Ah, it's time to chill out and get ready for a mediocre. Qa live stream if you're old enough grab yourself your favorite adult beverage and if you're not stick with apple juice, put your feet up and relax. If you have any questions, feel free to ask them in the chat and now, let's queue up the intro music, hey everybody! How you guys doing this evening, hopefully you're doing well as usual, got a big old list of stuff. I want to talk about and then I definitely want to get to your guys's questions in the chat.

For some reason, my camera looks weird. I don't know why. I think I think someone bumped my camera looks like my shelf in the background crooked or something but whatever it is what it is so, hopefully any of you guys that are affected by the fires going on in Southern California are safe, they're. Nowhere near me, some people have asked the the closest fire.

I think is a good 5060 miles away from me. So it's nowhere near me, but plus I'm in an area where it wouldn't be a problem, but hopefully everybody else is doing good and safe, because it's definitely kind of scary right now. They're talking about evacuations and mass power, outages and all kinds of crazy stuff. So anyways, I wish you guys the best.

I want to start off by talking about an interesting meeting that I had today. So I was able and fortunate enough to be able to go ahead and meet with a manufacturer's rep. I posted on social media was for an exhaust fan. It was actually for the exhaust fan that I had to replace on an emergency Saturday overtime.

Call. I made a video about it. I had to go back out and verify air flow, so we had the manufacturer. Come out and do some air flow calculations with me, and it was really interesting and I was thinking about it after we.

We left the meeting and got to talk with him about. You know when we're lucky enough to have those kind of meetings, and you know granted. It was a service technician from the manufacturer, but it was really cool to be able to get some insight from the manufacturing side or from the service side from that company. Okay - and it was a really cool meeting - and I just kind of like wanted to remind you guys - you know that that's the kind of stuff that I thrive on when I get to meet with someone and pick their brain and ask them like hey.

How does this work, or how do I deal with you, know this situation or, and it's just kind of a cool meeting and you get to walk away learning something you know so try to take those moments that you get to meet with people like that, and You know remember what what's going on and ask the questions that you want to ask, so I had this meeting scheduled for a while. So I had a few questions that I wanted to ask, and I had some theories about that particular exhaust fan and my my suspicions were confirmed if you guys know which video I'm talking about it was a captive air. You know utility style hood and I don't know if I mentioned it in the video or not, but we've been having airflow problems at that particular restaurant since day. One - and you know my suspicions were that we had an undersized ductwork.

Basically, it was too long of a run, something like that. So and my suspicions were confirmed, the exhaust fan is doing everything that I can. The hood is correct. It's what's in between what's interesting is that particular exhaust fan when I got there today, it's rated for one inch of total external static and as it's sitting right now, I think it was running two and a half inches of static or 2.38.

I can't remember what it was, but it was over. Two inches of static is what it was running. So you know. Basically, the fan is being bogged down by the ductwork.

You know, and it's a very interesting and it's a good feeling to to be able to have your suspicions confirmed because I don't have air flow measurement tools, so I can't measure you know the the air across the hood or anything like that. I mean it's just not something that I can justify making the purchase for, because those tools are very expensive, so they were able to come out and you know measure the the flow coming through the hood and just confirm. Like yeah. You know the fans doing everything that I can so anyways.

The reason why I bring that up was it was a really cool meeting and it was, it was cool to be able to talk to a manufacturer's representative to you know, pick their brain about problems and different things, and it was just a really cool meeting and I got something from it. Essentially, you know I was able to walk away with some knowledge that I didn't have and that's you know, that's how I get a little bit of knowledge that I have is because I'm an inquisitive person - and I like to ask questions. You know, and I like to quiz people and ask them like hey: how does this work? How would you have done this? What would you have done differently? You know I'm totally open to criticism, and I say that all the time in my videos and in the recaps and different things like that, I'm always looking to improve my troubleshooting skills. So you know - and it just so happened that this particular person that was there happens to watch my videos.

So it's really interesting to be able to converse with him on that level and he knew you know coming to the site he was like. Oh, this is where you made this video. You know anyway, so it was just kind of a cool little thing and it was just a cool meeting that I got to have so you know whenever you guys get the opportunity to meet with manufacturers whether it be through technical training, a site visit like I Did or you know just meeting someone at a supply house, you know as long as they don't have a problem with it. Quiz them ask them.

You know hey. How do you guys do this? You know pick their brain, even if it's a factory service technician same thing, pick their service brain. How do you deal with this issue? You know because it was pretty cool to be able to kind of confirm my suspicions and different things. So do me a favor and the questions that you guys have, please put them in caps lock.

It really helps us. The next thing I'm going to cover is actually going to address the question, so I have an app that is running on my computer right now, that that saves the chat, okay and I've, because I've been realizing that there's a lot of questions that go unanswered in The chat - and I definitely want to try to get to you, guys's questions, because you guys are taking your time to come to these streams. You know so I want to try to get to them, but there's so many. So it kind of blew my mind when I realized that what there was over there was over 1,500 chat messages in the last live stream.

So you know it's crazy, so I know there's stuff, I'm not getting to so do your best to put your questions in caps, lock, okay, it really helps us to see them and understand to that. I do go through the the chat after the stream is over to try to see what I missed and because there's a lot of there's a little conversation going on in the chat that I don't even see. Half the time. So I try to go through it and see what was going on and then go through the questions and kind of feel them.

If I see something you know good question, so I do have a little list of questions, but when it comes to that you know I can't always answer every single question. There's certain things that you know I just can't get to same thing goes with emails and different stuff, like that too, as I was going through, I've been kind of making it a habit to Monday afternoon. I try to take off work early and I get home and I go through all the comments and emails and Facebook comments that I've gotten since the last two videos and try to address them Monday afternoons. If I you know time permitting, if I can - and you know, there's even some people in there saying hey man how come you're, not answering my question or in the chat from last week, there was someone saying: hey you're, not answering my question: it's not that I'm Ignoring anybody - okay, I'm not gon na try to ignore you guys, purposely, but I'll.

Usually let you know if it's a question that I don't want to answer, but you don't hesitate to post your question again. If I miss it post it again and make sure you put it in caps, lock, that's really gon na help us to get to it. Okay, so - and I try to get to your guys's questions - there's a lot of emails and different things that come through and that's something too that I'm having to struggle with when it comes to the streaming and these videos, because there's you know, I definitely want to Answer your guys's stuff, but I find myself consumed with my phone. You know and I got to pay attention to my family too.

So it's just that battle of trying to find the happy medium between the two, because I thrive on helping people and answering people's questions. But at the same time I got ta, you know, spend time with the family and all that good stuff. You guys get that so hey anyway. So try to put your questions in caps.

Lock. I see a question right here. Indiana Diesel, you said, do I work for myself or a company, so I work for myself in a sense, okay, my dad and I run the company together. He used to work many years ago.

He hasn't worked for probably good ten years. He works in the office. Now so now him - and I you know, run everything together. So yes, I own my own company, so that does probably explain.

I know a lot of people ask me: how do i, how do I spend so much time? How do I do this? How do I do that partially because I'm the owner, but partially, because that's how we, how we service things, I mean we, we try to spend as much time as possible to make sure that we're taking care of the customer. Looking at the big picture, this whole big picture, diagnosis thing, isn't just what I say in the videos. I truly mean it. I like to look at the big picture.

I ask my own employees to do the same thing. You know: hey look at the big picture diagnosed that way, that kind of stuff too. So we try to make sure that we're solving the problem. You know there's a lot of service companies in my area and there's got to be something you got to do something different to make yourself stand out from the crowd right.

You know. I need to be able to charge the amount of money that I charge as a service company, but at the same time I need to be able to justify that cost. So you know I've probably been accused of being a little too expensive sometimes, but I'm definitely not the cheapest. You know, but I'm not the most expensive, but I try to give the customer the best value.

I try to be humble with the customer and let them know that I don't know everything, but I'm gon na do my best to figure things out and try to solve their problems. So all right, let me see, let me see what going on okay, I got stuff in the chat. I definitely want to go to some questions here. Definitely give if you guys have any questions you can send me emails Ernesto you're definitely welcome to send me an email.

I can talk to you a little bit more about that. Okay. So all right, let me go through here. Oh another announcement that I made.

If you follow any of my social medias, I am somewhat active. I'm very active on Facebook, I'm somewhat active on Instagram, but I did announce this on Instagram and I did kind of some questions and I got a lot of responses. But I was just kind of curious because I needed to order some new work. Pants, okay, and I see that question all the time who wears what work pants.

So I decided to go ahead and I'm gon na order, a bunch of different pairs of work pants and I'm just gon na make a quick little video about it. Nothing too crazy, I'm not a review channel, but I thought I'd just do this, because this question happens a lot so and I don't think this is gon na be when I do make a video about it. I don't think it's it's not going to be. One of my two videos a week, it's gon na, be like a bonus video because I don't want it.

I want to always make sure, as best as possible that I try to provide two service videos a week and if I have any other topics, I want to talk about, such as the video on the types of pants and different things. The review, video or whatever I'll make sure that it's a bonus, video, okay, so another thing I want to point out too, when I do that video about the different types of pants that everybody wears and what I like. I basically just ask the question: I got a bunch of different responses and then I went through with my criteria. So when it comes to the pants that I wear when I'm at work, I want them to be black.

I want them to be flexible. I want them to be cargo pants and I want them to be rip, rip, stop or yeah tactical whatever. So I kind of went through the whole list and a list right here, so the pants so far that I'm gon na order is the Dickies tactical pants, which is what I wear right now: five one one tactical pants, Ranger rigs, Wrangler rigs, Ranger pants, Duluth fire Hose cargo pants, the Duluth flex petition cargo pants. I already ordered all of those, and just so that you guys know with this video that I'm gon na make I'm purchasing all those I'm not taking any any free pants from anybody, because I that way, I can give you guys an unbiased review on what it Is that I like about those pants and what I don't like, so those are some of the more popular ones that I saw people questioning about.

I did look at some of the the more expensive ones like and I've actually tried them before, like the Atlas. 46. Cargo pants, those things are like over $ 100 for the pair of pants. I've bought them and I actually returned them because they were really weird, but I didn't buy any of those super expensive, crazy ones.

I wanted to buy just pants that everybody can afford so that way they can kind of get a better idea. What they like you know so anyways, that's gon na happen to some that'll, take some time so work on that alright um, let me see see what's going on in here, chat, see without miss in here, okay, good question D D: hard, oh one! So why do some motors need motor starters instead of just simple contactors? Okay, when it comes to three-phase motors, they typically don't have overloads built into them. For the most part, single-phase motors sometimes will have an overload built into them. When it comes to three-phase oftentimes, we will add an auxilary motor starter on the outside of the unit.

The motor starter consists of a contactor and some type of overload, that's built into the contactor that shuts down the motor on a high amp situation. Okay, you'll typically see it on three-phase, so a motor starter is a advanced way to protect the motor. In a three-phase situation, you will see motor starters on all kinds of three-phase motors every once in a while, you'll see them on single-phase, it's not very often oftentimes. On most of the single-phase motors, they'll have overloads or thermal overloads built into the motor.

So that's why you'll see them? If you have a three-phase motor for the most part, it should have a motor protector on it. I have seen like three-phase condenser fan motors that don't have motor protectors, but they should, in theory to make sure that that the motor is protected. Okay, the whole point of the motor starter or motor protector is to make sure that it shuts down the motor if it ever ran into an over amp situation. So hopefully that answers your question there.

Let's see how our Nesta, you said you feel like. I have more 404 hey. I will say that I can go ahead and call it now and say that I'm sure that I'm gon na get some sort of cancer from refrigerant at some point, not something I want to wish on anybody, but I'm sure that I'm gon na get that all Right, let me see what else we got in here all right, I'm gon na go ahead and get to some more of my stuff on my list right here. Okay, so I had two videos.

I had a walk-in freezer that wasn't working properly and I had an ice machine video, Oh Chad. Thank you very much for the super chat. Real wow. That's awesome! Chad.

I really appreciate that, but so I I'm blown away by that dude thanks. So much. Let's see. Okay, so let's cover the ice machine, video that I did I released it yesterday.

It was a hoshizaki ice machine and it was a call from a couple weeks ago where I had a service call on a hoshizaki ice machine that had that - and this is an interesting one. So the customer called me saying: the ice machine has been beeping for a couple weeks and they have to reset it every morning. The only reset it once a day. So when I went out there they had already reset the machine.

So I walked up and was very weird, which I pointed out in the video. The machine was full of ice, so it's very peculiar when I asked the customer okay, how many times was a BP and they said one time well, they misled me because it wasn't beeping. One time I went ahead and while I was on the service call, you guys can watch the video I found the Dean, it was actually low uncharged. I found some refrigerant leaks and when I went to go, make the repair because I quoted it - I walked up to the machine.

I was the first person to get to and it was beeping three times so in those situations. It's a great learning point because you want to make sure that, even though the customer tells you something you're polite about it, but you got to diagnose it yourself. You can't go off of what the customer tells you, because they can mislead you in that situation. I spent about 25 minutes going down a path because they told me it was a single beep.

I didn't want to ignore what they said, but I also didn't want to be. You know single-minded and only pay attention to that. So I was kind of going through a few things that I thought would cause a single beep on a hoshizaki ice machine. A hoshizaki ice machine has a I'm gon na pull up a screen shot right now.

Let me pull this up right now and I'm gon na show you guys. If you open up a horizontally, has a little manual inside of it. That tells you what the different beeps mean. Okay, so I'm gon na go ahead and pull this up real, quick and transition it over.

So this is the hook out of the Hoshizaki Tech Specs book, which is the book that basically tells you how to work on the Hoshizaki ice machines, and it tells you that a single beep as a high evaporator temperature right here to beep is a two consecutive Harvests cycles that are more than 20 minutes and a 3 beep, which is what my machine was actually doing, was two consecutive maximum freeze cycles. Now I'm gon na go ahead and turn the screenshare off and let's go ahead and turn the webcam back on and transition that back over. So on that particular machine, I ended up finding that it was a three beep safety which was a long freeze cycle, which was because the system was low on charge and it was low on charge because the hot gas valve and the liquid line solenoid valve were Leaking refrigerant so ended up, repairing those it's best to you know, take your time and diagnose properly again, don't just listen to what the customer says. You have to listen to it, but don't be single-minded and just go in there.

Assuming that they're, you know word is gold got to go through it for yourself, so all you guys saw my troubleshooting through that. I was looking at what they were saying, but then I kind of like questioned, hey, wait a minute. This doesn't make sense. I was giving you guys my logic on that and diagnosed it and went through.

So I had a lot of questions on that. One thing I will do right now is: go ahead and post a link to the that troubleshooting manual right now in the chat. That is the Hoshizaki Tech Specs book that I just posted inside there. Also in the show notes of this video one of the first things.

That's posted in the show notes is that link, so you guys can also go to this after the fact. If you don't want to click on it now and download that manual, so that is the Hoshizaki 404 a refrigerant manual, and it covers all the different machines that basically, is the Bible for working on a hoshizaki ice machine. It tells you the sequence of operation and everything things like that. If you guys are interested in working on ice machines or you do work on them download every single manual you guys can get.

Even if you don't work on that ice machine right now have it in your phone. Okay, also one of the questions. I get a lot in emails and different things like that. Is this hey? Where did you get that book? Where did you get this? All you guys got to do is look just ask them.

You know, Google, the manufacturer's name, hoshizaki troubleshooting, you know, and what it's going to do is it's going to take you to their website and you can download that book same thing with Manitowoc ice machines. I somatic ice machines, Vogt ice machines, folded, ice machines. I could keep going on and, on scotsman, all the different ones. Everybody pretty much has all that information available on their website.

You guys can download it. It really really helps you to troubleshoot stuff. Ok, let's see, let's see what I'm missing in the chat here um. Let me see what is better scroll, compressor or screw compressor.

Well, they both have a total different use, screw compressor, you'll, typically see on more big industrial stuff, scroll, compressor, you'll, see on large commercial to small commercial and then you'll usually see reciprocating compressors. On smaller light commercial stuff, so it really depends on what the application is. Each one's gon na be better. I honestly have never worked with a screw compressor.

Typically, I imagine you'd see those on chillers and big industrial processing equipment. I pretty much work with reciprocating compressors rotary come. I guess I guess I might have worked with a rotary compressor once or twice on a mini split and then scroll compressors. What I work with all the time.

So what would cause condensate on the ceiling of a walk-in freezer? Well, so what would cause condensation is heat and moisture coming into the box when it's cold inside, so what it's gon na do when you open a door, leave a door open. You have moist outdoor air coming into the box, it's gon na collect on the ceiling and then typically refreeze and then drip off when it's in a defrost. Another thing that can cause condensation is heat being added to the box, while it's in operation. So if your defrost is running too long and your defrost failsafe or the defrost termination is not working properly, that can also cause condensation.

If your fan delay is not working properly, that can cause condensation, there's all kinds of issues. The the the main issue that you see condensation on a walk-in freezer is typically a door being left open. The second issue is going to be some sort of a defrost problem, whether it be a fan, delay limits which not working a defrost termination limit switch, not working or the defrost being too long in general. Those are the main things that would cause condensation.

Other things warm air coming in the box that could be caused by a door being left open or a door gasket, that's bad. So hopefully that answers your question there, but any questions that you guys need more information, definitely send me an email to hvac our videos and i'll gmail.com and i'll definitely try to get to them. What hvac related books would I recommend for somebody in trade school currently on GW, modern refrigeration, plus? Stick Wars, commercial, refrigeration? Well, both of those books are pretty much the refrigeration Bibles. I would recommend the dick Wars.

Commercial refrigeration is probably my number one book, but the modern refrigeration is definitely a good one too. So, let's see what else, let me see. What should I do if there's a 220 volt 3-phase motor that caught on fire well obviously need to figure out why it caught on fire in the first place? So we need to have you know? I don't know if you're a technician or not, but you need to have proper voltage going to the motor. You need to make sure that the motor is not running over the recommended amperage of the motor and those are the two things that are probably gon na.

Be the first things I would check so mr. ice. Can I replace just a relay on a ke 2 controller? I have never replaced just a relay. I believe that circuit board on the key to therm temp controllers are sealed, so the manufacturer would probably recommend that you go ahead and replace the entire controller.

I'm sure that there's people out there that would try to replace just a relay. Take the waterproof coating off the board, all that good stuff, but that's not my style. I would just replace the entire controller. So, let's see what else we got going on here.

Let's see how can a slightly low charge on an ice machine go on 60 minute? Freeze cycles so Ralph it just depends okay, so I don't know if you're referring to my video or, if you're, referring to your own ice machine. But in my video I was extremely low uncharged because I believe I needed 10 pounds of gas and I think I only recovered five-and-a-half pounds or something like that. Something close to that. So I was extremely low on charge now, if you're working on a self-contained ice machine, I mean the the time that the refrigerant charge is really gon na matter on an ice machine.

Hey Joe. Thank you very much man. I really appreciate that super chat for those of you guys that have taken the time and taking your hard-earned money and giving me a super chat. Thank you very much.

I really appreciate it. It's not expected from anybody, don't feel obligated at all, but I do really appreciate it. Okay, that's not why I do these, but it is an added bonus for me. So, thank you so on an ice machine, the biggest time that the charge is really gon na matter is in a harvest, okay, in a harvest.

We need all the refrigerant that the system has for the machine to work properly, because, most of the time, the ice machines use a hot gas defrost and when that happens, we need extra refrigerant in the system. So that's when head pressure, control valves really come into play. If you have a remote ice machine, it's pretty much. Always gon na have a head pressure, control valve and often times they'll, throw a fan cycle control on there too, because we need that extra refrigerant and that extra heat to help remove the ice from the evaporator.

So ice machines are extremely critically charged and it's very important that the refrigerant charge be absolutely correct. Okay, so why do suction transducers go bad prematurely? You had to replace one that was two months old. That's a good question Anthony! It really depends on what was wrong with it. I don't know.

I can't speak on why exactly your suction pressure transducer went bad. Is it possible that something I would imagine again, I'm gon na step out on a limb here and say a lot of times. Refrigeration, parts and components go bad because of improper installation or improper refrigeration practices during installation people not making sure that they're doing things correctly putting liquid dryers. You know when as much as possible, purging or braising with nitrogen flowing through the system pressure transducers, I imagine, can be very sensitive to contaminants that are in the system.

So I think it's really important that we make sure that we're following as many proper refrigeration practices as possible when we're starting up or installing a system, I'm gon na, be the first one to say that I don't follow all the proper refrigeration practices all the time. I get called out quite often on. Why didn't you wrap that expansion about before you braised it in how come you weren't braising with nitrogen, I'm not perfect, okay, so but yeah as far as your situation, I don't know why your pressure transducer failed. I don't see a lot of pressure: transducers faylene.

I have installed a lot of systems with pressure transducers and I can't say that I've had any problems with them at yet. So that's just me: how do you know whether to repair or replace your HVAC system? Crazy Floridian, so, first off I would say you need to make sure that you have a good mechanical contractor. That is giving you an honest opinion. Now.

I know Florida is a big state. I will say that I do know a contractor. That is a very good contractor. One of my mentors that I look up to his name is Brian Orr and he runs a service company in Florida he's in the Orlando area.

So I don't know if that's anywhere near you crazy Floridian, but his name is Brian Orr and his company is kalos, Kate alos. I would highly suggest you look up Brian if he is any he might service. I don't know what parts of Florida he services again. I know is a huge state, but definitely look up.

Kalos they're a great service company and, like I said, Bryan the owned one of the owners of Kalos, is a mentor that I look up to so I would definitely suggest you look into his service company and have them come. Give you a proper diagnosis on your system, so alright, let's see what else we got make sure you guys try to put your questions in caps lock. Okay, did I talk about the captive air rep about the poor design of the other exhaust fan, so Scott? I'm not going to throw anybody under the bus, but we did discuss some issues with with how difficult it was, and there was some solutions given to me that I could have tried. Okay, again, I don't want to be throwing anybody under the bus, but I did stress some of the issues that I had in concerns that I had with that particular exhaust fan and, yes, I did make sure that they were known so yeah, I'm gon na leave.

It at that, alright, let's see what else so HVAC kid do. I have my seat 20 and see 39, so I have a/c 20 and c3 a license. So I don't have to see 39 all right. Let's see what else here yeah, I don't know crazy.

Floridian a few services, your area or not, but I definitely give kalos a call. They may even know a reputable contractor if they don't service your area, I'm sure they can give you a recommendation on a good contractor in your area. So Brian, like I said, he's one of my mentors, so I definitely look him up. So does a larger HVAC system offer better performance, crazy, flirty, and not necessarily so a properly designed air conditioning system is going to address cooling at the same time as addressing the latent load or the humidity.

Okay, that's the easiest way to look at it. So but we also need to address your infiltration, the amount of heat coming into your building, there's some things that we can do some tests and some calculations that we can do to make sure that your system is sized properly over sizing. An HVAC system is just as bad as not having any EAC system as all at all, essentially, okay, so in Florida you guys have high humidity. So if you oversize your air conditioning system, potentially you could have mold issues because you're not going to remove the humidity from your building and you guys already have enough humidity outside an air conditioning system.

That's oversized is actually going to add humidity to the building. So it's gon na make it worse and muggy inside there. So you need to make sure that you have a quality company sizing your equipment, that's I'd, say the number one thing is to make sure that your equipment is sized properly. You need to do proper.

What we call load calculations on your residence to make sure that it's sized properly oftentimes once they do a load calculation, they can address all kinds of issues and make sure that you're upfront with the contractor, whoever you choose in the beginning and let them know hey This is a hot spot in my building. I never get airflo in here and address those issues too. So alright, when am i coming to the Bay Area to visit Ernesto, I don't know man, you know my father-in-law lives up in Sacramento, but it's been a while, since I've been up there so I'll. Let you know, though, if I'm ever up in the area.

I'll definitely hit you up. So, oh that's a great point or nest. Oh, so any of you guys that are local to Southern California. I do at get people asking me all the time I am gon na be at the I hacky trade show.

The I hacky trade show is a just one of our HVAC conventions or whatever we have every year in Pasadena California. I have a date right here somewhere on my my list of things to talk about, though it is for whatever reason the date for the Oh November 20th, I'm gon na, be at the I hacky trade show. For the most part, I plan on taking the day off from work, so I am gon na be at the event I'll be walking around. It's not a very big trade show it's just a small little convention that we have.

So anybody, that's local here to Southern California. If you see me stop me say hello, say hi I'll, be there. I plan on being there for most of the day, but I don't know if I'm gon na be there super late. I believe it goes to like 7:00 p.m.

I'll probably duck out around 4:00 or something like that. There's a bunch of training classes and different things. So anybody that's gon na be make sure you stop and say hello to me. So, let's see what else we got, what do I use to detect leaks on our 290 systems? That's Anthony Lovato, so I use a combust gasps leak detector made by detect.

It's called the info con gasps mate info. Con detects same thing, so that's the leak detector that I use for our 290. Essentially, it can detect natural gas too. So it's just a combustible gas leak, detector, so HVAC rookie, say hey to me broad, but send me an email.

Let me know approximately what time you're going to be there and I'll try to figure out make sure if I'm gon na be there or something like that. So is an orifice valve and an expansion valve the same things Adam Brecker, honestly, I don't know what an orifice valve is, but give me some more context. Send me an email HVAC. Our videos at gmail.com send me some pictures because there's a capillary tube, which is an orifice there's, a piston which is not a valve, but I guess someone might call it an orifice valve.

I don't know, though, that's a kind of a vague question, so I need some more context there. Should you tell your boss to go pound sand tired of his dumbass Evon, six, six, eight four! That's that's hard to say, but you got to do what's best for you and your family now keep in mind. The grass is not always greener on the other side, so I don't know what your circumstances are, but yeah I mean you got to do what's best for you bud. So what camera do I use for my videos? Crazy, Floridian.

I use my phone. It's a Galaxy S, ten plus all right. How do I test an exhaust fan motor to see if it's on its last leg, so Jenny an exhaust fan motor? Basically, you know we have. We can test the amperage or the the work that's being done by the motor and the manufacturer rates, the amperage of the motor it's usually written on the motor.

So we can use a special meter electrical meter or clamp meter and we can test the run load. Amps of the motor to see how it's operating, we can also test the voltage coming in, and you can also do some audible tests to listen to the bearings in the motor make sure that it's not overheating and make sure that everything's working properly. So, there's all kinds of tests that we can do as technicians to make sure the motors are working properly. What is the best way to test an ECM motor, so Jesse Torres? What I would suggest you do is lean on the manufacturer and talk to the manufacturer and see what they recommend and how they want you to test the ECM motors.

So they do make some Esther's, but essentially they're. There they're there to test the ECM motor to see if it's the module, that's failed or if it's the motor, that's failed, but for the most part, you're gon na test, an ECM motor by taking an amperage reading and by testing proper voltage going in and make Sure that it's performing correctly, but you always want to lean on the manufacturer of the equipment, to see what they recommend to do. You know preventive maintenance tests and different things on it, so recommendations on in-demand specialties for a rookie to focus on ok, so Ben first off, you have to know the fundamentals. Dude, the fundamentals are: what are the backbone of this industry? You have to understand refrigeration diagram.

You have to understand how refrigerant flows, if I would have anything, it just depends on what you want to get into. Ok, there's different sectors. I work in the restaurant refrigeration sector, so I work in light commercial refrigeration. My air-conditioning units aren't any bigger than 35 tons.

My refrigeration units aren't any bigger than 5 horsepower exhaust fans. Ice machines, aren't any bigger than 2,000 pound ice machines, and that's about it. So but if you want to get heavy industrial, it just really depends on where you want to go and what kind of nice you want to work in one of the more popular things in our industry. Right now is V a V or V.

Rf systems are not V a V V. Rf systems is what I should say so variable refrigerant flow systems. Those are very popular right now and they definitely do require some new skills to be able to understand lots of electronics and then lots of circuit boards. Lots of computer usage - those are definitely a new emerging technology.

That's kind of getting really popular, I'm not seeing any vrf stuff in the restaurant side, mainly ice machine work. So when why do I say I may get cancer from four? Oh four, eight! So refrigerants all pretty much caused cancers, so they all pretty much have bad components in them. That aren't good for your body and I joke when I say that we breathe and work around refrigerants too much. So I joke and say that I'm gon na end up getting cancer from one of them, but it's more of a I'm just kind of poking fun at the fact that it just seems that there's more cancers being you know, brought to our attention every single day.

I'm not trying to make light on any situation of anybody. That's going through cancer, that's a horrible horrible thing, but I definitely think that we work in a dangerous environment. We need to proper or we need to follow proper safety practices, to make sure that we are protecting ourselves so make sure that we have leaking systems. We're not breathing in that refrigerant.

Make sure that we brazing on systems we're not breathing in those products of combustion. From when we're braising things like that, okay just got to be careful and cover our ass, make sure. When we're working in residential attics that the systems the building doesn't have asbestos and different things like that. To make sure that, because we do come in to hazardous materials, when we are working so we need to watch and be careful to protect our bodies and protect ourselves.

So let's see what else HVAC kid, why isn't 507 more popular? That's a really good question and I honestly bet you: it comes down to manufacturers and who had better lobbyists to be honest with you, so cuz 507 is pretty much almost dead on the same refrigerant is 404 same principals. I think there's just a little bit of a different mixture there and it's probably different manufacturers. If I, if I was stepping out a limb, I don't know that for a fact, so yeah that's funny or nesto, okay. So what I'm gon na do right now is I'm gon na play a little video clip that I prepared for you guys.

This is a video and I'm gon na try to get this right today of an iced mean of a deli case. This is an older deli case that we don't run across this kind of stuff very much anymore, so I do service a building that has this particular gravity-fed deli case. So there's no fan motors inside of it. It was definitely an interesting situation.

This particular one I'll post the clip right now and then let you guys take a look at it. Let me go ahead and screen share. Let's see if I can do this real quick, if I can do this properly and I'll definitely make sure to try to turn the volume up this time and make sure that I properly share this so that what you guys can hear it. So I'm working on a really old-school deli I'll show you some video of the case downstairs in a minute, it's kind of hard to get video, because you know I don't want to freak out the customer, but so far their complaint is that in the morning it Will attempt at 40 but then in the afternoon it falls off the map.

50. 55 degrees. So I changed the compressor on this last year, converted it to 134a. It was in our 12 system.

I noticed when I come up here. Sightglass is flashing, pretty good. It's not violent, but it's flashing, and then we definitely got a fan mode or not spinning here whether or not it's bad, I don't know yet yeah we got it back and it's bad motor. Then we got oil everywhere on that discharge line so suit.

We can get into so today. We've got a complaint of a sanyo gravity case. That's got price built up inside of it. It kinda just to me, looks like it's been getting to hold, but they have said that they're not freezing their food, so I'm just getting it opened up, so I can defrost it get down here to the thermostat.

So I can check the thermostat setting. Here's a little trick for getting these this style of fan blade off. It has a quarter inch square end on it. You got to get a Crested wrench and it's kind of tight, so I'll get a long quarter, inch extension for my socket set, and then I have these little handy tools that you can put bits in one side and you can really get on here and torque Down on the end, with crecer without channel locks, so it helps you to get in there when you have really tight situation, see, and this thing has a quarter inch end and it's on backwards.

Okay, so I've got the unit charged up. I actually had to back off on the refrigerant charge a little bit. I'm gon na have to come back the customer already loaded up the deli case and I'm getting pretty low super heat, the compressor, which means that I've probably got a flooding valve downstairs. So we'll have to come back and dial into the all right, so that particular case.

I actually put two different clips inside that thing and I know I popped on my chat while I was doing that, but I actually have two different clips in there and that was two different visits, but I just kind of threw him together with the little clip Of the case to show you guys what it looked like so the second time that I went out, which is a couple months later, the case how to plugged up drain and that's what caused it to ice up. So I want to make sure that people understand when you're working on gravity cases like that and the reason why I call it a gravity case is because it's working off of the principle of there's no family doors inside of it so heats gon na rise, cold Airs gon na fall, so you we call that a gravity case hold on. So we call that a gravity case and it basically uses the oh man wow that really sucked I'm gon na cut my hand right now. It uses the concept of well that really sucked use the concept that refrigerant fall.

I mean the cold air falls, basically, okay, so the hot air is gon na rise, and in that situation the first call was a refrigerant leak. I ended up top and off the charge, found a leak and repaired it. It was up on the roof at that vibration, absorber and the second time that I went out. They called me because it was all iced up because the drain was plugged up, so they don't really do a preventive maintenance at that particular customer.

So those are the kind of issues that we run into, but we still do run into some of that old stuff. When you're working on a case like that, I don't work on those very often honestly. That's the only one of those I've ever worked on. That's a gravity case yeah, that's the second one.

I've worked on so in that situation, I'm gon na utilize asking the Google okay. When I have questions hey, what kind of super heat should we run on a static or a gravity case? Okay and I'm gon na Google it and I'm gon na, find probably an article on the HVAC talk message board, which is a great resource for us technicians and we'll be able to ask questions to other service, techs and hey. This is what you need to do. You know it's very important that if you're ever going to top off the charge on one of those cases that you made sure that the system is completely free of any ice or any frost, they typically are gon na run a lot lower super heat than what You expect them to run and they're typically going to run a flooded, evaporator, so very common to run into those you got to make sure you uh ask the right questions and make sure that everything is what the hell yeah.

Thanks for removing that comment there Adam yeah, so let's see what else we got going on here. What am I missing inside the chat? I want to make sure. So how do I go about recording at a customer's location? Do I talk to them about it? First, okay, so here's the deal number one make sure that if you're going to record at a customer's location that you don't build them for any extra time that it might take you to do any videoing while you're on site number. Two always want to ask the customer for permission, want to make sure that they're, okay with it, if they aren't, you need to follow their rules.

I mean you can't record it a situation where a customer doesn't want you to so you just got to ask people upfront, make sure they're good with it and if they are then go to town. So, let's see what else a load calculation apps, please, the only load, calculation app that I know of for residential, would be right. Soft and I'll use a refrigeration load calculation. I think I've mentioned it before.

I use an app called R Us box, where I use different ones like that. Rus box, I think, is the one that I use for refrigeration. So all right should the externally equalized equalizer be placed before or after the bulb. That's an interesting question and you're gon na want to lean on the manufacturer.

Talk to sport. Learn about that, because I've actually heard both ways. I've heard people say it's not a big deal, but then I've also heard spoilin say that if you have these particular problems, you should definitely make sure that it's either before or after so lean on. Sport'ln and they'll definitely have that information.

For you, that's a hard one. So what are my thoughts on ultrasonic leak detectors? You got the Accu track and it's been great if you like it Jesse. I think it's great one of my good friends who makes YouTube videos. His video at his channel is called HVAC our survival and his name is Rick and he uses ultrasonic and he loves it.

So I've never used an ultrasonic before so you know to each their own, so alright, yeah phosgene, is always great for brain cells. Definitely phosgene for those of you that don't know is a product of chlorine, refrigerants that contain chlorine and when they hit a flame, it creates phosgene gas. A lot of people think that it's it's same concept, but you can also get some weird gases that come out of normal refrigerants that don't contain chlorine, but a lot of people call it phosgene for the same thing but yeah. It's not good.

I've had lots of stories with phosgene, it's not it's not fund and that's what's so, not good for your health either. I definitely want to get to some of these questions. So, okay, great question from the last chat Cory Sayer had asked me if, on in LA see valve this is an l AC valve. It is a head pressure, control valve HP, c valve HP, r valve all kinds of different things, but this is an l, AC style valve and he asked me this is a cutaway that I did on an l AC valve.

He asked me in the last chat if, when the bulb loses its pressure, so there is a little element right here and if it loses its pressure he says: does the valve fail closed or fail open, so this particular valve if the sensing bulb looses its pressure? Okay, then, the valve is going to fail into the normal operation, which is a non bypass mode. The only time that this valve will bypass is if the bulb pressure exceeds the refrigerant pressure, the discharge pressure in the system, so this particular valve on the back of it. I don't know if you guys can read that or not now. I don't think my camera is gon na focus, but it says 240 psi.

So this particular valve I can tell you, is for a Manitowoc ice machine because it's a to 40 psi valve and it bypasses or starts to flood the condenser at 240. Psi to maintain a proper head pressure for proper cool vapor discharge or cool vapor defrost, essentially, okay. So if this bulb lost its pressure in the top of the bulb, then the valve would fail in the non bypass mode and allow the refrigerant to come out of the condenser and go into the receiver directly. Okay, so that's how this valve functions, and hopefully that answers your question there Corey Jenny you had asked in the last stream if I would go on any roof and or will I refuse to go on a roof due to safety? Yes, my safety is the number-one priority.

I don't care how busy the customer is. I don't care how important their piece of equipment is to work on. If I don't feel safe, then I don't do the work. Okay, my safety is my number-one priority.

I need to go home to my family at night time. Doesn't matter what is going on with the customer doesn't matter how important doesn't matter, how much money they want to pay? My safety is my number-one concern period. Okay, all right Broderick asked me: when: is it important to use a p-trap on air conditioning unit? Okay? So this is an interesting question number one you need to lean on the manufacturer. You need to talk to the manufacturer of that particular equipment.

You need to ask them what they recommend. I will tell you that we need a p-trap on an air conditioning system when the drain is on the negative air pressure side of the system. Okay, if you have a negative air pressure, then theoretically, we could pull the air through the drain and not allow the system to drain properly now. The reason why I say lean on the manufacturer carrier is one of them.

They oftentimes will have an internal p-trap same thing with rude or Ruud. They will have an internal p-trap on some of their units, not all of their units. So you need to know the equipment that you're working on you need to know how to identify properly a internal p-trap, to make sure that you know what's going on okay, so hopefully that answers your question there broderick broader hugh, also asked me a question about what Would happen if a make-up air stopped working on a building, okay, so a make-up air? Is there to balance out the building all right, I'm gon na give you guys a little example. I've given this before, if you take a paper bag and you put it over your mouth and you suck while holding the bag against your mouth right here, the bag is gon na collapse into.

You know nothing essentially, okay, but if you cut a hole in the bottom of the bag, the proper size when you suck into the bag, the air is gon na flow right through the bag, and it's not going to collapse. That's an analogy that we use to describe building balance. If we have a restaurant that has exhaust fans running on the building, we can't just put an exhaust vent in there and suck the dirty air out of the building. We have to put makeup air into the building to make up for what the exhaust fans are suck.

You know think of the paper bag if we don't have the hole in the bottom of the bag when we suck on it it collapses around, and you know no air flow comes into the bag right. But if we cut the hole in the bottom, which becomes your make up air and we pull it through, then the bag or the building is balanced properly. So if we turn off a make-up air unit to a building or if a make-up air unit is not working, the building is no longer gon na be balanced if it's requiring that make-up air to be balanced, basically, okay, so the make-up air is to the operation Of the exhaust system for that building, another thing - that's very important - is oftentimes on restaurants. We will have direct fired, make up air units, so that means that we have heating that tempers the outdoor air, so it not so much here in California.

In some of the mountain communities I have one of them, but in the Midwest and back east they have direct fired, make up air units that temper the outside air. It's not there to heat the building, but it's there to make that negative.