All right, let's go ahead and try to restart this. If we can, let's see if the internet is any better, i don't know if it's gon na be better but anyways. So, as usual um i got a few things. I want to talk about and uh we're not gon na.

Do the intro again but yeah. Let's see how this works, let's see how this goes. Okay, um! It's a good thing that i had a couple drinks before, so i'm not all stressed out and freaked out about it. So yeah, you know, let's see how this goes, all right, um the uh before it cut out last time i'll say it again right now, um we don't talk politics on this channel.

We don't really. I don't get involved in all that kind of stuff, but i do want to say that um, i hope you guys get out and exercise you guys right to vote okay, either way. It doesn't matter to me which side you guys lean on. I'm not that kind of a person that has opinions on that.

I just want you guys to get out there and vote okay. So when the election comes up, you guys do your research and make an educated vote either way. Whichever way you believe, okay, all right. So i had a couple videos alex.

Thank you so very much yeah um. I have really good internet. That's! What's weird, i don't know what the buffering was about. I have a 37 up right now, yeah, i don't have fiber.

Of course, i don't have fiber up but anyways, it's all good, so um this last week i had a couple. Videos come out, um that i want to talk about, but before i get into that, i wanted to say thank you again. I've been trying to address this a little bit more as we go um. Thank you so very much to the supporters.

Okay, i don't do enough to thank you guys, the patreon patrons the youtube channel members, the all you guys that are watching these videos in general. You guys are helping to support the channel okay, even just simply watching the video. It really helps. Okay.

So, thank you guys so very much leaving feedback giving thumbs up thumbs down whatever you feel. Okay, it definitely helps the channel. So thank you. Thank you.

Thank you guys. Okay, all right! Um, if you excuse me as usual, if you guys have questions, excuse me something in my throat. If you guys have questions or things that you want me to address, please put them in caps lock. It helps me to uh, see it okay and if i don't answer your question, keep throwing it in caps lock until myself or a moderator tells you to stop okay, all right.

Let's go ahead and get on with this um. Let me see uh yeah. No, i'm not moving to missouri ike all right. So the last couple videos that i had uh hurry.

The exhaust fan is not working. That was an interesting one, so that was 10 15 okay and i got to give cap or green heck exhaust fan some props. Okay, because i shared criticism with green heck exhaust fans on that video. The reason why i shared criticism was because i know people from their company watch my videos.

Now i love their exhaust fans. If i have a choice, i usually sell a greenheck exhaust fan. Those are the ones that i usually sell, but i was really frustrated with that service call because of the way that they put together that um the the taper bushing style hub on that wheel. Okay, it really kind of bummed me out and bothered me uh, cooling and refrigeration guy uh.

Thank you so very much. I really really appreciate that super chat bud. Thank you. That is awesome man, um, so uh yeah.

I was really frustrated with that exhaust fan and i shared some frustrations, okay and if you guys go back to that video okay, again, it was called hurry. The exhaust fan is not working. Look at the top comment. I pinned it all the way at the top, because it was the product manager, for that particular line of exhaust fans actually replied to my frustration in the video and he had a very, very um, honest apology, but then also reason as to why he used that Wheel and hub assembly that he did in that fan.

Okay. Now we still don't completely agree on the reasoning like you know, it's still frustrating for me as a technician because, like you said in the video all you do are in the comment. All you do is push the hub all the way down to the bottom of the shaft and that's where the wheel sits, and that was great knowing that information from the manufacturer, but on a friday night or whatever night. Whatever day it was at night time when i'm trying to put that exhaust fan back together, i didn't know that so in order to put that thing on there, it was just like a mess.

You know it was frustrating so, but i got to give them props for owning up to the mistake of not tightening down the set screw. That was their only mistake was not tightening down the set screw. Okay, but as far as giving me an explanation as to why he went with that hub assembly that he did um, that was uh really cool of them to own up to that. Okay, so i got to give them props on that one.

They were really really cool, so on that one too, i also showed that crazy messed up roof on top of that bank next door, guys that's insane. Okay, i got a bunch of comments about that. I shared some stuff within my social or within the hvac overtime. On their channel too and showed like the the headaches, if you guys remember in that video, i showed at the end of it, there was a brand new bank that was being built and they installed three new package units.

I think, and it was just a mess on the roof, and i think i commented in the video like honestly. It was so bad that it looked like the general contractor. Did the work himself. I know they had an air conditioning company doing the duct work, but i have a feeling that they had electricians, plumbers and the general contractor installed the units on the roof themselves and it wasn't the hvac contractor, because if it was the hvac contractor, that's insane like To install the exhaust vent four inches away from that wall, that's a fire hazard like that's, not good! You know over time that wall is gon na turn black and then how does that unit ever even get serviced like that's insane? Okay, all right um! Why don't? I use alignment tools for belts and pulleys um, because, to be honest with you, i was never taught to use alignment tools, but that's no excuse for not using them uh in my research and investigation, uh brad.

Thank you so very much for becoming a channel supporter and upgrading your your support status. Thank you, so very much brad. That is awesome bud. So in my research, basically just you know the small little air conditioners and exhaust fans that i'm working on.

I have yet to find an alignment tool or anything like that that is uh feasible for me to purchase right, that's, economically, feasible and or that would actually fit in the small compartments that i work in. I work on small little exhaust fans and for the most part i mean and correct me if i'm wrong, if someone out there has a better way for me to do it, i'm always looking for feedback, i'm always looking to improve okay. So please certainly send me an email at hvacr videos gmail.com, if you have something to share, but my research, the pulley alignment tools and all that different stuff. Nothing will fit in these tiny little fans that i'm working on.

So i've been able to use an eyeball. Really well, i've been able to use some straight edges to kind of get you in the ballpark and i'm going to be honest with you for the most part, i can get pretty darn close with an eyeball if you know how to look at the the way That the belts ride in the pulley and different things like that now i realize that when you get into like heavy industrial and process machinery and different stuff like that, of course, you've got to get a lot more precise with your alignment. But when it comes to most of these little ac units and stuff, it does pretty good for me. So again, if you have something to share with me a better way to do it, send me an email, i'm always willing to read all right.

Let's see what else, how do i remove wrong refrigerant contaminated inside of a system? So if you have a system that potentially has the wrong refrigerant inside of it, what i would suggest that you do is just go ahead and recover the refrigerant into an empty vacuum. Down cylinder, go ahead and mark that cylinder and take it to the supply house and just tell them it's mixed refrigerant that you don't know what it is. They'll usually take it back. My local supply house doesn't even really charge you anything extra.

I've had supply houses in the past that have charged me extra, but excuse me yawning what are my thoughts on waygo connectors, so waco connectors are new to me um. I just started seeing them popping up on a lot of the r290 equipment. True refrigeration, no uh. Dell field refrigeration is using them now um.

I think true uses them too. To be honest with you, but um yeah they're new. To me, i have nothing bad to say about them. I haven't seen anything bad now.

I have heard horror stories from other people. You know about them not making tight connections and things shorting out or the way go connectors, burning or melting, but i have yet to see that so i got nothing bad to say about them. To be honest with you, when i go to my local supply house, they've got electrical fittings on the wall or i go to my local hardware, store home depot or lowe's, or something and pick up electrical fittings. I usually just grab whatever they have, because it's always worked for me, but it's interesting that you asked that question because i have been kind of looking into a little bit more into the waygo connectors and i'm intrigued by them.

I just don't want to create more problems with them too. So all right, let's see what else we got in here. Why would a jade controller error out with a co2 fault when the co2, when there's no co2 system, installed michael buckley? Okay, so i am not a jade expert right: the jade is honeywell's proprietary, economizer controller um that they created. It actually makes working on an economizer so much easier.

If you guys haven't checked out the jade controller, do so? Okay, it's my favorite. To be honest with you even over the belimo system, i like the jade, but as far as a system that potentially has a co2 error when there's no co2 sensors or anything hooked up to it more than likely. I would assume that you have a bad jade controller. I would be kind of curious to know where the j8 controller is installed.

Oftentimes they'll get installed in the return air section and if so, they can be damaged by moisture and different things like that. So be very careful brad. Thank you, so very much for that super chat man. That is my goodness gracious bud.

Thank you. That is awesome. You guys i'm gon na address this. I say this every time the super chats the channel support all that different stuff.

It is awesome, thank you so very much guys, but it is not you don't have to do it. I'm going to continue to do these live streams and make these videos, even if you guys, don't do it. Okay, i do appreciate it though it does help me out, but again i enjoy doing this stuff and that's why i do it so merit. Thank you so very much for becoming a channel supporter bud.

That is awesome all right, um. Let me see uh all right. Um, i'm gon na make this clear right now, too guys we don't cover politics in this chat. We don't cover politics on this stream, we're going to leave that outside of it.

If you guys have something to share with me that you want to talk political or something like that, feel free to send me an email, but we're not going to make it a public forum, because i don't impose my beliefs on other people, and i don't want Other people to impose their beliefs on other people within my chat or within my videos. Okay, we just keep that out of here all right. Let's see what else um! Thank you guys, all very much for the nice words of encouragement and stuff that i see inside of here. Okay, i'm gon na go and get to my list of things.

Um, oh great, i'm going to cover this right now. Okay, so accidents happen. In my most recent video, i dropped a compressor that sucked right and uh i'm going to be honest with you when it happened. It's it's funny.

I had another technician with me on the roof and i had um someone else up on the roof too, and i had told the other person like hey. I just dropped this compressor like what the heck you know. I i for a second thought. You know what i need to edit that out of my video, but then i thought you know what no i've been trying to make an honest effort to show more and more of my mistakes to you guys, because we all make them.

Okay, guys, i've burnt components up um. I i've never dropped a compressor before that was a first. Luckily, it wasn't a long distance okay. So what kind of damage could have happened within that compressor? Well, i'm not super familiar with the lg compressors.

I don't know their durability or their quality. Okay, they just started popping up in the linux units and every once in a while. You see them popping up in a heat craft unit. I haven't had any bad things to say about them as far as a copeland compressor, i'm picturing a scroll compressor, and i can't really see anything inside of a scroll compressor that would really get damaged unless you really dropped it off of a 20-foot roof or something Like that, for the most part, the components in the compressor are pretty solid in there um.

As far as the lg compressors, i don't know, i mean there's not a whole lot that i can think of that would be damaged inside that compressor. For the small little you know, 24 inches that i dropped it or whatever, but or 12 inches whatever it was um. I can't think of anything, but i mean there's always the possibility. Okay, so uh.

The next video that i released was. The ac has been flat for a long time, and that was the one that i dropped. The compressor, not only did i drop the compressor, but i showed you guys how i actually dropped my torch too. Okay, and i said when i dropped my torch.

While it was still lit, this is why you always want to prepare for the worst okay. Now, whenever i was up on that unit, i had a water hose handy. I had wet towels handy. I had everything handy just in case a potential fire had started.

Okay, you always want to be prepared for the worst in hopes that it doesn't happen, but at least you were prepared. Okay mistakes do happen. Obviously dropping the torch was an unexcusable mistake. That was ridiculously bad, okay and uh.

You know, there's there's no excuse for that, but i did it and i have to own up to it and it happened. Okay, so um in that video too. I wanted to kind of address the fact that that system had been flat for two years, guys. Okay, i don't want to go into crazy details on it, but that thing was flat on install and startup.

I noted it: okay um! I i went through all the proper channels to make sure that it got taken care of under warranty. It didn't happen so be it. Two years later the ac was still down. I had to fix it, okay, so i went ahead and fixed it, but before i did, i bumped the compressor.

I did get some questions. Hey. How come i bump started that compressor. Someone had asked me a comment in one of my videos that i always said do not push in contactors on systems with vfds, and that is a good point.

You don't want to push in the vfd, contactor or anything associated with the vfd contactor. I pushed in the compressor contactor. There was nothing wrong with that. There wasn't a vfd on the compressor.

All was good on that situation. Okay, so on that thing i went ahead and changed the oil. Why did i feel the need to change the oil on that? Well, it'd been sitting flat for almost two years near the ocean, so there's salt water in the air. It's been in a high moisture-laden environment where the equalizer tube has just been getting.

You know the moisture from the indoor blower section right there inside there, so i felt the need to do everything that i could so i went ahead and put high capacity liquid line and suction line dryers on there, and i went ahead and changed the oil okay, Because that oil, in my opinion, would have been beyond saturated and i don't think it would have been savable, i don't think you would have gotten all the moisture out of that oil. In fact, they pretty much say it's almost impossible to get all the moisture out of poe oil. So that's why i changed the oil in that one. Okay, all right! Let me look at the chat and see what i'm missing in here again.

I really appreciate the words of encouragement. I see them all kinds of them. They're awesome guys! Thank you so very much any tips on getting a job in the field while going to school, okay, javier i'm going to cover that at the same time, while i cover, let me see this one. There was another really good question right here and uh hold on um.

Oh, come on it's right here. Where is it um? I forgive me. I don't have your name right here, but there was another gentleman that asked a question: uh he's in the marine corps. Right now and he is getting ready to uh finish his uh, his duties or his obligations to the marine corps and he's going to get out, and he was curious how he could get a leg up if he got into the industry, okay and what he could Do to help himself out so javier and forgive me i don't have your name for the other gentleman.

I'm gon na address both your questions right now so uh, if you're in the marine corps or if you were in the marine corps. Hopefully, you took advantage of the education benefits that you have and potentially went to school and or got job training, while you're in the service. Okay, if you didn't uh, be sure to take advantage of your guys's options to be able to get that education uh, because we all know that in the service you don't get paid enough money. So you need to take advantage of every opportunity that you have, while you're in the service, so the education opportunities are amazing.

Okay, so make sure you do that as far as when you get out how to get one up, i mean i'm not an expert in this, but first off uh be respectful, send an email, make a phone call and go make a site visit at whatever company. You potentially want to work with now. Here's an important thing to understand: make sure that um, you i'm sorry. I forgot my train.

I lost my train of thought right there, but make sure that you're um totally lost my train of thought, wow, jelly brain right now. Um wow okay hold on all right um. So as far as how i think you can have a leg up, obviously go into the job interview. Um get a letter of recommendation from your commanding officer or something like that: okay, walk into a a company, a job interview present yourself and the best way that i could tell anybody.

Even the gentleman that is is fresh out of school and he wants to get a job in the industry. Okay is be honest and be willing to work so walk into that place and offer here's what i suggest. Okay. Now you have to make sure that this is legal in the different areas in california.

This isn't legal, but maybe it is where you're at go to a company and offer to work with them for a couple days offer to do ride-alongs offer to do um. You know just ride-alongs just to go with them, so that way you can kind of see how things work within their operation and then also they can see your work ethics and how you're willing to learn. Okay, very important. Now, if you're in school or you're just finishing school same thing, go knock on their door and say hey, you know what i'm a new graduate you know or i'm still in school, whatever it may be, and i really want to get into this trade.

So i would really like to do a ride along with you guys to potentially you know where they don't have to pay you or maybe they will. I don't know and um just be willing to work your butt off. Okay, remember, though, that you're interviewing the company just as much as they're interviewing you, okay, i feel like uh, i kind of lost my train of thought on what i wanted to say about that, so feel free both of you guys to send me an email to Hvacr videos gmail.com, and we can continue this conversation. I'm sure i'll, remember a few more things that i wanted to say about those two questions: okay, all right, um! Let me see what else it is here: um, all right, uh.

How do i test a liquid line? Solenoid valve that might not be opening fully during a call for cooling. That is a really interesting question. As far as how to test a liquid line, solenoid valve - that's not operating fully. I would imagine that if it's not fully operating that there would be a pressure drop across that valve now, every liquid line solenoid valve is going to have some sort of a pressure drop.

You should be able to lean on the manufacturer to find out how much of a pressure drop there is on that valve. So i would lean on the manufacturer figure out what the pressure drop is. Now it's very important that you understand how to properly size a liquid line solenoid valve. Okay.

With that being said, you do not size a liquid line, solenoid valve based off of the line sizes, the line sizes. I could give a crap about okay. What you want to look at is the uh the amount of refrigerant that can flow through that valve. Okay, what type of valve it is, and you want to look at the manufacturer's sizing instructions.

Okay, the size of the lines going in and out of the valve kind of comes last, all right if you're lucky you might find. If you have a 3 8 inch liquid line, you might find a valve that works properly for the system that you're going to work on and you can go with the 3 8. But it's not the end of the world. If you have to go with a half inch and step it down with a bushing or something like that, depending on the size of your system, okay, so make sure that you're sizing the valve accordingly - and i would imagine again, i don't know your situation, but i Would imagine that there would be some sort of a pressure drop across that valve if there was a problem so measure that pressure drop and then kind of go from there all right, let's see what else we got in here guys.

Do me a favor. Please smash the thumbs up button on the stream. It'll really really help out the stream. If you can please all right, um all right, i'm gon na get to my list of things to talk about.

So the last video that i released was the compressor superheat video, and that was actually a really short video uh today, and that was uh kind of showcasing the new field piece um large pipe clamp that i have right here. Okay, this is the wireless large pipe clamp goes to four and an eighth of an inch right here. Um i made that video for field piece just to try to help them out now, uh alex. Thank you so very much for that.

Super chat that video that i released today is actually a very small segment of a full length, video that i am releasing on thursday. Okay, i just was able to cut out that little portion about compressor superheat. Now, i'm going to show the full system repair. It's a walk-in cooler that i was having problems with.

You guys will see everything come thursday. It's scheduled to upload at my normal time. 11 45 a.m, thursday uh, that's uh, pacific time uh on thursday. Okay, so you guys will see that upload and then you'll get the full explanation on that video of the repair and showing all that different stuff um.

So robert had asked me an interesting question. He sent me an email and he's working on a dell field refrigerator, and he was very curious about a problem that he was having he's running a dell field refrigerator with dual evaporators on the bottom and a cold rail. On the top - and he was having some freeze-up problems on the bottom, so i am going to cover this as best as possible on a live stream and just kind of give you some quick tips here, robert okay, first off, you mentioned in your video that the Unit had a defrost clock, okay on those dell field, f-18 refrigerators, because that's what he's working on on those f-18 refrigerators if they did come with a defrost. Typically, the defrost clock only turned off the top section, and it's really just an off-cycle timer.

For the top section, so that way it can defrost properly. Usually they did not affect the bottom section or the bottom solenoid valve. So keep that in mind that unit doesn't have defrost. Okay, here's where i want to kind of make this make sense for everybody when you're working on prep tables, it's best to stay with the oem control strategy and what i mean by that is on the bottom section robert's having problems with the unit freezing up.

I don't know robert's situation. I would only assume that it still has the oem controls in it, but it's very important to leave the oem controls in there whenever possible. Okay. The reason why is if you're working on a dell field control or a dell field system, they typically have constant cut-in controls most of the dell fields that i have worked on.

They either have a mechanical, constant, cutting control or they have a new digital control. The defrost is typically built into the digital control if you're having freeze up issues with a digital control on a dell field unit, what i would highly suggest is is checking the sensors there's typically two sensors on it. An evaporator sensor and an air sensor make sure that the sensors own out to the proper settings if the evaporator temperature sensor is bad, then the unit might not defrost okay and that might cause your freezing up issues. Okay, so if your temperature controllers and everything are working properly, then you want to start investigating the superheat on your expansion valves checking to make sure that you have the proper.

I think del field wants 8 degrees superheat on those bottom expansion valves. You want to reach out to them and kind of see what they want and verify from there. Okay, i'm not going to go too much further into it, but i would really make sure that you have oem controls in there check the sensors understand the sequence of operation, okay and then for everybody else that doesn't know what i'm talking about whenever you're working on These things you want to try to stay oem, okay, it's so much easier. If you stay oem, it takes the guesswork out of it.

If you put in an aftermarket control on a dell field region that had an oem constant cut in or evaporate or sensing control, then you no longer have that evaporating. Evaporator sensing ability. Okay, so you want to be very cautious about that. All right next question i have uh justin had asked me: he sent me an email.

He watched one of my previous videos from like a year and a half ago, and he was curious about my van tour. I did a van tour a year and a half whatever it was ago, showing a new van that i had and it had a drop down ladder on the top. And what i mean by that is you had the assembly that you pulled down and it brought the extension ladder down to the side of the van, so that way it made it easier for a technician to get. You know the ladder off the top of the thing and he was kind of curious about what my thoughts were about that ladder.

So i really don't like those ladder assemblies, i don't care for the drop down assembly uh, it's very awkward to me all the vans seem to be coming with those drop down things and i've really really thought hard about going back to the normal ladder setups. Now i i never had the ladder set up that came off the back of the van, but i always had the one that just you released a chingus on the side and you pulled the ladder off and you used leverage to get the ladder up. I was always so used to that, so i really don't care for the drop down ladders. I understand the need on the big sprinter type vans that you can stand up in where you can't get to the top of your van, but when i'm dealing with a normal chevy express fan, um uh, you know i uh robert.

Thank you so very much for that super chat, but that is awesome. So when i deal with the, if or i understand you guys need them on those sprinter vans, but i deal with the chevy express and i don't need a tall ladder that you know. I can reach to the top of the ladder rack. So all right, let me see what else we got in here.

Um, oh great question, so chad had sent me an email and he asked me about approach temperature and he said what the heck is approach temperature. I know that's confusing, i see it come up quite often on facebook and the different groups, people asking what is approach: temperature, okay approach. Temperature is something it's not just a linux thing, but linux uses it and has used it for a very long time. Okay approach temperature is an easier way to check condenser performance, okay, so what they're doing is they're taking liquid line surface temperature coming out of the condenser? Okay, comparing it to outdoor ambient temperature? Okay, liquid line surface temperature should be higher than the outdoor ambient temperature, and linux has a metric.

They typically have on their units even on their residential units, that they want you to use approach temperature instead of sub cooling, to check for proper refrigerant charge. Okay, now you got to be careful when you're working on linux units, because they do tell you they have a caveat on the side of their commercial units. That says your your normal operating pressure should be somewhat around this range and then once you get them around, this range you dial in the charge via the approach temperature, and it also says that approach temperature is not valid at all for a grossly undercharged or a Grossly overcharged system, so if it's got way too much gas in it approach isn't going to help. If it's got way too little gas in it approach isn't going to help.

You need to get. You know pretty close to the factory charge and then you dial in via approach, one of the cool things i will say about approach temperature is, it does not use saturation temperatures, so you are not technically having to put your service gauges on there. Now you got to be careful, though, because i did tell you that linux says the pressures need to be somewhat close to factory specs. So, but if you have the system operating properly right, you can kind of do a a non-invasive system test by just checking approach.

Temperature once you know that nobody else has touched it, you know you can just do a normal pm on it check the approach temperature and you could probably be pretty good all right. Let's see what else we got in here, um i'm seeing. I saw a super chat come through. Thank you so very much i think, yeah.

Oh. I already addressed that one robert. Thank you all right. Um original equipment, oem original equipment, manufacturer oem means you can use any parts from any other parts of the unit or manufacturers.

Wait what original equipment oem equals original equipment manufacturing means you can use any parts from any of the other parts of the units manufactured yeah. I don't know what that's confusing the heck out of me all right. You need to make italia how many times i say. Chingas yeah, i say chingus a lot guys.

Chingus basically just means. If i don't, if i can't remember what the word is or what i'm trying to describe, i call it a chinga so um. What was the loudest fan motor that had to be replaced? Ah, that's a good question. John deere fan, i mean those uh, those uh air, moving fans on top of that shopping.

Mall in that mezzanine. Those things are pretty loud when those things all get running, you almost need um, ear protection when you're. On top of that mezzanine working on those walk-in coolers all right, let me see what else um ben had asked me about system vitals, and this was actually a really good question. Ben so ben had was curious about um when a manufacturer's data is missing.

Okay, especially in ben's case really old equipment. How does he know what super heat, what sub cooling any of that stuff when you have really old equipment? And you can't find data okay, first off, i'm going to say that measure quit can really really help you out. If you do not have that information, because measure quick, has a lot of rules of thumb built into it, okay also, you need to just do some. Some normal uh use some normal troubleshooting skills.

Okay understand something: an expansion valve system; okay, doesn't matter if it's residential doesn't matter if it's commercial, if it has an expansion valve at the expansion valve going into the valve, you need a solid column of liquid. With that being said, you can check for sub cooling. Okay, now the question may be - or you can put a sight glass on the system, but you got to be careful just because it has a sight. Glass and the sight glass is clear, doesn't necessarily mean it's fully charged.

Okay, be very cautious about that. A sight glass is literally a window into the system at that point in the system, and it's not telling you anything else. Okay, it just tells you that at that point, you've got a solid column of liquid. I get have had this happen many times too, where people will call me and say yeah.

The sight glass is clear, but in all actuality it was completely empty because a clear sight, glass and an empty site class can look very similar. So you have to know how to check okay. So if you're dealing with a refrigeration system some, you know, i mean, there's lots of rules of thumb out there. You always want to try to lean on the manufacturer.

If you can, if you can't get a hold of them, you can use some basic ones: okay, if you're working on a low temp freezer, you want typically six to eight degrees of superheat for the evaporator okay, if you're working on a medium temperature, walk-in cooler, you Want eight to ten degrees, sometimes 12 degrees of superheat on the evaporator. If you're working on an air conditioning system with a fixed, orifice metering device, you typically want to use target superheat to calculate your um proper super heat at the uh. You know the system superheat, but when you're dealing with air conditioning systems, you've got to be very careful because you really don't want to be checking system. Vitals, superheat, sub cooling, if you don't have proper airflow, got to make sure you have airflow.

So there's a lot of things going on same thing goes for refrigeration, too. You need to understand the basic sequence of operation to kind of know, hey this system's doing. You know everything it can and then we're gon na go ahead and dial in the super heat. The sub coin, whatever it may be, so i don't have an answer to your exact question: uh what what your? What vitals you're looking for on a chill or all this different stuff, but i just kind of use, deductive reasoning and and use some common sense skills.

Okay, do i have sub cooling coming out of the condenser okay, i have some sub cooling so more than likely at that point, i've got liquid refrigerant. Now. Is it still liquid once it gets to the expansion valve? Okay, there's a lot of things going on. There does the system have a head pressure control valve.

Is it a built up system? Does it have a receiver? Does it have an expansion valve there's a lot of variables in there and you have to understand baked basic sequence of operation when it comes to refrigeration or air conditioning? So if i i kind of feel like i didn't answer a lot of your question there bud but send me an email. I can try to answer it a little bit more. Okay, all right, let's see what we got going in here: um, big nate, you! You ask a really interesting question: what is the best flavor of ice cream i'll? Give you the answer to that. That is a super super, easy question: it's pralines and pecan dude.

That's the absolute best ice cream out. There is pralines and pecan there's you guys can fight me over that one there's, no better ice cream than pralines and pecan plain and simple all right. Let's see what else we got in here: um opinions on the r290 air conditioners and servicing them i've, yet to see an r290 air conditioner i've heard of uh r32 in an air conditioner, but never heard of r290. Quite yet, but i work on r290 refrigerators.

All the time, i'm not afraid of them, i'm not scared of them. Just some new procedures. You got to follow so when it does start coming up in air conditioning systems too. It's just going to be the same thing just got to make sure you're pulling proper evacuations.

If you are pressure testing the system, you're pressure, testing with a non combustible gas, don't use oxygen or anything like that. Okay and that you're purging the system before you braise you're cutting components out as much as possible. You have all your safety procedures nearby. You have a combustible gas leak.

Detector just be very, very careful all right, let's see what else we got in here, um uh! Let me see what i'm missing. I want to see these opinions on on the best ice cream in the world. Okay, um, cookies and cream get out of here with your cookies and cream come on man praline to pecan is the best, so all right, all right, cool um, oh great question or great point. Okay, so i posted something talking about compressor super heat today and uh cameron from hvac radio, which is a new podcast on uh, just some really nice guys, it's uh cameron, uh ulysses palacios.

I hope i'm not butchering your name ulysses. I keep saying it that way: uh reuben, macias, rookie, refrigeration, um, uh, chad and then cameron have a podcast together and uh cameron actually chimed in on on my post today about compressor super heat, and he wanted to point out the fact and something that i should Say is: is that um and i'm gon na kind of uh elaborate a little bit more too on his point, but he said that sometimes you want to pay more attention to uh return, gas temperature, okay or suction gas temperature coming back as opposed to uh. The actual compressor superheat and what what he was kind of saying and it kind of makes sense too, is you always want to lean on the manufacturer? Okay, the manufacturer, designed their equipment to operate a certain way so there's times that you're going to run a higher than normal compressor superheat, depending on what's going on. Okay, maybe they've got a sub cooler on the system.

Maybe who knows? There's all kinds of weird things that can lead you to run a little bit higher than normal compressor superheat. So again, it's it's it's safe to say that for the most part you want to have a minimum of 20 degrees, compressor superheat coming back! You want to have a maximum of 30 ish degrees. I think i said 35, but still those are rules of thumb, okay, because the the manufacturer may design something differently. Okay, maybe they've got a dtc valve on that compressor.

That's helping to cool it more or something like that. Okay, so always want to lean on the manufacturers of the equipment to kind of see how they designed it to know. What's going on in there. Okay, all right um.

Let me see what else we got in here on a lockout relay. How does the common side actually form a common? How does the common side on a lockout relay it? Just it? I don't know which relay you're talking about for the most part. It just creates a holding circuit, so what happens is um when, when a pressure, control or something it's really hard to describe this over the you know a live stream, but basically it just creates a holding circuit. Whatever happened to actuate that lockout um, it closed a circuit and it doesn't let it reset until you usually power something down again, send me an email.

We can talk a little bit more about it all right, all right, there's nothing really going on in there. So i'm going to go ahead and um go through my list of things, so this was actually a really interesting question too. Dino had to ask this on my last live stream and i never got a chance to address it uh. He mentioned it again in one of my videos and i'm going to address it right now.

So how do i handle the mask wearing stuff when i'm working with other employees? Okay? So when i'm working with my guys on the roof or in close proximity, different things like that now do not use me as an example. Do, as i say not as i do. Obviously you guys want to protect yourself as much as possible. Now, when i am on the roof with another one of my employees, we we do not wear masks.

Okay, it'd, be one thing if we were like up in each other's faces and we didn't want to cough on each other. But when we're up in the open air we're not wearing masks at all, okay, now we respect everybody. I respect restaurant rules. In fact i was working at a restaurant today and the manager when i walked in the door.

I pulled up my mask and she said: oh you don't need to worry about that here and i said no out of respect for you guys and your establishment, i'm gon na wear my mask when i'm in your restaurant, even if the manager said i didn't have To okay, so i respect everybody. My opinion is my opinion, but my opinion does not belong to me when i am at work. Okay, when i am at work, i represent the company that i work for and i'm gon na do everything that i can to make myself look professional and proper, but when i'm on the roof with one of my employees and they're, okay with it and i'm okay With it, we don't wear our masks, okay, but that's our personal choice. Okay, again, i'm looking out for my company, though all right, so my personal choice is when i'm not bothering the customer when i'm in an open environment with one of my employees, i'm not going to have my mask on it'd, be one thing if he was coughing Or i was worried about it or we're like really close together, maybe okay, but up there, we don't.

We don't do anything with that. Now we also have to be very careful again being a business owner. You got to follow proper safety guidelines, all that fancy stuff, because you're just setting yourself up for liability and stuff all right. Let's see what else uh? What do? What do i think of older, condensing furnaces like you have up north? You have not.

You have one and you're not sure about what brand i mean a condensing furnace. I have nothing bad to say about them. Uh. I will say that a condensing furnace requires more maintenance as far as that goes because you typically have your secondary heat exchanger.

So you got to make sure that secondary heat exchanger stays clean, and i will say that oftentimes on the secondary heat exchangers they're a little different difficult to to get into. So you got to make sure that you keep those units. Keep your filters changed. Keep them maintained properly, also make sure that they're commissioned properly and that your gas valves are set properly, that you don't have restrictions in your exhaust piping, but i mean i don't know what your question is per se.

I got nothing bad to say about them, just make sure that they're installed properly uh john. Thank you so very much for that super chat man. That is awesome um. Let me see what else we got in here um.

What am i missing? Um yeah was there a mistake that caused an entire building to lose power. Yeah i've done that before uh. No, no, not an entire building. I've shut down panels, though by accidentally grounding out a compressor.

I think i mentioned that recently on my video not checking for a direct short to ground and resetting a breaker or reset replacing fuses and resetting a disconnect when it had a grounded compressor. And then it tripped the main that controlled, multiple things. And then, when i went to go reset, the main the main was actually broken internally, so it wouldn't reset um and then the customer had to go through a weekend. I think it was without uh.

It was a golf course they had to go through a weekend without that entire main panel, because they couldn't get the breaker over the weekend, but i've never shut down an entire building. No all right any advice when working on an exhaust that has no data tag. It has been altered to replace and getting proper airflow for the kitchen hood, oh jason. That is a really loaded question that is very difficult, but as far as your exhaust fan is operating, the only thing as a technician that you can do is make it operate properly.

Okay, i am not a design engineer. In fact, i don't even have the tools to measure airflow through an exhaust fan. Now you can go, get one um, there's a couple different people that make special float. It's not even a flow hood.

It's a it's! A special grid that you use to measure uh surface velocity, basically at exhaust filters. Essentially, i can't think of the name of it right now: um gosh, it's right on the tip of my tongue, but anyways they make special flow hoods. Let's just call it that, for the sake of being easy that measure airflow, they have to be higher, cfm hoods um and you can measure the airflow. But it's really difficult as a technician.

I don't have those tools and i can't measure it so all that i can do is get the exhaust fan operating properly. Now, if i'm still having airflow issues, then what i'm probably going to try to do is get a design engineer involved. Your best bet is to reach out to one of these exhaust fan. Manufacturers such as greenheck or captive air and they'll actually have design engineers and they can come out and measure and size up and give quotes for systems they can give quotes to you or give quotes directly to the customer and size up proper equipment but sizing the Exhaust fans to make sure that they were sized correctly in the first place can be a chore for sure.

If you don't have the proper hoods and and tools to measure the airflow, all right, um, let me see, have i ever caused a major fire. No, i have not do scroll. Compressors have built-in discharge check valves, uh, honestly, i i'm trying to think i don't. I don't even know if a copeland has a built-in check valve, i mean they have that's a good question.

You'd have to lean on the manufacturers to see. I don't know that answer all right. Uh did, i know we're actually at 45 views to likes ratio. I don't know what that means, but thank you very much.

Um. Oh, you mean views to yeah. I don't even know all right: um york is the least tech friendly brand change your mind: um yeah um. Okay, let's put it like this, i'm not a fan of york equipment, but i will say that i know people that love york, equipment and hate linux equipment.

Okay, it really comes down to what you're comfortable working on. I work on linux package units and carrier package units dell field refrigerators, manitowoc ice machines all day long uh, i used to hate, mana talk ice machines, i used to hate dell field refrigerators, but once you work on them every day in and out, and you get So used to their quarks and little problems, you actually start to like working on them. So i'm not going to say it's really a problem against york. While i do have some beef with them about some very ridiculously stupid screw placements on some of their equipment.

I will say that i'm just not super comfortable with them. Okay, the same thing goes for like an isomatic ice machine. I don't work on them very often so when it comes time to work on one it's like, i have to stop and think versus with a manitowoc or hoshizaki. I don't have to think too hard because i'm comfortable okay, so it's not necessarily that they're always a crappy brand.

I feel it's just sometimes that i'm not comfortable working on them. I'm just not used to it um all right. If you like york, you're a psychopath. That's true: all right can i talk about 22 furnaces with one thermostat tyler brown.

Honestly, i'd not be the person to answer that one! Okay! I do know that many manufacturers have uh technical bulletins on twinning their furnaces. So i would tell you to lean on the manufacturer and follow their installation instructions, okay, depending on what type of circuit boards and different things that it has. If they're communicating. So you always want to lean on the manufacturer to make sure that you go through the proper procedures to twin it properly, all right, let's see what else um, those that run: okay, so um when to adjust.

Oh yeah, i kind of already answered that one question: okay, so uh! Oh great question jason had asked a question about the field piece: job link, probes, okay, so this is the the new large pipe clamp for field piece, and i have psychrometers and pressure probes and different things like that and jason said. He asked a really valid question. Something that i've been a little bit concerned about too. How do i know that this is accurate, good question? How do i know that my pressure probes are accurate? How do i know that the psychrometers are accurate? So what i typically do? That's a good question.

There's no way to in the field to calibrate them. I mean besides zeroing them out when you, you know at the certain atmospheric pressure you're at as far as the pressure probes, but there's no way to calibrate the temperature probes at the temperature clamps. So i usually just compare them to a known source, so i typically will have a thermal couple probe that i'll dip in ice water every once in a blue moon, verify that it's accurate, okay and then i will clamp it to a pipe put it in the Air stream and compare my psychrometers to them so just find a known source that you know is accurate and compare the field piece probes to them. Now i will say that i've compared the field piece probes in many different times to known sources that were accurate and they have been very, very accurate, i've yet to have a problem with one of them.

But that's my experience. Okay, so um i did. I do get this question a lot too, and this is something that i i definitely want to address. Okay is system additives.

In my most recent video, someone said hey if i was worried about potential acid and that air conditioner that had been open for two years. Why did i not install an acid inhibitor or an acid neutralizer in it? Okay, i also get this hey. Why don't i install leak sealers in my equipment and die and different things like that? Now i'm not gon na lie and say: i've never used any of those things. Okay, i've used dye, probably on three or four occasions.

It's bit me in the ass almost every time, because it's a mess and it's still in those systems but i've yet to see a problem with the die. Okay. But i just don't like it as far as leak sealers as a last resort for like two or three customers. I've installed a leak sealer in a system and i've seen no good results whatsoever from any of those leak sealers as a.

I typically don't want to do that, and i warn the customer against using any additives now. What about um, acid, neutralizers or acid scavenger, or whatever you want to insert name of whatever brand here? Okay, personally, i don't use them anymore, but i will say that for the first good three quarters of my career, i used acid neutralizers on every single burnout. Okay and i still have equipment out there running to this day that has had acid neutralizers put into it. I have personally chosen not to use system additives anymore after reading some stuff on my own hearing, some podcasts talking about it and just kind of chosen to not do that.

Most manufacturers don't want you to put any acid neutralizers any inhibitors. Anything in the system that didn't come in the system. Now i will say you need to be very, very careful when you go to a supply house and they hand you a die pack or they hand you an acid neutralizer and it says oem approved. What does that mean? It means that one at least one oem or original equipment manufacturer said that it was okay.

It doesn't mean that everyone is okay. You may see like a a die that says copeland approved, but if you read in the tech details it says copeland approved for this particular compressor in this particular situation. So don't ever trust the supply houses when they say it's oem, approved or manufacturer approved manufacturer is a vague term which manufacturer there's a bunch of them right. So, just because a die pack or an additive or a supply house tells you that it's safe doesn't mean it's safe.

What i would encourage you to do is reach out to the manufacturer's rep if you want to use an a leak, sealer right and you want to use it on a system, call your supply house and ask them for your coplin compressor, rep or your lg compressor. Rep or your tecumseh compressor up with an insert name of whatever compressor here, ask them for the reps name and phone number, because all of them have local representatives here, call the rep leave them a voicemail, say: hey! You know what the supply house is telling me.