason why someone had brought this up was because, in a video I mentioned about having a refrigeration system in a particular restaurant, that I've done a lot of videos in where we have oil return problems. The evaporators downstairs and the expansion valves get flooded with oil and therefore later on down the line, if you don't add oil to the compressor, it doesn't make its way back up there and the person had asked me well.

Why don't? I recommend adding oil separators to the system and that's a great idea most of the time the customers don't want to get that complex. They don't want me to reinvent their equipment. Okay, even though, and again, I've actually had this discussion with that particular customer. I can put an oil separator on here and we could keep this oil from going downstairs and we won't ever have this problem, but the cost of installing the oil separator and all this different stuff is gon na cost.

You X, number of dollars and a lot of times the customer says, and no we're gon na go ahead and decline that, let's just deal with what we have and if we change your compressor, we change your compressor. Okay, that's just how it works with restaurants, so you're just along for the ride, and, oh my god Curtis. Thank you very much for that holy crap Curtis dude. That is an awesome super chat.

Thank you very much. Curtis holy moly Wow really cool. Thank you. So very much man happy new year: oh snap, you're, the man Curtis dude, anyways whoo, that was awesome, dude all right, Wow way to distract me Curtis.

Thank you, though. That was a good distraction. You are the man, but thank you very much all right thanks thanks. So much dude yeah, so you know when it comes to the restaurants, you just you, you give them everything and document everything.

Okay, that's why, though, it is so important, especially for new guys and maintenance, guys to understand how systems operate guys if you don't know how a system operates, how can you do a proper preventative maintenance on that particular piece of equipment? Yes, any monkey can go change. Filter and slap a belt on there, but even a monkey can mess up a belt and make it too tight. So you know, as a new guy in the trade you guys need to really dig into this equipment. You need to understand and research, the sequence of operation and know.

Okay, don't wait for someone to tell you how to do it. You guys need to figure it out. That's the best advice I can give to anybody in this industry is: don't wait for someone to tell you how to do it. It's super-easy figure it out yourself.

Okay, all right. Let's move on to the next one. Let's see if I have a list of questions, please Jesse yeah, if you have a quit yeah, if you have a list yeah, definitely let me see what I'm missing here. Okay, what? If you have a compressor with slightly low pressure, r22 butt temperature on compressor is over 165.

That seems too high. Okay, so here's the deal r22 refrigerant runs high discharge temperatures, okay, so on the compressors you tend to have essentially in a nutshell, hotter compressors. Okay, if a compressor again, I don't know all the details. If a system is under charged, your compressor typically is gon na overheat, and if your system is overcharged, your compressor can overheat all right.

So it's very important, especially with our 22. As you got to lower temperatures, we would have a lot of issues because of the high compression ratios with r22 systems. You know essentially in medium temp and low temp. We would have overheat issues, and sometimes that's why r22 is not a super popular gas with the whole trip with the low temp stuff it kind of did.

Okay is medium temp and it does great as air conditioning, but you tend to have some issues with with the low temp stuff for sure now, the next that kind of segues me into another thing that I have on my list here - and this was a great Question that came in today and let me find it right here - great one right here: okay, so the question was - and I'm gon na paraphrase what he asked me he said: can the system pressure be correct when the site glass is still flashing and that's an interesting Question right, um, the short answer is no okay. Well yeah, I mean, but I guess you can answer yes, but here's the thing. Let's not worry about pressures, guys, let's break it down to an air conditioning system, easiest one! Okay. What temperature do you want? Is it in the space right now? What temperature is it outside? You can predict what your refrigerant pressure should be.

I believe it was Jim Bergman that said on a podcast when he was doing it with Brian or in the very beginning, and I'm sure someone else came up with this too. Is you have no business putting your service gauges on a system? If you don't know what the pressure should be before you put them on, and I'm not talking just the psi numbers. Okay, let's focus on these saturation temperatures. If you understand an air conditioner, a refrigerator refrigeration system, you need to understand and start focusing on saturation temperatures versus pressures.

Okay, let's get out of the idea of what my pressure should be because if you just focus on what the temperature should be, oftentimes you'll find it easier to understand, especially in refrigeration. Okay, if you understand that on a walking cooler for the most part, your evaporator TD is 10 degrees. Okay, that means that your evaporator saturation temperature should be 10 degrees below the box. 10.

Okay, that's pretty easy to understand right if you remember that number doesn't matter what refrigerant, for the most part, as a rule of thumb, on a walk-in cooler, your evaporator TD is gon na, be about 10 degrees, sometimes a little bit higher, but 10 degrees is the Easiest way to understand it, so that means that if you have a 40 degree box, your evaporator temperature, the saturation temperature should be 30 degrees. Guess what it doesn't matter, what refrigerant or what pressure, because if I know the saturation temperature, whatever refrigerant, I can predict what the pressures would be right. Guess what on the roof, you can almost do the same thing when you're dealing with refrigeration for the most part. If it's a microchannel condenser your your condenser TD is going to be anywhere from 12 degrees to 20 degrees somewhere in there, okay, but if it's a a 2 and fin old-school condenser your condenser condensing tempo over ambient or your condenser TD.

Those are a lot easier. If you I'm losing my train of thought again as I'm talking, but you guys get the gist of what I'm saying. Okay, if you pay attention to the saturation temperatures, it's a lot easier than to understand the pressure. So to answer your question, but if the system pressures are okay well, the sight glass is, you know: can the sight glass still be flashing? Okay, let's not look at pressures.

Okay and let's look at the sight glass. Does the system have an expansion valve where's the sight glass installed? Remember a sight. Glass is just a window into the system at the point that it's installed. Okay, so is the sight glass flashing on the roof? Is the filter drier before after the sight, glass? Does the filter drier have a pressure drop across it? Okay, the idea, if there's a pressure drop across the filter dryer, maybe your sight glass is flashing because of that reason, or maybe your sight, glass is flashing because you're low on charge, okay, there's a bunch of different variables that go into that.

I kind of feel like I went off on a little bit of a tangent answering your question and if I didn't answer it clearly feel free to send me an email to HVAC our videos, a gmail.com, okay, all right, let's see what else what Matt Dillon would I recommend Adam and conservation device for a commercial application. Matt can you those are big words for me. Can you break that down for what you're trying to say I can kind of. I don't know if I understand exactly what it is you're asking me there, but so break it down for me or feel free to send me an email.

Okay, let me see hi side pressure is 250 low side. Pressure is 40 for automotive kenmore.