Ah, it's time to chill out and get ready for a mediocre q, a 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. Sorry about that, hopefully you guys are doing well. Um, actually mark miller, i'm gon na give it to you bud.

Um uh joshua hamilton is the person that got it first, but josh won last week, so we're gon na hold off on sending josh another beanie, but mark miller. You actually are close enough that i'm going to give it to you. So the movie that i was playing in the very beginning was actually heavy metal and mark miller. That's what you guessed so yeah i'll give that to you um yeah, it's a movie that i never should have been able to watch at like six years old, because it's totally inappropriate no no six year old should be watching heavy metal for sure um yeah.

I was, i was able to watch a lot of stuff that i shouldn't have been watching so uh mark miller. Make sure you s. Let me know whether you want a cuffed or non-cuffed beanie for those that don't understand. What's going on um in the chat in the very beginning, i said when i start the stream that i was gon na be playing a movie in the background and uh i was playing the heavy metal movie and the person to guess it won.

Um and joshua hamilton won last week, so i'm not going to give him the prize again, but mark miller you were the second person to email me so mark. Let me know if you want a cuffed or non-cuffed. So this is the cuff right here right. So this one keeps you warmer, the non-cuffed is just this: the beanie without the fold-over.

Basically, so let me know which beanie you want mark miller and then send me your address to the same email. You already sent it to and uh i'll get it sent out for you, okay, but yeah congrats mark i like doing that kind of stuff. I like doing different stuff. You know i'm a different kind of a guy when it comes to giveaways and things like that.

I don't like to announce things i don't like to drive. People to you know, do certain things to win and all that good stuff, but um but yeah. I know i like doing the fun different style giveaways. That's just my style of doing things.

Um yeah and uh, i'm not gon na give too many hints away, but uh yeah, there's a really big thing: coming really really big for those that have been watching the channel for a long time, um something really big, coming uh towards the end of the year. Here, probably actually before the end of the year here in the next uh couple weeks, a really really cool video is going to be announced, and that's all that i'm going to say, i'm not going to tell you guys anything else, because again i like to do Things differently i like to not follow the same routines that everybody does, that does live streams and different stuff, like that, i like to beat to the tune of my own drum so yeah right on. Well, hopefully, you guys are all doing well. Um got a nice little list of things to talk about here and then i definitely want to get to your guys's questions and topics.

So if you guys have things you want me to cover things, you want me to talk about. Please make sure you put them into the live stream chat and type it in caps lock that way, it helps me to see them and or the moderate moderators to see them and i'll try to get your questions. If i fail to answer your question or don't see it because a lot of the times there's a lot of stuff going on inside the chat feel free to send me an email to hvacr videos, gmail.com and i'll definitely try to get back with you, okay, so Um uh, let me see what we got going on in here: um yeah, exactly i'm sure i'll get demonetized or whatever, but i don't make any money on these live streams anyways. So it's all good, don't make a difference.

Don't make a difference. I'm sure youtube. Will copyright me or something so i don't know, i don't know what the fair use is, i'm just showing something in the background playing, so it wasn't like necessarily on my screen. It was just in the background, so yeah we'll see see what happens in there.

Um all right uh, i'm looking at the chat right now: um, okay! So i'm gon na get to my list of stuff to talk about. Okay, um! So had a couple videos this last week, uh two of them to be exact. The first one was a walk-in freezer with a defrost issue. That was a really cool one, because uh it was a little bit different.

It was an iced up freezer. You know that happens a lot where i get iced up freezers, but in the situation of that one um there was some broken electrical wires and there was a few people that didn't quite understand what happened. So we found a loose neutral or a loose common wire. It was a 208 single phase, evaporator coil and, at the same time, two there's a relay.

That was a qrc, the quick response, controller on the evaporator, and there was a relay on the qrc controller. The wire had broken off of the relay and it wasn't allowing the system to go into defrost properly, so um, it's just cool when we get to do something like that. I, like things that are different right, because i defrost a lot of walk-in freezers and to have it actually not just be a door being left open is actually kind of nice for a change, because i do get those calls so um. The second video that i released this week was danger, the r290 repair um all right.

First off guys. I hope you saw the sarcasm in the title right and if you read the description of the video you so you i explain. The sarcasm. Okay, i realize r290 is not that big of a deal okay, so many people are afraid of it, so many people are scared of it.

It's really not that big of a deal. Okay, r290, is a hydrocarbon refrigerant. It is pure unodorized propane bunch of different questions about that video. One of the main questions.

Why is it not odorized? Okay, because the odorant is a contaminant that could potentially lead to issues in the refrigeration system? Uh. Remember that the propane that you use for your barbecue is just being burnt off, and if it's not a hundred percent pure, it's not a big deal. Okay, the propane that they use for your barbecue actually has a lot of moisture in it. I know that from experience when i used to have a travel, trailer, i'd go, get my tanks full or filled, and then they wouldn't um.

I would have problems with the heater in my rv and what i actually found. That was when i learned the lesson that there's a lot of moisture in the propane that you get from the barbecue place or whatever, and so that's the difference. The propane that they're using in the refrigerators is, i believe, it's 98 pure. It is unodorized.

There's no moisture in it. It's highly refined, propane. Okay, unlike the stuff that you get from the barbecue store and all that crap okay um. I would not suggest refilling your refrigerator or your air conditioner with propane if it was not designed for it.

Keep that in mind when i say that it's not a big deal, it isn't a big deal if you're using it properly and it was engineered to be used in the system you're working on okay. When it comes to the hydrocarbon refrigerants, the refrigerators are set up with spark resistant or spark proof components. They don't have typical current sensing relays. They don't have typical condenser fan motors a lot of the times.

They have different starting components: different condenser fan motors and it's all spark resistant or spark free components on them. Okay, so you don't want to just dump r290 propane in just a run-of-the-mill air conditioner or refrigerator, because there could be a potential or some liability issues if there is a problem in the future, all right. So when it comes to the r290 repairs, i really don't think it's a huge huge deal um. We just have to remember that there's a few basic steps that we have to follow when working with r290 refrigerators.

Philip. Thank you so very much for that. Super chat that is much appreciated, wow bud. That is awesome.

Thank you guys. Thank you to everybody right for for watching the stream, interacting with the stream. If you guys haven't already, please give the stream some sort of interaction thumbs up thumbs down. Whatever you want to do, leave a comment.

It definitely helps out the stream okay, even if you guys are watching this after the fact please interact with it. Um youtube plays with things right now: youtube is playing with the numbers, and this is a really down month, which is fine. I mean i still make these videos, but i'm just noticing a huge drop off because youtube's not recommending this video to new people. Obviously, they're still showing it to my normal core or base of fans, but they're, just not showing it around, so any interaction.

You guys give this video and any of my other videos will help youtube to realize that i'm still here and people you know and that they should be recommending them to other people. So again, thank you very much, phillip. That is much appreciated. Okay, um! So when it comes to the r290 refrigerators guys, there's some basic common refrigeration practices, you want to follow and what's interesting is, if you ever take an r290 training or you read about them or watch a youtube video about them or anything like that.

It's really not that different than basic refrigeration practices that we were taught in trade school or when we were first coming up. I mean cut as many components out as you can, but i also explained that in the video that it's not always practical to cut components out of tiny refrigerators right because then you lose, you know certain space and lines. It just gets to be a pain in the butt purge, the system with nitrogen before turning on a torch, that's just good practice in general, but especially these days, we have hydrocarbon refrigerants and we have a2l refrigerants, which are mildly, flammable, refrigerants such as r32 and other Ones like that, where it's going to be a good practice to purge with nitrogen or sweep the system with nitrogen before we try to unsweat any components or different things like that. So, but it's really not a huge deal.

Just have common stuff ready with you like safety, stuff fire extinguisher towel water, hose whatever it may be, just to make sure if there is a situation, you're ready for it um, and then i always when i'm working on r290 systems. I always after i've opened up the first port or whatever i'm going to do i'll, take a torch and kind of wave it across the port just to make sure that there's nothing flammable still in the system and it kind of gives you an idea. What you're working with so you don't get surprised scott. Thank you.

So very much for that super chat. I really really appreciate it. Man. You are amazing, bud um and you're.

An awesome, awesome dude and i look forward to hopefully hanging out with you at the ahr trade show in vegas coming up soon. Actually, no, i look forward to meeting up with you, scott at the ihacky trade show, because i think we were going to try to meet up at that. If you guys don't already know, if you're in southern california and you're local to me in pasadena. In a couple weeks we are going to be having the ihacky trade show.

It's a really really small little trade show um at the pasadena convention center. I will be there, i'm going to be there first thing in the morning and then hanging out till probably midday um, probably bouncing around at a couple different booths - and i know scott was talking to me - he's hvac rookie. He was talking to me about meeting up there and then maybe we're going to meet up at the uh ahr trade show, which will be at the end of january. I believe in las vegas, that's another! That's a huge trade show um.

I went to the eighth. The last hr trade show we had, which was two years ago. There was over 10 000 people in attendance um. It was pretty crazy, so um uh definitely look forward to that and then also i've said it before i plan on being at the um hvacr training.

Symposium or i should say i plan i plan on being at the hvacr training symposium in florida in february, uh, brian orr's, hvac, school event, uh, but there's always a possibility i'll be doing an online presentation. I'm gon na attempt to do an in person, but it just depends on whether or not i can get off work in time and get out there and all that good stuff. So working out all the logistics but um james tucker says how did i manage with covid with my work? So i could still do my work um well james, when it comes to all the craziness of covid and all the you know. Whatever um you know, we definitely slowed down for sure.

It definitely got a little bit scary for a good couple weeks, but then it picked back up. It's still slow. The restaurants are still trying to recover because 99 of the work that i do is restaurant refrigeration and air conditioning so um they're still struggling. Restaurants are still having a hard time recuperating from all the the craziness of the previous last year and a half or whatever it was um, but i mean we just did our best.

You know we. We we tried to stay um as busy as possible and uh. Just tried to be as efficient as possible when it comes to times like this people are hurting, restaurants are hurting and stuff. We want to give them the best bang for their buck.

Basically, so the big picture diagnosis is really important. Now they don't always go for the big picture repair, but we always show them the extra effort to make sure that we're looking at everything trying to look out for their best interests and giving them the options and letting them make decisions. That's the cool thing about commercial. You know, i myself, if you guys don't already know, maybe one of the moderators that's in the stream right now can joe or someone can post a link to the hvac overtime channel.

That'd be great. So i do a show with my friends on friday evenings on the hvac overtime: youtube channel, that's with hvacr north who's, a moderator in the chat, curious hvac guy, who i saw in here a little while ago, um adam uh, muffet, and then myself, the four of Us we do a stream on friday evenings where it's a real hangout. We just kind of really let things rel. You know very relaxed and just talk about nonsense.

Sometimes we have great guests. This. Last week we had brett wetzel from the advanced refrigeration podcast. That was really cool.

It's cool to hang out with people get to know another side of them besides just the educational side, but anyways on the overtime show. We've been kind of talking a little bit about the sales and stuff like that that some of the residential companies have to get into, and i realize sales is a part of this industry - i'm not a fan of a shady sailing or shady selling right, i'm not A fan of people manipulating customers and things like that, but when it comes in general i mean sales is a part of our trade, but one of the cool things about the commercial side, especially the light commercial refrigeration side and even the heavy refrigeration side. Is you really don't have to do much as far as selling? If you just do your job and go in there and just give the customer all the information stuff is always broken, there's always a potential for repair, return, visit and different things like that. So, if you're going into these restaurants to do a preventative maintenance or you're just going to work on one particular piece of equipment, either way, you walk in with your eyes open and your ears open right and you listen, don't put headphones on, walk in and listen Around you hear funny noises on the roof, bring it up to management.

You see something funny about the equipment, bring it up to management. It doesn't necessarily mean that you have to repair it that day, but we don't have to worry so much about sales. On our side, because the stuff is all there, there is so much work out there to be had. All we have to do is find it right.

So we have to be on site and just say: hey, you got a lot of stuff going on here. Do you want to address any of this and it's super easy as opposed to going into you know on the residential side, and you know i get it sometimes you do have to make sales and upsell and different things like that. But on the commercial side, that's not really a thing you're! Just going in there saying hey! You know what i'm here working on this air conditioner. Here's what's going on! Economizer is not working right.

Um, there's oil on the compressor, suction line, there's a dirty evaporator, coil! Contactors, look really bad; you just bring that stuff to the customer's attention and let them make decisions on whether or not they want to do it so um. Let me see what else we got in here. I want to talk about something start: the stream off um. You know i wan na explain: i get a lot of emails from a lot of different people and i have no problem when i can, when i have time with answering people's emails and trying to help them out when they need help about certain things.

Okay, lots of people email me, send youtube comments. Private messages, different things like that number one understand something: i am a busy person, i actually don't explain, or you know put it out there, how busy i am. Okay, i run a business. I have a family.

I do the videos thing. I barely have time to do anything. I barely have time to scratch. My butt, i mean i'm just i'm overwhelmed with a lot of stuff going on, i'm not bitching.

I i dug my own thing here right, i'm the one that did this, i'm the one that made myself available to everybody and and that's fine, okay. But the reason why i'm bringing this up is, if you guys email me, if you guys send me a message or whatever and you need help with something um. If i don't answer you, you can send me another message: i'm fine with that. Okay, but if i don't answer you again, you don't got to be, you know, understand something.

Sometimes i just can't get to everything. Okay, i'm a busy person. Sometimes i'm you know uh like uh over the weekend. You know there was someone and he was just joking around, but i sent him a message and - and i didn't take offense to anything, but he had sent a message.

Hey how come you haven't answered my things and i just said you know what sometimes i don't explain how late i worked the night before i don't explain how early i got up that morning. I don't explain that i was doing uh video editing for four hours and then someone sends me a message and they want me to answer something right away and again i realize i'm not mad at the person again i i you know, we clarified everything and i Explained to him i just didn't have time to answer him. Okay, so it does happen um and i'm a busy person. So i feel free to keep sending me questions and emails and comments.

But if i don't get back to you, you can try to resend it again, but you know just remind me a couple weeks later or something if i didn't get to it. Okay, i can't just answer everybody's questions, but the reason why i brought this up. There is no shame in asking for help. Absolutely no shame.

Okay, i know that there's some people out there. I've talked to some people, some friends of mine, that don't ever call technical support they feel like they shouldn't have to. I call technical support all the time right, but when and if you call for help or you ask for help, don't ask unprepared have all the information available if you're going to call technical support? Have all the information in front of you that you think they could possibly ask that way: you're not fumbling around okay. Have everything ready.

If someone sends me an email and uh, you know, and i can tell from the email, because i can i can tell from emails and comments and different things that they have absolutely no idea what they're doing guys. I don't mean to be rude, but i can't i don't have time to walk someone through how to diagnose things and all that stuff. Now, if you email me with a with a question, hey i've checked this this and this - and this is what i get do you have any hints or any ideas on where i should look next, that's the kind of thing i want to see. I can't be your supervisor, i can't be the person, that's going to hold your hand and walk you through things, and the same thing goes for the technical service department on the other end of the phone.

When you call them, you need to have that information ready. You need to be prepared have more than they could ever want to know that way. If they do ask it, you have it the 98 deville. Thank you so very much for that super chat man.

I really appreciate it. You are awesome. Okay, um there's a couple of these things that came through i've said this many times before. If you guys don't already know, there's a bunch of different ways to support this channel.

The super chats are awesome, very cool. Thank you guys very much. You don't have to do that stuff. The easiest way to support the channel is simply watch the videos from beginning to end without skipping through anything.

That is the simplest way to do so. Okay, if you want to go further than that, there's obviously super chats. There's the patreon page, you can become a patron, which is just a monthly commitment charges, your credit card, whatever you choose, youtube, channel membership, same thing, a monthly commitment charges, your credit card, there's paypal donations, a bunch of different ways, but the easiest way guys is just Watch the videos from beginning to end without skipping through anything, simplest way to support the channel. Okay, so thank you, everybody and for those of you that choose to do super chats and go beyond the the normal easy way.

Thank you so very much. It's amazing! Okay! So um always have the information ready right so that way, you're not wasting someone else's time. Okay, you know when you call technical support, just have it ready right um. So, let's see what we got going on in the chat right now, um, let's see uh.

No. I don't need help scratching my butt laska. Thank you, though. Okay um, let's see what else we got in here.

What am i missing uh. Do i find that i find a lot of leaks in our 290 systems ryan. No, i would not say that i find any more leaks in r290 systems than i find in any other refrigeration system. The cool thing about restaurant refrigeration is, there are always refrigerant leaks.

It's always happening because of the product that they store inside the box. Majority of the leaks on evaporator coils are caused by corrosion that is caused by improperly storing food in that refrigerator, airborne contaminants, vinegars acids, citric acid things from anything citrus becomes airborne and attacks the evaporator coil. Okay. Think about it like this.

The easiest way to understand it, the statue of liberty is made out of copper, okay, but it's green because of the corrosion from the environment around the statue of liberty, the salt, water, the contaminants in the air are attacking the copper and turning it that green color. Slowly deteriorating the statue of liberty: okay same thing is happening on our refrigerators when they don't store products properly, when they don't cover them tightly, then the the the product that they're cooling is becomes a contaminant in some cases and starts to deteriorate. The evaporator coil um same thing with the drain pans. The condensate drain heaters are one of the more common leak points on a self-contained refrigerator.

In my recent r290 video same thing, the contaminants in the box attack the evaporator and then the evaporator condensates. The water goes down, the drain runs into the condensate drain pan and then just sits there and warms up and the contaminants attack the condensate drain, pan heater too again improperly stored fruits. Okay, a lot of that can be prevented, but you know i give the customer the information and let them try to figure everything out. Let me see what else we got going here.

How loud is the field piece leak? Detector beep compared to the inficon stratus john deere fan uh. They are both really quiet. In my opinion, all leak detectors need to get a lot louder as far as the beeps go, but the cool thing about the stratus and the field piece dr 82 leak detector is that they have visual displays on them. That will let you know the field piece has an even better one, because on the tip it lights up with the red light.

So you can stick it in there and see that the tip lighting up. Then you can look at the display, but the inficon, stratus or detect stratus does the same thing. It doesn't have the lighted tip, but it has the the the digital display on the leak detector. So both of those are great leak detectors for sure um.

What do i think of blue on eddie lopez? I have no opinion of blue on i've. Had some uh um frustrations with their marketing department about a year and a half ago, but other than that. No issues whatsoever. I've never used blue on okay um, but they they have a pretty cool app that basically just goes out and finds all the manuals for all kinds of different equipment and consolidates it into one app mind.

You, though, just so that you guys know you can find most of those manuals on the internet by going to the manufacturers. If you guys want to know what i do on a regular basis is go into the app store on your phone uh. I have the google play store and type in a bunch of search terms of things that you think there should be an app for so carrier air conditioners type in carrier. Air conditioning there's like five different carrier: apps one for commercial one for residential one for technical support, one for chillers.

Most people, don't even know that carrier has apps out there same thing with trane linux. They all have an app that you can download tecumseh compressors copeland mobile app. So all you need to do is just type different things in the search bar of your app stores, whether it be apple or android and you'll, be surprised. The different things you can find type in spoilin type in honeywell type in all these different things and you'll find all kinds of different apps field piece measure quick, there's a bunch of different apps out there and they're changing all the time.

So you guys just need to download those apps and they will help you tremendously. Okay, people will often ask how do i find this information, or how do i find that part number just try if there's an app for it, a lot of the times. The part number is in there cool thing about the copeland mobile app. Is that there's tons of part numbers in there? You look up a compressor and it tells you all the roto, lock valves, crank case heaters, starting components, resistance values, it's all in their app.

So there's so much information out there. I will say that i don't feel like the manufacturers of and the the the creators of those apps do. A good job of letting people know that they're out there and i feel like social influencers like myself and a couple other ones spread the word more than the manufacturers do about their own apps. Ironically, i don't get anything in return for spreading that information, but i like to share the little bit of knowledge that i have with you guys, so i do it okay, so um today i wanted to talk about an interesting uh call.

I had today so a couple weeks ago i got called out on a fullet um ice machine. It is a horizon 700 series machine. If any of you guys have worked on full it's sitting on top of a soda dispenser at a local gas station and uh. They called me out there a couple weeks ago.

They said the ice machine wasn't working when i went out there. It was. I don't have a video on this by the way, but it was going off on high amps on the gear motor. But what was interesting is the shaft seal on the ice machine was leaking.

There was water actively dripping from the shaft seal on the ice machine. Now, if you guys have never worked on a folded ice machine, you probably don't know what i'm talking about. But if you have, you know it's a pain, okay, especially on the 700 series, because i believe this was the first machine where they laid the evaporator sideways, and this is like the first iteration of the 700 series. I'll tell you how much of a nightmare it is when you go to fullest website and you look up the 700 series machine.

None of the part numbers match up to this machine, because this was the one that was the guinea pig and they changed everything. Since this machine, so it's just a headache for me to work on but anyways. I ended up having to order a new shaft seal and a water dump valve and uh. Of course, the water dump valve came wrong because they cannot find the part numbers.

That's a whole nother thing, but i went back today and we had to do a full teardown on the machine. Full up machines are a pain right, so we pulled the whole thing apart. We we had to do it elsewhere from where it could plug in. So we had to do it all pull it apart, put it back together and the dang thing is still going off on high gear motor failure, and it's like man, and what i fear is because the shaft seal had been leaking for so long because there was Calcium everywhere in the drain, pan of the machine - and there was calcium all over the gear motor too and all over the bearing.

So i feared that that water had seeped into the bearing and caused some damage inside the bearings. I don't know if that's the case, but we're gon na have to order a gear motor for it, which is frustrating because we literally spent like seven hours today getting the machine. It's a pain in the butt to get it down and then cleaning it putting it back up, taking it back down, cleaning it again, putting back up, we had to sand the evaporator barrel. It was a pain man.

Sometimes some of those machines can really give you a run for your money, but you know it was important because i was really frustrated and it wasn't making sense what was going on. I called technical support. They told me just to double check a few things, but other than that we just got to basically step back. I had to tell the owner of the business like hey.

This is what's going on because improper preventative maintenance. You know we weren't doing enough preventative maintenance in the last couple months at that location, um, and this is what kind of came about because of it. You know we have these failures and then it just gets kind of frustrating because i had to spend you know seven hours today, cleaning the machine to put it back up there to say: oh, it still doesn't work. Now we need to order this part.

You know, and even then i'm like i'm assuming it's the gear motor, but it's kind of hard to say because it could be some other things too. Everything seems okay on the machine. But oh what a frustrating headache on that one. Let me look at the chat and see what we got going on in here: um alaska.

Was it a big shaft or a small shaft uh? I don't know which it was small um. Let me see what here we're going here uh. Let me see what we going discussion on ladder. Safety for roots roof tops tyler, you know.

Basically, you want to follow proper osha required uh things best practices from osha. Basically, so when you're, using extension, ladders and different things like that, you want to use some common sense too. You don't want to set them up on an uneven surface. You want to make sure they're extending past the roof parapet or the roof edge by.

However many feet, osha requires what is it three or four feet, for i don't know, there's like angles and departure whatever just just be safe and make sure you follow basic osha practices. Um. You know there's one thing that i don't do very much on my channel and that is is safety stuff. I i try to practice safe work habits and things, and i try to share as much of those as possible, but i am not a certified osha training, establishment or anything like that.

So i don't really go deep into the woods on that kind of stuff um. I understand basic and, and to be honest with you most of the osha requirements and different things like that are um are pretty basic. You know, i mean as long as you use common sense. Um.

Let me see what going in here. Oh, okay, i'll answer! Your question um, i saw uh richard rozelle. I see that you emailed me and i will answer your question after the stream. Okay um.

He was asking me some questions about supporting the channel and stuff. So i will answer your questions after um. One thing i need to do right now is: it is fall and it is raining outside and my family is nuts, so i am going to override the thermostat right now and bring the temperature of the house down to 72 degrees because i'm dying in my office Right now i recently upgraded my computer, so i have a giant computer on the back side. I don't know that you guys can see it.

Let me see here, i don't think you can see it if i transition over and now you guys can't see it. If i transition over, but i have a giant computer over here and boy, does it put out some heat when that thing is really cooking, but we got a million fans on it. It's got liquid cooling and it heats up my office super fast. So i am dying in here on top of that, i'm wearing a long sleeve shirt um all right.

So how do i go about charging as far as how much to charge the customer? This was a question that i got on my recent video for 2.8 ounces of r290, so someone had emailed me and they were asking me how i or how they should go about charging for the refrigerant that they use. Now, in the question that you sent me to the person that answered asked it you had said you know, i charge this much if i have to put this refrigerant in or this much if i have to put that refrigerant in okay. So what you need to do to figure out how much to charge for the refrigerant you're using is you need to know what your expectations are and how much of a profit you want to make? You need to figure out your overhead costs. That's really complicated.

To figure out and really complicated for me to explain to you, i have a multiplier that i use for refrigerant, i'm not going to say it on here, but that multiplier accounts for um. You know different things that might happen when you're charging for refrigerants okay, but you just basically need to figure out what you need to charge now. I also use some basic common sense um when you're working with r290 right there's very minimal charge in some of those cans. Okay, so oftentimes when i use a can of r290.

The cans that i use right now are 14 ounce cans. I charge for the entire. Can now here's my logic behind that r290 comes in a 14 ounce can majority of the time uh the maximum charge for r290. At this point in time, right now is 150 grams, which is like 5.67 ounces, or something like that.

If you have a 14 ounce can, if you put in let's just say six ounces, okay, you're, probably not going to be able to use that, can again to get a full charge for the next six ounce refrigerator, because you're never going to completely get all the Refrigerant out of that, can when it's such a small volume and amount of refrigerant in there keep in mind whenever you guys use 410a or r22 or 404a at the end of the day, when you're all done using a cylinder right and no more refrigerant will go Into there there's always a little bit of vapor left in there. Yes, you can get a recovery machine out, but that's not very practical, okay, but with r290 you're, not using a recovery machine for that. So you have to account for that kind of stuff. When you go to charge for it and that's how i do it so i've even talked to the manufacturers like because most of the r290 work up until last year was pretty much warranty work.

But now it's starting to fall on the customer, because majority of the equipment's out of warranty, so what we do is oftentimes. If we charge an r290 system, we charge them for the entire can of refrigerant. Now, on the refrigerator that i did 2.8 ounces yeah that one i can probably get one more use out of that can, but i do have a dollar amount assigned to a per pound charge for r290. Okay and when i do sell refrigerant, i sell by the pound, okay and i round on it.

So if i put in you know a pound four ounces, i only charge the customer for a pound, but if i put in a pound six ounces or or whatever, then i charge them for two pounds: okay, um and it all works out in the long run. On that one but um, you know everybody has different business practices and different ways that they go about it. But you have to remember that you don't want to lose out on things right so when you're, using those small little cans of refrigerant, keep that in mind, because there's always going to be leftover, refrigerant or r290 in those cans and that's a loss and uh. It's been a while, since i've looked at the price of r290, but for a while it was rather expensive.

If you looked at it on a per pound basis, it was stupid, expensive. So keep that in mind when you guys are charging and make sure you're charging. Accordingly, that way, you guys can make a profit on that kind of stuff. Bill is asking if anybody uses that special little r290 scale that holds the can upside down.

You know one of my texts bill has that that scale i have yet to see him use it. One of these days, i should probably borrow it from him um. I just use a little piece of cardboard to hold my cylinder up, invert it and go to town, but i guess i'll have to look into one of those little scales. Let's see what else we got going on in here.

What am i missing about um? How do i clean oil or lubricant residues from hoses jose? I would just use like a degreaser or something like that. If you're going to do that, refrigeration technologies has an all-purpose, it's their purple. Venom pack does a great job of decreasing things or getting stuff off of your hoses different stuff, like that um they're also their hand wipes uh, the viper wipes those things do really good at cleaning grease and grime and stuff off stuff. Let's see what else we got going on in here, um looking to see what i missed up in here doesn't look like.

I missed much um all right cool, i'm gon na go ahead and get to the rest of the things on my list. So i'm gon na cross this one off um, let's go ahead and cross that off anthony had asked me to this is a good question. Anthony asked me to discuss the approximate pressures and temperatures that i would expect to see on a reaching cooler and a walk-in. I'm assuming that anthony and i'm going to go ahead and kind of elaborate on his question too.

I'm assuming that anthony kind of wants to get an idea how to know before he goes up to work on a refrigerator. What the refrigerant pressure should be. I've said that many times, i'm not the person that coined that phrase i believe the first person i heard say it was jim bergman. I don't know if he coined it either, but we have no business putting our gauges on something.

If we don't already know what the refrigerant pressure should be before we put our gauges on there, okay and there's a lot of good information in that statement. Right because we need to have a general understanding of what we're looking for. Otherwise, we're just putting our gauges on there just to say huh, okay, those look interesting, you know. So how do i know walking up to a refrigerator what the pressure should be well, if you're working on a walk-in, cooler or walk-in freezer, if it's just a basic walk-in cooler and walk-in freezer, typically they're, going to run with a 10 degree, evaporator td, the td, Is the temperature differential right and we're referring to the space temperature versus the saturated temperature of the refrigerant, so typically on a walk-in cooler that is down to temperature? That is not a crazy engineered system.

The saturation temperature of the refrigerant is going to be about 10 degrees below the box temperature, all right when it's pretty much down to temperature. You want to keep that in mind just like with superheat. You want to check or or verify the td when it's almost down to temperature. Okay same thing goes for walk-in freezer.

So if we know that if we know that we want to maintain 38 degrees in the walk-in box and it's 38 degrees, and then we know that our suction saturation temperature should be approximately 10 degrees below the box temperature. Right, of course, paying attention to the sight. Glass, the head pressure, sub cooling, all that good stuff. Okay, now, when it comes to region refrigerators, those can be a little more tricky.

Each manufacturer of reach and refrigerator beats to the tune of their own drum. They do different things to make their refrigerator stand. Apart from the next guy okay, so it can be difficult understanding what your pressure should be on that refrigerator. What i would suggest you do, there's a little life hack.

If you want to find out what the evaporator td is on a refrigerator, either look up a service manual for the refrigerator you're working on. I work on a lot of dell field. Refrigerators go to dell fields, website, download the service manual and it'll. Tell you operating pressures this and this okay now understand something most manufacturers of refrigerators out there they're not going to share what the super heat and the sub cooling and the td should be, and all this different stuff, but what they will tell you is what the Pressure should be so if they tell you what the high side and the low side pressures are at a certain ambient temperature outside or you know, in the space and a certain box temperature, you could backwards calculate what kind of a td that system is going to Have for the condenser and the evaporator so if they say that a 404 refrigerator should have 53 suction and 240 head pressure well, take 53 psi with 404a, find the saturated temperature of that refrigerant at 53 psi now you know the saturation temperature and find out what They want the temperature of the box to be when you're checking those pressures typically down to temperature, so if it's a refrigerator 38 degrees right.

So if you take the saturated temperature of 404, am looking at a pressure temperature chart right now at 55 psi. That would be 20 degree evaporator all right and you have a 38 degree box, so 38 minus 20 degrees is 18 degrees, so that's an 18 degree td on that evaporator coil. So from that point forward, you know if you ever work on one of those little four or four boxes, they're typically running whatever the evaporator td was, and the same thing goes for the condenser td. Now i don't always know what they're going to be right, but i have a general idea of what the pressures and saturation temperatures should be.

So therefore, i do have some rules of thumb all right. If it's a micro channel condenser on something they're, typically going to be a 20 degree, condensing temp over ambient or or condenser td right um, so you know and if it's a tube and fin condenser, it's typically going to be a 30 degree, condensing temp over ambient Or 30 degree td, on the condenser and and so forth, okay, so you can always lean on the manufacturers find out what the tds should be and that'll kind of get you in the ballpark and help you to diagnose a little bit further. It just takes some research and some backwards ingenuity to try to figure out what the manufacturers are doing. Okay, let me see if i'm missing anything in the chat right now, um all right, there's that there's that i'm looking here um is chris sober tonight.

Yes, i am sober tonight absolutely, but i do have a drink right here. Um, i'm looking through the chat. All right, i see. Okay, so it says uh hvac, with greg you're still on residential install.

Eventually you want to move to service right on greg. That should be awesome bud. You should do great all right. Okay, can you top off r290 jyphc you're, not supposed to okay and let's, let's look at it this way, if there's an r290 leak, there's active, flammable refrigerant leaking into a enclosed space that has a door.

Has an evaporator fan motor running and different things like that? Okay, so you're not supposed to top off flammable refrigerants. Okay best practices say: um turn the system off uh if you're not gon na. Let the refrigerant out take the system out of commission. Whenever i work on an r290 unit, i don't top off the charge.

If i find one that has a leak, i disable the unit, so it cannot be plugged in i'll pull the cord off tape. It up cut the cord, do something: okay make it so that the customer cannot plug it back in order the parts that i need to order, then i'll come back out. I do know that there's some people out there that top off r290 systems and it gets them by just fine uh, not my style, not something i feel comfortable doing. Okay, um all right.

I crossed that question off the list. Um. Let's talk about setting pressure controls um, oh, i still got more alaska. We got another drink too so um.

Let's talk about setting pressure controls, there's a lot of confusion and misinformation on setting pressure, controls, low pressure control, specifically on pump down systems. Okay, first thing: if you have a pump down system, let's define that you have a refrigeration system that has a solenoid valve somewhere and when the temperature controller satisfies it turns off the solenoid valve. Therefore, stopping the flow of refrigerant out of the solenoid valve, so the evaporator continues to run. The compressor continues to run and the suction pressure drops lower and lower and lower until it gets to a predetermined set point, and it shuts the compressor off, because the pressure control can protects the compressor on a low loss safety or on a pump down safety.

So it's shutting down now, setting and figuring out where to set that pressure. Control bin can be kind of tricky because in the past we had reciprocating compressors right compressors with pistons, and nowadays majority of our compressors are scroll compressors, especially on walk-ins and air conditioners, and especially on walk-ins scroll compressors require a little bit different logic when setting up A pressure control setting for a pump down situation, okay, because scroll compressors do not like to run in a vacuum and or get close to a vacuum. They actually have a floating seal in the compressor hold on. This is the head off of a tiny scroll compressor and you have a floating seal right here, and this moves up and down within here now this one's damaged, uh.

This will be for another day. Another video. This is something that trevor matthews and i are going to talk about from um uh. What is trevor's social media stuff? I can't think of it right now.

Um refrigeration mentor is his pro. His project he's working on right now, but this is your floating seal and this moves up and down, depending on the compressor being on or off okay, and when the compressor turns on boom. It moves up and then moves down and different things like that. So if a scroll compressor runs too low, the floating seal and mechanisms inside of it can actually bring this uh divert gas from the high side of the compressor into the suction side, and the compressor will short cycle to turn on turn off.

So if you try to set the the cutout setting on a low pressure control too low on a scroll compressor and if you're watching your gauges, what you'll notice it pulls down to like four psi and then, when the compressor shuts off all the sudden, the suction Pressure shoots up, it's like a bleed off valve and it goes and it turns back on and then it pumps down again and then it turns back on and then it pumps down again and it turns back - and it literally is a never-ending cycle on off on Off on off, eventually, until there's catastrophic compressor failure because of lack of cooling coming back to the compressor and that's because pressure controls are improperly set now, copeland has a service bulletin out there that they want you to put a time delay relay uh delay on brake Timer, i believe to where it won't let it turn back on in short cycle, for a predetermined amount of time like three minutes or something like that, but to get to the root cause is setting the pressure control appropriately. So you always want to lean on the manufacturer of the compressor to find out how they recommend and what settings they want. You to set the pressure control at, but some considerations when it comes to setting pump down controls or low pressure controls on compressors is the conditions of which the condensing unit is sitting in. What are the ambient conditions of the condensing unit and what is the space temperature of the box? Okay, because you have to remember something when a when a pressure control shuts the system off um and the condensing units outside that condensing unit's ambient temperatures affects the way that the refrigerant moves through the system when the solenoid valve opens back up.

So you have to take into consideration your outdoor ambient conditions if it gets negative 10 outside you have to take that into consideration. When you're setting your pressure control, you may have to add things to the system to help because negative 10 degrees. What's going to happen, that solenoid valve is going to open and that refrigerant is really going to have a hard time moving around, because it's trying to move to a higher temperature and it's trying to move into a higher pressure. And it doesn't want to.

Because it's colder outside, so it's going to struggle. So there's things you can do you know in really really cold ambience, receiver, heaters and different stuff like that. But the most important thing you want to understand is it's not as simple as just setting it to cut out at five psi and turn on at 25, psi or whatever, because you're going to require the ambient temperature to help to drive the refrigerant through the system. Okay, so you got to keep that in mind when you're setting pressure controls.

It also comes into play with head pressure, control valves and different stuff, like that, so always lean on the manufacturer and know that the ambient conditions outside will affect the way that you set. Your pressure controls, so hopefully that kind of gives you guys some clarification. I don't know if i really made people more confused or what um, how funny you were watching with trevor with brian before my stream. Yeah trevor just did something with brian trevor's, a cool dude him, and i have been talking about working together and doing a collaboration.

It's just been me trevor's, like totally ready to do it, i'm just the one. That's been busy and haven't been able to do that so um. What is the noise it makes come on peter griffin, you know what that is all right. Um.

Let me see what else uh all right um. What does my company deal on changeouts or new installs hvac with greg? I am a retrofit guy. I don't do new construction, i do restaurant refrigeration and air conditioning, so i will replace equipment on existing stuff, but i don't build walk-ins. I don't install air conditioners from the ground up.

I will replace package units all day, long repair ductwork stuff like that. But i don't do new installation construction at all. I had a question about my thermal imaging camera. What thermal imaging camera i have been using um i've tried several different thermal imaging cameras.

I tried the seek shot pro. I tried the fleur c3. I tried the fleur one pro. I thought there was one more but regardless i settled on the fleur one pro it's because of ease of use and it uses your phone's processing power.

So you get a more accurate and more uh more power from the camera and those are basic thermal imaging cameras. Guys you can. You know those are all at the price point under six hundred dollars a piece. If you want to spend thousands and thousands of dollars, you can buy highly accurate hundreds of thousands of dollars for thermal imaging cameras, but i don't need that kind of stuff.

So the fleur one pro is a little dongle that plugs into my phone, but i will say, with the fleur one pro in an otter case: it with every phone is a little different for the most part. I have to pull the jacket off my phone to plug my floor, one pro, even if i extend it all the way out with this new phone, i have to pull that rubber off for the otter case to get it to work. I don't like any of those stupid, dongle, extenders or anything like that, they're all junk. I don't like them.

So i just like the extender that comes on the floor. One pro - and i just pull my case down a little bit shove it in and it works perfect um. Let's see, let me look at the chat, see what i'm missing have i had issues with delay on brake relay on beacon, 2 systems, josh howell. That is a great question and yes, i'm going to explain this right now.

I was just having this discussion with a supply house manager: okay, first off josh. Don't let me forget to talk about this, i'm going to explain a frustration that i have supply houses in general. Um are not given the tools, they're expected to do a lot and they don't completely understand the equipment that they're selling.