Latest / The Refrigeration Mentor Podcast / Episode 203. Supermarket Refrigeration Service Tech Tips with Andrew Freeburg

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Episode 203. Supermarket Refrigeration Service Tech Tips with Andrew Freeburg · The Refrigeration Mentor Podcast

• 0:00
  Andrew: You could go in and change anything you, yep, it's bad, but the why it went bad? That's what makes you really stand out. If you could figure out, this is why my compressor went bad. Boom, you're on the road to success.
• 0:01
  Trevor: Welcome to the refrigeration mentor podcast. I'm your host, Trevor Matthews as a former technician turned entrepreneur.
• 0:02
  My goal is to really help train you, educate you and mentor you in the commercial refrigeration industry. Each week, I'm going to have top guests from technicians. Manufacturers to experts around the world to really help us grow and learn together by sharing their knowledge in commercial refrigeration, commercial HVAC, and not only on the technical side, but really the professional and the personal development side as well.
• 0:03
  I'm really excited that you're here. Now let's get a conversation going.
• 0:04
  Hey, I want to take a minute to talk about my upcoming programs. There's so many great things happen at refrigeration mentor. We got awesome compressor programs. We've got awesome supermarket programs and signature CO2 program. These are game changing. These are getting the results you're looking for.
• 0:05
  When you take these programs, you're going to be able to start implementing and applying the things that we talk about in these programs, really helping your customer out, helping your. Business out and helping yourself out by having that confidence, be able to finish jobs quicker, troubleshoot faster, reduced callbacks.
• 0:06
  This is going to help you get to your next level. It's going to get you the results. I look forward to seeing you in these programs, head to the refrigeration mentor. com website and check out the courses page, because this is where you're going to take yourself to the next level and becoming that elite technician.
• 0:07
  So today we are going to be diving into some supermarket service tech tips. So I got my good friend, Andrew Freeberg here with me, who is a stellar technician educator, and he's out in the field now too, and we're going to be talking about some service. Tech tips. Cause we really want to help the industry out there.
• 0:08
  People that are new or getting in to start to the service, as well as people who have been doing service for a long time and maybe need some, some kick in the butt, you know what I mean? Because we all need that once in a while, you know, just to straighten us out because sometimes day in day out, it just, it feels like the same thing.
• 0:09
  And sometimes it's just that one conversation that you need to get your rate back on track. So thank you everyone. And welcome Andrew to, uh, the super, uh, supermarket service tech tips. How are you doing, Andrew?
• 0:10
  Andrew: I'm doing great. Thank you for having me be a part of this podcast. I'm super excited to be here.
• 0:11
  So I very, very appreciate it.
• 0:12
  Trevor: Okay. So what really, where I want to start off with is first, all of you that are on here is kind of think if you're in service right now or any job that you do, think, think about what your process is. You get that call from dispatch or service manager, you get your service tickets the day before what you got to go to do the next day.
• 0:13
  So I want you to think right now about, about that journey. So when you get that service ticket, going to the site, what's your process in there? Because I think this is the number one thing if you can tackle. Getting your, your process in place on any service call on any server. It doesn't matter what the service call.
• 0:14
  It could be drains. It could be electrical. It could be airflow. It could be refrigerant. It doesn't really matter. But if you have that process in place correctly, your service calls are going to, you're going to troubleshoot them quicker and you're going to solve them faster. Hands down. Cause I know I've done it that way.
• 0:15
  I used to shoot by the hip all the time and start in different places. And I wasn't organized with my top, my thoughts and my processes, Andrew, do you want to kind of talk a little bit about the way you take on a service call when you get that service ticket and how your processes work and play out?
• 0:16
  Andrew: Yeah. Um, so when I first get the call, I, of course I get it through dispatch and, uh, they send me wherever I need to go. So I go to the job site. If I do need to call beforehand, let them know that I'm on my way. If, especially if it's like an emergency situation, I let them know, Hey, I'm 30 minutes out an hour out or whatever it may be to get to the job site.
• 0:17
  Once I do get to the job site, I connect with the manager or whoever's in charge. Let them know I'm here and see what the situation is. Just the communication part goes a long way with these, uh, service managers or not service managers. Uh, Uh, department managers and talk to them and listen to what they have to say, because sometimes they might tell you exactly what's wrong with it before you even have to, you know, open up a panel.
• 0:18
  So just listening and, uh, to the customer is going to take you a long way into diagnosing what's going on.
• 0:19
  Trevor: I think that's huge right there, because that's something that I didn't really do that great when I first started out, because nobody really guided me on, on what I should be saying. And we're usually learning this as we go.
• 0:20
  You know, here's the keys. You're out in the field and you've got to start figuring it out. You know, if you have any questions, just call me and that's there. And the thing is though, is like, what are those questions to ask? And that, that's the big thing. So let's take an example. Let's try to make it a real example.
• 0:21
  Let's talk about, just say it is a, it's a deli case. Okay, the deli case is warming up and you get the call you get is that from dispatchers like they got a deli case warm. They didn't give me any more information than that. What would be some of the questions you would ask that deli manager or the person that works in that area, Andrew?
• 0:22
  Andrew: Perfect. So, of course, I'll go talk to the manager if he has any clue or he just might send me to the deli manager. So I'll go whoever is going to be the most knowledge on that, I guess, of what's going on. Talk to them. Talk to them first, see what's going on, how long has it been, uh, what was the temps before, uh, what, have you heard any noises or different, uh, sounds, um, just give me what, what changed, and that will guide you.
• 0:23
  It could be as simple as a noise happening or all of a sudden it was working. They heard a pop boom It could be a direct report right there, you know, just any of that extra information is going to help you diagnose Uh what the issue is faster?
• 0:24
  Trevor: Yeah 100 percent because you don't want to just start going and tearing open a case, you know Without talking to anyone because i've done it before where I opened up a case and started getting in It wasn't even the case.
• 0:25
  That was the issue. You know what I mean? This happens, you know, it happened it happened You get you have that conversation And as a service technician, as you get more experience, you start to hear a lot of things and see things, you know, the first step is like, hey, they talk about this case. If you hear ting, ting, ting, ting, ting, ting, ting, ting, or like it's hitting water, you understand, well, that case probably has a plug drain right off the bat, you know, when you hear something like that, or if it's hitting ice, but that coil might be growing ice and it's, you know, it's, it's the fans hitting it.
• 0:26
  Okay. So we talked to the deli manager. They say, okay, well, we think it's warming up. We heard, uh, a pop just say just like, that was a good example. You heard a big pop. And so that that's it with the conversation. What would be your next step, Andrew? Um, in this journey to solve this problem?
• 0:27
  Andrew: Yeah, I would, uh, do a visual inspection now go into the case or the walk in or whatever.
• 0:28
  I'm thinking walk in here. I would go walk in and just do a visual inspection. Um, if the fans are not running, I would be asking why. Typically, those fans are running unless it's defrosting. Of course, it's all different. If it's electric, hot gas, I mean, that will shut off. But that would be my next one. But if you got two evaporators, one fan's on, one fan's not, I mean, there you go.
• 0:29
  There's a huge indicator right there. Your problem is somewhere in that vicinity.
• 0:30
  Trevor: That's a great point. This is visual using your visual, uh, in it, not, there's no tools even out yet. Andrew doesn't even have any tools out yet. He's going and doing an inspection because that's another thing that I see newer people as well as I did is I fill my bag up, I'll have my bag.
• 0:31
  I'll be carrying all my bags into the service call and that's, you're not at that point yet. You know, bringing all your tools in it. And I believe, and maybe you, I never asked you this before, Andrew, I'd have, uh, as I, my career progressed, I'd have different tool bags. I'd have my service tool bag with light amount of tools.
• 0:32
  And then I'd have my install box and different things for different situations. So I wasn't carrying 150 pounds and I, it took me a couple of years to realize that honestly, a couple of years, I was always carrying these big bags and you don't need that when you're starting out a service.
• 0:33
  Andrew: Yeah, I totally agree.
• 0:34
  Um, when I first started, I carried every single tool I could possibly carry out into my, my first job site. As I got going, I go, man, my back's kind of hurting. And I know why, cause I'm carrying 150 pounds worth of tools. Uh, and I only need, you know, the basic tools just to diagnose. So then I, now I got this little, it's called an electrical pouch, but man, it's, it has like three.
• 0:35
  Ouches in it, but it has everything I need to diagnose. If I need more than that, I just walk out to the van, grab what I need, and then come back and do the service call.
• 0:36
  Trevor: Yeah. But before you even get to that, you, we, we went in, we talked to that, that deli manager, we went in and we seen the walk in box. We seen that there are some fans out in one versus the other.
• 0:37
  What is your next steps now, Andrew?
• 0:38
  Andrew: Um, at that, at that point, uh, after my visual inspections, that's when I get the tools out. Um, if there's that pop sound, if there isn't a pop sound and they just have a fan out. Then I would, yeah, I mean, you're, you're at, at the point where you have to pull your tools. I mean, you can go to the graphs on the E2 or whatever type of, um, controller you have and see if you can graph it.
• 0:39
  You could exactly figure out when that temperature increases that, uh, but at that moment in time, it's time to get your tools out and just, again, visual though, uh, you know, the customer heard a pop. I'll be looking, taking off, uh, where the electrical comes into that walk in evaporator, take off that side, and look for, uh, a pop sounds like it's a short.
• 0:40
  So I'll be looking for any burnt mark, electrical burnt marks, um, in that. And if you don't see it there, um, then I would, uh, You know, start taking off J boxes just located right there. I've seen a bunch in the J box or on the actual side where the electrical panels.
• 0:41
  Trevor: The big thing is Andrew, is that you need to understand that the electrical circuit itself, you know what I mean?
• 0:42
  So there's different components that, that would, could be involved, not only the power to those electrical moment, but also the control of them. Do you want to talk about that? And you might've been just to jump up into that, but what, Understanding all the different wires and all the different sequences to turn those motors on and off are very, very important.
• 0:43
  Andrew: Yeah, order of operation is key. If you guys could understand the order of operation of how that system works, you guys could probably get 99 percent of all the problems done. But the, the key is to find out or know that order of operation. Um, when I first started, of course, you're, you're just getting into the field, you'd, you just know that the fan should be running, but you don't know what controls it, how it turns on, why it shuts off, All that is a process.
• 0:44
  And that's that order of operation that I'm talking about. If you know that man, your skill level is going to increase tremendously.
• 0:45
  Trevor: Yeah. So you pulled off the J box, you checked that you didn't really find anything there. Uh, what else would you be checking that, that it could be?
• 0:46
  Andrew: Uh, so when I, So visual inspection didn't see nothing.
• 0:47
  Um, we obviously have a breaker tripped. Uh, well, I guess it's not obviously, yeah, that's right. So it's hard to say, uh, I would look at the wires going in. They're going to be parallel. Um, so I'll be looking inside the actual, uh, where the evaporator is at, where the fan motors are connected to, and looking at that, sometimes those clips fall off or vibrate for, you know, just didn't get installed right.
• 0:48
  And it could be where it kind of rubbed on that part. And eventually shorted itself out.
• 0:49
  Trevor: And there's a lot of things. And this is where wiring diagrams are so important. A lot of people say, well, there's no wiring diagrams at the store. I've never seen a wiring diagram in a supermarket before that's unheard of.
• 0:50
  Well, there are somewhere someone, unless there was a Reno, don't get me wrong. If there was a Reno, things could have changed. Then you have to trace it out, but you got to get into the wiring diagrams of that system there. It is somewhere, especially control side. Cause right now. Those fans potentially could still be off because a relay on a board, a control board won't open or close.
• 0:51
  Maybe all of a sudden it's supposed to close at a certain set point, but it's stuck open because that, uh, that point failed on a board. Have you ever seen that before, Andrew?
• 0:52
  Andrew: Oh, yeah. I've seen where the contacts on him, Brian, I had to move a board point over. I seen where the fuses will blow that little, a little two amp fuse, or I think it's two, two and a half amp fuse.
• 0:53
  That that will go and you're searching for that other side of power. And it happens to be right. Not even in the machine, or excuse me, not even in the evaporator, but all the way back to the machine room. So again, In that order of operations, you know, where do you get your power from the beginning and then just start going down the line and seeing where it's open.
• 0:54
  Trevor: And that's the big thing is we, we need to understand how to use our meters better and what you're looking for. The first thing, like Andrew said, you got to understand that sequence. When do those fans turn on and off? For this example, is there a door switch for an example on this one? This is a deli. So It's probably medium temp.
• 0:55
  There may or may not be a door switch. Probably not. But those fans are supposed to be running all the time. Are they not running all the time? What is turning them on and off? Is it that controller? Um, so we checked it. We looked at the electrical, if it's a one 20, two, three, whatever the voltage is coming in for those motors, we're looking at the control.
• 0:56
  That could be 24 volts that, that, that is coming into the contactor to pull into contactors for the fans or not. What else could it, could you look for or try to look for when you're on this specific call, um, for the fans being out?
• 0:57
  Andrew: Um, well, if you're struggling, I just want to kind of go back a little bit.
• 0:58
  Um, if you're struggling trying to figure out how it's wired. Uh, usually you could, uh, go to the manufacturer and pull up their website and put in the model serial number of it. And you can probably pop up almost all, uh, of their information, unless it's an old, older. You could also go that help diagnose what's going on, help you, you know, succeed in what's happening.
• 0:59
  Uh, just going back, um, now at this point, if I do a visual inspection, I'm going to check power, make sure I have my one 20 or two or eight or whatever it is to my motors. If I don't, then I know I'm looking somewhere. If I do motors, aren't turning, guess what? My motors are bad. You know, that's, that's just where it's at, you know?
• 1:00
  Trevor: And Cory threw in the chat exactly what you just said there. Most case manufacturers will have electrical schematics on their spec sheet online. So it's spot on Cory. Great job. So we check that you find out in the motors and so that that's a service call So you what you do is you got to get the model serial number You got to call your supply house You've got to order one up or whatever You got to realize you got to figure out how much is going to how long it's going to take you Understanding how to write up the report is really, really good.
• 1:01
  I think that's probably one of the most important things as a service technician. If you are proficient writing up that service ticket, you can go so far within this industry properly, right? So anyone can look at it and understand the work you did, how long it took, why it took you that long, all the different parts and everybody's getting paid.
• 1:02
  And charge accordingly.
• 1:03
  Andrew: Yeah, I agree with that. Uh, on your invoice or however you are going to, uh, make it justified for your hours, uh, make model series number of the, of the, the, the unit that you're working on the location. Um, if it's the deli walk in or if it's a dairy walk in or whatever it may be, if it's case number five on, uh, number two, You know, uh, B five B just make it known exactly where you're at.
• 1:04
  And that really goes a long way. And then actually describe what you did. Customers want to know what you did and why it took so long to do it. So if you just go in, found fan motors bad, and that's all you put. That's that's hard to justify. You spent five hours trying to figure out cause you lost power.
• 1:05
  Or the motors then you had to run and go grab the motors to come back It's really really hard to justify five hours when you just say alt motors are back. So being Detailed in your, um, invoices definitely goes a long way for sure.
• 1:06
  Trevor: Yeah, a hundred percent. And, and be right on it. You know what I mean? Like be accurate.
• 1:07
  Don't make stuff up, say it, write it. Cause this protects you later down the road. If anything does happen, this is what I've done. This is what it looks like. And then it's easy readable. Um, I've got a question in here from earlier. So what we're, I guess we'll be talking about a case here. Do you ever assist the customer with removing product Andrew?
• 1:08
  I'll give my thoughts afterwards.
• 1:09
  Andrew: It depends, uh, on the contract. I mean, really, if, if your contract says that they have to pull, then I would follow that contract because that's what is being paid for. Uh, but I tell you, if I'm going to, if they're telling me that there's going to be 10 minutes to get to it, I'm going to do it.
• 1:10
  I mean, as long as it's just one, one section, if I have to pull the whole case, that's something different. But if it's just getting in where the electrical or the TXV or the EV or whatever component that you need, and you know, it's right there, maybe it's the drains plugged, and you know, the drain is right in the center of the case, and you know, you can get to it just by removing one, you know, pan.
• 1:11
  Yeah, I'm going to do.
• 1:12
  Trevor: Yeah, but I like what you said. It depends, you know, if you've got a good relationship with a customer, it depends because if you work with a big company or a small company and you just working with this one small market retailer, um, maybe that's, that's part of the, the contract, you're like, I'll go in and I'll pull this quickly for you.
• 1:13
  So I can get to that TX valve to clean the screen if it's a plug screen or, or look at the fan, but there's other ones where you're not going to pull it because that's, that's not. That's part of the contract as well as part of, you know, that relationship you build with the customer. And I pulled lots of cases before, uh, tons and tons and tons, especially on call.
• 1:14
  Cause I'm out there on call. I want to just get a fix and I want to get home. And I don't want to wait 40 minutes for someone that, for them to find someone to pull it. Cause sometimes it's not, it's not their problem. Everyone has roles and jobs at the supermarket. So it's like, It's like, all of a sudden you're on a job and someone says, okay, you got to leave that job and go over here while you're working on this job and go do something else and then come back to it.
• 1:15
  So you got to respect their time as well, because they don't always have people just to go and pull it. So always be, um, have some empathy for, for the story you're working on, but understand that it's not. The different role, uh, the roles in that. So that's one case. Let's talk about a lot of people talk about controls.
• 1:16
  You know what I mean? Um, there's so many different controls. I struggle with controls, but out of all the calls that you do, because you do lots of service calls, Andrew, everyone, are you, is it a control issue? You know what I mean? Are you changing boards or you have to program a controller, like a micro thermal Dan Foss, because this is what the kind of, I see people talk about the industry and people worry about, worry about the controls, but how many service calls a week do you get, that's actually a control issue, Andrew?
• 1:17
  Andrew: It's, you know, maybe one or two, uh, it really isn't the controls that Typically go bad. I'm not saying of course, it's never that
• 1:18
  Trevor: for sure.
• 1:19
  Andrew: Yeah. I mean, most of the time it's not the controls. It's it's, it's rare that something to do with the controls are bad. Um, if it is something to do with a control, it's typically not the control itself, but it could be a pressure transducer that's reading wrong.
• 1:20
  Or a thermostat that's reading a different temperature than what it is, but that's not the programming. Yes, it's part of the control, but it's not the actual programming of the device. Bad motors, you know, plug drains, um, and then, of course, it's the time. Why did it go bad, right? It's not just go in there, fix it, and then replace and leave.
• 1:21
  Now, let's just figure out what took it out. That's, that's always the next step. Part of your career there is figuring out why it went bad. Not just replace.
• 1:22
  Trevor: Yeah. And we got a comment in here first, uh, first confirmed with the store management, if they are okay with touching the product. So that that's good.
• 1:23
  So a hundred percent, I really think that, uh, controls is something part of our lives. You know, if you want to get better at it, just start learning them yourself. Don't wait for anybody else to try to teach you them. Um, but it's something that is not an issue as much as people think it is. Kind of like Andrew said, there will be calls with controllers.
• 1:24
  Okay. Cause you got alarms on them. You want to check them for trend graphs. What are, what do you use? Uh, The controls for when you're doing a service call, Andrew, what are some of the tips that technician could use their control for? Because there's lots of things you should be looking at before you start touching stuff through the control, I'm sure.
• 1:25
  Andrew: Um, so if I have something to do with like a control that I think is bad, I would look at the history. For instance, I had a call, um, yesterday and what happened was the customer wanted to change the temperature of the lineup. And, uh, they had ice cream in there, so they got rid of the ice cream and put just frozen food in there.
• 1:26
  Well, you don't need to pull down to negative, you know, 15 degrees anymore. All you really need is about negative five ish, you know, five to zero degrees to have that product maintained. Well, they changed the temp, but what did they forget to do? They forgot to change the alarms on it. So now we're, I mean, the alarms is set at zero and it was set at negative two, I believe.
• 1:27
  So anytime a door opens or whatever rush of heat goes in and it trips the alarm, and then we're getting these nuisance, really alarm calls because of that. So just stuff like that. So figuring out what happened or any changes is the key to that. Typically when you set. A system controls wise, you don't have to change it, right?
• 1:28
  That's the best part about it. Once it's set, it's set. You don't have to go in and change things unless you're trying to fine tune it. Of course, you know, different scenarios also, but, uh, if it's been in the store for months, two months, three months, years, five years, don't change it unless, you know, like that scenario that I told you,
• 1:29
  Trevor: Yeah, exactly.
• 1:30
  Cause I've seen that, seen that lots of times I've even did it. You know what I mean? Going and replacing something and it doesn't need to be replaced. It's kind of trial by error. And sometimes you have to do that. Sometimes you have to replace a part to figure out something else is broken. A good example would be say, uh, uh, condensing, you know, we'll talk about a walk in box, the compressor fails.
• 1:31
  So you can't start the system up until that compressor starts up again. But actually it was the TX valve that caused the compressor failure. But until you start up that system, you don't know it's a TX valve. So this is sometimes in situations where you do have to replace a part. Don't be a part changer, find the root cause and fix the problem the first time.
• 1:32
  Andrew: Yeah, absolutely. I second that, you know, it's, you could go in and change anything. Yep. It's bad, but the why it went bad. That's what makes you really stand out. If you could figure out, this is why my compressor went bad. Boom. You're already, you're, you're on the road to success.
• 1:33
  Trevor: No, exactly. Larry, do you want to offer some advice on controls?
• 1:34
  Larry is a controls expert.
• 1:35
  Guest: Thank you. Um, one of the things that I tell, especially new guys, when they're trying to troubleshoot something. Is use the rule divide and conquer always try and split what you're doing into two Camps to take which direction the first thing I always tell them is is it mechanical or is it control?
• 1:36
  So one of the things I would do is if you're not sure if it's a mechanical or a control issue Most times, there is a, especially if you're talking about something that's simple, something that's running, a motor, a compressor, something like that, you have an override switch for the relay point. You can close that override switch and see if it runs.
• 1:37
  Trevor: If
• 1:38
  Guest: it does run, then it very well could be a control issue, and you've split it off already. And if it doesn't run, and your fuse in the board isn't blown, you have, um, Most likely it's electrical slash mechanical. So it takes you in that direction and then you can try and determine, well, do I have power to my solenoid, my compressor, whatever, and it's not working or do I not have power?
• 1:39
  So that divides it again. It takes you in another direction. But as far as controls go more often than not, just real quick for the, especially for the new guys, It's usually only two things, most likely, with controls. It's either a bad sensor or a bad transducer. And that doesn't necessarily mean they've failed.
• 1:40
  That means they're not reading what they should. Because if you have a sensor that's reading too cold, now your product is going to be warm, but you're going to look at it and everything looks great. Well, my sensor says it's minus five, but actually the sensor is sending back a voltage. That's comparable to plus 20, and that's why the case is warm.
• 1:41
  So, controls wise, it's almost like Andrew says, it's almost never the program, and it's typically only two things. It's a transducer or a sensor. And once again, if you divide and conquer, you look at your sensor. Well, it reads minus 5. Put your probe in the case. Well, it reads plus 20. Could be the sensor.
• 1:42
  Trevor: Like Andrew mentioned too on the transducers, and it's very important. You got to verify this stuff. This is why we have tools. This is why we have gauges. This is why we have, uh, meters. You got to bring them out and don't always rely on the controller itself. It's a great starting point, but that controller could just say, Oh, it's saying minus five, but really it's not just like Larry said, it could be a different temperature down and there could be an issue in the wire.
• 1:43
  Yeah. Could be getting electrical interference by something. There is a lot and a lot to do, but it's so important to take your time to understand this. And I like splitting it down, kind of like Larry said, especially like what Andrew said, you've got to take a systematic approach on every troubleshooting call.
• 1:44
  You've got to document this stuff. And this is kind of like the service calls. When you start to write this stuff down, then it's going to get easier. You're going to be like, this call is the same as this calls this call. And then you can start like. You'll start remembering them. Then you don't have to write them down as mine.
• 1:45
  And I still recommend doing it. Having a journal. Well, why would I have a journal? I had a journal, which is a pocket flip pad, and I could flip through it. I remember years. I'd have a stack, a little things, and I could go through and find a mall number or something that I need. That was actually my journal.
• 1:46
  When I look back now, my little notepad in my pocket, that was my journal. Cause I'd write lots of tips and things that I was doing in there that I don't, wouldn't always remember. So always, always journal on some of the stuff and it's going to make you better. Don't think it's stupid. It's going to make you better because you'll look back and you'll read and be like, holy smokes.
• 1:47
  I learned a lot this year. Look at all this stuff. You know, I learned a lot. And Andrew, any final thoughts? We've got a couple of minutes left here. Some other tips as a service technician in the supermarket space.
• 1:48
  Andrew: Yeah. When I first started, I was kind of lost. I didn't have, uh, I didn't know what to do.
• 1:49
  Finding a mentor, somebody that could actually help you out through the process is really going to Excel your career. That's something I wish I had, uh, more of, but you got, I'm You got to kind of ask for it. You can't just expect people to just show up and not, and help you out. You're going to have to ask.
• 1:50
  Uh, another thing is you have an hour on that service call to figure it out. If you get to a point where you don't know what you're doing and you're just totally lost, call somebody. You're just spending bills and let's, let's get, let's get you some help. Um, that's another big thing. Um, and a checklist. Um, I, uh, started when I first started was I created a checklist.
• 1:51
  Anytime I started asking for help. Um, I came into a scenario and I had no idea. And I would call when my lead or my, uh, boss would say, Hey, to have you check, you know, pressures, what is your amp draw? And so I started making a checklist of what, what I should know. Okay. So when they asked me, I already had it down, you know what I mean?
• 1:52
  So if they asked me after all, I got it. And they asked me how much AmpDraw is good AmpDraw. I have it. How much, uh, what's my power check, my voltage imbalance, you know, anything what they asked, I had that answer already for them. And then 95 percent of the time we could fix it right over the phone because I already had all those answers.
• 1:53
  And an hour I had my whole checklist done 5 percent of the time. Of course, they're like, well, I don't know. I'm going to have to come down and help you. Which, you know, that's a win, right? So that's how I did it when I first started out.
• 1:54
  Trevor: Yeah, and I love that too. If you get 45 minutes an hour and you don't know what to do, you got to make that phone call because you should have all the pressures.
• 1:55
  Don't say it's good. I say this time and time again on the podcast. Don't say it's good because that means nothing to me and any refrigeration professional. What is the temperature? What is the pressures? What does it look like? Are the fans running? Is there airflow? Is there lights on? Have all that information and it's going to make your life so much easier once again Thank you for taking the time to come and hang out with andrew and myself talking about some service tech tips I've got many more of these programs coming up over the next few weeks Uh, there's one coming up on friday a couple a couple weeks.
• 1:56
  We've got a supermarket Training program coming up in May. I highly recommend if you're looking to dive deep on, on your supermarket troubleshooting skills service and maintenance system, you're going to want to check that one out may head to the refrigeration mentor. com website to look for for that.
• 1:57
  Also on the website, there's going to be a free compressor and service troubleshooting guide. If you don't have that already. Definitely get it dives in on showing you how to properly inspect and look at systems going to help you grow there Uh, I love it. There was one more question here Um, if the compressor's defrost is a possible the oil pressure control will trip or the oil switch Um Is it because the compressor is not running in defrost?
• 1:58
  Well, depending on the oil switch, most likely like a Sintronic, those Danfoss pens, when the compressor shuts off, the power to it shuts off, it's not going to trip it. It'll start back up in a run. Um, so usually that, that shouldn't be causing a trip. It's something else that would be causing that oil pressure trip.
• 1:59
  The Corsense for examples, uh, Corsense, uh, protection, uh, one, uh, Copeland has under semi harmonics, that one there's always powered up. So that one will always be powered up, but inside the controls, it knows when the compressor is off. So it doesn't, it won't send a low pressure alarm if that's the controller on there, but, uh, once it's something that you want to dive into, uh, is that wired up, right?
• 2:00
  That, uh, oil level switch. Hopefully that helps Andrew. Thank you so much for taking the time. Everyone, thank you for taking the time to hang out with us and we'll see you at the next Refrigeration Mentor podcast. See everyone. I want to thank you so much for hanging out with me and the Refrigeration Mentor podcast.
• 2:01
  If you enjoyed this episode, please leave a comment. Let me know what were your key highlights. What you took away from myself or my guests, as well as if you have not subscribed yet, head over to Apple podcasts or Spotify and subscribe. And if you enjoyed this episode, please share it with a friend. Let your friends know that there are people who care, who want to share the refrigeration information with you.
• 2:02
  To help them get to the next level in their career. If you have not been to the refrigeration mentor website@refrigerationmentor.com, go check it out. There's a ton more guest podcasts I've been on as well as the event page. Check out the events page because there's a lot more free trainings, as well as paid training to really help you grow your knowledge base.
• 2:03
  Super excited. Can't wait to see you at the next Refrigeration Enter podcast. Let's get a conversation going.