This is the HVACR Videos Q and A livestream originally aired 11/18/19 @ 5:PM (west coast time) where I discuss my most recent uploads and answer questions from emails and the chat.
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12523 LIMONITE AVE.
#440 - 184
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Intro Music : Pilots Of Stone by Audionautix is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...)
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It's time to chill get ready for a mediocre. Qa live stream if you're old enough grab yourself your favorite adult beverage and if you're not stick with apple juice, put your feet up and relax. If you have any questions feel free to ask them in the chat and now, let's queue up the intro music hello had to turn my microphone on. I almost forgot there.
I almost pulled the Zack, but I didn't so. That was the important part right now. I'm just messing with you Zack. Hopefully you guys are doing well, I see everybody in the chat.
What's up guys, I know a bunch of people are saying hey. I don't know why that dang Knight bought, I can't figure it out. It keeps posting. The movie quotes way too early, but I'd be kind of curious nightbot Nathaniel is giving movie quotes.
I always put a movie quote in the chat for people to guess to see if they can figure out what movie it's from. So let's see this is a pretty obscure movie and I'm sure you guys could google it. But let's see if anybody guesses it so yeah, hey everybody! I see. Uh you've got quite a few people in here already so cool um got a couple things as usual.
We want to talk about first thing I want to start off with and I'll definitely address the stuff in the chat. Okay, as usual guys, please put your questions from the chat in caps lock. If I fail to answer your question, throw it in there again: okay, I'm not ignoring your question. I usually will tell you hey.
You know what I can't answer that one right now, if it's something that I can't answer so if I haven't acknowledged it, go ahead and keep putting it in there, okay and I'll definitely try to get to it. So so what I have sorry, I lost my train of thought. There anyways don't know if you guys happen to catch it, but uh I was on the the overtime show. We got a bunch of the overtime guys that are always in this chat.
Right now Joe HVAC, our North, is in here they do that show Friday nights, Joe refresh, my memory are just and what time it is, it's either 5 or 6 p.m. on Friday nights on Zach's channel. For some reason, that's escaping my mind right now, but you guys definitely should check that out. I was on there this last Friday and a little bit too much to drink, but it's all good, you know, so what I wanted to start off talking about really simple phrase.
I use it all the time, guys big-picture diagnosis, okay, I've probably drilled it down your guys's throat, so you guys are probably sick of it, but I'm telling you big-picture diagnosis is the way to go about it. It definitely helps to make sure that we diagnose these problems and we diagnose them correctly. Okay, when we are working on our equipment, it's so imperative. Okay, I've given so many examples of taking a step back and looking at the big picture, and I'm gon na give you guys a little bit of an example right now.
Okay, we get a service call on a walk-in cooler, and this is gon na be an easy one. I've had this topic a lot lately, but I'm just gon na kind of give you guys some some information. Okay, so we'll get a service call on a walk-in cooler by the time we get out there. You know we are the units down to temp, it's working, fine, okay, and I know some of you are already guessing where I'm going, but I'm just trying to elaborate this point. Okay, so we get out there, the walk-in box is working. For me. The manager swears up and down it wasn't working this morning. Okay, we don't just walk away from that problem.
Big-Picture diagnosis, the first thing we should be doing when we walk in the door that restaurant or building or whatever is asking questions asking those questions being thorough. Okay, um, it really helps you and and if it makes it easier the moment I walk in the door, I go find the manager, I shake their hands bump their fist. Whatever say, hey ask them how they're doing ask them how business is going and then I asked him about the problem and then when they tell me about the problem I say hey. This is something I always ask.
Is there a certain time of day that this happens? Does it happen? Often is this time you know and they would almost anything okay just because it was working when you were there, you don't stop okay, you keep powering through it and you start rationalizing in your head. You start listening to what the manager said in my situation the example I'm giving right now the manager told me hey, you know what the box was making this weird sound from the evaporator. Coil is hissing at me and when you no, but he goes, I really didn't think too much of it. You know, but all that information goes into my head and helps me to diagnose the problem.
So the problem that I'm describing is a low refrigerant charge in the wintertime okay on a walk-in cooler and the head pressure control valve the head pressure control valve yeah, I'm sorry! If the mics cutting out! I don't know what the oh well address that right now. So the head pressure control valve is trying to flood the condenser when there's not enough frig run in the system and in that situation, that problem will really only show itself when it's really cold outside when it's warm outside the box will work so big-picture diagnosis, asking All the questions, thinking about everything and going through it, then you can diagnose those kind of issues. Okay, so it's so important to ask questions and be thorough with everything yeah. I don't know why the mic was distorted, guys, that's a little weird but yeah.
I'm gon na fix it right now hold on. Let me see this: how about that nope? That's a little bit still distorted. Let me go back down a little bit more. That should be a little bit better move this away a little bit.
How about that? That is that should be getting better for some reason, I'm still showing some yeah sorry about that guys. Yeah! Let me see here, hopefully that's getting better. Is that getting a little bit better for you guys, hopefully, hopefully that'll be getting better there cuz, I'm noticing that it's doing a little bit better now, so I apologize about that all right there we go. Let's see if this gets any better there, okay cool right on sorry about that guys, yeah! I know you can't focus on anything else, so very important though so I hopefully you guys got the gist of what I was saying there: okay, so Ernesto the big change that is coming to the channel. It's actually not going to happen today. We had to postpone that change, so I'm gon na lead you guys on and tell you that that big change is very most likely going to come next week. So yeah we had some plans and the plans kind of fell through so we'll see how that goes. So, okay, you Brad Taylor.
You said that you are unable to find the rust box app. Is that app for Android? Only so rust box is actually not an app for your phone rest box is a computer program, so Google search for your computer rest box. I personally do not know of a a load calculation app for refrigeration for your phone at this time. Okay, but I'm not saying it won't, come out soon, it's possible, you could do the rest box app Scott Savage! Thank you very much I'll address that right now.
Okay, it's possible, you could do the rest box app on your phone because it actually is just an excel file. So it's possible that you can Google search rust box and just download Excel, and then you should be able to do it. Okay, hey Gil! Thank you very much man. I really appreciate it guys.
Okay, so let's do the r22 versus 404. I know I know, prime time I see you, it's you're sick of the headmaster, talk okay, so our 22 versus 404 a well. It really depends on what you're working on okay each gas has its benefits and its downsides all right, and actually both of the refrigerants are being replaced very quickly. Okay, so r22 is slowly being phased out.
R22 had higher discharge temperatures. Okay, so your compressors tend to get a little bit hotter with our 22 404, but we had lower operating pressures with our 22 404 a had lower discharge temperatures, but we had higher operating pressures. Okay, obviously r22 was not a blend, so sure we're gon na go with our 22 would be the better gas of all of them. But when you get into all the environmental environmentalist, hippie people they're gon na tell you that the r22 is bad for the ozone.
But also 404, I think, is arguably worse for the ozone, so I mean it's kind of a win between both I mean honestly. If I had to make a choice, I prefer our 22, but obviously our 22s prices are going up right now. Okay and as 404 is slowly being phased out, we've got new replacement refrigerants our 448. A is the one that I've been using as my 404, a replacement for medium temp and low temp, and it's a good gas there's some a little bit of a learning curve. Okay, because it has a glide for for a had a very, very minimal, not even almost really noticeable glide. So you know I mean it really depends on what you're working on r22 way back in the day was a great refrigerant, in that, when we were changing over from r12, we could still use the same compressors for the most part, and we could just change the Metering device and then you know, run with it. You know you weren't supposed to, but a lot of people did. You know I mean it's just one of those things you know, so it really just depends on what you're working on you know in your particular situation.
So alright, let's see what else, how do I feel about a tech moving into an office role? You know it really depends on what your situation is. I really don't like being in an office. It drives me nuts. I can't handle it so being in an office for me, is you know my worst nightmare? I work in my office about once or twice a week usually, and I'm in there doing.
You know just normal remedial work and I just feel like I don't accomplish anything, but you know whatever floats your boat, if you're happy being in an office, then I say: go for it because it'll definitely uh. I mean it'll work for you. You know what I'm saying I don't see, there's anything wrong now. I also believe that every service manager should have been a service tech before he can be became a service manager.
I do not believe that a service manager should have an office role and be commanding people and not know what they're actually doing out in the field, so some office work. I think you need to be a tech before you can work in the office. I think it's very important because your employees will respect you a lot more repr tech mark what would cause a transformer to trip without finding a rubbed out short there's. So many different things.
There could have been a something on the circuit, the 24 Volt or whatever. The transformers controlling there could have been anything on there that has an overcurrent that is shorted to ground. You could have all kinds of problems, so, let's see um sorry. I lost my train of thought there.
So um yeah, I mean it really could be anything mark. It just depends, you know it could be a short of course that you can't see at the moment it could be a component, a contactor, that's getting stuck, it could be all kinds of different things. This guy is kind of the limit on that one, but you can feel free to send me an email and we can talk more HVAC, our videos at gmail.com. So, let's see what else ice thickness probe was was cut well, splicing back together, work right, yeah! You should be fine, I mean I prefer you to go ahead and change the ice thickness probe, but I mean to get myself through a pan.
She, I would changed. I would splice it back together permanently, though no, I would probably change it, but I mean it depends on what type of ice machine I'm assuming you're talking about like a Manitowoc ice machine as long as it's not the microphone probe, then it should be fine. So that's what it was Justin I was like. Why did Joe get muted? I was all confused for a minute and I was like wait what happened? So that's all right. I kicked someone else out of the the stream the other night on Zack's and I didn't mean to so all right. Let's see did you start. Did I start a Roth IRA and my employees, you have some r22 for sale. I see what you're saying see.
R22. Isn't that very expensive here I think it's only four hundred four hundred fifty dollars a drum or something like that for a 30 pound drum. That's not that bad at all. So all right, I'm gon na, go to my topics here, real quick and cover a few things before I get to more of the chat.
So if I haven't answered your question feel free to post it again. Okay, I already covered that okay, HVAC apprenticed asked me how to identify condensing units when you don't know which ones which and he's referring to my video that I just posted where I had a walk-in cooler in a walk-in freezer, and I said I think this is The condensing unit, but they weren't labeled okay, now experience is really gon na help you to identify those properly, but we can even take that further. So let's talk about the different types of condensing units that we can have. We can also have multiplex systems.
So that means that you have four operators and different regions downstairs in the restaurant, and you have one condensing unit on the roof. But let's say that you've got five condensing units that all do different, evaporators. Okay. So let's get it even more confusing.
How do we go about diagnosing or finding which condensing unit controls? What okay? In a perfect world, you shut off the condensing unit for a day and you come back and see what's hot. Obviously, that's not going to work okay, so in that situation on a multiplex system, what I would do is, I would start turning off thermostats, because it's a pump down system, I would start going downstairs and turning off thermostats satisfying each evaporator coil and seeing which condensing Unit it turns off now when I see a condensing unit turn off. I then don't just assume it's that one. Then I go back down and turn one of them back on to make sure that it turns back on turn it off make sure it turns back off, because you can be led in a direction that you want to go if you own, don't double check.
Okay, now on a walk-in freezer and a walk-in cooler, there's a couple different things: you can look at the refrigerant. In my situation I had r22 and our 404 a it's very, very rare - that we use r22 for low temp gas. Okay, it did happen, but it was very rare, so that's a pretty dead giveaway. You can also look at the size of the condensing unit.
For the most part, low temp, condensing units are usually gon na be bigger than medium temps, but you also have to be careful, because maybe you have a ginormous walk-in cooler in a very small walk-in freezer. So, in that case your low temp condensing it may not be bigger. Okay, you can also take the compressor data and look it up, but you have to be careful about that because nowadays we take compressors and we repurpose them all the time, we'll put a extended medium temp on a low temp. So you got to be careful about that. You can also go look at your metering device or I'm sorry, no, that wouldn't work, but the other thing too is look at the defrost strategy. More than likely on a walk-in cooler is not gon na have electric defrost for the most part, okay, most of them won't unless it's a really rare case. So a walk-in cooler will probably have nothing hooked up to where you would have electric defrost. So if it's a standard, 80 145 20 defrost clock or a DT AV 40 defrost clock, you would have nothing hooked up to the number three terminal and you would have something hooked up to the number four terminal: okay, on the walk-in freezer time, clock typically you're Gon na have some sort of defrost termination.
Okay, so you'll usually have something hooked up to the X terminal. So there's a couple different methods to do it. What I suggest is is once you figure out: what is what mark it with a paint marker, okay, permanent markers are great. Sometimes I only have a permanent marker in my pocket, but permanent markers will fade in a couple weeks.
A paint marker will usually last for years and I usually mark it in a couple different spots. So that way we can remember okay. Hopefully that answers your question there, let's go ahead and get to the chat, okay, cool, guys, Ralph. On my last stream, I did some winners and we gave away.
I think it was six prizes to six different six different people and Ralph did get those shipped out all, but one there was one person and he'll get it shipped out tomorrow. So at least that was the last you told me Ralph. Maybe he got him all shipped out today, but regardless Ralph got those things shipped out, okay and then also, I think I emailed everybody from the overtime show. I got your guys's stuff all shipped out too.
So that should be popping out all right. Let's see what else we got in the chat going on here, black mist. Thank you very much man. Thank you guys, all the compliments.
I really do appreciate the people that throw compliments in the videos and on the chat and different things. I try to address some, but sometimes I miss them so, okay, so Texas HVAC our what is the best procedure to bring oil back down from a reach-in evaporator? That could be very difficult when you have logged evaporators. Okay, it's one of the most difficult things to get that oil out and I'm gon na be honest with you time. Okay is gon na, be one of the things often times on reaching coolers they're, not sized correctly for the proper refrigerant velocity to return oil. I have some really bad systems that have horrible horrible oil return and it's so bad that there's nothing. You can do okay, obviously putting proper pee traps in the right places, but in your situation, you're saying that the the oil stuck up high yeah, that's an interesting one. You may have to drain the oil out. It really depends.
I mean, unless you can, you know, increase refrigerant. Velocity, you're gon na have a hard time getting that oil back. That's a very difficult, difficult thing. So sometimes you know, depending on where the expansion valves that you can pull the expansion valve hat.
In my situation, I work on a lot of KY rec regions, the old multiplex systems, and they installed the expansion valves upside down. So the power heads are on the bottom. So in that situation we just pulled the power head off and let the oil drain out of the evaporator coil keep in mind, though you got to get that oil back to the compressor. So if you drain it out of the system, you're gon na need to make sure you add oil to the compressor.
So unfortunately I don't have a great great answer for your question. Texas hvac are, it is a very difficult one. I'd appreciate some more context. If you want to send me an email, the HVAC, our videos at gmail.com - and maybe we could talk a little bit more so what happens when the evaporator turns to an ice block? John curran? So when the evaporator turns into an ice block, the evaporator doesn't work anymore.
Okay, so we're still feeding liquid refrigerant through the expansion valve, it's still coming out as a liquid vapor mixture into the evaporator coil, and then what happens is if the evaporator is frozen up. We no longer have heat transfer on the evaporator, it's very little heat transfer. Okay, and what happens is the refrigerant starts to collect and it'll actually slug liquid, so we'll feed liquid back to the compressor and it actually causes issues so typically on a ISTEP evaporator. If it's a Randy running that way for a very long time, obviously your temperatures are gon na go up, but you're also going to potentially damage your compressor.
So you got to be very careful when you see iced up situations, you definitely want to take care of them. Obviously, if you have an ice step, evaporator you've got more than likely some sort of a defrost issue or a door being left open or a thermostat. Being bad, there's all kinds of different situations that can cause an iced up evaporator, but you definitely want to take care of it as soon as possible and you never want to try to adjust the refrigerant charge when you have a nice tub evaporator. Also, so all right, let's see what else we got.
I got no blood under my nose. This is dirty, so it's just dirty. I'm trying to catch up to Bill. I'm gon na I'm gon na grow a beard like Bill so because I want to be like Bill yeah. Definitely, Ernesto III definitely was a little bit. Intoxicated on the overtime show just drinking sparkling water today so got to keep my reputation on the up-and-up on the official videos Channel. So, okay Freddie. What happens if someone was to put the wrong cartridge inside the expansion valve? That's a really good question.
It's either gon na over feed her it's gon na under feed, depending on the cartridge. So I'm assuming that you mean a build, a valve okay or a spoilin, cue valve or a BQ valve in that situation. There's a cartridge mechanism that you put inside the expansion valve and that's essentially, what makes the tonnage that's what lets the refrigerant you know go through the expansion valve or it creates the restriction inside of it so yeah it's either overfeed or under feed. Depending on what you put in there now, you may be able to get away with it if it was a marginally sized valve as it is, you may be able to adjust the valve, but ideally you want to put the right cartridge back inside that valve.
For sure, so let me see what else we got going on. Let's see Christian you're asking if I can see your text. Yes, I can see your text. I didn't see your previous ones, though so don't know what you had asked me before.
But yes, I can see your text in the chat. If that's what you're asking me so, what's the best way to verify correct air flow on a package unit or how to determine rpm on a motor Lorenzo Lorenzo, okay, um, the best way to determine airflow on a package unit is to measure the airflow. At the registers down inside the building with a flow hood - okay, now that's not very practical because a lot of times it's very difficult to measure air flow, but a flow hood downstairs measuring the actual distributed air as it's passed already through. The ductwork is going to tell you a lot: okay, the next thing: how do you test rpm on a motor well to test rpm on a motor? What you're going to want to do is use a tachometer there's a couple different styles of tachometers, there's the style that you actually have to press up against the polio, the sheave, while it's spinning, there's also the newer style that uses a piece of reflective tape and What it does is, it actually counts the revolutions per minute or, however, you select it.
You can do all kinds of different selections, so yeah you can definitely do that with the RPM or I mean at a kilometer okay. So if you want to know the motors RPMs test it with the tachometer now, if you want to know the delivered rpms, that's a little bit more difficult, but you can test that with a tachometer too okay, I will say that the measure quick app does a Really really accurate estimation of air flow, so, if you haven't tried it I'd highly suggest it okay measure quick, is the next best thing to physically getting down there and measuring the distributed air flow with a flow hood. Okay flow hoods are very expensive. Most people don't have them, so I highly suggest you check that out measure quick, it's free on all the app stores, the biggest thing about measure. Quick. Is you need to understand how interpolate, what it's telling you and how to properly measure things? Okay, so, for instance, on a package unit, it's very very difficult to get readings without going down into the ductwork. Now, if you want to get the most accurate airflow estimation and the most accurate package unit performance measurements, okay, you want to measure the air temperature down. You know a ways away from the evaporator coil: okay, a ways away from the heat exchanger, unfortunately often times the only place to measure air temperatures and different things like that on a package unit is right on the side of it, which is typically inches away from The heat exchanger and you know probably about a foot away from the evaporator, so you're gon na get some skewed numbers there.
All right. So in a perfect world you get down below the roof deck. You drill some holes, you measure in the plenum, okay, a ways away from the evaporator and heat exchanger and then let measure quick do the math and you can do some calculations. You can also traverse your duct okay, traversing.
Your duct is going to be using an anemometer. Mmm actually have an anemometer back here hold on. So this is a field piece, Sta, anemometer, okay. It takes a measurement right here and this can actually measure the the airflow the speed of the air.
Basically - and you can change the unit's you - you traverse the duct, but the problem with an anemometer is you have to take estimated airflow air air measurement numbers? Okay? So if you have a plenum, you're gon na want to do many, many holes all equally spaced out and you're gon na want to take equal measurements and whatever it is so, no matter how wide the plenum is. There's actual kind of numbers that you want to use, but an anemometer is another method of measuring air flow. Now, with an anemometer, it's not necessarily going to tell you the CFM, even though this one will give you a CFM, because you have to input the ducts sizes. But that's what I'm trying to point out is that you have to use some calculations based off at the ducts sizes and the velocity of the air moving through that duct and you're gon na take an estimation so you're not just going to take one reading.
You're gon na take multiple readings and then you're gon na find an average of those multiple readings because oftentimes, if you've ever used an anemometer. If you haven't, I implore you try it out, because what you're gon na actually see is it's gon na kind of help? You understand how crappy air flow is inside of ductwork you'd. Imagine that a ductwork is square or even a round duck like the air is even all the way around, but it's not air is very turbulent, and so, when you measure, through with the anemometer you're gon na, see all kinds of different air readings as you move The probe around so it does help you to understand a little bit. So an anemometer is another method of doing an airflow measurement. But that's gon na be an estimation, because you're gon na take multiple readings. So hopefully I answered your question there for you. But again, if I don't answer your guys's questions enough, give me a more send me: an email, hvac, our videos at gmail.com. So, let's see see what we got going on here: okay, Christian you're, saying that you have seen heat pump, condenser for refrigeration, walking with low pressure control and a receiver yeah.
Okay. So I've seen a lot of people. Do this actually used to do work for a golf course that all their equipment had condensers on the roof? Now I don't know about heat pump condensers but like I guess it wouldn't hurt that's kind of weird yeah. I guess you can use a heat pump.
I don't know I would be using hot gas defrost like where they using the three-way valve. The reversing valve is a hot cast defrost. I have seen people take residential condensers, especially in the past, because the capacities were close enough and you could get your evaporator. There was enough room basically in the delivered capacity of the unit to run the equipment, so it is possible, it's kind of hacky, if you think about it, but I mean it's possible obviously, you'd have to add a receiver to it and some cylinders and some safety Controls, but it is, I mean it's, it's totally doable as long as the the unit can deliver the right capacity.
I mean you know, anything's possible. A compressor is a compressor right, so it really just depends on the amount of delivered BTUs that you can put out with that condensing unit. But again you know there's different ways. You could do it.
Let's talk about it. Well, we'll talk about that later Christian. So all right, let's see what else we got going on here. I definitely missed a whole bunch of stuff in here, though, so let me see okay, so, like you said, why does the reversing valve switch back over after pressure equalizes and then kicks back over? After start, the reverse valve never loses 24 volts.
That's a really interesting question. Ike, there's, obviously something going on in there. Excuse me, I don't know. What's going on in your situation, Ike's, Oh, send me an email.
We can talk about it a little bit more. Obviously it sounds like you got a problem there with the valve or you know, something's going on inside that valve all right. Let's see what else we got going on here, why do heat exchangers crack a lot really good question? John okay? So there's, let's just say, there's two methods of a crack heat exchanger to for a cracked heat exchanger. Okay, so I would say probably one of the number one reasons that heat exchangers crack is because of poor air flow. All right, so you got to remember that heat exchanger is gon na deliver the same amount of heat, no matter what the airflow is. If you have poor air flow through your ductwork, that heat exchanger is going to get hotter than it needs to, and it's gon na stress the metals. Ok, the hotter and hotter it gets the more. The metals are gon na get stressed and the more potential that you're gon na have problems with it cracking later, all right so I'd say probably the number one cause of bad heat exchangers, and it's it's just pure physics, if you think about it, is poor air Flow because if you don't have heat transfer across the heat exchanger, then it's gon na get too hot.
Now it's always possible to that. A heat exchanger doesn't get hot enough to trigger the limit, switch and shut the system down, but it also runs hot all the time I will say that there's probably 98 % - let's just say 95 % of our package units here in Southern California, whether they be. I mean even residential 95 % of our air conditioning systems. Out here have poor underperforming, ductwork.
Okay, we have leaking ducts, we have restricted ducts. We have all kinds of issues all right, there's, definitely a lack of information out there for people, I shouldn't say: there's a lack of information, but there's there's a lack of knowledge for sure of the people doing the work. That's are installing the equipment. Ok, oftentimes people take shortcuts and they just don't understand air flow and how to properly sized ductwork.
I'm not saying I'm an expert. I've just read a lot of books on it, but I certainly am NOT an expert on sizing ductwork, but I do know, there's a whole science to it and it's not just winging it. You don't size ductwork. You know by rule of thumb, you don't say if I have a 5,000 square-foot house delivering 2,000 see if we know with a 5 ton, delivering 2,000 CFM zaire, you know what size should my ductwork be well, it really depends on what you need to lever to Each room doing a proper load calculation sizing your equipment, sizing, the ductwork.
You know and figuring out your infiltration into the building and everything is really gon na affect how the system operates. So poor ductwork, I would say, is the number one cause for about heat exchangers. Ok, a lot of people blame each individual manufacturer and I don't really believe that I mean I'm sure, there's faulty manufacturers in some cases, but I'd pretty be a hundred percent. You know I mean it's pretty much all duct work issues, sorry kind of tripping.
Over my words there for a minute all right guys, let me get to uh one more thing on my list here and then I'll get to some more your guys's questions. Okay, so when I was my recent video, I had a walk-in cooler where we had an electrical short okay. That was a situation I just made the video if you haven't watched it check it out after the stream. Okay, so I had an electrical short on a walk-in cooler and I went through it thoroughly and I found some issues. Okay, the biggest thing was, we had an electrical short because the wires were improperly run and then I kind of stressed like how I like to write, run wires. You know making sure that the unit is easily sort of sorry, I'm tripping over my words today easily serviceable, okay. So the way that I ran the wires, I can pull the fan motors and fan guards out. Now I had a compressor contactor.
That was not. I could not take it apart. Okay, it was a sealed contactor and it showed me signs of wear. So I saw some white carbon like substance on the contactor, and it kind of made me think that the inside of it was paid it out.
Unfortunately, I couldn't take it apart. Normally you can take the cover off, but I just couldn't do that so I went went ahead and decided to go ahead and replace the contactor okay. Now, when I replaced the contactor, I miss wired it, and I mentioned something as I was starting to replace the contactor. I did not know that this was gon na happen, but I mentioned you know you need to pay attention to how these things are wired number.
One okay, so yeah sure take a picture. Take a video whatever, but you also need to understand how the system works in that situation. I miss wired it when I turned it on. Nothing happened: okay and I was able to stare at the contactor for a minute and just grab each wire and started looking.
It didn't blow a breaker, so I knew it wasn't a short, so it had a direct short. So it had to be something that I just missed wired and then I started following the control voltage: understanding the logic of the unit, knowing what happened when the low pressure, when the high pressure, all those different things and I was able to wire the contactor back Up - and it was literally just a wire - I misplaced and put it on the I think - number two terminal and I should have put it on the top number two terminal. That was it it's so important to pay attention and understand what we are working on. I think it's very scary right now, because we have so many newer people coming into our trade and they don't necessarily understand what they're doing.
Okay. I understand I make videos on YouTube. I obviously leave a lot of stuff out of my videos, because I don't want you guys to think that you can watch my video and just go fix something you need to. You know to do a proper apprenticeship.
You need to work underneath someone. My videos can help you, but you need to understand the sequence of operation of a system. You need to picture it in your head. Okay, when you do that, it makes it easier to diagnose, and it also helps you to diagnose faster all right. So I'm gon na get back to the chat here and see what I miss. So, let's see what else, what am I missing guys make sure to throw the questions and capslock if you can okay, so what time am I gon na be at? I hacky show great question Oscar, so I plan on being at the I hacky trade show here in Southern California. It's gon na be in Pasadena, California actually, and it is gon na be Wednesday. I'm gon na look at my calendar right here, Wednesday, the 20th okay.
So if any of you guys are in Southern California, I pretty much hey Zach. Thank you very much man. I really appreciate that dude I pretty much plan on being at the eye. Hacky trade show all day long.
So, for I, my plan work permitting and everything is that I'm gon na get there first thing in the morning when they open, probably what 10 or 11 or whatever time they open I'll, get there and I'm pretty much gon na hang out. I don't know that I'll stay till the complete closed, but I'll probably stay until 4 o'clock ish. Okay. Anybody that's interested in meeting up with me, hit me up on social media, whether it be Instagram or Facebook and direct message me whatever, and let me know when you're gon na be there and if I can I'll wait up for you or try to figure it Out, okay, so just message me: if you guys see me walking around say hey to me: okay, don't you know, don't hesitate to stop me.
If you see me talking to someone, that's cool just come up and say: hey shake my hand. I definitely want to meet everybody out there. Okay, so if you guys see me come say hi, what's my preferred storm huffman asked me: what's my preferred method of defrosting evaporators, that's an easy one: man, hot water, disassemble the evaporators completely and use hot water. Personally, I know a lot of people say: hey I use a torch or hey.
I use a pump sprayer I like to use the hose when at all possible, without making a huge mess. I always discuss with management or the kitchen staff and say hey, I'm gon na be in here and out of here, a lot faster. If you let me get in here with the hose, it's gon na make a little bit of a mess I'll clean it up or you guys can clean it up. Usually what I do is I approach management after I've like defrosted a walk-in freezer.
First, off always being careful to walk-in freezer, you never want to get water on the floor. You see they're gon na refreeze or it's gon na damage something. But if I'm working on a reach-in cooler or something like that I'll give them the option hey, I could do this real, quick. It's gon na make a mess I'll definitely clean up the mess, but a lot of times I say: do you want me to clean it up, or do you want one of your guys to clean it up and a lot of times they end up cleaning it Up themselves because they know that they're paying their guys a lot less than they're, paying me an hour.
Basically to do the you know the cleanup and stuff so but yeah hot water is my preferred method. I really don't care to use a torch or a heat gun, or anything like that. Just hot water seems to be the most effective, obviously making sure that your drains are clear and everything's draining out HVAC with Greg. Thank you very much for that super chat and thank you Zach and Adam. If I didn't say, thank you, you guys already. I really really appreciate it so Ike. I do see your email I'll definitely address it. When I get a chance.
Okay, a favorite brand, condenser or furnace. You know I'm not a residential guy, so I'm not super super comfortable with the residential equipment, but I would say if I had to make a guess, it would be some sort of ICP model carrier or something like that would probably be what I would put in My house - actually that's what's in my house right now - is like an arco air that I think we got from United refrigeration or something like that. We didn't spend a bunch of money on it, but uh yeah, probably a carrier product, but I mean on the commercial side commercial package units a Lennox is my favorite package unit to work on, just because I'm super comfortable with their controls. It's not because I think Lennox is better than Trane or anything it's because I'm comfortable with Lennox, okay.
So as far as like favorite units, it's really all about what you're comfortable with I'm not very comfortable. Nor do I care for your key equipment, nothing against some people, love York, equipment, they're, just used to working on them, I'm just not that used to working on them. So every time I work on a York unit, I usually have to scratch my head. I do all right with Linux and I do all right with train some of the Train.
Stuff can be a little confusing too. When I'm talking about commercial again, I don't have a lot of experience with the residential stuff. So all right, John current, should you call the health department if you see a ice machine that doesn't look clean? That's a really interesting question, John. I can't really advise you on that one, because it would kind of be a conflict of interest for me.
Okay, I would say that I'm not in the business to call the Health Department on my customers. I can say that one okay, but I can't really tell you what to do, but I mean obviously the Health Department is there to protect you, okay, to protect your health. So if you know of a situation where something's dirty so be it, you got to do what you got to do now. I would be very careful Jeff.
Thank you very much man. I really appreciate that. I would be very careful that was really cool dude. I don't know if you're a technician or a consumer or what you are, but I mean if you're a technician.
It's probably not in your best interest to call the health department, because if someone caught wind of you calling the Health Department on them, they probably wouldn't call you ever again. Okay, and they probably tell your friends not to call you too. You know so I like to leave Health Department issues to consumers, you know and if they want to make phone calls about that, then so be it. You know all right. It was really cool Jeff. Thank you for that. Super chat. Dude really appreciate it.
Well, the chat is being really weird: it keeps disappearing on me all right. Big-Picture diagnosis! That's right! Right! Oh definitely, big-picture diagnosis, so any advice, I'm pursuing better pay and lower pay with family-friendly hours, Zach very, very good question. All right! You need to balance the two. All right, what's better for you for me personally, family is number one right now.
Okay, I used to do the crazy. Might you know, obviously I'm in a different position, but we used to work like crazy and go nuts over the summers and all that stuff and get crazy stupid hours. And we came back from that because it was just too insane. So we like to keep it more of a family oriented.
I want to be home for my kids and different things like that: okay, now how to pursue better pay. Obviously, if you can, your best bet is to work with the company you're working with okay. However, you can talk to them. You know express your frustrations, but here you know here's what I suggest don't just go to your boss and say: hey man.
I need a raise. Okay. The best thing that I could suggest for someone to go ask for a raise. Is to go to their boss and politely say: hey.
How else can I improve things at this company? What can I do to make things better? I want to take on more responsibilities. I want to become more of an asset to the company. What do I have to do, because what you're doing is you're not just going to your boss, asking for money, you're going to your boss and you're, saying hey, I would like to make more money. This is how I think I can do it.
What else can I do? How can I help you so that way the company can make more money, and potentially I could make more money. Okay, obviously you want to try to work with the company you're working with before you jump ship and move on to someone else. If there's anything that I've learned in the position that I'm in is, as people will jump ship without communicating with you and they won't even give you the opportunity and it's a ensure there's, there's lots of things that I have done wrong. Okay, so I'm not gon na, say I'm innocent in all the situations, but give me a shot.
Give your employer a shot to make it right to make it better, be honest with them. I mean you can have a candid conversation. It doesn't need to be an awkward, embarrassing thing, don't let it get there just be honest, like hey, I want to be able to make more money. What do I have to do you know? Can I can I take out more responsibilities? Can I move into a management position all kinds of different things, so I don't know if I answered your question about that Zack. Hopefully, if not send me an e-mail I'll, definitely talk about it. Some more. So let me see bill. Thank you very much for that super Chad dude.
I really appreciate it. It says so your comment says change. The compressor on a negative 40 box recently appreciate all my help and insight man. Oh yeah, right on bill.
Thank you very much for watching man. I really appreciate it: okay, ACON 7xl will I be at the aah, our Expo in 2020, and the answer is yes. I can guarantee that you can catch me at the spoilin booth at the HR Expo. I will dedicate a couple hours a day of each day to all the first two days to the spoilin booth.
Okay, so I will be there: it'll be to be announced, I'm sure, there's gon na be meetups and different things with other youtubers and stuff like that. Once we get closer to the HR Expo, but yes, I already know I'm committed to hanging out at the spoilin booth it'll be publicized on all the social medias and everything. So if anybody does make it to the HR show, I will be there too. Okay, I will also be giving a talk at the HVAC, our HVAC school seminar, two days or three days before the aah, our show at brian ors, kalos office, the business he works for he's, going to be doing a big giant training event, and I will be At that event too, so, if any of you guys have tickets to that or considering it, definitely because the speaker lineup for that event is awesome.
Okay, I'm certainly looking at the speaker list wondering why I was invited to speak, because the people that are gon na be there are awesome. One thing: I got a confirmation for sure today that dick wore is the author of commercial refrigeration for air conditioning technicians. He's gon na be giving a talk before me, so I go after dick worse, so dick wars will be given an educational talk on refrigeration, so that should be enough just to go to the event just for that alone. So all right, let's see what else has big picture diagnosing ever backfired on me or gotten me way into the weeds storm? Well sure you know yes, yes, that is a good question.
So, yes, you can lose sight of what you're working on. If you start looking at everything, it's very important, you know that you, you still keep sight of what you're there to do. But yes, when I say big-picture diagnosis within that piece of equipment, obviously you know what the problem or the symptom is right, because you walk up and the compressors bad. So we know we got to salt that, but it's the whole point of big-picture diagnosis is once we change the compressor.
If we can't find anything before we change it, we need to evaluate it after to figure out why it went bad and, of course, communicating what the customer is number one. While all of that is going on. Okay, we don't just stand there for two days staring out at fixing problem after problem to go to the customer with a ten thousand dollar bill and say I fixed it. No, we keep the customer, you know with us the entire time, educating them like here's. What I'm finding this is what I'm it you know, the issues are, you know and that kind of stuff. Okay. So, yes, it is possible to lose sight of where you're at especially, if there's a lot of complex problems, but you know that's that's. What being a technician is you know you got to be able to to rein in on that, but it is definitely easy to get sidetracked and lost in what you're doing so all right, all kinds of stuff coming through here guys.
So if I'm missing your stuff, definitely throw it in again. Okay, when do I let a technician go. Well, that's that's a really hard subject: Jason. It really depends on a situation.
Okay, obviously, if at all possible, you want to try to work with people, you want to try to communicate with people, and you know try to work with technicians if you're doing everything correctly, a technician is gon na know when it's time for them to get. Let go because you've been communicating with them the whole time. Okay in a perfect world, you know when you have issues with people you're doing a write-up and you you know so you communicate a write-up, doesn't mean the technician is fired, but you should bring the technician into the office. You should say hey.
We need to talk about this thing that happened. We're gon na make an official write-up on here. We're just gon na write down everything that happened. I need you to know.
This is a warning. You got to work on this. You know that kind of stuff. Okay, so if you do that enough - and I'm gon na tell you right now, first off - we don't do that as a service company and we should okay.
But when someone has a problem, because then that way, there's no miscommunication, you let them know up front hey. This is an issue that we had. We need to make sure it doesn't happen again, it's in writing and then, by the time it comes. You know, technicians, honestly, they should know when it's time to fire them.
I mean you know. Sometimes of course, you're gon na have to let someone go, but it's it's a you never want to mean. I never want to deal with that. It's so hard to let people go because for us were a small company, so people become family.
You see these guys every day, so you know. Hopefully you have a mutual respect for each other and you can, you know, communicate, and so that way you can just verbally tell each other like hey. This is frustrating me and then let them say it to you too. You know in my position.
You know as an owner manager, you know you you know or whatever, if you're an owner or manager. You know you want to have good communication, and you also want to be able to accept criticism. My guys can come up to me as long as they're respectful and tell me that they think I'm an I'm cool with that. Okay, they can tell me that, and I'm not gon na be a dick to them. I mean you know it is what it is. If you have a with me, tell me: okay, hey dude, you're, being kind of hard on me. Okay, you know, but and I'll explain them you got ta. Let me talk, you know, here's why I was being hard on you, because this frustrated the heck out of me, okay, but there's definitely certain areas that I could work in so communication number one.
So I kind of went off on a tangent there. Let's see what I missed here, favorite ice machine and why also any future vantur in depth or HVAC our life video. Soon, yes, and yes and yes, favorite ice machine would be Hoshizaki. Second favorite Manitowoc ice machines, but Hoshizaki is number one standard: traditional cubed, Hoshizaki's, okay, Hoshizaki flaker's, my favorite flaker ice machine.
If I'm dealing with nugget ice, it's a full at ice machine would be my favorite, not a fan of Scotsman's, not a fan of ice-o-matic love. Me a man at wok, CVD, quiet, cube machine. I work on those every single day again, just because I'm super comfortable with them, nothing against ice Ematic. I just don't work on them very much.
Okay, the old ones were pretty simple, but I just don't work on him that much so vantur definitely coming up I'll work on one of those and HVAC our life yeah still talking to my wife about it, but yeah we'll get back on those again. So can I get that refrigeration book autographed by dick wars and do a giveaway? That's an interesting thought there familia. I don't know if he'd be up for autographing a book, but I'm sure we can figure something like that out. So yeah someone.
Don't let me forget that familia send me an email, HVAC, our videos at gmail.com, so Ernesto I'm not leaving anybody. Man, ain't going nowhere so advice from new guys about graduating about to graduate from school. Be humble! Keep your mouth shut! Listen to what people say when you go to your company, it's okay, to express questions and concerns, but just be humble about it and don't be rude. Okay, you need to just listen, listen! Listen! When you go to work for a service company! Remember that when you're going to a service company, don't be a dick about it, but you need to interview them just as much as they're interviewing you, okay.
So what I mean by that is is don't: go to work for a service company and then realize two weeks later, that it sucks and quit. Okay, you should ask questions. You should figure out the you're gon na, like it or not. Now I understand there's some things you can't figure out, but do your research talk to supply houses? Talk to other texts, you know, ask them to do ride-alongs before you commit to coming to work for them ride with them for one or two days ride with other service texts, different things like that, you know so very important. Do I know what is the difference of cold and frozen talking about science terms? What is the difference between cold and frozen? The lack of heat? I mean that would be the difference between the two right. One has less heat than the other. There really is no word if you're talking scientific cold cold doesn't exist right. We just have the absence of heat.
If you want to get all crazy and technical, you know the absence of heat is cold right. So definitely send me an email if you got if you want to talk about that more so, let's see what else we got going on. Do I work on commercial kitchen, gas and electric appliances? No, I do not. So it happened to me that I refuse to work or repair on certain equipments or I tried anyways.
Yes, it has happened to me that I have yes. It has happened to me that I have refused to work on equipment.
Another great show packed with great info. Thank You. Service area Kanata??
Hey Chris, I couldn't say this in the chat because it's longer than 200 characters. I live in Termo, California now I graduated HVAC School in Wyoming a few months ago, anyways I think they as in refrigerant manufacturers should make sure that they don't make cancer causing refrigerants because that is something I am concerned about in this trade I was 11 when my father died from pancreatic cancer but it amazes me that businesses only care about money and not the health of people,quality of the product, etc. I'm not getting political but I think the EPA or FDA some sort of government regulation administration should goto these refrigerant manufacturers and make sure that they aren't cancer causing because I AM AN APPRENTICE in refrigeration and HVAC I still believe that refrigerants that cause cancer and have carcinogens in them should be banned. I don't want to have cancer from refrigerants when I will soon be a Refrigeration HVAC tech and my daughters are only 6 years old.