Latest / The Refrigeration Mentor Podcast / Episode 251. Supermarket Refrigeration Service and Troubleshooting Tips

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Episode 251. Supermarket Refrigeration Service and Troubleshooting Tips · The Refrigeration Mentor Podcast

• 0:00
  Trevor: At Chillventa over last week was, it was three day event. I seen a ton of new technologies. I got to meet with a ton of different technicians out there, a ton of different refrigeration experts. What's really cool is to take the time to meet up with those, those people and learn about, I've learned so much. While I was there and this is how you get better is investing in yourself And that's why you guys are here so welcome and joining so we're going to dive into some supermarket, tips That's what this is all about. I'm going to talk, we're going to get into some compressor, electrical troubleshooting, and some case controllers, electronic valve case controllers.
• 0:01
  Well, more people join in. I love it. I love it.
• 0:02
  What was the most interesting piece you came across? Anything new? Okay. So yeah, before we dive into this, I was with the advancer team out there, did some videos with them and it's not new, it's not new to them.
• 0:03
  Them, I guess the heat pump is new, but they have a four four pipe. CO2 heat pump. So this is a heat pump that can do cooling and heating at the same time. So it's a four pipe. So I thought that was pretty cool. I haven't seen much of that here in North America yet, but that's, they, they got a bunch install.
• 0:04
  I'm actually going to go out there and check out an install. I didn't have time to do too much while I was in Germany. They're in Denmark anyway, but it's not far away. It's a five hour train ride, I think, but I thought that was pretty cool. There was also
• 0:05
  So Dan Foss, it has they had a screw cutaway. Like they don't design it. I think they licensed it. I thought that was pretty neat. I don't do too much on screw yet. You know, the, I know lots about the Vilter single screw. There, there was so much, I, I was only able to get to a hundred booths. In the three days, I was doing a lot of recordings and stuff, but I got to a hundred booths and there's like 900 And it's like 90 percent refrigeration. So if you like refrigeration stuff, that's the place to be.
• 0:06
  So CO2, heat pumps in quite a few of those, I seen another system that did the same thing. So it did low temp, medium temp high temp. Air conditioning and heating all at the same time. So we're going to see more and more of that, depending on where you're at. I seen tons of a system. Most of the systems had ejectors on them.
• 0:07
  What, what I do really like what I do at these events, there's so many different racks at these events. But what I did do at all these systems, if I haven't seen it before, I go step by step from the compressor every time. Like I've been, it's a lot of you been in my trainings before supermarket training, CO2 trainings, and getting to that PNID and walking through it.
• 0:08
  Step by step that is key.
• 0:09
  Yeah, this is, this is the company right here. So I, I'd never heard of these guys before.
• 0:10
  Never seen them before. They had two cool systems. One goes on Marine ship. So it's a CO2. Look at a shell plate heat exchanger, super cool. But what I did is I started at the compressor discharge line, go down. I went up and I went around to all the different components that they do. They got a bypass in there.
• 0:11
  So in low ambient. It'll just bypass the gas cooler. It's not that it's anything new, but it's just different. I've different manufacturer. I'm trying to learn from every different manufacturer. So I understand from the mechanical side to electrical side. So I thought that was pretty cool. You know, you gotta try to get to an events like that.
• 0:12
  Is it cheap? It's not. Honestly, I'm telling you, you gotta save up for it and plan for it. But it's something that is well, well worth it. Okay, let's, let's move on here.
• 0:13
  So for those that are new and haven't, you know, don't know much about Refrigeration Mentor, we're a team. Technical training organization.
• 0:14
  We train and build a refrigeration technical programs for refrigeration contractors, supermarket contractors. We do some manufacturer training stuff, but some of the things that we're doing is a refrigeration mentor podcast. There's even quite a few of you that are on here that who have been guests on here.
• 0:15
  So I'm sure I'm going to want to do some more podcasts with you. I love doing podcasts with technicians because you know, I was a technician in the field, you know, and I know how it is out there. It's not always easy, but there's a lot of fun. And, you know, if you make it fun, it can be a lot of fun. Our job is tough as a refrigeration technician working real late at night in the middle of the night.
• 0:16
  I was talking to even Aiden today and, you know, it's not, it's not easy. Our job at times, but you know, it's rewarding when you solve a problem. And when you can fix problems that other people can't, or if you can do a quicker now, I've been teaching and working with a lot of technician lately to get them to see, beat their times, like make your, make it a competition with yourself.
• 0:17
  You know I know, you know, there's, we want it, we need to. Have family time. We want to make money, but you got to push yourself to be the best out there in the field. And I'm going to show you some stuff. We're going to go through. Like I flew down to Georgia to hang out with Hill Phoenix and Copeland and a contractor for provision refrigeration earlier this year to learn how they Czech Republic.
• 0:18
  Yeah, that's exactly, exactly right. But I went down there, so I want to make sure my courses are, To what's happening out there in the field. A lot of people are like, Oh, Trevor, you haven't been in the field for a long time. You don't know how it is. Well, I do. Cause I'm going out working with the technicians, doing the startups with them to make sure that I can give you the right information out there.
• 0:19
  Definitely social media platforms, heavily on LinkedIn, Instagram, starting to do a bit more on Facebook, but mostly on LinkedIn. So if you're not on LinkedIn, that's more the difference between Instagram, Facebook to LinkedIn, that you got a lot of more businesses on there. I'm seeing more and more technicians.
• 0:20
  When I started on LinkedIn about seven or eight years ago, I think I was the only technician on there. There was some, I shouldn't say that, but now I'm seeing more and more because there's a lot of professional development you can get out there. Which is super cool. Okay, Chilventa, we all ran through those pictures.
• 0:21
  Now let's dive into some troubleshooting. Okay, we'll dive into this. We'll spend a little bit of time with 20 minutes there. Electrical diagrams. So what I've been learning and teaching more and more of is the electrical side. Like I've, honestly, I was in the field, For many, many years. And even when I got out of the field, you know, and when I went and worked for the manufacturer, I, I was still, wasn't as good as I should have been in the field because you know what, I didn't spend enough time.
• 0:22
  With the meter, with these wiring diagrams and doing it because it was hard. Okay. If you want to be the best. You got to do the hard stuff. And I see technicians that come into my programs who are skyrocketing. They're passing the guys that have been five years in the industry longer than them, because what they're doing is the difference.
• 0:23
  The difference is they're taking out this wiring diagram when the system's running fine, and they're putting her meter on different places. Like we're going to talk about tonight and you're getting an understanding. Okay. I should have voltage here. I shouldn't have voltage there. I should have a DC voltage here.
• 0:24
  I shouldn't have a high voltage here and going through it. Step by step. This, the only way you get better is doing it in the field. And a lot of people are like Trevor. Okay. Well, you only do online programs. Why don't you do, can you come to my office and do it in person in front of my 20 technicians or whatever?
• 0:25
  I teach people who understand how to use tools in this continuing education. I could be out there holding your hands, or I could show you how to do it. And you go out and do it yourself and build your own confidence. And I'm seeing technicians now taking drawings like this and learning like four to five years where technicians struggle.
• 0:26
  Like me, I struggled for five, six, seven years in the industry to try to learn. Cause I didn't have anyone coaching me. And I was always a phone call away. Guys were great that I work with. Loved a lot of them. The thing is there, it was just, I was a phone call away. It wasn't like I was getting a coaching and I was taking them out to dinner in the evening and going out, you know, trying to figure ways to learn and absorb as much knowledge as possible.
• 0:27
  And now with the controls, the way it is, we got, we got to get better faster. And you know what? I've talked to two or three people today. I talked with my friend, Joe at our UI actually today, I think it was, or yesterday. And he was like, Trevor, I already told my boss. I really wish I only worked on CO2 systems.
• 0:28
  I only wanna work on them. I don't want to go back and work on the HFCs because it's funner, 'cause there's more electronics, there's more wiring diagrams. I can troubleshoot and look at stuff from the Microthermal or the E two or the E three, and it makes my life so much easier. I can figure stuff out in half the time than an HFC store, just because there's so much controls, I can get into trend graphs where in the older stores and HFC stores, you don't have that stuff.
• 0:29
  And I'm seeing more and more technicians who come into my CO2 programs. They go and start working on CO2. They're saying the same thing. They're like, I just, I just want to go work on CO2. Now it's just getting over that, you know, the learning, the safeties of it, things like that. Because all of you out there, you want to be safe.
• 0:30
  You want to go out and do a great job, get paid and go home to your family. And I want you to do that too. You want to be you want to be safe out there, but you gotta, you gotta, sometimes you gotta walk before you run. And this is what we're going to kind of talk about a little bit tonight.
• 0:31
  I work with a lot of different people around the world and they, they want to help. They, all the manufacturers deal with, they want to help you guys out there. They know that there's sometimes there's issues in the field and and they, they want to have the top talent out there working with you, but it's just like your companies, it's hard to get really good refrigeration people.
• 0:32
  It's not easy. It's not hard. It's not easy to find people who are dedicated, who want to learn, who want to work outside their hours, you know, to, to learn more, to be the best. All of you do though. I know you're here. You're Chris. What's up? I think I said Chris with two Hector, Eric, you guys are here, so you're putting the work in.
• 0:33
  So I'd love to see in the chat box. Where do you start when you're doing electrical troubleshooting? So you get a call in the middle of the night and the call is that compressor three is off on what should I say?
• 0:34
  It's off on the compressor fault relay. So that, that opened up. So your, your demand, your cooling demand, where would you start with that? So you get the call. You go to the store, there's just people in the warehouse, there's no managers there. The alarm went off. They don't even, didn't even know the alarm went off.
• 0:35
  You know what I mean? You get the call and you go out and the compressor's off on run proof. Where do you start? You guys can go throw it in the chat. Anyone wants to unmute? If it's just one of you or two, you want to unmute. Where do you start with a electrical call like that, or a troubleshooting call like that?
• 0:36
  Speaker 3: Usually, usually I start where I know I have power and I go until I lose power.
• 0:37
  Trevor: There, there you go. Okay. So you get your meter out. Okay. And where, where on this circuit here, so where would you want in
• 0:38
  Speaker 3: neutral on the compressor module?
• 0:39
  Trevor: You'd go on the module here?
• 0:40
  Speaker 3: Yeah, the L and neutral L.
• 0:41
  Trevor: L to M. Oh, L to M on here? Or would you, let's do it off the diagram. Would you, I didn't really hear you. So we've got some people, a contactor, check oil and refrigerant level in the rack, check for voltage, power source line. Okay. Always start at the beginning of the, Keith, what's up brother?
• 0:42
  Haven't seen you in a while. Great. Great. So yeah, you want to start on your main coming here. What you need to first do, you understand that electrical wiring diagrams are de energized. All of them. Okay. Oh, power module L to N. Okay. But if your demand is demand is, is off, then you want to which one is number three compressive?
• 0:43
  Well, that's a good way to start. Right. What do you want to understand? First thing, electrical, the wiring diagrams, de energized. So this right here is closed and de energized this relay MTER1 gets energized, that coil, this opens up. You got to see here on this drawing. PD two. That's a different drawing on a different page.
• 0:44
  And every manufacturer does it a little bit different. You could have line diagrams. You can have a pictorial wiring diagrams. There's lots of different things that are, it shouldn't matter. What you need to do is look at a lot of them and start troubleshooting all of them. Well, a lot of times what I used to do is I just run up and I'll take my mirror and I'll start just checking for power at all different places and not really knowing what that full circuit is.
• 0:45
  What's in that circuit. Electrical wiring, unless there was like five rentals on it, they're usually pretty, they're pretty accurate. They're still pretty accurate. Unless someone went in and changed stuff. I used to hopscotch technique, put one on L one and use the other lead the other side, sir. Great. So you put, here's my black, here's power coming in.
• 0:46
  We know it's one 20, 60 Hertz single phase. So we put a lead rate on here. We put a lead rate on here. Well, we put lead rate on here and then all of a sudden you go here Okay, do I got 120? Well, my main's coming in 120. So we got 120 over here and it depends if you have You you should have a terminal strip because you'd know like this is 17 on the terminal strip 15 13 11 2 so you can go to the terminal strip, you know, but so if you got one here, that's a great way to do it , so I go here do I got power do I got power do I got power?
• 0:47
  So should I have power right here if I got i'm tripped off?
• 0:48
  Speaker 2: This is neutral
• 0:49
  Trevor: right here. Like if I got one meter of one lead here and I go right here, would I have one 20 if I'm off on my command?
• 0:50
  Speaker 2: Yeah, you should have the one 20 there.
• 0:51
  Trevor: Yeah, you should, because this is going to be closed because this is the error in the error in the control circuit, but if it was running fine, I went to here, should I have one 20?
• 0:52
  Speaker 2: You should have one 20. You should shouldn't have one 20 on X one and y black, X one and X two. No, no. At five. Like U, L one, that is five. Yeah, that wire and the X one. You shouldn't have the power. You shouldn't have 120 120
• 0:53
  Trevor: because this is open.
• 0:54
  Speaker 2: Yeah.
• 0:55
  Trevor: Okay. So next step. So we check this with this is this is open because we're tripped off, right?
• 0:56
  We got an error in the control relay. So hopscotch him. Where are we going? So we got we still got our point right here. Where's next? So we know this one's stripped off. How are you going to break up this circuit? Because there's different ways to do it. You could start over on this side. Right? And start going through.
• 0:57
  Or you could start right in the middle of the circuit. Right here, 13 or 11.
• 0:58
  What do you guys prefer?
• 0:59
  Speaker 2: No, because you have to go through the on off switch. Turn the on switch. Then you can see you have the power. There should have 120 there. Then start checking. One should be on the X2. Then you can keep checking the power or you have to ground it somewhere.
• 1:00
  Trevor: Well, if I, this should already be on because that's just your compressor switch on your rack.
• 1:01
  So that's just turned on, you know, for sure that's turned on. This is actually circuit one. So if I go from here to here or wherever, that's going to be still zero anyway. Right. Cause it's closed. Yeah. Like, yeah. I go to here. So this is my high pressure switch. So that's this right here, this little black thing, this little electromechanical high pressure control.
• 1:02
  Speaker 2: Yeah. You can check from point two to the X two, like on the end or the ground. You can see if there is a power. If you have the power there, you should have the power. If you have the on button there, right? Like if you have on, then number 11 with the number two terminal, should have power number
• 1:03
  Trevor: two,
• 1:04
  Speaker 2: should have one 20 there From, from here to here?
• 1:05
  Yeah, from there. Even terminal number two, you can go to terminal number two. You should have the power there. Two to two.
• 1:06
  Trevor: But you once again, you're not taking anything off here. You got to go back in to the electrical panel So you got to open up the panel because this goes back. It's not like you're taking any covers off That's what I used to do.
• 1:07
  Speaker 2: Then you have to go to the terminal blocks, right?
• 1:08
  Trevor: So right there that is
• 1:09
  Speaker 2: 11 11 and 2 you can check because first you have to check 11 Then you know, you have power on the pressure switch your pressure switch is not open Then you're going to have the power on one.
• 1:10
  Trevor: Exactly. So, but right here, you can't really check these, right?
• 1:11
  This would be the terminal block. So like Wesley said, and then, yeah, so Jason as well, if I go to 13, that's going to give me an idea if I have power or not, but one thing we have here at M M T. Fault relay. So this is M T F R one. So where's MTFR one. So you've got to look in the diagram, M T E R one. So that's not, that's not it.
• 1:12
  So where's M T R one. I think it's down here. M T F R one. No, that's a switch right down there. M T O R one M T E R one.
• 1:13
  It's
• 1:14
  Speaker 2: supposed to, it is working. We can say it's working, then we can go further.
• 1:15
  Trevor: Yeah. Well, we know that one of this is open. This is not even on this page. Yeah. So you got to understand that when you're looking at a wiring diagram, sometimes all the information is not on one page. And this is something important because I didn't understand that.
• 1:16
  I thought everything was on there when I was first troubleshooting stuff. Everything's on that same page. Okay. So following it, I like, like the couple, a couple of people says doing a hopscotch method, you know, whatever way you do it, you want to make sure you're always doing it through the circuit, if that makes sense.
• 1:17
  Don't be going to ground. I've seen that I've done a lot of that. Because nobody taught me how to do electrical troubleshooting. I would go from here to ground. Oh, I got one 20 from here to ground. Oh, I got one 20 out here to ground, here to ground, here to ground. You got to go across the circuit and see if you got power or if it's open, you got load or no load.
• 1:18
  So that was exactly 13 proves the safeties are closed. So you want to go and make sure is this. This close next. You want to make sure that is the, the oil level control workers. So that's this little, little guy right down here. So that one's running off oil pressure. I think a Aiden said it earlier up in the chat that check if there's oil in that compressor.
• 1:19
  You want to go and take a look at that stuff. That stuff is key. That's going to be telltale signs for you to get a better understanding of if the compressors that oil or not, because if you go and you look in this as a fault and it's red, you don't have oil in it, then you can understand, okay, where's the oil, is it a flood back issue?
• 1:20
  Is it, is there oil in the reservoir? Is there oil in the separator full? This one here, it'll have level sensors in the oil, several separator and reservoir. So you can check that stuff out. You don't see that a lot in the HFC side of the world, but this is the step. You got to take your time with it.
• 1:21
  And once again, like understand, like all right here, we got. MT compressor one terminal board error input board 1. 5. So you go back to that multi flex board and take a look at it. Okay. Or whatever control board. It doesn't matter if it's Dan Foss, it doesn't matter if it's Corel. You go in and you just go check that board point.
• 1:22
  And you can go, what's cool. What I like about the way my advancer, I guess as well, he'll help Phoenix, they label all these. Well, I see as Brown, two 15 Brown to see that most manufacturers do that, which good, it makes it easier for us. So when I go and I can check this right away, this input, I just look for Brown two 15 to 16.
• 1:23
  I know it's this relay here, and then I can go and check it really quickly. You can go check if it's open or closed. Same with this one here, my MT low oil relay, MTOR1, that would be right up here, MTOR1. So this would be a case of, okay, this is energized. This is right here. This won't be closed. That won't be open.
• 1:24
  But if all of a sudden that example, we said there was no oil in that compressor. This one here will be closed and this power module will be open. If that makes sense.
• 1:25
  Going through the step by step, the biggest thing is, is that what I need you to do this week is to go out and find this electrical wiring diagram on whatever system, it doesn't matter if it's Hussman or Hill Phoenix or, or zero zone or LMP or Carnot, or the list goes on. It doesn't matter. Go out and take your meter and just take one circuit, like this compressor circuit, because they all have these electrical wiring and sometimes you can't find them.
• 1:26
  So you got to call them up and go get it, but when you get it from them, go in and start troubleshooting and checking it when it's running properly. That's the big, big difference because you can go in and trip certain things off. You can unplug certain things. You know, you can take off, just say you have a optical eye sensor.
• 1:27
  So an OLK one on a, on a bits or one, you can just unscrew it off. And all of a sudden it's not going to see the oil and then you're going to get an alarm and that's going to trip
• 1:28
  our, our engineers leave much to be desired.
• 1:29
  Oh,
• 1:30
  you
• 1:31
  guys, all the manufacturers that I, even, even around the world, they all have good, good engineers. You know, sometimes it's not the best design, but most of the time, it's They're good functioning systems, all the manufacturers, you know because people want to make good equipment.
• 1:32
  All the manufacturers want to make good equipment, just sometimes some is better than others. And then they re they rework on it. What I was actually with Hussman a few weeks ago, and I was talking with some of their engineers and sale people and what they want is feedback. They want to make better equipment, right?
• 1:33
  But sometimes they don't get the, the right feedback because a lot of people And not for only them, but they're, they're not giving constructive feedback. They're giving complete like complaints and feedback. It's like, you got to give like a constructive feedback and how, how they can make it better. And sometimes you just can't, sometimes they can't sometimes it's a spec from the end user.
• 1:34
  They want it that way. And the manufacturers. They do they had sometimes just do it what the customer asks, right? And then right here s the se b1 module. So these ones are going away They're just going to the bits or IQ module, which is cool. It's getting into Bluetooth and stuff so you can see all the stuff there I've seen it a few times now, but you can see everything that's going on that compressor wall.
• 1:35
  It's running which is really cool Right. That stuff is really cool when you can see all that stuff, but that is right in, in here, right? This is a little module right in here. And then the same thing. You have L L and N you got 14 and 12. So inside here, you got some circuitry happening. You got your discharge gas sensor.
• 1:36
  Did you, have you seen CO2 in a super low minus 40 range? Okay. Oh, this is something cool that I seen. Somebody asked me Dorin had a 900 horsepower CO2 compressor was massive. So I didn't have a picture. I didn't take a picture on my phone. Julia my videographer and my photographer she took some pictures of it, 900 horsepower, another compressor.
• 1:37
  I seen Dorian has a two stage CO2, which has been out for a long time. So you can use one compressor. To do low temp CO2 Frasco had one, they just launched their two stage CO2 compressor, which that was cool. Cause I know, I think it was Andrew who asked. So I think that's cool, cool stuff like that. I really enjoy.
• 1:38
  So yeah, so this powers, powers the module. You have sensors that go inside, inside the compressor. So you get, I think there are PTCs in these ones as well. So inside there, that's your motor overload. That's what this is. This, this device right here is a motor overload. You'll see some on the the Copeland models.
• 1:39
  They, they turn now to core sense protection. They used to be the Criwan INT six, nine or one, six, nine, whatever, whatever module, but these are just motor protectors to protect that motor. So when you start to get it outside the operation range, compression ratio, massive You start building up heat and then those will, the resistance will change and then it'll knock that that off.
• 1:40
  Right. So all of a sudden it'll go, okay, we're not working LN anymore. We're going to 14. And then all of a sudden you power up this M T E R one, which they'll close this relay down here, open up close this relay right here.
• 1:41
  Pretty, pretty cool questions on that.
• 1:42
  Great job. Thank you for the participation. Really appreciate this. What are we going to dive into next? Let's talk a little bit about case controllers and wiring diagrams. How many of you guys working on case controllers now in Electron?
• 1:43
  Let's see say yes, I am or yes. How many are working on say Dixell or Copeland? It says Emerson on there. They all, they're all going to be changed to Copeland, CC 200, micro thermal, Corel, RDM, usually Dixell all the time. Jared, what are some of the brands you're working on? Aiden's got micro thermal, Dan Foss, good RDM, lots of Dixel, Corel.
• 1:44
  Cool. I'm doing so I'm start, I started a new show called CO2 experts live. So this is where I'm fine. Technical experts from around the world starts next Wednesday, 10 15 a. m. Eastern time. So I know lots of you be at work, but you can listen in if you want. My first one we're going to, I'm going to be doing with my good friend, Nabeel cook.
• 1:45
  He's from Omega solutions. We're going to dive into oil design oil size and oil troubleshooting on CO2 racks. Okay. It's going to Andrew, it's going to be here. It's going to be on a zoom just like this open platform, but we're going to be talking about how to size a system, the, how much oil you need for a system.
• 1:46
  We're going to get in the following week. I'm with my good friend, Kevin Mullis. He's out of integral out of the UK. This guy's a technical expert on CO2. He's been doing CO2 for like 20 years and we're going to be doing it on. Case controllers, so wiring troubleshooting startup on case controller. I think we're going to do Dan foss and corral The following week after that I got rusty walker from NASRC, and we're going to be getting into electrical wiring diagrams as well.
• 1:47
  It's going to be awesome And i'm gonna run like I did co2 mondays for two years almost every week So if you haven't checking out any of those co2 ones, I would say start with that.
• 1:48
  This one's gonna be I
• 1:49
  Speaker 2: definitely have
• 1:50
  Trevor: yeah good good. There's there's lots more to come I'm, super excited because I learned You know what I mean? I learned from them and try to share as much knowledge as possible. I know I was doing a meeting with some technicians last night and they're like, man, we're working on Guttner and don't have much information from it.
• 1:51
  When I call them, I don't, we don't get the top support. It's just about who you get connected with. And I got all the Guttner guys send me will Annette. He was on the podcast. Definitely check that one out. If you want to learn about how to set up an adiabatic gas cooler, I talked about all the parameters, default parameters, how to change them.
• 1:52
  But he sent me all the videos. He's like, here, this is what I send to the technicians. And so this is what I use in some of my programs and send it out to other technicians. So you get a better idea. And so I just send it to the guys. Okay. So yeah, I put that in the chat. That's the CO2 expert one. So just click on that link and then sign up.
• 1:53
  So Chris, we work with six 679 K. Do you need remote display? Oh, you, you don't necessarily need remote display. You can use remote display. And if you look right down here, it says keyboard. That's where you would put the remote display on there. CO2 Monday series stopped. I did. I think there's like a, almost a hundred videos on my YouTube channel. CO2 Monday is free. Go, go check them out. I still got like from CO2 Mondays. I know since February, I haven't been doing much on YouTube. I've been doing lots of shorts and stuff, but I haven't been uploading a lot of the videos.
• 1:54
  I've just been working on so many projects right now. I do have quite a few more YouTube videos to come up on there. So yes, so Chris to do the that that's a good point to do the addressing. You do need a remote display if you're replacing, but if you're networked to it, what everyone will be one.
• 1:55
  So you could plug, you know, if you have someone plug it in, you can connect it with the E2 or E3 or whatever thing unplugged and change the address, go to the next one, plug it in. It's, it's time consuming either way, using the remote display or having someone unplug it because each one of these, I think is one, they all start at a address one, if you're doing a startup now, if you're doing if you're doing A retrofit.
• 1:56
  Yeah. You'd probably be best to have that or whizmate. So you have a, if you ever heard of whizmate, you need a laptop, hopefully more and more of you are getting laptops as a tool because very, very, very important to have that going forward. If you want to be a refrigeration technician, solving lots of problems, you're going to need, especially CO2 makes your life so much easier.
• 1:57
  Might be fighting it right now. Why do I need a laptop or my company should be buying me a lab? Don't think about that stuff. You have a laptop, you can go to Best Buy or to electronic store and buy them for a few hundred bucks. If you want to top of the line, one pay four grand. You can do that too, but I don't recommend buy one.
• 1:58
  That's that works. You go to Walmart and buy laptops now for a couple hundred bucks. That'll work and get all these different programs. The Dan Foss ones, the Corel ones Copeland ones. So when I took a remote display off, it wouldn't read the super read at all. It would just say zero, but the display on it would read interesting.
• 1:59
  Where can I learn more about control electrical diagrams? Okay. The best, best way to do is actually go into the manufacturers manuals. First of all, so it could be Crell. It could be Dan Foss. It could be RDM. It doesn't matter. That's step one. Step two is go to the store that has these, these controllers just like this one.
• 2:00
  This one's from a health Phoenix store. Here's a picture of it wired up. I actually took the wrong. So this is two and this is one. I think, yeah, maybe it's the same one. I can't remember. It's the right control. No, this is controller 24 is controller 20. So I got the wrong, wrong picture, but you'll get the gist of it.
• 2:01
  So, so Jared, what you need to do is what I would, sorry, not what you need to do. Cause you don't have to do anything. What I would do is I would go to the store. I would find his electrical wiring diagram. I would get the XM 679 case controller on the side of these controllers. There's a version code.
• 2:02
  That's very important because Dixel over the years, they changed their version. So there's different softwares inside and different firmware. So you could be reading a manual and then you're going through the controller or through the E2. And then all of a sudden there's missing parameters. So always look on the side to make sure what version rate you got.
• 2:03
  And it's no different with Dan Foss or Corel because they change over time, they evolve, right? So you want to make sure that you have that, that right diagram. But for this, a lot of case controllers are very, very simple. If you spend a few hours, I'd say even 20 hours. And what's 20 hours. So that's 20 weeks, say an hour a week.
• 2:04
  If you do one, one day, one afternoon on a Sunday, you could learn these real well. Okay. Going out to a store that has them. Maybe, maybe you're doing it on your own time, Jared. And I know people are like, Oh, I need to get paid for every minute. But if you want to learn to be the best, sometimes you got to go to that.
• 2:05
  You call one of your buddies and you're like, I'm at the CO2 store right now. Or whatever store it is. I'm at the store with the controllers. Give me a call when you're there. I'll come over there. Go on your own time for a, for a half an hour to learn. Cause when you learn that stuff, it sticks with you.
• 2:06
  It's only 45. Whatever you get paid 6 an hour. Yeah. It's nice to be in your bank account, but you can go take overtime. No problem. You go, go do overtime. You can take on call. We'll pay for all those one, all those times go take on call. And for sure, you're going to make up that time that you're, you're doing to learn.
• 2:07
  Right. So the biggest thing here, and most of the, most of the time, what happens is you get sent some sensor fails. It doesn't matter to manufacturers. Sensors fail because there's so many of them. You want to check, you make sure your power's coming in. So you got, here's a fuse. First thing is check the fuse.
• 2:08
  If we got the fuse right here. Okay. Here's the fuse. One C one C this coming in. So now we got that. We want to make sure you get the right few fuse in there. Okay. Then you want to check all, all the different. Power sources. Okay. Do I got power across here right now? Do I got power on my lights or defrost, whatever it is you're checking.
• 2:09
  And I recommend doing this when it's running properly, you go to a store. First time you're there, you never worked on case controllers or you did take the little cover off. Sometimes they're in big panels. Sometimes they're on the unit. Sometimes they're underneath, which is not the funnest thing. Get your meter out and start putting across all of And see what's working.
• 2:10
  You'll see what the wires, like this is wired up. This is wired up. This is wired up. This is wired up. What we see here, we're not using the lights. We're not using the compressor. Right. But we are using the fan. So we're a power to the fans. So this pulls in the contactor or fan. So all of a sudden you've got to go and where's this.
• 2:11
  This is contact rat. You want to want to go check that contact. And I think it's right over here too, right beside it. Then you want to check all these sensors, right? I know this sensor here, this is an NTC sensor, 10 K. So what's the temperature? You go to the resistance chart for that specific sensor and you match it up.
• 2:12
  Or if you want to test it, you put it in 32 or zero degree water, right? And then you match it up to the, to the thing. Same thing with the transducers. You want to check the transducer? Well, I got an in plus five or plus out. These are, these are plus fives. So first is do I got voltage? Okay.
• 2:13
  Well, I should have five volts DC there. Give or take 0. 1, maybe it could be 4. 9 to 5. 2, whatever. So do I got five there? And then you go to your source right here. Well, what is that? That's, oh, that's 3. 8. Well, what's the range of that transducer? You can go put in a calculator. Or you can go look at like the charts that the manufacturer of Sporin has the charts.
• 2:14
  Wiki has the charts, whoever it is, or you can go to an interplay linear calculator and you put your zero volts to five volts, or if it's 0.5 to 4.5, whatever the transducer is. And then you put your pressure range zero to 100 or zero to 500, and then it'll do a calculation. This is, should be around this pressure.
• 2:15
  Give or take a few PSI and then you can put your gauge on where the transducer is and match that up. A lot of people go and hear more and more of it. People going and changing parameters and stuff. And you can't, you can't do that. If it's been running for six months, it's usually not a parameter issue.
• 2:16
  Could be, but most likely it's something else. Dirty honeycomb, dirty baffles in the back fan out, you know valve not opening. I, yeah, I had a call. Yeah, I talked with a technician today where they were running into an issue with a pulse width modulation system where all of a sudden it would, when it starts up, it opens up, it floods the thing.
• 2:17
  And then all of a sudden it looks at low super and then it closes right off. Opens up one of the things and then closes off. So the case wasn't working properly. So what he did, he took it from 85 percent opening, moved it all the way down to 50. And all of a sudden he's like, now it's not open and we're not flooding the coil as much.
• 2:18
  It's taken a little longer, but you know what? The circus finally run it. So you might have to go out and do some of that stuff. But you got to put the time in, you got to read those manuals. What are your thoughts? What are your thoughts on, on case controllers? Do you like them? Do you not like them?
• 2:19
  Does it make your life easier? There's a ton of you are already working on them.
• 2:20
  Trend graphs are best. I love that too. One of the biggest things too, like these, these ones here are pulse pulse valves, but it doesn't really matter. Getting in to see those, Percentage. Well, the pulse valve doesn't give you a percentage gives you how much open how many seconds is open. It could be a six second cycle.
• 2:21
  But on the stepper ones, I always go when I'm troubleshooting any separate ones, I'm looking where the percentages. That's how I'm troubleshooting. What the is that that valve should be sized in around 50 to 60%. I look at the trend graph. The last six months has been running at 50, 60%. Then I go into the, all of a sudden we get alarm now is running at 90%.
• 2:22
  What's wrong? Well, we're not getting liquid in there. What is it? Is it a filter? Is it a low on a filter? Is there a plug? Is there a blockage? Is there a valve shot? Or it could be one of quite a few things. Is the coil frozen up? That would give you, you know, if the coil frozen up, we'll do it higher. And it would be lowered.
• 2:23
  I would close it off. So anything that would starve it, make it, make it starve. Right. When I learned them, I liked them a lot more. Yeah. A hundred percent. When you learn them. You're going to like them a lot more. And this is, I have this conversation with the other technicians. Like, Oh, I like the Excel or Copeland, or I like Dan Foster.
• 2:24
  I like RDM, but at the end of the day, they're all doing the same thing. It's just what you're more comfortable with. It's what you're more comfortable with. Okay. We're not going to get into demand cooling. I was going to talk about that too, but I think we went through some electrical wiring diagrams, check the resistance, easy to check the transducers.
• 2:25
  You just need your meter out. Here's the, they've got a remote display on all of them. Right here. So you hook it up to the keyboard. That's these ones here. Good. Calm loop back. Yeah, that's it. So what's your thoughts? What do you think?
• 2:26
  Some value in that information.
• 2:27
  Okay. I want to talk about a couple of things that I got going on. One is that CO2 experts definitely checked it out. So I've got a supermarket Academy too. So I just launched this last month level one is, is released now it's released. And so basically this is diving in short videos to the point where you're learning about.
• 2:28
  From the fundamentals to the electrical troubleshooting, PNIDs, diving, diving in. Here's a kind of an example of what goes on in the first level, doing secondary pump system, diving into understanding a glycol, how to troubleshoot it, check and setting balancing bowels and they're coming. Like those systems are coming out there.
• 2:29
  I know there's going to be a ton of them happening. Some people like it, some people don't like it, but 100 percent you're going to start to see more secondary systems out there. So this is the first level. You can't get to the second level until you do the first one. I haven't released these. I haven't opened these ones up yet.
• 2:30
  But I will be opening them soon. I just wanted to share this with you all. I'm going to put this in the chat. So if anybody's interested, or if you know anyone, you know, this is for technicians who have been doing refrigeration, super micro refrigeration for a few years and you know, know how to use the tools.
• 2:31
  Cause all my trainings for continuing education, you got to know how to use a meter and gauges, if you know how to do that, I can teach you a lot of stuff. Because you've got to go out there and do it. And as you can see, if you go down here, here's the, here's the prices of it. I haven't released the full bundle yet.
• 2:32
  Like I say here, but here's the individual course. Even like here, here's what it looks like. Here's like a lot of the different sessions. There's a ton here on, on this one diving into, and this is just a very, this is the fundamentals. This is week one on level one in the fundamentals is what we dive into.
• 2:33
  Lots of workbooks and stuff like this is kind of one of the quizzes as well. Kind of what it looks like. Cause I want to make sure I challenged them. And then I have a ton of courses coming up. Like tomorrow I got a intro to CO2. This is one of my favorite courses to talk about diving into oil management.
• 2:34
  We'll get into compressors. Like we dive into just, you know, troubleshooting, learning about CO2, the safeties, how to charge systems. And the big thing is the safety for me, right? At the end of the day, you want to be safe out there. If you know any designers, I got a design course coming up in a week and a half, I think I got two spots left in it.
• 2:35
  This year, if you know anybody who wants to learn how to design trans critical CO2 systems, game changing course. I've got advanced service program coming up. Now those ones are my favorite as well. Like diving in how to service systems and then doing compressor teardowns getting you go out in the field, do a field assignments.
• 2:36
  That's what my course is all about. So not that you just come and you hang out with me and you learn a little bit is you got to go out there in the field and apply some of this stuff. That's the most important, you know, and when I see you guys doing that and I get the feedback, you're like, man. Okay. You know, I knew this, so people told me about how to check an OCV, but I never actually went out and did it myself.
• 2:37
  And after I went out and did what we talked about and you showed me a video too, it was like, man, this makes sense. I'm going to do this a more system. Then you just get more comfortable. If you're working on compound compressor, it doesn't matter. And then we got another CO2 service and maintenance program.
• 2:38
  This one's coming up on in November. So this one's going to be more on startup commissioning. So we're going to go in through, okay, all the top things you need to look for, for startup. I, like I said, I spend some time with a couple of different manufacturers on the control side of it, on the startup side, what you need to do step by step because a lot of people want to get.
• 2:39
  Some gas in, in that system. We want to get the CO2, but that's not getting the gas in simple. You can get the gas in real fast. CO2 moves quickly. The biggest thing is what a lot of things are being missed is on the electrical side, you know, getting, checking all those pressure transistors, temperature rows, how to do it fast, effectively, how to get oil in there.
• 2:40
  We're going to be diving into the different ways, a different way. The oil manufacturer, the manufacturers do it and the steps. You know, step by step, do you pump it in, do you pour it in? You know, how do you pump it in? Oh, well, that could be 1400 PSI, but if it's on a startup, it shouldn't be. Well, what do you do?
• 2:41
  Well, we need over 150 pounds. Well, I get 150 pounds, but how do I move it from the oil reservoir to the compressors? What's the steps? How do I, I do that step by step. So we'll talk about that in that program. I, you know, I love this stuff. I love sharing knowledge. Hopefully this has been helpful for you.
• 2:42
  Once again, if you know more people that want to learn. And grow in the supermarket side and send them, send them our way. Cause we really want to, to really help help you guys out there and help them out there, because this is important. It's important to me to make sure that you as a technician out there, feel confident if you're a business owner, or if you have technicians out there or you have, you know, you're doing it yourself.
• 2:43
  I want you to feel confident. Cause I know it took me too long to be a good technician. I'm a, I am a good technician now. I know. I'm doing, I just built a chiller course with one of my, some of my good friends and I. They're like, you're like an expert on it already. And I spent four hours doing, building a course on it, had the electrical wiring diagrams, they took pictures of every component for me.
• 2:44
  And they also took the PNID. I had those three things. I built a whole course. On it and with their manual and they're like, man, this, this is game changing. This is game changing for all our customers now because it's simple to the point and step by step. How do you do it? Where do you put your meter?
• 2:45
  Why do you put it there? And you got to think about okay Well, if I put it here the compressors run at this speed, what should that actually be? What volts should be coming out of there? What, you know, should it be at sixth DC, a false DC 10? What's supposed to be happening? Is this valve, how many steps are in this valve?
• 2:46
  Why, why is it that many steps versus this valve? How's it modulating? What is telling them to, and it was like, man, this is this amazing. They were like, we should, we wish we would do this a long time ago because this helps. And once again, you're here tonight. This is one time you got to hear stuff seven to 11 times.
• 2:47
  I'm saying the same things all the time, over and over again. And you know, this is what you need to train out there. It might feel repetitive to you, but it's new to somebody else. And that's how you get better.