Hey everybody: how are you guys all doing this evening? Hopefully you guys can hear me loud and clear. If you guys wouldn't mind letting me know in the chat I'd very much appreciate, it was changing some settings on my mic today, so apologize. If you guys saw the the accidental test, video that I released earlier, I was testing some audio settings and I didn't realize it went public, so I noticed that, like 40 people had watched it real, quick or something I'm intended for it to be private. It was just me saying, test test into the microphone so right on, so I hope that you guys are doing okay, where it's a cold.

You know, I think, that's pretty much everywhere in the United States and Canada, except for California and Florida, California, we've been getting some rain, but for us cold is 50 degrees. So you know we don't really know what cold is so I hope you guys are all doing okay right on I'm glad you guys can hear me. Okay, thanks for letting me know in the chat. I really appreciate it.

Don't want to have a repeat of the video where nobody could hear me. That was a nightmare, so I'm gon na do a little introduction here. I'm assuming that everybody knows who I am okay, but you know my name is Chris. Obviously this is my channel HVAC.

Our videos, I do a live stream, typically every Monday night at about 5 o'clock p.m. and I just try to recap the the videos from the previous week. Ok, so I upload two videos a week on my channel Monday and Friday, typically really early in the morning, and then I just kind of do these live stream recaps to try to answer questions and stuff. A lot of you guys that are watching this in the chat and everything already know this stuff, but I knows a few new people in here.

So do me a favor before I forget guys, my buddy Isaiah is in the chat. He's got a YouTube channel called HVAC with Z. Si okay! Isaiah is a good kid. If you don't already know I'm gon na post his channel name right there.

Okay, you guys search that on YouTube. If you guys don't already know, I'd really appreciate you guys go over to his channel and give them a subscription okay, I hope I'm not gon na overstep my bounds here Isaiah, but I'm just gon na explain a little bit about you. Okay, Isaiah's a kid that is living with autism and he is working with his father trying to learn the trade he's made a YouTube channel and he is trying to just grow his audience. Okay, he give him, you know, be patient with him, and you know just watch he's just trying to share his experiences that he has okay and I really appreciate his channel and I do like to watch it.

So it would really mean a lot if you guys could go over and give his channel a subscription leave them a comment. Let him know what you guys think leave him some nice nice comments. There that'd be really nice. Okay, so you know what I want to talk about right now.

Is I just kind of want to recap on my videos? Okay, just want to cover a few things that don't get to questions and different things in the chat. Okay, what sorry I'm looking at the chat here too, as I'm going yeah Isaiah's really trying to hit a thousand subscribers, so he's almost there so he's about just a little over halfway there. So so, my video that I released today was on Akai rack, blue prep table okay and I've done a few videos on these blue prep tables. But I always get these questions about them and I just kind of want to answer some of the questions that I get about them.

Okay, so the glite are that the Chi rack glue my red glue. The Chi rack blue prep table is essentially a tiny chiller. Okay and what it does is: we've got a normal condenser, but then we have a flat plate, heat exchanger as the evaporator coil, and it's essentially just exchanging the heat. It's just transferring the heat from the glycol.

Okay, so they've got a glycol pump on that unit. That is circulating all the time and it's pumping glycol into the base section and into the cold room. Okay, so on these little Chi rack regions and it's the blue line. Okay, because they have a line before the blue and I'll explain that in a minute, but their blue line is their glycol ones.

Okay, they do not circulate refrigerant in the evaporator and/or, the pan chiller, the only place that the refrigerant is at is in the condensing unit, and it stops at the flat plate, heat exchanger, the flat plate heat exchanger is typically right behind the the condenser you have To take the back cover off the back of the box, and you can usually see it, it's all insulated up, so it's not anything you can take apart and trust me. You don't want to take it apart unless you're looking for a leak. Okay, I have yet to find a leak on one of their flat plate heat exchangers. They do have a common leak place and that is typically on the suction service valve, going to the compressor.

They typically leak right there or I have seen them on the liquid line receivers. King valve packing has leaked a lot too okay, but anyways. So the Chi rack blue region was originally a redesign of Chi racks original model which Kyra released in the mid 90s, and they were super popular in the early 2000s. They came out with the first what they called their their bachelor, and that was not a very good design, but they were very, very efficient, still one of the best innovative refrigerators for heating product in the top section cold they pretty much own because they changed and What that does is it allows them to control the temperature a lot more evenly? Okay, so there's no more fan motor up in the top section, it's just a couple rails with some glycol pumping through them and then it pumps around the rails and it maintains a really good, even temperature, on their pants up in the top.

Now one of the flaws that they have - and this is something interesting is - is that they adopted the Intel at all control system. So Intel at all was the control system that was unique to Traulsen. Traulsen is a major refrigerator manufacturer pretty much. They were one of the best, if not the best for the longest time, and they came out with their IntelliJ and the intelligent line is saying he was a smart defrost system in it used sensors and the weak spot on the intelligible is the sensors.

The sensors are constantly failing. So when Kai rack first designed their blue system, they came out with their own patented. You know control system, but when they merged with Traulsen, they got bought out by a company called Illinois Tool, Works and Illinois Tool Works just kind of gobbled up everybody. I believe they gobbled up Hobart.

I could be wrong on that one, but I know they gobble that Traulsen Kai rack and then there's a bunch. They are conglomerate. They got tons of stuff okay, so when they did that they, they kind of you know consolidated some of their stuff and then all of a sudden, the Kai rack blue regions adopted the intelligent module. So what you're gon na notice - and I got a lot of questions about this - is that the sensors it you still have a lot of the same methods as checking the sensors as on the Traulsen units, but they've reprogrammed the controls and basically took the Traulsen controller And kind of made it their own okay, again, they're the sister company they're the same kind of a thing, but so, for instance, you know the the cabinet and the evaporator temperature, and then you have the liquid line temperature that was on the Traulsen and teletrac.

Iraq. Has kind of changed it up and reprogrammed it and does something different. So you know when you see me scrolling through those inside the video you know it's. It is a little bit different, but it still uses the same like passwords and different things to get into the controller.

Okay, so well, in my opinion, the again. This is just a bold statement, but in my opinion, the kai rack blue system is probably one of the best refrigerators out there. As far as prep tables go for the customer. Now they every refrigerator has its problems and that's just my opinion.

Okay, a lot of people may say they don't like them. I just like them because they have a really good, even temperature, and the problems are very, very predictable. It's really interesting too, because earlier in the chat we were discussing, how I tend to notice that I get service calls in waves so, like lately, I've been working on a lot of these kayak blue systems and then I'll go for months without working on them. You know I'll be working on something nice, it's just kind of funny how it happens.

I'll get a bunch of ice machine calls all the sudden and then I'll be doing reaching calls and whatnot so anyways back to the operation of the Kyra unit. So there's three sensors on the Chi rack blue unit: okay, there's a red sensor, I'm sorry, there's a green sensor, a blue sensor and a yellow sensor. So the yellow sensor is under the ll. What do you want to call it a feature inside the controller? Okay and a notic Traulsen, that would be the liquid line sensor, but that is not what it's being used as on the Chi rack units.

Okay, the ll sensor is the air temperature sensor inside the box that has no operation on how the box works. Literally, that is just a display for the customer to see a digital thermometer readout okay, so that sensor does not affect the operation of the unit. Then you have your green in your blue. Okay.

The green sensor is a is the temperature controlling sensor? Okay, so that one controls the temperature of the box and the blue sensor is the defrost sensor so factory those sensors are mounted up against the evaporator and schiller. The cold rail up on the top and they're encapsulated in foam, and so what happens is when the sensors do fill the factory advises you to go ahead and relocate the sensors into the glycol bath? Okay, so they tell you that the operation will be just fine. It'll still defrost like it's supposed to and everything so like you saw in the video. What I do is I take the two sensors.

I use the zip ties to make it nice and straight it's kind of difficult to fish. It all the way down, because you have to get it all the way into that copper tee at the bottom of that glycol reservoir. Okay, you have to make sure it's down there, because if it's not it becomes a problem and another really good tip is when you do that. You need to zip tie the sensor wires, so they don't get accidentally tugged out and then also like.

I showed in the video you want to take electrical tape and bundle it up on the bottom side. So that way, that's another added safety precaution to make sure the sensors don't get yanked out of there. Okay, so there's really not a whole lot. There they're really not that difficult the regions - okay, they're, pretty simple - you really shouldn't - have to get into the features they give you a very limited temperature control range as in I think, like some of them.

They go down to 25 degrees and then they'll go up to that's it. That's all they give. You adjust Minh trains. Now, if you got into the engineering settings in that control, excuse me I'm sure you can change the settings, but I'd advise you guys not to okay.

Another thing that I got in the on the flip. I'm sorry! Let me go back to the Chi wreck thing. One of the cool things too is they use the identical sensor as the Traulsen units. So if you stop the Traulsen sensors that work just fine on the Chi wreck, regions, okay, they do have a different part number but they're the same sensor.

So you can use them interchangeably, but you do not want to use a Traulsen controller on the Chi wreck unit because they are programmed a little bit different. Okay, just you know, contact iraq and talk to them. Okay, it's funny because when you call Chi RAC, you actually call Charleson first and then you have to hit the switchboard fork Iraq and then you talk to tech support. So now that I said tech support, I want to talk about technical support here for a minute.

I will lean on technical support whenever I have questions okay, I there's a lot of feedback back and forth inside the inside the the chat and the questions and different things about people saying that they don't use tech support. They've never used tech support all that good stuff. Okay, I don't know that that sorry, I'm just I'm looking at a chat, real, quick guys, starting at me, you guys can see right. You can see me for some reason in the on the video wasn't showing me there, so I want to make sure that I can be seen the channel yeah.

I could see myself alright cool, that's good, alright, so um, so I got a little distracted there. Real quick and let me change this. Let me turn that off today I got a little scared cuz. I look at my face myself, but we are going to do so, but it's work is always your senior service technician or your service manager.

You know first okay, in my opinion, because coming from my perspective, I'm a business owner and my position in the company I co-own the company with my dad. My position is, is I handle the field? I handle the service when I find out that my technicians are struggling on something and they've been on something for hours and hours, and you know that that's frustrating. So I really appreciate - and I know your service managers appreciate to that - you guys communicate with them. Ok, I'm not saying don't call technical support, but I'm saying you always want to let your service manager know you know hey.

This is what's going on, I'm going to go ahead and give tech support a call, and just just so that they know you're having a hard time. Ok, I suggest that, because I would appreciate that when people call okay so nothing wrong with technical support, guys, ok, but at the same time, if your service manager, your senior manager, another tech at your company can answer the question before you blow up service before you Blow up the tech support phone number, that's probably the best thing, because those tech support guys are getting a million calls a day and most of them are probably pretty silly calls you know. So you know I'd suggest you have all your ducks in a row when you do call them. Alright, I've told many stories about this before being hung out by text upon tech are being hung up by tech, support being hung up on by tech support, because I didn't know the answer to a question and different things, and while that was frustrating, and while that Guy was kind of a jerk at the same time, I get it because he's getting a million phone calls a day.

Ok, but there's nothing be ashamed to call technical support. What I usually call technical support on is, when I'm doing a warranty repair, because I like to keep them in the loop I like to get their advice when I'm doing warranty repairs because as a business owner, if you guys don't have to deal with that, warranty Repairs, kick you in the butt, so you usually don't get paid very well. So you want to follow everything to a tee and that's why I usually call tech, support and say: hey I'm doing this. I found this so you guys cool doing this and usually they're like yeah go ahead, but I just like it because they always put notes in their computers.

Okay, the other cool thing about technical support is, if you call them with models and serial numbers, usually depending on the manufacturer, they have notes in the system about the previous repairs. So if you have questions about how the units working - you can say, hey, you know what are the one of the previous repairs on this thing. What did they do? You know and that can give you some guidance if you're trying to troubleshoot a really difficult problem. Ok, so there's nothing wrong with calling tech support, but I suggest you lean on your service manager or your senior manager, whoever at your company first and then give tech support a call.

Ok, Kai rack does have a really really good technical support department. The guy that I always get his name is Robert he's, a really really nice guy very informative, but I usually don't you know, call him with silly questions. I call him with with real questions like today. I called to pick his brain before I did this.

This stream to make sure that what I was about to say was correct, because I had assumptions on how the Box worked, but I just wanted to run a few things by you know and he confirmed yeah. This is how this works, and you know so. You know I called with a real question and he got even got right to the point and didn't sit there and dance around ok. So I think that's always a great idea.

I'm gon na go to the chat for a few minutes and then I'll come back and talk about a few more things too. Ok, so let me go back up here to the Nasus broht cysts. I don't know if I pronounced your name right, but you said how do we do a proper leak test with a leak detector? Should we have a certain refrigerant pressure? Okay, so I kind of referenced this, and actually I'm glad you brought that question up, because I did get some questions about this. Ok, so, first off, if you're doing a leak check on a system, you want to make sure that you have pressure in all sides of the system, especially the ones that your leak checking and what I mean is.

Let's say: I'm working on my custom. Cooks drawers that I released on Friday, ok - and I mentioned in that video - that before I did the leak test, what I did was I made sure that the thermostat was calling ok once the thermostat was calling. I went onto the roof shut off the condensing unit, then equalized my gauges out. Ok.

By doing that, what I did was. I took the high pressure from the high side and bled it into the low side. So I brought the pressure of the low side even higher than it was at, because that it was probably running at like 30 40 psi because it was 404, Hey, okay, so that was you know somewhere in the range of where it should have been. So, by taking the high side pressure and bleeding it into the low side, then I equalized out my gauges and I was able to do a leak test on the system without having to add nitrogen or anything, and I had pressure on both sides of the system.

There's nothing worse for me as a manager, you know person that people are calling for Tet for help, then to ask questions and find out a half an hour later from a tech that says yeah I was leak, checking the system. Everything was good and then I asked him so was the system calling before you leak checked it well, no, it was pumped down. Well then, if you were leaked, checking the low side of the system and it's pumped down what is that doing? Okay? So, let's go to this: let's talk about pump down, so we've got a compressor. That's running we're talking about a refrigeration system with the receiver sight glass at TXV and ass Illinois valve downstairs.

Okay, so thus Illinois valve will energize whenever the system calls for cooling. Okay. So the box temperature gets high enough. The temperature controller turns on the solenoid valve the solenoid valve opens.

Let's pressure run through the system runs all the way up to the compressor brings the low side pressure up high enough that the low pressure control turns the system on in the system runs. Okay. Now the box will run and run and run until the box temperature comes down. Then that thermostat is going to say: hey it's cold enough in here turn off that liquid line solenoid valve so it'll turn off the liquid line.

Solenoid valve, then all the sudden. No more refrigerant will pass through that liquid line solenoid valve, but the compressor will continue to run and run so as it's doing so. The suction pressure inside the compressor is going to get lower and lower and lower, because no refrigerant is being let through that liquid line solenoid valve. So eventually it's going to get low enough that the compressor is going to shut off on low pressure.

So that means that the low pressure safety control sees that the pressure is at, let's just say, 5 psi, and it says: ok, I'm going to turn off now. Well, what happens if we go to do a leak test on that system when the pressures at 5 psi? Unless it's a giant leak, we might not find it okay. So that's why it's important to shut off the system equalize out the pressures then do a leak test. Another really important thing to think about is when you're working on freezers or even some coolers, sometimes the power from the roof might energize our de-energize.

Thus Illinois valve downstairs, so if you shut off the power on the roof and still equalize out your gauges depending on where they're located you just, you may not put pressure into the right area of the low-side. So you need to understand what you're working on okay. I hate to say this and I don't want to offend anybody, but you really shouldn't be working on these systems. If you don't understand the sequence of operation, okay, you really shouldn't be going into it.

You really should understand the sequence of operation before you start diagnosing. Charlie check, okay, that is a really really good thing to learn, because there's nothing worse than you spend hours working on the box to find out that it was just because you didn't know, okay, so yes, this is a great thing again, but I can have to Understand how the system operates. If you understand the sequence of operation, then you know that that's Illinois valve is going to be closed when it's in the off cycle or when it's in pump down mode. Okay, so keep that in mind another thing to keep in mind: there's some funky systems out there.

I do with most likes light commercial and restaurant stuff, but there's some systems where the solenoids operate in Reverse okay. So you need to understand what you're working on all right, nothing worse than that okay gon na go back up here: okay, you're, getting crazy feedback! Hmm you guys still getting feedback right now! That's interesting! I don't think there's anything going on. Can you guys hear me? Okay, right now was their feedback for a minute. I wan na make sure before I go off talking forever.

Yes, I do own my own company, oh yeah, yeah yeah. Yes, I do okay yeah. There might be something that I need to change or something like that. Guys, okay, so I'm gon na keep one going here.

Hopefully you guys can hear these okay, let's keep going up into here and I'm gon na go answer some questions here guys. So let me go back up into here. I shouldn't be getting any audio feedback guys. I don't have any audio feedback there.

You guys still getting feedback. Hmm. How about that? Can you guys hear me right now? Okay, it's gone now. Hmm! That's interesting! Okay! Yeah! I didn't do anything, but maybe there's something wrong with my stream or something okay yeah.

There is no FX knob on my mixer, it's a it's a very complicated mixer road, caster mixer, so very, very complicated, but okay. So I'm gon na go back up into here. Real quick. It seems like these streams, always have a problem where we always have something going on here.

Okay, let me go back up into here and see what else I'm missing if I missed okay cool, if I missed any any more questions, guys, let's throw them down into the chat again, so we can hear some more okay, okay, yeah! I apologize about that I'll! Try to figure that out so Matt Cassano, you said. Have I seen a clogged condenser? Oh yeah. Now? What do you mean by clogged like dirty or restricted condenser? I have never physically seen a restricted condenser myself. I've seen restricted capillary tubes and I've had oil logged condensers, but I've never had a restricted condenser.

So, okay, okay, I'm gon na keep going back up into here. All right, yes, Sacramento! Yes, I have worked on cool tech, refrigeration out of Pomona. It's been a while, since I've worked on their stuff, I've only worked on the refrigeration racks. I've never worked on their regions so, but I have worked on those Sacramento.

I have a question for you. Can you email me at HVAC our videos at gmail.com? I want to ask you about something with cool tech. I've always had a curious question about them, so I want to know, what's up so send me an email I'd like to talk to you about that so yeah restricted Mike okay yeah. I should call tech support on audio equipment, yeah for sure all right yeah.

So if anybody else has any more questions, let's throw them down into the chat here and let's go. I might have to throw this road road caster Pro mixer away, our Road probe, mech or whatever I got. I got one, these Road caster things and it's been. I actually already just send it back once so: okay, okay, so field piece s: men, 460 versus the Yellow Jacket.

Titan for pros. I haven't used the Titan force, I'm a field piece fan so yeah. It probably wouldn't be the right person to ask you may want to lean on HBC shop stalks. His axe worked with both of those, so he may have a better opinion on those, or maybe some guys here in the chat could have an opinion on how the titans work so okay, Frank Campbell.

What is the tall tool? Looking thing? Okay, with the gauge off the top all right so hold on, I'm gon na lean back and grab it. This guy right here is old school. This is how we used to. Actually, I never use this, so I shouldn't say we: this is how they used to dial in a charge.

It's called a dial a charge. Okay, so you would fill the the refrigerant and the liquid refrigerant. You would be able to tell how much refrigerant this was before scales were we're very accurate and you could use these to dial in the very, very small minor charges. Okay, there's some guys in here that may have used them and they could probably enlighten you a little bit more, but I like to collect old tools so yeah.

This is an old dial at charge so way before my time, this one's pretty cool too. This is an old-school, hermetic, compressor analyzer, if you guys have never used one of these before this is one of the original auntie's that you could use. So essentially, it has multiple capacitors inside of it and you could test starting test a compressor basically by simulating new starting components. So if you thought you had a bad compressor or possibly bad starting components, you could start it with this.

First. We still have these today, but this is just an old one, one of the old guy one of the guys that used to work for me, his dad had picked it up at a garage sale and he gave it to me because he knew I liked these Old tools - yeah they had those dial a charge, is definitely our old school. So do I ever work on industrial humidifiers? No, I do not. I have never worked on a humidifier.

We really don't have the need for humidifiers here in Southern California, because we have very dry air, so never had the need for that. You know another thing: let me grab another one hold on so this was my Annie that I use this was my hermetic analyzer. You open this up. This is the one that I came up using so basically, instead of throwing on a three in one to test to see if the compressor still works, we would use this analyzer the cool thing about this was you could test the you know? It has a ohm meter on it, so you can test continuity to ground.

You can test the windings and different things. So this was a like. I said this was the one that I used to use. I have no need for him anymore, because our our our meters, you know we can have like the field, peace meters and they have a really good capacitor tester on, and you know we can test the relays really easily.

So there still need Dave. If he's still in here has one you have, how what do you call yours Dave he's got his little compressor, starter or whatever that he manually starts the compressors with I like yours. I wish I can come up on one of those that'd be a pretty cool one, just to have so yeah. That is one of the old Annie's tech, total tech yeah.

The I believe it is made by thermal engineering. Yeah I'll have to look at it later. So, okay, so let's, let's see if I have any more questions here and we'll see a multimeter what kind and what type so again, I'm a field piece fan. So I have in my tool bag the field piece, SC 660, which is their clamp meter that has every single function in the world on it.

What I really really like the 664 is, it has a phase rotation on it. So when you're doing startup, a lot of our equipment has three phase scroll compressors now and before we would constantly start them up and then and then test. You know listen to the sound look at the gauge pressures, that kind of stuff to see if it was going in the right direction. Well, the cool thing about the SC 660 is, is you can do phase rotation and basically you test all three legs and it tells you if you have it wired in a ABC sequence or a one, two three C, so you know that it's correct.

So I really like the field piece: SC. 660. That's a really cool meter, plus it does everything else that you ever need it to do. It's a little bit big, but it fits in my Vito Pro pack, just fine.

So if you're using a small small little bag yeah, the SC 660 is probably a little too big to be carrying with you, but I think it's still a good meter to have in your truck so okay yeah the start cord. That's right! Yeah total tech that dave has yeah, it's all good. How do I go about changing, reversing valves, Paul dieter? You asked cut them out as best as possible. You know that reversing valves are never easy for anybody, so I try to cut them out and then you know then unbrace little sections at a time.

If you can there's really no sweet way to do it. If you're working on a resi system, you're - probably a little bit lucky because you can usually pull the condenser and you know - work without the condenser there, but on package units it's a little bit harder, especially if you're working on water source, heat pumps. Those are a nightmare because they're, usually in an attic and there's no access to them. I don't do any water source heat pump work anymore, but I used to do a lot of hospital work and it seemed like the installers never even thought about someone who had to work on those units.

So I couldn't imagine changing a reversing valve on a water source heat pump, so John Carter, you can't get a job making more than $ 12. Why been in the field for four years? Well, John. First off you need to look at yourself, no offense! I don't know if there's something about you, that's not warranting you to make more money. Are you not growing? Are you not excelling? Are you not learning? If it's not you, then you need to move on to a different company, but I don't know what area you're in you know.

Southern California. Apprentices will start at fifteen to eighteen an hour somewhere in there, but you know it all depends. It all depends, and it depends on you and how much you're excelling, but again it could always be the company too, so it might be better to move on to a different company if you're not gon na grow any further. It also depends the market you're in you know you get into commercial refrigeration light commercial stuff.

Like I do. You know you can start making a lot more money, so it just depends, but you have to have the skills and you have to be able to move and work in the Empire. You know HVAC is is difficult, especially when you get into refrigeration. So, okay keep going down here.

Yeah Brian, the the SC 660, is totally worth a dude, very, very good meter and I actually have had it for quite a while and then I just dropped mine and it broke the clamp and I took it into field piece and they totally hooked me up And replaced it no sweat so, and it was my bad too, but they replaced it okay, what's the best way, you can practice the trade RJ you're in the engineering department, in a hotel and currently going to school for HVAC. Should you practice in the hotel, while you're in or join okay, so I mean Reed, obviously lots and lots of books. I would suggest I mean if you have the ability to shadow someone in the hotel that you're working in and then do so. I mean, if you do not have someone to learn from then I don't suggest you start twisting and pushing buttons, because you could break things depending on the kind of equipment you guys have at the hotel.

So I would highly suggest that you shadow someone or get a job with someone where you can do a proper apprenticeship and learn. You know and work with someone, and you know ideally I'd like to see someone ride with someone for a year at a minimum I mean, I sure, I'd like to see them longer, but as a business owner, it's kind of difficult these days to be paying people. So much to ride you know to have a proper apprenticeship for three years. That's like almost impossible, so you know at least a year six months at the minimum.

You know you need to ride with someone at learn, but and then understand that you know you're not going to know everything when, after the six months or years up, you're gon na need to still continue to learn. So, okay keep going thanks. So much Scott PI chick. I sorry guys if I butcher your names here so alright, ooh, okay, prime time, one of your clients, his boy, took an ice pick to the evap coil.

Today, yeah it didn't end well for the coil or the boy. He did it because the coil was iced over yeah. I have had that. I had a manager one time that let's say he was a little bit on the cheaper side and he did not want to call us and he thought he could defrost the coil himself with a steak knife and he was chipping the ice away.

And there was three holes in the evaporator coil, where you could see nice steak knives. So, needless to say, that was an overtime emergency, evaporator, coil replacement, and the facilities department at that particular restaurant chain was not too happy that they had to spend $ 8,000 or whatever. It was a lot of money. I know it was that was like 10 years ago, though, but they had to spend a lot of money to change an evaporating coal on the quick, because someone decided they wanted to defrost it themselves.

So not a fun thing. You know I try to tell people even when they're working with me, man, don't ever take anything to an evaporator, coil other than water or heat, to try to defrost it because you're just gon na cause a problem. So alright keep going down here. Seeing what I'm missing sorry about that pie? Sick, ok, cool right on yeah, Gary black, I use the oxy acetylene torch, never had a bee tank to be honest with you they're too loud, and they drive me nuts, so oxy-acetylene all day long.

You know, but I guess you know, that's just a personal preference. You know I've. I see the the convenience of a bee tank because, especially if you having to climb up onto an attic, if you have that turbo torch tip and you don't have to have an oxygen tank up there with you, that's that's pretty cool. So you know climbing into weird places I can see a bee tank being very convenient, so Freddie, neither Neves its HVAC, our videos at gmail.com.

Anybody have any questions. You just look in the show notes of the video, the main page and it'll. It also have my email and it's everywhere so I'll put it in here right now: gmail.com there you go, anybody can send me email questions, anything like that. Ok, how about setting on it? Oh, what's the settings at Gary send me an email I'd rather not throw that in the chat, that's kind of one of the DIY things that I don't want to disclose for safety reasons.

I don't want to tell someone what they should set their settings at, because I don't want anybody to get hurt and then try to say it was me that taught them how to do that. So what I will tell you is is that when you have a torch tip on an oxy-acetylene, it usually tells you in the the documentation on the torch tip. So, if you're, using a number two tip, which is typically what I run on my oxy-acetylene rig, the package that you buy with the number 2 tip tells you what to set the pressures at for that tip so yeah. I just don't want to leave that into a video here.

You know, but I would say you can send me an email. We could talk about it. A little bit more Coleman. A Gro would be good to talk about.

I don't know what you're saying there did you say switch clarify that for me Joel. So that way I can understand. Would I use the turbo turbo torch? I would try it Paul. I guess I wouldn't hurt.

I would give it a shot. What can you do to cover your butt? Is it Xander, I'm assuming that your name Xander Clements, you said you got an ice machine when you arrived is making ice and it's working fine. I watched it for eight cycles. You check pressures amp drawers check the order of operations.

What can you do to cover your butt? Really simple: do a production test on that ice machine? You do a production test. You find out how much ice the ice machine is supposed to produce, and then you prove that by measuring the amount of ice that it's producing at the moment. That is your best way, so you know and then once you do a production test. That'll answer a lot of your questions.

To tell you if the refrigeration systems working, you know, do some troubleshooting think about it. Are they complaining only at nighttime when it's cold outside that, it's not working? Is it ever off on a safety limit that they're resetting? I don't know what brand you're working on you know. It could be a refrigerant problem where the headmaster goes to bypass at nighttime and there's not enough refrigerant to properly flood the condenser, and then it start the evaporator coil. So that could be a low charge issue.

It could be an intermittent hot water mixing valve inside the building that is, is bypassing and you'll tend to see. Hot water mixing valves become a problem at nighttime when nobody's using any building water, because the ice machine is still running even though nobody's in the building. So then, all the sudden, the ice machine will get hot water going to it and then it'll go off on a safety or have low production because it's got hot water. But then, when you get there in the morning you know the the the whole buildings running there, flushing toilets there washing dishes and all that stuff.

So then the hot water goes to everything else, but the ice machine. So that's an interesting problem that you can run into is a bad mixing valve. The best thing you can do to diagnose a mixing valve - that's bad is is be the first person to walk in the building find out when they're gon na be there walk to the the hand-washing sink, usually closest to the ice machine and turn it on cold Water and stick your hand under it if it doesn't have a manual mixing valve underneath the sink. A lot of the old restaurants used to have a common mixing valve that went to multiple sinks, so you grab that sink closest to the ice machine turn on the cold water and stick your hand under it.

If it's, you know really really hot water coming out the cold water faucet and then all the sudden after a minute or two it gets cold. Then that's an indication of a bad mixing valve somewhere in the building that can cause intermittent ice machine problems. So I don't know, if that's your case, that's just one of those things that popped in my head right now. So, okay, Chris Lopez, can I explain how to do a triple evacuation? So there's a lot of controversy about triple evacuations right now and the triple evacuation is using the concept of vacuuming down to a certain level purging with what we used to call dry, nitrogen, then vacuuming down again then purging with dry, nitrogen again and then vacuuming down Again: well, it's since been kind of debunked the whole triple evac thing and a triple evacuation isn't necessarily very useful.

Okay, we basically can use a proper evacuation rig and a micron gauge, and we can do everything that a triple evac was going to do. Okay, so if you properly dehydrate the system vacuum it down, the triple evac really doesn't do a whole lot. Now I don't want to get into arguments about that. It's just my understanding of how things work.

I am NOT the sergeant of the vacuum police. Okay, so don't quote me on that stuff, but yeah the triple evac, really isn't your best bet? Okay! Now it's one thing: if you are trying to push like a lot of moisture out of a system, I can understand a nitrogen purge doing that, but for the purposes of a triple evac, I don't really know if that's really going to do a whole lot about That what I would suggest you do is, I send me an email, hvac, our videos at gmail.com, and I will get you in touch with the proper people that can give you some more information about doing a proper evacuation and in fact I will go ahead and Disclose that I am gon na be working with some new vacuum tools that have come out hopefully soon and I will do some videos on proper evacuations and you know we'll work on that. Okay, but it's gon na be a little while we've got some interesting videos coming up too so, okay, let me keep going back up into here guys if I'm missing comments, there's so many now that I'm not gon na go all the way back to the beginning. So you guys need to throw them back in here.

Scott! Thank you! So very much dude. I really appreciate it and that really does help a lot so much appreciate it. Okay, yeah Gary black! I'm glad you pointed out that I really enjoy enjoying the m12 fuel. Little drill driver and I'm probably gon na, get it end up getting one of their little impacts, because I've heard they've got some pretty cool impacts too.

I'm not a fan of the impact for taking screws off and stuff, but there is a purpose for it. So we'll definitely do that Andrew. Thank you so very much dude, okay going to go back up into here again guys. If I missed your comments, please throw them down into the bottom and I'll answer your questions as best as possible.

So, okay yeah prime time that mom-and-pop restaurant, where I had to run a new line set that wasn't a pain in the butt and it was even worse because it's kind of a it's, not a family friend. But it's a business acquaintance that we've had for a very very long time. It's one of my dad's good friends. As far as business goes so you know, we tried to help the guy out as much as possible, but still that cost him an arm and a leg, but he's a small mom-and-pop and yeah.

That was a that was a nightmare of a service call. If you guys don't know what we're talking about we're talking about the video we're good gosh, it was a long time ago, where I had to run a new line set, went there to change a coil then found the line set with leak and underground. We ended up changing like a couple coils and multiple line sets. We had to run him down into the building.

It was not the prettiest work in the world, but you know we were trying to help the customer out, so we tried to keep it as low cost as possible to try to help the guy out. So that was a disaster job. Okay, keep going back up in here, Gordon! Thank you, so very much man. I really appreciate you watching.

Okay, yeah, that's the one! I'm talking about Gary the m12 for speed impact yeah that that's really interesting. I definitely want to check that out so and hopefully I will have some Milwaukee giveaways coming soon guys, so hopefully I'll be able to come up with some stuff that we can do a giveaway on. So I'm working on that one right now: okay, so our RS King sg-1, how does my company going about doing preventative maintenance? Well, it all depends on the customer. So I do restaurant refrigeration and it all depends on what the customer wants to do.

As far as the preventative maintenance goes okay, so in a perfect world, I want to do a preventative maintenance at a restaurant every month, and I want to focus on a different thing. Every month. Typically, don't want to change the air filters unless they're absolutely needed every month. I usually like to do every three months I'll put in pleated filters.

They last a lot longer and then that way I can focus. My preventative maintenance is in a perfect world. If I have my say in it are going to last four to six hours per location and we just go through the equipment. You know with a fine-tooth comb and we try to maintain it once you get equipment into good shape.

It's it's fairly easy to maintain. I'm going to be honest with you most of my customers: don't do a monthly preventative maintenance. I only have one of them that does a really good monthly maintenance. So and it's a very big restaurant, so it's it's! It's almost not enough! You almost need to do to mean it's as a month to keep up with the amount of stuff that they have going on so but yeah we like to go through the equipment, and you like to it's.

In my opinion, it's best if you can have the same service technician going to the same restaurant every month, because then he starts to notice a trend when he starts to hear weird noises and different things. I think that, and I will go off on a high horse here - real quick and start talking, and I mentioned it in one of my videos. I don't know if I really said video yet, but I have a problem with headphones when you're working, okay, I feel that you shouldn't be wearing headphones. I feel that you should be paying attention to the job.

Okay, personal opinion. I know some of you wear headphones. Listen to podcasts and whatever okay, but I feel that when you're doing a preventative maintenance, even though it could be mundane and boring that you need to be vigilant and listening to everything, because that's how you diagnose and find work for yourself later when you're there doing. The preventative maintenance and you can hear a condenser fan motor across the roof going bad.

You bring that up to them. You save yourself a call back out to that restaurant or you're already there. Maybe you could do at that time. Maybe you can't, but also it's a safety thing wearing headphones.

In my opinion, okay, you know you can't hear things behind you. If someone comes up behind, you is trying to get your attention because there's a fire or whatever you know and headphones, they limit the ability to be able to hear things. Okay, so sorry went off on a tangent there, but okay, then I go into here and see what else is going on what else I'm missing yeah. I have the field piece, Wireless scale, it's really cool and let me show you guys something else to hold on.

So I have talked to you guys about the new s man that's coming out, and this is field pieces, new s, man, I've showed it in my videos. This is just a packaging there. They sent it out the cool thing about this new s, man, one of the interesting things is, and that's you know manifolds not for everybody, but the cool thing about this is it has the ability to connect to the wireless JobLink system, and it also has the Ability to connect to their wireless scale and have the readings displayed on the manifold. So you can actually see what's going on with the wireless scale, pounds and ounces as you're charging, and you don't have to look down at your scale or your phone or whatever.

So one cool thing I like about or one of the many cool things I like about the new field, these manifold, so okay, keep going into here, heck yeah. I would expect trainees to read schematics while they're in school. They need to learn, you know for sure, and I think that, as an apprentice, your job doesn't end. When you clock out, I think that it's your responsibility to go home and take down models and serial numbers while you're on the roof and do research.

When you go home print out, schematics, pronounced sequence of operation. Do that kind of stuff and learn? You know you're not gon na you're, just gon na excel that much faster if you, if you take the time after work and read that stuff. So yes, I hear, I see Brian Milburn Sam get the book commercial refrigeration for air conditioning technician, technicians by dick words. It is a great great book hold on.

I need to have everything with an arm's-length. This is the book commercial refrigeration for air-conditioning technicians by dick whirs great book. Dick Wars is a very, very nice guy he's a former business owner, started teaching and then started writing books he's a great great guy, very good wealth of knowledge. This book has some great review questions in it and it just goes about teaching you an interesting way.

The interesting thing about this book is that it was written for an air conditioning technician that wanted to learn refrigeration, but in my opinion, it honestly covers enough to learn even just basic refrigeration and basic air conditioning it. It really covers a lot, so I'd say four and again, I'm gon na go off on a tangent. If you can start as an apprentice, if you can start thinking about things differently, when you're look when you're talking about pressures and what your your pressure should be in a system, don't really be so concerned about pressures and, let's be more concerned about temperatures, look at Saturation temperatures and stop referring to pressures and start referring to saturation temperatures. It really does help you to understand things, even when I'm on the phone with people and I'm talking to them, and they call me and say hey.

My pressures seem fine they're at this, and this and I say: okay, but what is your saturation temperatures? What's your vapor Sat and what's your liquid set and they say oh yeah, my vapor SATs at 19 degrees well, you're working on an air conditioning system and your vapor SATs at 19 degrees. Do you really think that's right? Do you really think that your evaporator should be at 19 degrees? What's your building temperature? What's your return air? What's your wet bulb, you know. If you start to understand saturation temperatures, it starts to make a lot more sense. So if you're working on an air conditioner - and you have a saturation temperature below 32, we need to start thinking about something right, because your air conditioning coils should not be getting below 32 because that's when frost starts to accumulate right and air conditioning typically don't have Defrost systems built into them now in refrigeration.

It's totally expected to see your saturation temperature get below 32 degrees, but on an air conditioner, it's not so it's that kind of stuff. If you can look at saturation temperatures, you guys are going to excel a lot faster. So, Oh, okay, what else Paul dieter, I'm gon na, be honest with you dude! You couldn't throw a hill more manifold at me for free. I wouldn't take it so no offense to Hill Moore I've never used one! I've just read too many bad reviews about him.

So I won't do it Chris Lopez, you ask probably one of the biggest questions in here. How important is a well understanding of psychometrics. Psychometrics is one of the hardest things to grasp in this trade, and I'm gon na be honest with you most people don't fully grasp it, the entire lifespan of the trade. I understand Psycho metrics, but I am NOT an expert in sacrament ryx, but psychometrics explains everything.

If you can understand and grasp the concept of psychometrics you're gon na understand everything, it just totally makes sense when you understand the properties of air. When you understand what happens when you add heat to air, when you understand what happens when you remove heat from air, you know everything. It totally makes more sense to everything. I suggest that anybody take as many psychometrics classes as you can.

Every time I take a psychometrics class, I still learn something else. You know it's one of those things. You're, never gon na. Learn it all, but you just got to keep doing in psychometrics.

It can be a difficult thing to understand, so you know just keep taking them. You're gon na pick up a little bit every single time. I recently just took another psychometrics class. We did an our SCS training class at my local chapter here in Southern California.

The arrowhead chapter and we had Eugene silverstein the author of many many books. He worked for the ESCO company, he he wrote the reto. He was a co-author of the RAC manual, he's written tons of educational books and he did a psychometrics class with us and it was very interesting now. I also did a psychometrics class, I think of his name with another alpha that I'm not gon na try to butcher, because I'm totally forgetting his name right now, but we did another psychometrics class with another guy from our SES and it was a great class.

So, as many as you can take, you know you're gon na learn so much better. So, ok, where can you find that book Joel? You can find it on Amazon. I hope that Amazon is the right place to get that book. You know a lot of times.

Amazon hurts people and there's usually better places to get it besides, Amazon, but I do know that they sell it on Amazon, but it's published by a company called sin: gage CEng a GE. I believe if you look ups, engage and then look up the book you'll find out what the best places are to buy that book. You may even be able to buy it direct from cengage.