Episode 261. Supermarket Case Controller Troubleshooting Tips

If you're listening on the podcast leave a comment. This is what we're looking for. We're looking to help grow your knowledge and grow the industry. Check out our youtube channel at the end of this. I want to talk to you about some of our upcoming programs so hang tight when we get to the end YouTube, LinkedIn, Instagram, Tik TOK, Facebook Apple, all of it. We're out there. We're going to get into some case troubleshooting.

. So I was out at a field startup with hill Phoenix back earlier in the year. A good friend, Paul Bennett, this guy's an expert in the field. But every time we chat, it's a refrigeration conversation on technical tips on how we can get better.

Quicker, faster, how we can help teach industry. It does take time because it can be intimidating. I know you walk into a new store. You never been before you open up a panel and you see a bunch of these Dick seller, they're changed to Copeland now controllers. XM 679. Okay. These ones here are pulse with modulation.

One, the six 78s is their stepper motor. I used to work for Copeland three or four years ago and I was their national trainer. So I go around the country training, this stuff going around training and compressors going around training CO2. So I've been training supermarket stuff for over 10, almost 10 years now.

And I've been taught by some of the best, but I was down at the site with Paul doing the startup, because I want to be, I want to make sure I know what's continuing to grow the technology. It hasn't happened. I've been with other manufacturers out in the field during the startup. Nobody's paying me to be out there.

No one was paying me that I want to be there because I need to learn because I want to make sure when I'm training and doing a training just like this for you, that I'm accurate. And if I don't have the answer, I got to go find it. You gotta be curious out there. First time, maybe looking at a case control like this can be intimidating, but you know what it's doing the same thing as that old system you were doing only was more arcaded on pressure controls and mechanical TX valves.

100%. I know all of you that are here today, all of you that are listening, when you start working on CO2 systems in supermarket, if you're doing supermarket, you are not going to want to go back and work in HFC system. You're not, I've talked, I trained hundreds, thousands of people. I've trained on CO2 already.

And those are the ones that are starting working on CO2 daily. They do not wanna go back to work on HFC. It's all controlled. You can re trend graphs, you can get a better understanding of what the system's going. We are learning better now than we did 15 years ago. We didn't have what we, what's going on today? Right now? You hanging out here with us?

So when I was down there with Paul, we were hanging out there chatting and learning. One of the biggest steps that you need to take is you need to get into the wiring diagrams and the piping diagrams.

Just like I talked about last night, I had a, a chiller training with a, a good a I partnered with a, a great company pro chiller. If you know who they are, you go check them out. These guys are rock stars in the chiller industry, but we're, we're doing a training, training together and man. Walking through their wiring diagram, step by step with the components, step by step with their controller, hands down, we troubleshooting.

This stuff is like, awesome. The technicians, you can see the light bulbs going on and there's a lot of smart technicians that work on their equipment that, that, that was in this group, I think there's 20, 25 technicians in that group, and these guys were answering the questions, talking about flow curves and system curves, you know, cause chillers are a little bit different, but you guys work on that stuff.

You know, you're working on secondary systems, you're working on glycol system. So you're going to understand and learn this stuff. And so when, when we're hanging out here, the steps that we walked through, and this is what Paul says, when you're doing a startup, you got to take your time and do it step by step.

You got to check every wire. You got to verify what the manufacturer has done, and you got to check the programming. One of the things Kevin said today is like, if you can get the programming upfront. And then go program everything first, before you start to, you know, before anything, if you can get in there as a startup and get a program, great, but just say it does get started up and it is running and it's running great.

And then you run it, you, you are a service technician and you get a call. Well, what do you, what do you need to do? You know, what, what do you need to do? Well, you got to figure out what's that problem. What's the problem happening? And we know most of the time, most of the time. It's not something that's catastrophic frozen up coil, plug, drain, dirty coil, plug honeycombs that in the list goes on on these basic calls.

It's not okay. Well, it's the PNID is all messed up. So we've got to go play around with that. It's the controller algorithms all messed up on the E2, the RDM, the corral, whatever it is, it's all messed up. No, it's usually something that is. In the fundamentals and don't lose that always go back to the fundamentals because if you don't You get pigeonholed and you're looking around for stuff that it's not even the thing And with case controllers, it's just reading a wiring diagram the first step.

So you got to get into the manual Okay getting into the manual, but if you don't have the man you get the wiring diagram you start there So as you can see, let me just pull out this laser pointer for those who are watching right now Okay. So right up top there in the top left of the wiring diagram so if I get my meter. I come down, here's my black.

So we know this is our voltage coming down our power in, okay. Depending if it's this one here, I believe is a one 20 controller. I should, I should double check. I can't remember, but I'm pretty sure this is a one 20 coming in because you would have to check on the other page. So this is coming in down through here, through a two amp fuse.

And then here's my power going through here. Okay. Through all this here, here we go. That's our power in to our different switches. Okay. And you see, we got on this one here, we got the defrost tied in. We got the fans tied in. We get the voltage of one 20. So right here, it says one 20 on the controller, and then we got a valve one 20 for the valve.

So the way the valve works, if you took your meter and you went on went on to the solenoid right here. So this one's a Danfoss valve and you went across there all of a sudden you'd see one 24 because this I can't remember what, how many seconds cycles this is, it could be a six second cycle. I can't remember if it's the same as the 500.

Hey, I just don't not remember off the top of my head. They've the six second cycle. You'll see power for, and it's 50%. You'll see power for three seconds. Then you won't see power. So it's like pulse in that valve. Okay. So, and that's going to pulse depending on what your suction. Transducer and temperature prober does that make sense?

Okay, so you get your your your meter in there. Do I got 120? Okay, is my is my fan running you can just go check and you can check right here Is my fan running do I got power to it? I got power to the valve You have different contactors here. Like look we got an evaporator fan contactor. We got a defrost, contact They even had a reheat contactor in this one.

That's what the auxiliary is in Okay, because in in this place you need reheat Could get, get out that moisture. Okay. So what do you do? Like if it goes into defrost, well, really what happens inside the controller at a certain point in a certain time, if it's a real time clock or not, or just eight hour intervals, it's going to go into defrost.

And really what should happen is that you should have your pipe, pipe, pump down cycle that will be in the parameters. So you've got to get in there, you'll get in there by the E2, E3 or a handheld controller, or you could even use Wizmate. I used to use Wizmate a lot back in the day, and then you could go in and then you can see and set this point.

So I got a drip time of five minutes, or depending on how big the coil is, it could be a longer drip time or a shorter drip time. You could have fans on or fans off, depending on the type of defrost. All these different things is programmed in the controller. You need to get in that manual. You're not going to be able to troubleshoot this.

And if anything, at least go to the troubleshooting section, it's so much easier to get information today than ever before, so much easier to get information today to get the manuals where it wasn't easy to get a, I work with some guys from Copeland who were there for like 30 years and they're like, Trevor, do you know, when I was, you know, working and troubleshooting Copeland compressors, when I started out, you know, back in the eighties and the nineties, there was no internet.

I had to send a fax and it will come back maybe a few hours later. And that was it. That was how he was getting manuals, crazy stuff. Now you can just push on your phone guys, and you can get it out here and just look on your phone and start reading it, but you should be doing this outside. Just like you're doing now.

You're investing in yourself right now. You're here watching your, or you're listening, but you're here investing in yourself. You need to do this on a consistent basis and the people around you, you got to get them involved too, because the more of the more of you that are talking refrigeration, pushing each other to the next level in your careers.

You're going to grow faster. You're going to get better jobs. You're going to get better pay. I've been seeing it over the last three years, running for refrigeration mentor, I've seen so many technicians who came into the program, who either got a raise, who moved up in their company or got a better job at a different company.

And this continues to happen because they're putting the work in and just like on these case controllers, it doesn't matter, the brand. They all make pretty good stuff. You're going to have a favorite of one over the other. Some, because you know them a bit more and some that, well, this one, you, you think the functionality is easier for you.

Some have a better front end and some don't. Some are easier to set up and some have more parameters than others, but at the end of the day, they're all doing the same thing. We're trying to remove the certain amount of heat out of product in that display case, in the quickest amount of time. At the highest suction pressure possible.

That's what we're doing. I'm going to see more and more of that. We dive down here. We dive down on the bottom side here. Let's move this around. We got a suction temperature probe. We've got a pressure probe. We've got a, another temperature probe, which is the defrost one. Then we've got a discharge air probe.

So we've got different probes in there on this side. We got our calm loop. So they're using a Modbus RS485. And then a remote display. So right now they got a remote display. You can see on there that they can go and either work on the remote display, set up your address, or you can work on it from, I think it was an E3 there.

They had a couple of E3s at that site. The big thing is one of the things, if you, if you're going to troubleshoot a case controller, before you go in, even into the parameters. You should be going to make sure the fans are running, the lights are on. What is the suction line temperature? What is the liquid line temperature?

Is there airflow happening? That that's stuff that you don't even need to get into the controller for. Step two is my pressure and temperature probes reading accurately. You don't have to even once again, not even in the controller yet. Are they reading accurately? That's step one. And most of the times you're probably going to figure something out there.

Yeah. Alright, a lot of the time could be a pressure transducer that rusted out a bit or get some water in it. It could be a temperature probe that was stretched a little higher too much and then it broke the building. Well, that's a name brand, but the wiring,

super important to take your time on this and just use your meter. The big thing is, is using your meter. Okay, and as you can see here, what's great, you just follow the wiring diagram. So as you can see up top here, We get LC. Oh, sorry. One C black. Well, look one C black right here. And then we got a two C white.

Well, if you look over here, there's a two, two C white. So just follow the wiring diagrams. This is very, very important. When you're following the wiring diagrams, it's going to make your life that much more easier. When we dive into other countries, this is the one that we dove in today. So this was the AKCC 550A by Dan Foss.

Someone told me there's Their app and I remember I had your app download as a cool codes Dan fos, cool Coles, where it'll tell you have all their controllers, all the alarms, their status, and you just go into there and you can find all that stuff, which is super cool. I haven't used that in a while, but cause I'm usually using cool selected to when I'm doing trainings and stuff, if I'm talking Dan fos stuff.

But once again, in here, you gotta understand different controllers have different layouts. Right? So this is a two 30 volt one where. that this AK. AKV valve. The other one was a one 20. This is a two 30. So the same thing you put your meter on there and all of a sudden it goes two 30 volts for three seconds, zero volts for three seconds and on a six seconds cycle, that's 50 percent capacity.

Give or take a little, you know, there's a minute difference is exactly 50%. Some people say, yeah, some people say, no, it's a little off. It doesn't matter to me at the end of the day. Is it making it cycles and do I got a cold suction line? The sensors are up top here. They got their Modbus right here. RS 45, sorry, RS 45.

And then right here is where you would. So you've got a little program key, Dan Foskey. He said it was E C E K one, I think eight, eight, three, but it's no different than the Dick's. If you work on Dick's L they have something called the hockey. So you just plug the hockey. So right over here, so you can stick the hockey in right there.

And then you program one. So if you have a 60 foot lineup, you get one program, you can take this little hot key. You put it in the controller, you press up and you upload that, that parameter on the the case control and then boom, boom, boom, boom. So you, it's so fast for a startup and the most manufacturers have that stuff.

Okay. So it's important to, to do that. A lot of the times, like Kevin was saying, a lot of the times it's the basic issues. Yeah. You know, you do have to get into these manuals and they're thick manuals and they can be painful looking at they're so thick and I, I'll show you one or two but as long as, like I said earlier, as long as you get into the troubleshooting section, when you do have an alarm, because all these little lights on, on there, you'll see the lights in the front of this one.

Okay. You'll see the lights on the other ones. They mean something. Okay. Is it in refrigeration? The fans are running. If it's in a defrost. Here's another controller. This is the CC 200. This is the latest one by Copeland. This has updated. I took a picture. I was at one of their events two years ago. I think hanging out with Brett Cheshire, that guy's an expert.

Once again, another control expert that I learned, I've been learning so much from where we, we dove in this event. He was just talking, walking me through on the set points and setting it up, but it's no different. Look, I got some temperature probes here. They're color coded on these ones, which is pretty cool.

You get over here. Here's our pressure transducer. So this is a a five volt or 12 volt ratio metric. So what you need to do is you need to take your meter and you go from the black to the red lead here, and you should have five volts DC coming out of this. Okay. And then you get from zero, you take your meter and you go from zero to the signal, and that's your feedback signal.

So this is a linear thing. So if your probes are zero to 500 PSI, zero to thousand PSI, whatever it is at zero volts, It'll be zero or five volts. It'll be a 500 or a thousand. There's zero to 0.5 volts to 4.5 volts valves. There's lots of transducers. There's different, there's 12 volts right here, but you gotta get your meter out there and put it on the stuff.

You get it. I say this time and time again in all my trainings is that you gotta be troubleshooting this stuff when it's working properly. So when it's not working properly, you can figure that out and you can figure it out a little bit easier. I'll show you a couple images on that. It's no different.

Like we've got some digital inputs and an analog output. Another pressure probe here, our temperature probes here. You got some auxiliaries that you can play around with. Defrost up here. Very, very similar. Some will have more, some will have less. They'll do floating suction. Most of them. Now we talked a little bit about that today.

Here's another one. Micro thermal. So you might have worked on these. You might not. It doesn't, to me, it doesn't matter and should matter to you. If you walk up and stroll up to it for the very first time, you're not going to know exactly what to do until you get to the manual, until you get to what their sequence of operations is inside that manual, but we all know what it's trying to do.

We know it's trying to pull the heat of the product most efficiently with an electronic expansion belt pulse with modulation or an EEV and you'll be able to tell very easily on looking in the case, which one it is or from the controller, but the same with this. We got our power coming in you got to follow this with the wiring diagram I forgot to put the wiring diagram up beside this one, but you will have wiring diagrams.

You got to utilize those We know wiring diagrams are always in the de energized position when they are energized Everything switches, right? So if your contactor the coil of a relay is energized That's going to switch from normally closed and normally open vice versa normally open to normally close You You got to understand those, that you can have fail coils and stuff.

You can have loose connections. You can have hotspots. This is the stuff that you, you know, if you have a loose wire, this is the stuff you want to start looking for visually inspecting these things. And the same thing, you got to get into the manual. You got to get in for these ones here. You got to go in and look, look at it through the micro thermal, see what's going on.

I've done a whole series with Charlie Cunliffe from from micro thermal. That guy, he's, he's an expert. I sat in on tons and tons of his trainings before he's been to some, in some of my classes, training, some of my students, he's just, he's an expert and he cares. Once again, cares about the industry and how to get better and level up.

But we dove into fine tuning micro thermal valves and their, their electronic valve. And so what you do is you go in and you, you go check the trend graphs. So how's it been running? How's the, how much has it been opening? Okay. Has it been opening a hundred percent and all of a sudden it's slamming down, shutting down and opening up and slamming down.

We've got hunting happening. Well, what do you got to do? Well, maybe you don't open to a hundred percent, maybe only open up to 70%. How do you do that? Well, you go in there and there's a base value and you adjust the base value and you adjust the percentage. So if you just say you only need to go to 70 percent and you do a 35 plus a two, which is 70, so you get it to a 70 percent base value.

But you got to get in and play with this stuff and you got to ask someone who's doing it too. Don't be afraid to ask someone, call your controls guy up and all your companies probably have a controls guy, shoot them a message and don't abuse that stuff, but ask them, I've been looking through this manual.

I want to understand how do I set this up? How do I set the drip time? Or how do I get into the certain section? And it's all about playing around. I do playing around controllers. That's how you get better. You're going to make mistakes, but you're going to learn, you got to get into the manual to understand all those parameters, what they do, because if you don't understand a parameter and you change it, it could really affect two or three of the parameters or cause damage to the system.

Talked about this already testing boards. This is a multi flex board. I'm sure lots of you have seen these before anyone here in North America, even though they're, they're, they're. They're, they're out there in the supermarket industry, but once again, you got to get that meter. Just an example of you out in the field with your meter going across the power supply or going across the signal.

So you go from zero right here to five to make sure that we got a five volt signal going in and then our feedback or our signal back here. We want to make sure to find out what it is. Then you put your gauge on that, that section, you go and put your gauge, your, your tester gauge and see if it's actually reading that pressure. Cause it may not be, maybe it's reading the wrong pressure because there's water in it, or it's corroded, or if it's failing

same with temperature probes. You got to get into the temperature probes and understanding there's NTC, negative temperature coefficients. There's different ranges on them. I know you guys know this stuff. This is not the first time you heard about an NTC or a PTC positive temperature coefficient. You can't mix these up.

Some controllers you can go in and you can adjust them so that that probe can be changed and you can pick whatever you want. PT one th thousand and NTC. It's up to you. But I, I remember working with the CPC team one time and they took the guy's name's ev Yvonne, super smart dude outta Quebec, and he took CPC probes, D Excel probes, alco probes spoiling probes.

Dan Phos took all these probes and put them in oven, heated them up and cooled them right down. And we got to check all the curves. And the temperature curves, they were all a lot, a lot of them, you know, we're at the, the 10 K a lot of them were 10 cases. And so I think we put some 86, he put some 86 K in there as well, but most of them were like 10 K sensors.

And so really what that means is they're the same starting point at 77 degrees Fahrenheit, 25 degrees Celsius. And then we cool them off cool them down, heat them up. They were all different. The curves. Because there are different types of sensors. There's like our, I believe it's our one, our two, our three different types of resistors inside.

So some are fast reacting, some are slow reacting. So this is some, something very important. Cause I've had a contractor I was working with. They were doing a bunch of CO2 system and they called me up and they were like, man, the high pressure valve is not working. I was like, did you double check the, the temp, you know, the drop leg sensors, the most important sensor in there, that temperature probe and the drop leg of the gas cooler and the pressure is very important as well, but did you check it?

And well, what happened? Someone put one of these green CPC sensors instead of the Danfoss. Because they were running off an EC. I think there was the ECK 326, one of the original controllers that messes everything up. Don't just mix stuff up, mix and match stuff. Unless you know what you're doing, you got to put the proper set points in.

You got to use the proper transducer or temperature probes. One good thing about, I liked in the micro thermal, you can go and select it and you can select it as a corral or a Danfoss or CPC. And so you can pick the probes. So they have all those different parameters built inside their controller.

Which is really cool. Last thing I want to talk about is relays. You guys probably totally understand relays inside and out, but you see a lot of these inside the units. Okay, the skmt Relays is one that's out there. You want to understand? How they work. Okay. So on this diagram, if you're looking at, you got 13 and 14, that's your coil.

So this is a 24 volt DC coil. So that means you need some DC voltage going in there. So when you get 24 volts DC, what it does, it switches, as you can see right here, here is the switches right over here. See one right here, that's closed. So look, we got normally closed. Look how it's, you see how it's touching and this comes down around here and it goes all the way down to down here where nine is, I got to kind of cover it up.

So when this entered gets energy right here, all of a sudden this coil here pulls this down as armature down and it hits number five now. So now instead of sending it through a nine and one, when we energize it, we're going through nine and five. That's really how to relay work. Most of the time on startup, when I was going through it with Paul, walking through the step by steps, he's like, what happens is sometimes it's so small, so tight, you can put it on the wrong one.

You can put it on the normally open instead of normally closed accidentally. Cause it's so small in there. You tighten your pull and you make sure you pull on those wires. I remember doing tons of electronics trainings where i'd have a group of 10 or 20 people from technicians to engineers to sales reps doing trainings on controllers and I My test would be okay go wire it up Here's the wiring diagram and then after we wire it up, then i'll get you to program it then we'll power it up for afterwards after we check it and then we'll program it Nine times or eight times, at least out of 10, I would go and I'd yank on the, the wires and I'd pull one out and I'm telling you this, and I would tell you, you gotta make sure the they're in there, right?

They're in there tight. And there was so many times time, time again. I know this was a quick, quick session. I hope that was helpful because this is it. This is spending a little bit of time. We spend 30 minutes now, just kind of chatting scene. The next step is going out and doing this in the field. When you see this.

I'd love to see in the chat, what you guys are working on out there for case controllers on our electronics. This is important. You got to understand the components you're working on, because this is the stuff that we talk about in our supermarket Academy, in our CO2 courses, in our supermarket courses, there's a lot of stuff that we dive in a lot deeper.

Hopefully this is inspiring and getting you curious to want to look up some of the manuals. It's It's taking the time to, to go and invest in and learn, learn about that stuff, because if you're not spending the time learning it, it's going to take you a lot longer to figure out the problems.

And then if you want to deep dive into some of the refrigeration mentor stuff, we have a full supermarket Academy. So this is targeting for people who already been on the tools who want to build up a bit more of their confidence.

You know how to do it. Maybe it's a, maybe it's, you know, a reminder of some of the stuff getting into glide and how to troubleshoot a high pressure control. What is a PNID and how do I read it? What is all those components? How do I troubleshoot an OCV? How do I troubleshoot an EPR or a CDS valve? Even some of the stuff tonight, getting into EEV controllers.

How do I troubleshoot that compressor? This is what we talked about in this academy. And I spent a lot of time, like well over a year working on this with troubleshooting guides inside it. I give you kind of like a sneak peek on some of it. Like you can dive in. How do you test an OCV? So walk through a video on testing an OCV.

We get into here and you can see that we dive into secondary fluids. You're going to see more and more of these systems coming out there with all these new rules in North America, especially starting in the U S with the aims act and the snap rule. You might not have heard this stuff because you know, you're in the trenches, you're putting out fire.

You're crushing a day in day out, but there's a lot of changes coming out in the industry, right? New refrigerants coming out. You've been seeing four, four, eight, four, four, nine, but they're going away. Right? So one of the, one of the new rules and regulations is coming in is that anything that is above 300 pounds, In a system, which that's what we work on every day, day in and day out has to be lowered in G a 150 GWP global warming potential.

And really it's only CO2 at this point. Okay. So if it's less than 300 GWP, it's like an a one a, a a two L sorry, refrigerant, because they're below 300 GWP, but what does that mean? Well, if I can use below 300 GWP, depending on what state you're in, Canada is not pushing that stuff yet. Okay. Those, those rules and regulations, other countries in Europe, F gas regulations, Australia, pretty sure TAF is pushing that as well.

You're getting to lower GWPs. Like I'll have to check with the TAF guys again, where they're at with that. But what does that mean? Well, now if I can do, if it's below 300 pounds, I can have it on the roof. I can do secondary systems. So have CO2 on the low end pumping CO2 through the system and then have an A2L on the top end, but there's still lots of rules and regulations.

And then we'll see here. So here at the website, show you a couple of programs that we've got coming up. We're running a design program right now. So you, if you still want to get in on system design, if you want to learn that, or, you know, someone who wants to take their career to the next level, we've got a CO2 design course. this is what I love doing. I love sharing this knowledge. I love people who come, who want to learn, who care, who ask questions, who participate.

And even if not, a lot of the, some of the people that, you know, they don't want to ask questions in the sessions, they send me the questions they want to ask and we'll get back to them. We want to help you get to, to your next level. Because I think it's super important to, to get into some of these programs. It keeps you accountable for the things that you're doing as well And I think that's one of the big things some of these customized programs. I got live programs This one here to supermarket academy the second one that one there is all on demand So you can watch that at any time you want And go through and and step by step start to to learn And grow your knowledge at the end of the day.

That's what I want to help you with I want to help you get to the next level in your career Because I I've been working with technicians who want to get up into that leadership role. They want to be a supervisor or they want to get into service manager role. You might not be there yet. I don't know where you're at in your career, but you're not going to be one of, I know this.

You're not going to be one of the slugging compressors when you're 60 years old, because I talked to the guys that are 60 year old. And they're like, I don't want to be slugging compressors anymore. There's a very small portion of guys that are out there that are still doing that. You got to build your skills.

So learn the technical stuff now and then continue to grow because this industry is fun This industry is really fun because there's so much opportunity, especially with all the changes that are happening now and the growth opportunity with CO2, with the new designs and the new development and energy efficient. And this is how you get better. This is, if you want to grow your career, you want to get a, have a better life for your family. You got to invest in your education in learning.

This is how we're going to make the industry better together. And I've seen it time and time again. If you're better at troubleshooting than the next guy, you're going to make more money, or you're going to get a promotion, or you're going to, you're going to get a land, a job at another company that's going to pay you more or want you, but you got to want it.

You can't just come in and say, listen, I, I want the top dollar, and you and I send you out to a CO2 call. You don't know how to troubleshoot it. Or I send you to a call and it takes you three hours to do a 30 minute call. You know, you know your skills. If you can't figure it out in 30 minutes, you gotta make that phone call.

If you don't know if you're, well turn in circles. Cause at 30 to 45 minutes, you should understand what what's happening in that system or have an idea of what's going on. But if you can't figure out the problem, you know, the questions to ask that expert that you're going to call or someone on your team, Hey, I'm on this job site.

I checked this, this, and this, and this, everything's clean. The coils are clean. The fans are all running. The water flows running good. I'm getting this suction, this suction pressure, this suction temperature, this discharge temperature, this discharge thing. Here's my flow curve. Here's my system curve.

This is the voltage. This is the amperage. You get all that stuff. It doesn't take you two hours to get all that information. A lot of the times now you can just go up to the main controller and you can see a lot of this stuff. You got to put the work in you put the work in you're going to be super successful.

Once again, hit refrigerationmentor. com, reach out to me. you want to book a call. And talk to me one on one about these courses. I'm here. No, I want to learn how I can help you. And maybe it's not a course that I have right now. Maybe you want to get into management. We have management course. We've got leadership course. We've got a lot of stuff, different stuff on top of the technical stuff as well. Look forward to seeing you at the next refrigeration mentor training.