The Refrigeration Mentor Podcast

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, we're joined by Refrigeration Mentor Community Ambassador Andrew Freeberg to discuss why we entered the refrigeration trade. On top of the strong pay potential, we uncover what we truly enjoy about the industry, including the daily variety, challenges, problem solving, helping customers and common misconceptions about on-call and working conditions. We also break down why many supermarket refrigeration technicians feel stuck second-guessing on jobs, which drives callbacks, stress, and constant support calls. This is an inspiring conversation for anyone considering getting into supermarket refrigeration or new techs looking to explore the sky high potential of the refrigeration industry. In this episode, we discuss: (03:14) Realities of On-Calls as a Tradesperson (04:43) Payoff and Lifestyle of a Refrigeration Technician (05:15) Why the Work Stays Fun (06:29) Top Advantages of the Refrigeration Trade (07:19) Advice for New Students (08:16) Refrigeration Wages and Career Math (10:33) Overtime (12:12) Travel Anywhere With Skills (15:47) Skills That Will Change Your Life (19:24) Recruiting the Next Generation of Tradespeople (21:34) Second Career Ageism (25:03) Why Refrigeration Matters (29:30) Trade School vs College (30:56) Different Career Avenues in Refrigeration Helpful Links & Resources: Episode 333. Training and Troubleshooting Tips to Level Up Your Career Episode 274. The Biggest Key To Career Success in Refrigeration Episode 256. Career Tips for New Technicians

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, we're joined by Refrigeration Mentor Community Ambassador Andrew Freeburg to discuss how technicians can approach CO2 refrigeration with more confidence, reduce callbacks, and cut troubleshooting time with the right training and mentors. Andrew shares his journey in the trade, including push into CO2, emphasizing persistence, ongoing training, and being vocal with management about career goals. We also cover practical startup and commissioning fundamentals, including using P&IDs, wiring diagrams, I/O schedules, and checklists to identify components. In this episode, we discuss: (01:51) Andrew's CO2 Journey (03:5)1 Learning CO2 Refrigeration Faster (05:13) Refrigeration Startup Checklists (05:44) Sensor Install Best Practices (07:29) Advice for New Techs on CO2 (12:53) Commissioning and VFD Tuning (15:32) Why Ongoing Commissioning Matters (18:13) CO2 Monitoring and Troubleshooting Helpful Links & Resources: Episode 243. Step-By-Step Walkthrough of a CO2 Service Call with Patrick Gregory Episode 227. Getting to Know Transcritical CO2 Supermarket Refrigeration Systems with Kevin Mullis Episode 180: Developing your CO2 Knowledge into Experience

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, we're discussing why capable technicians often freeze when they walk into a supermarket rack room and how that hesitation drives long troubleshooting times, constant support calls, and callbacks. We'll talk about what causes overwhelm from complex rack systems, controls, and newer technologies like CO2, and the important fundamentals that are too often missed. Apprenticeships cover only a fraction of what techs need and that one-off training days aren't enough - the key is consistent, repeatable development paths and training to help technicians build rack specialist skills, reduce callbacks, and improve profitability. In this episode, we cover: (00:48) Why Techs Get Stumped on Service Calls (01:48) Complexity Overload (02:38) Apprenticeship Gaps for Tradespeople (06:39) Refrigeration Glide  (07:17) Hot Gas Defrost (13:32) Tips for Hiring New Refrigeration Techs (16:22) CO2 Trend Graphs (20:23) How to Build and Train Refrigeration Rack Specialists Helpful Links & Resources: Episode 299. Basic Refrigeration 101 Episode 251. Supermarket Refrigeration Service and Troubleshooting Tips Episode 215. Understanding Refrigeration System Controls with Larry Herman of Redline Control Design

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, we're talking with Aria Lucey, whose husband Aiden is a longtime technician and Refrigeration Mentor Community Ambassador, discussing how the demanding refrigeration lifestyle impacts relationships and family. She shares early long-distance relationship stories and long-hour challenges, the need for intentional connection, and the importance of clear, honest communication, rather than assumptions. Aria also shares strategies for handling disagreements, making repairs after conflict, and managing kids while incorporating the demanding, often unpredictable work schedule of a refrigeration technician. In this episode, we cover: (02:49) Long Distance Relationships (05:37) Communication Strategies for Relationships (08:18 Fights with Your Spouse (10:17) Sharing Domestic Respinsibilities (12:33) On-Call Lifestyle for Tradespeople (14:35) Advice For New Relationships (19:58) Balancing Sick Days (25:03) Parental Leave And Family Planning (26:29) Taking Turns Supporting Careers (29:29) Dividing Household Responsibilities (34:51) Explaining On-Call To Kids (37:01) Advice For New Technicians Helpful Links & Resources: Episode 226. How Busy Technicians Can Better Manage Work and Family Life Episode 208. The Personal and Professional Sides of Refrigeration (That You Won't Learn in School) Episode 316. Strategies for Surviving and Thriving On-Call with Aidan Lucey

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, I'm sharing the most important things technicians need to know to become experts at supermarket refrigeration. These include mastering the fundamentals like understanding the piping and instrumentation diagram (P&ID), wiring diagrams, IO schedules, and refrigeration schedules. I also discuss the process I use to help refrigeration technicians level up faster and become confident problem solvers, which in turn dramatically reduces troubleshooting time, cuts down on callbacks, and helps refrigeration techs approach service calls with a completely different mindset.  In this episode, we discuss: (3:10) Diagnosing CO2 gas cooler pressure issues using trend graphs (7:05) How technicians are learning to think differently (11:20) Four key documents every refrigeration tech must understand (16:15) Why data, trend graphs, and valve percentages reveal the real problem (21:30) The problem with traditional training (26:00) Continuous microlearning (31:45) Strong troubleshooting fundamentals (36:30) Building a global community of refrigeration technicians (41:20) How to take on bigger CO2 and supermarket challenges Helpful Links & Resources: Episode 251. Supermarket Refrigeration Service and Troubleshooting Tips Episode 299. Basic Refrigeration 101 Episode 332. 7 Transcritical CO2 Refrigeration Service & Maintenance Tips

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, we're breaking down how to prevent supermarket callbacks - and why the issue is rarely the rack itself. Callbacks crush margins, burn out technicians, frustrate service managers, and erode customer confidence. It comes down to diagnosing the root cause of issues, which almost always comes back to your process as a refrigeration technician: weak fundamentals, poor understanding of rack sequence of operation, misdiagnosis, and a lack of structured troubleshooting. We also discuss how structured development programs dramatically reduce callbacks, improve technician confidence, and increase gross margins for your company.  In this episode, we cover: (02:45) The cost of refrigeration service callbacks (05:30) Cause of most refrigeration service callbacks (07:45) Weak fundamentals and missing rack sequence of operation steps (10:10) The most common misdiagnoses in supermarket refrigeration (13:20) Why control strategies matter (16:40) The danger of being a "parts changer" (19:30) How expert techs think differently (23:30) How training reduces callbacks and grows better businesses Helpful Links & Resources Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs Episode 306. Mastering Supermarket Service Calls with Andrew Freeburg Episode 251. Supermarket Refrigeration Service and Troubleshooting Tips  

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, we're joined by Refrigeration Mentor Community Ambassadors Andrew Freeburg and Erik Holland ot share some call stories from the field, including a severely overheated semi-hermetic compressor teardown. We also walk through safely isolating, recovering, and cleaning or replacing TXV screens/strainers and also common refrigerated case freeze-up causes and defrost strategy. Interested in joining the next Refrigeration Mentor Community Meetup? Click here. In this episode, we cover: (01:56) Copper Plating Moisture Clues (04:32) Oil Color And System Cleanup (08:05) Pumpdown And Screen Cleaning (10:56) Case Freeze Up Root Causes (14:07) Suction Liquid Line Routing Fix (16:12) Airflow Blockage Issues (16:43) Coil Gaps and Bypass (19:00) Defrost Strategy Breakdown (21:05) Humidity and Data Trends (23:19) What Not to Adjust First (24:34) Wild Leg Voltage Explained (27:20) Safety Metering Lessons Helpful Links & Resources: Episode 365. Compressor Inspections and Troubleshooting Stories from the Field Episode 329. The Ins & Outs of Compressors Episode 295. A Compressor Story: The Key to Faster Troubleshooting  

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here This conversation was from our latest Refrigeration Mentor Community Meetup, talking about refrigeration controls and electrical systems with Andrew Freeburg and Erik Holland. We cover control fundamentals such as transformers, multiplex board setup, communication basics, polarity, baud rate, cable practices, and fail-safe settings for loads. We also discuss how to build confidence through competence - studying, repetition, applying skills on real systems, asking questions, using community support, setting goals, and learning by teaching. Interested in joining the next Refrigeration Mentor Community Meetup? Click here. In this episode, we discuss: (00:30) Confidence and Competence (06:02) Learning How to Learn (09:58) Setting Goals and Support Groups (15:42) Dunning Kruger Effect (21:58) Electrical Basics and Safety (22:21) Center Tap Transformers (24:30) Multiplex Boards and Dip Switches (25:59) Binary Addressing Switches (26:37) Power and Comms Terminals (27:11) Comms Voltage and LEDs (29:40) Wiring Noise and Shielding (30:47) Fail Safe Dip Switches (33:46) Analog Inputs and Outputs (34:54) Software vs Hardware Logic (39:06) Panel Safety Basics (43:30) Meter Testing and Ratings (47:47) Electrical Safety Mindset  Helpful Links & Resources: Episode 371. A 6-Step Process for Faster Electrical Troubleshooting Episode 215. Understanding Refrigeration System Controls with Larry Herman of Redline Control Design

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, we're talking with Rob Ochs of Recold to unpack his long and successful refrigeration career - from rack refrigeration, to global sales and adiabatic coolers. He shrares practical tips for technicians and engineers working with modern systems, including CO2. Rob also covers career lessons, communication advice and troubleshooting tips for technicians to help reduce callbacks and make smarter equipment decisions. This episode was recorded live at the 2026 AHR Expo. (0:40) Rob Ochs' Career Path (2:09) Navigating Career Transitions in Refrigeration (5:49) Why Refrigeration Techs Should Learn Design  (10:29) Condenser and Gas Cooler Sizing 101 (14:34) Nameplates, Rack Summaries, and Finding Mismatches (20:17) Critical Charge vs DX (22:52) Finding Mentors (24:06) Condenser Fan Strategies (29:11) Latent Gas Defrost Explained (33:36) Adiabatic vs Air Gas Coolers (39:44) Pad Efficiency and Seasonal Pad Removal Helpful Links & Resources: Follow Robert on LinkedIn Recold AHR Expo Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs Episode 271. The Inspiring Refrigeration Journey of Robert Ochs

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, we're talking about commercial refrigeration trends and technician realities in the UK/Europe versus North America with UK-based Refrigeration Consultant, Brian Churchyard. We cover the transition to CO2 transcritical, as well as skilled-trades shortages, wage and workload pressures, and the need for continual upskilling across service, maintenance, design, installation, and commissioning sectors of refrigeration. Brian also shares some hands-on fundamentals and things for new technicians to be excited about. This episode was recorded live at the 2026 AHR Expo. In this episode, we discuss: (0:51) Brian's Journey: From Service Engineer to Supermarket Head of Engineering (3:30) Refrigeration Trends in Europe (6:01) A2L Safety, Flammability Context & Design Risk Mitigation (10:48) Upskilling for the Low-Carbon Transition (11:24) The Skilled Trades Shortage (14:55) Pay, Workload & Market Pressures (17:03) Attracting New Refrigeration Professionals (18:54) Building Strong Refrigeration Techs Faster (20:06) Customer Relationships and Clear Communication (22:54) Refrigeration Controls (23:33) Omega Solutions Now Data (31:08) Refrigeration Industry Outlook (34:27) Advice for New Refrigeration Technicians Helpful Links & Resources: Omega Solutions Now Data Episode 374. Growing the Refrigeration Industry Globally with World Refrigeration Day Founder, Steve Gill Episode 285. CO2 Experts: Transitioning to CO2 as a Service Technician Q & A with Andrew Freeburg Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4)  

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, we're joined by UK-based Refrigeration Consultant Steve Gill to talk about the refrigeration industry's impact around the world - enabling travel, preserving food, vaccines, medicines, supporting data centers and more. Steve started World Refrigeration Day (June 26) in 2019 and makes a special announcement about the 2026 theme on this episode - listen to find out! We also discuss practical outreach ideas to help promote and grow the refrigeration industry around the world. This episode was recorded live at the 2026 AHR Expo. In this episode, we discuss: (1:31) Steve's Refrigeration Journey: From Tools to Global Consulting (3:05) Promoting Refrigeration to Students (5:51) Origin of World Refrigeration Day (14:09) Outreach Ideas for the Refrigeration Industry (16:49) Announcing the 2026 World Refrigeration Day Theme (17:42) What "Cool Intelligence" Really Means in Refrigeration (21:26) Support & Sponsorshipfor World Refrigeration Day (23:19) AI in Refrigeration (26:17) Training & Mentorshipin Refrigeration Helpful Links & Resources: https://worldrefrigerationday.org/ https://www.ahrexpo.com/ Episode 320. Celebrating World Refrigeration Day Episode 324.  Using AI To Learn and Troubleshoot Refrigeration Systems  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking about installation prep for CO2 refrigeration. I'm joined by longtime refrigeration technician and Refrigeration Mentor Community Ambassador Andrew Freeburg to discuss CO2 system installation, design, evacuation, and pressure testing, diving into best practices and common challenges. This episode provides valuable tips for refrigeration technicians looking to expand their knowledge and expertise in handling CO2 systems. This episode was recorded live during one of our regular Refrigeration Mentor Community Meetups. Join the next meetup here. In this episode, we cover: (1:37) Dealing with Pain and Injuries on the Job (8:06) Training Apprentices Effectively (16:33) Insights from the HR Show (17:50) CO2 System Design and Installation (34:24) Understanding Pressure Ratings and Conversions (35:40) Installation Prep for CO2 Systems (36:24) Proper Support and Slope for Piping (38:15) Brazing and Nitrogen Purging (38:48) Setting Cases and Proper Installation Practices (40:06) Following Manufacturer Specifications (41:57) Expansion Loops and Traps (51:42) Pressure Testing Procedures (57:29) Triple Evacuation and Deep Vacuum Helpful Links & Resources: Episode 160: Things to Know When Installing and Servicing CO2 Refrigeration Systems Episode 285. CO2 Experts: Transitioning to CO2 as a Service Technician Q & A with Andrew Freeburg Episode 81. Challenges Faced When Installing CO2 Systems

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking with technician Aidan Lucey about neurodiversity in the refrigeration industry - discussing ADHD (attention-deficit/hyperactivity disorder) and its prevalence among technicians. Aiden, a Refrigeration Mentor Community Ambassador, shares personal experiences with hyperfocus, recognizing neurodiverse traits in himself and others, and how it impacts technicians' job performance and mental health. We also cover the importance of setting boundaries, the benefits of exercise, and effective communication within teams when it comes to balancing neurodiversity and a healthy, thriving work life. In this episode, we cover:  (0:19) Neurodiversity and ADHD in Refrigeration (0:47) Aidan's Personal Experiences with ADHD (7:13) Impact of Neurodiversity on Relationships and Communication (10:33) Mentoring and Empathy in the The Trades (14:58) Challenges and Mindset Shifts Regarding ADHD and Neurodiversity (17:54) Generational Differences in the Workforce (18:40) Neurodiversity and ADHD Career Success Stories (21:13) Maximizing Earnings and Career Growth In The Trades (25:03) Importance of Electrical Knowledge (27:54) Patience and Problem-Solving In The Skilled Trades Helpful Links & Resources Episode 167: Why Mentors Play a Key Role in Your Refrigeration Journey with Bill Zoren Key Mechanical Episode 125: Next Generation Leadership and Management for HVACR Professionals w/ James Bailey  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, you'll learn important electrical troubleshooting techniques that help you stop guessing and start proving in diagnosing electrical issues in refrigeration systems. We'll explain the significance of understanding power and control circuits, how to effectively read diagrams, and the essential measurement techniques across components. We also cover common issues like block power and failed loads, and discover a six-step repeatable method for efficient troubleshooting. This episode is packed with valuable tips for technicians to better understand refrigeration electrical systems and feel more confident on service calls. In this episode, we discuss: (0:37) Understanding Circuits in Refrigeration Systems (1:57) Diagnosing Refrigeration Electrical Problems (2:27) Effective Troubleshooting Techniques (5:00) Reading and Interpreting Electrical Wiring Diagrams (9:26) Common Mistakes and Misunderstandings (10:52) Six-Step Troubleshooting Process Helpful Links & Resources: Episode 323. Electrical Troubleshooting 101 Episode 305. CO2 Experts: Electrical Troubleshooting Episode 296. Electrical Troubleshooting in Refrigeration  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking with Billy Carlson of Carlson Heating and Air Conditioning about his personal story and career path. Billy shares his experience and reflections on the refrigeration industry, including tips for training new technicians. We cover key topics such as the challenges of rack refrigeration, the transition to CO2 systems, the importance of manufacturer support, and the dynamics of training technicians. We also discuss practical aspects like handling dry ice, system startups, and the impact of new technologies like ejectors. This episode was recorded live at the 2026 HVAC/R Training Symposium. In this conversation, we cover: (0:20) Billy Carlson's Journey in Refrigeration (1:56) Challenges and Learning in Supermarket Refrigeration (2:54) Transitioning to CO2 Refrigeration Systems (12:26) Training and Mentorship in Refrigeration (18:55) E2 Settings (19:49) Trend Graphs and CO2 Refrigeration  Systems (21:09) Cold Weather Challenges (22:47) Insulation and Roof Design (28:22) Advice for New Refrigeration Technicians Helpful Links & Resources: HVAC/R Training Symposium Episode 72. Why You Need To Head To Events Like The HVACR Training Symposium Episode 237. Tips for New Technicians Getting Into Supermarket Refrigeration with Aidan Lucey Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking about the critical mindset shift required for working with CO2  refrigeration systems. This is especially important for technicians with apprehensions transitioning from HFC systems, to help you become more confident working with CO2 refrigeration systems. This episode covers handling high-pressure environments, essential tools, and practical advice that will help all refrigeration technicians become experts in CO2 refrigeration. The more you understand the fundamentals of CO2 refrigeration, how to prioritize safety, and learn to navigate the complexities of CO2 systems, the more you'll embrace the growing prominence and extraordinary benefits of CO2 refrigeration. In this episode, we discuss: (0:06) The CO2 Refrigeration Mindset Shift (0:54) Challenges and Safety in CO2 Refrigeration Systems (4:24) Efficiency and Environmental Impact of CO2 (6:25) Understanding Superheat and Tools for CO2 (9:34) Fundamentals and Training for CO2 Refrigeration (11:34) CO2 Refrigeration Troubleshooting Tips (14:18) The Importance of Continuous Learning In The Trades Helpful Links & Resources: Episode 312. CO2 Experts: Basic Terminology & Keywords Episode 283. CO2 Experts: The Shift from HFCs to CO2 - Lessons Challenges and Solutions with Conor Eaton-Smith Episode 201. Removing the Fear of CO2 Refrigeration with Andrew Freeburg

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're going into the fundamentals of electrical troubleshooting for refrigeration systems. Building a solid foundation in electrical work will help technicians succeed in the field and troubleshoot far more efficiently. I'll share a repeatable six-step process to tackle electrical issues which will help you better understand the logic behind wiring diagrams - which will completely reframe how you tackle electrical issues out on your service calls. In this episode, we cover: (3:34) Understanding Refrigeration Electrical Components (5:07) 6-Step Electrical Troubleshooting Process (9:21) Importance of Ground Troubleshooting (11:40) Refrigeration industry Events Helpful Links & Resources: Episode 323. Electrical Troubleshooting 101 Episode 296. Electrical Troubleshooting in Refrigeration Episode 12. You Need To Know About Refrigeration Compressor Electrical Issues AHR Expo

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're walking you through how refrigeration technicians can transition into leadership roles with Ben Boyer of The Arcticom Group. Ben covers the mindset shifts, skills development, and practical steps necessary for career advancement and shares personal anecdotes and essential advice on building confidence, conscious leadership, handling emotional responses, and continuous learning. This episode is packed with guidance and inspiration for any refrigeration technician looking to advance into a management or leadership role. In this episode, we discuss: (1:36) How to transitioning to a leadership roles (5:12) Handling emotions in leadership (9:49) How to ask for a promotion (20:43) Overcoming fear of public speaking (26:09) Personal development for tradespeople (36:37) How to build relationships with dispatch Helpful Links & Resources: Episode 286. Leadership Training for Technicians with Jim Pape of The Arcticom Group Episode 125: Next Generation Leadership and Management for HVACR Professionals w/ James Bailey Episode 187: Making The Leap From Technician To Service Manager - Learning Leadership Skills with Scott Farley of The Arcticom Group The Arcticom Group  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking about electrical troubleshooting. This topic comes up so often in our training programs and it's one that challenges both new and experienced refrigeration technicians. Here, we cover everything from proper voltage, to reading and understanding manuals, and tips for using systematic approaches to solve problems. We also discuss proper calculation of refrigerant charge, electrical safety measures and how to be more efficient in the field.  In this episode, we cover: (0:04) Refrigeration Electrical Troubleshooting Basics (3:24) Understanding Refrigeration Wiring Diagrams (7:20) Electrical Safety (14:09) Resourcefulness in the Field Helpful Links & Resources: VIDEO: Electrical Troubleshooting 101: How to Diagnose & Fix Refrigeration Problems Like a Pro Episode 259. CO2 Experts Live: Electrical Troubleshooting with Rusty Walker Episode 327. Electrical Troubleshooting Strategy  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is another of our live "Morning Coffee" sessions inside our Refrigeration Mentor Community with longtime refrigeration technician, Andrew Freeburg and fellow refrigeration prefessionals. This discussion covers a variety of technical topics including inspecting compressors, proper sensor placement and insulation, particularly for gas cooler outlet sensors, as well as diagnosing system issues such as liquid line frosting due to low refrigerant charge. Interested in joining the next meetup live? Join our FREE Refrigeration Mentor Community today. In this episode, we cover: -Hands-on refrigeration training  -Compressor troubleshooting and maintenance -CO2 refrigeration system best practices -Ensuring accurate temperature readings -Drop leg sensor placement and insulation guidelines -CO2 supermarket refrigeration  -Frosted liquid line -Thermodynamics in refrigeration Helpful Links & Resources: VIDEO: Scroll Compressor Teardown: What to Watch For VIDEO: Troubleshooting CO2 Gas Coolers with BAC Part 1: Sensors, ECM Fans, Water Issues & Setup Tips Episode 17. Troubleshooting the Gas Cooler of a Transcritical CO2 Refrigeration System with Lars Hørup Jensen Episode 133. Your Compressor Success Guide  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is another of our "Morning Coffee" sessions inside our Refrigeration Mentor Community with longtime refrigeration professionals Andrew Freeburg and Erik Holland, discussing challenges and solutions for the refrigeration workforce. We share experiences and insights into technician shortages, training new technicians, and the evolving landscape of refrigeration. We also get into a technical deep dive on oil analysis, detailing how to read lab reports, assess moisture, contaminants, and acidity in refrigeration systems. Interested in joining the next meetup live? Join our FREE Refrigeration Mentor Community today. In this episode, we discuss: -Challenges in the refrigeration industry -Importance of mentorship in the trades -Training and knowledge sharing -Global perspectives on refrigeration -Hands-on troubleshooting tips -Refrigeration safety and efficiency -Career opportunities in refrigeration -Understanding oils in compressors -Refrigeration oil analysis -Moisture control -Analyzing oil samples -Refrigeration preventive maintenance strategies  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is another in our "Morning Coffee" series inside our Refrigeration Mentor Community featuring longtime refrigeration professionals Andrew Freeburg and Erik Holland. Here, we reflect on achievements from 2025 and set goals for 2026, highlighting the importance of planning and proactive goal setting. We also cover some technical topics like case wiring, defrost heaters, and electrical diagrams. Interested in joining the next Morning Coffee live? Join our FREE Refrigeration Mentor Community today. In this episode, we cover: -Reflecting on 2025 achievements -Setting goals for 2026 -High pressure valve issues -Fine-tuning system performance -Fan speeds -Troubleshooting electrical issues in refrigeration systems -Wiring diagrams -Diagnosing electrical problems -Global electrical standards Helpful Links & Resources: Episode 210. Mastering Goal Setting to Skyrocket Your Professional Growth Episode 358. Trend Graphs and CO2 System Troubleshooting with Andrew Freeburg and Erik Holland Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this special episode, we feature an original song we created using AI titled "Built in the Field"' illustrating the experiences and challenges faced by refrigeration field technicians, while celebrating our hard work and dedication. Listen, add to your playlist and let us know your thoughts! Links & Resources: Lyric Video on Facebook  Cory Cruz "The Refrigeratin Man"  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this special episode, we feature an original song we created using AI titled "Built In The Field"' paaying tribute to the experiences and challenges faced by refrigeration field technicians and celebrating our hard work and dedication. Listen, add to your playlist and let us know your thoughts! Links & Resources: Lyric Video on Facebook  Cory Cruz "The Refrigeratin Man"  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, I'm sharing ways you can bring more value to your customers, and in turn, the breakthroughs that come back in the form of new skills, job opportunities, pay raises etc. It starts with investing in professional growth and leveraging a community of fellow refrigeration professionals for support, learning and networking. I also share a couple inspiring stories of technicians who have rapidly advanced their skills through dedication and taking action on training programs.  In this episode, we discuss: -Importance of growth and motivation -Professional development in the trades -Overcoming challenges -Success stories -Soft skills that make a big difference -Communication skills development -Building relationships in the refrigeration industry -How to get more work in refrigeration -Leadership skills Helpful Links & Resources: Episode 216. How to Become a Better Technician By Creating More Value Episode 139. 7 Tips For Building Good Training And Development Habits  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is about the importance of curiosity when your out on service calls to help in troubleshooting. Curiousity is a trait that will open doors to dig deeper, leverage resources, inspect things more thoroughly and get to know the complex systems we work on so much more. Here, we cover troubleshooting techniques, specifically focusing on dealing with proof failures and SLA alarms. The more you learn, the more refrigeration technicians will fast-track your careers and become confident, skilled professionals. In this episode, we cover: -Importance of curiosity in refrigeration -Refrigeration training programs  -Proof failure troubleshooting example -Advice for on-call technicians -Investing in yourself and continuous learning Helpful Links & Resources: Episode 250. Service Call Stories and Troubleshooting Tips with Andrew Freeburg Episode 333. Training and Troubleshooting Tips to Level Up Your Career Episode 295. A Compressor Story: The Key to Faster Troubleshooting  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is is on oil management for CO2 refrigeration systems, another of our "Morning Coffee" sessions with longtime refrigeration professionals Andrew Freeburg and Erik Holland.  We cover the intricacies of oil separators, the role of velocity in oil management systems, the significance of net oil pressure, the impact of variable frequency drives (VFDs), and common troubleshooting techniques. Interested in joining the next Morning Coffee live? Join our FREE Refrigeration Mentor Community today. In this episode, we cover: -Challenges in oil management -Components of oil management systems -Practical tips and troubleshooting -Oil management in compressors -Oil sensor issues -VFDs and compressor rotation -Gauges and proper wiring -Scroll compressor lockups -Pressure differentials in oil separators -Maintenance and efficiency in CO2 systems -Advancements in CO2 technology Helpful Links & Resources: Episode 105: Oil Management w/ Philip Walker Arneg Systems Episode 253. CO2 Experts: Designing an Oil Management System with Nabil Cook Episode 358. Trend Graphs and CO2 System Troubleshooting with Andrew Freeburg and Erik Holland  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is another of our "Morning Coffee" sessions with longtime refrigeration professionals Andrew Freeburg and Erik Holland, diving deep into trend graphs and CO2 refrigeration system troubleshooting. We cover understanding and reading trend graphs, practical tips for locating and analyzing system inefficiencies, and the procedures for fine-tuning refrigeration systems. We also discuss gas coolers, the impact of ambient temperature on system performance, and effective strategies for maintaining system stability in cold climates. Interested in joining the next Morning Coffee live? Join our FREE Refrigeration Mentor Community today. In this episode, we cover: -Understanding trend graphs -Comparing graphs on E2 systems -Trend graph analysis -Graphing techniques on E2 systems -Analyzing CO2 system graphs -System fine-tuning -Creating work and building credibility -Advanced graph analysis and troubleshooting -High pressure valve and bypass valve correlation -Gas cooler and system stability -System oscillations and expansion valves -Gas cooler maintenance -High pressure valve control -Fan control strategies -Troubleshooting fan and gas cooler issues -Winter challenges in CO2 systems -Heat reclaim and system efficiency Helpful Links and Resources: Episode 287. CO2 Experts: Using Trend Graphs to Troubleshoot CO2 Systems with Andrew Freeburg Episode 144.  Troubleshooting CO2 High Pressure Valves Using Trend Graphs with the CAREL Boss System Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode,we're talking about how to build your professional network in the refrigeration industry - connecting with the people, community and mentors you need to know to learn and move up faster. It's not something typically taught in the trades, so this quick episode also covers overcoming resistance, what to do in a negative work environment, and how to develop the mindset necessary for growth and improvement as a refrigeration technician.  In this episode, we cover: -Building community and networking in the trades -Learning from experience -Focusing on proper techniques and practices -Developing the mindset for continuous improvement -Finding the right mentors -How longevity does not always equal proficiency Helpful Links & Resources: Episode 147: Unlocking Success: 5 Steps to Develop a Growth Mindset Episode 342. Refrigeration Troubleshooting Stories with Andrew Freeburg Episode 167: Why Mentors Play a Key Role in Your Refrigeration Journey with Bill Zoren Key Mechanical

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we explain PID (Proportional-Integral-Derivative) controllers used in refrigeration systems. This will give refrigeration technicians a pragmatic understanding of PID tuning, plus a procedural checklist before making any adjustments, and lots of tips on how to optimize refrigeration system performance through proper PID tuning.  In this episode, we cover: -PID controllers and their importance in refrigeration  -Explanation of Proportional-Integral-Derivative components  -Manufacturer settings -Tips for fine-tuning electronic expansion valves (EEVs)  -Sensor placement -Stable suction pressure  -PID adjustment checklist  -Steps for tuning PID settings  -Common issues caused by improper PID tuning  -Performance indicators for well-tuned systems  Helpful Links & Resources: Episode 344. Basics of CO2 Controls - Service Calls & Troubleshooting Rack Controllers with Kevin Mullis (Part 4 of 4) Episode 279. CO2 Experts: Superheat - Controls & Common Issues with Chris Griffiths and John Rothery Episode 299. Basic Refrigeration 101  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're giving you an inside look at the Refrigeration Mentor Playbook - the methodology we use to train and elevate technicians, contractors and the refrigeration industry. The goal is to inspire fellow refrigeration professionals to reap the immense value of continuous learning, and for managers to leverage teaching and mentorship to build stronger teams. Everyday, we see students of our programs achieving business growth and greater customer satisfaction in refrigeration, because they've developed new skills and better work dynamics. That's why we do this at Refrigeration Mentor.  In this episode, we cover: -Importance of training and mentorship -Developing effective training programs -Core training programs at Refrigeration Mentor -Building customized training programs -Understanding equipment and engineering -Impact of effective training -Role of safety in training Helpful Links & Resources: Episode 65. Motivation, Mindset and Mentorship Episode 139. 7 Tips For Building Good Training And Development Habits Episode 167. Why Mentors Play a Key Role in Your Refrigeration Journey with Bill Zoren Key Mechanical  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking about blending personal and technical development, focusing on how AI can be effectively used for troubleshooting and learning. It takes an investment of both time and money into personal growth - setting career goals, attending training sessions, and developing strong communication within teams. This conversation is loaded with strategies for technicians looking to advance in their careers and take a proactive approach to self-improvement and professional development. In this episode, we cover: -The impact of refrigeration on everyday life -Attending industry events and learning from technicians -Using AI in refrigeration troubleshooting -Value of training and personal investment -Building confidence  -Career growth in the trades -The power of setting goals -The future of refrigeration Helpful Links & Resources: Episode 352. AI and New Refrigeration Training & Troubleshooting Resources Episode 338. Professional Development Tools & Resources in Refrigeration Episode 256. Career Tips for New Technicians  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're diving deep into TX (Thermal Expansion) valves.  We got a lot of more electronic valves coming, stepper valves, pulse valves etc. out there, and getting a good understanding of the different kinds TX valves and how they work is critical for refrigeration technicians to be able to setup and troubleshoot more efficiently. We cover common issues and troubleshooting tips, including how to adjust superheat, the impact of liquid temperature on TX valve sizing, and the various factors to consider before adjusting or replacing TX valves.  In this episode, we discuss: -Understanding TX valves -Superheat and compressor management -Refrigerant injection and cooling techniques -Importance of liquid temperature -Sizing and testing TX valves -Troubleshooting TX valves -Comprehensive system analysis -Practical tips and community insights Helpful Links & Resources: Episode 16. TXV/TEV - A discussion about Thermostatic Expansion Valves Episode 326. Mastering A2L TX Valves with Jamie Kitchen of Danfoss Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4)  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is from one of our regular Refrigeration Mentor Community meetups with fellow technicians. We discuss a range of topics like E3 training controllers, compressor issues, inspection cylinders, and the use of AI in troubleshooting. We also cover a list of events for refrigeration technicians to check out, share some wins and stories from the field, as well as some resources the techs on the call have found useful of late. These Community Meetups open forum and we host these regularly - if you'd like in on the next one, be sure to join the Refrigeration Mentor Community Hub. In this conversation, we discuss: -New CO2 Controller Challenge -AI in refrigeration -E3 controller training and licensing -Inspecting cylinders -Compressor issues and solutions -Oil and refrigerant retrofit -Diagnosing blow-by -Checking valve plates and wrist pins -Job interviews  - Using AI in troubleshooting Helpful links & Resources: Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs Episode 344. Basics of CO2 Controls - Service Calls & Troubleshooting Rack Controllers with Kevin Mullis (Part 4 of 4) Episode 115: Understanding Compressors: What You Need To Know FMI (Food Industry Association) Events RETA Conference  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking with Frank Croak, EMS Manager at Climate Pros, about the shift from mechanical to electronic refrigeration controls. Frank offers valuable advice for technicians on both the technical side and why keeping up with technology can help you advance in today's refrigeration field. We also discuss the impact of CO2 on the industry, the role of AI in predictive analytics, and the need for technicians to develop strong mechanical and control system knowledge. In this conversation, we cover: -Evolution of controls in refrigeration -The shift to CO2 and its challenges -Value of hands-on experience -Technological advancements in refrigeration -Balancing work and personal life in the trades -Tips for technicians transitioning to controls -Understanding the basics of heat movement -Electrical troubleshooting -Mentoring and coaching in refrigeration -Effective communication and accountability -Setting goals and continuous learning Helpful Links & Resources: Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4) Episode 336. Fast Track to Learning Electronic Valves & Controllers Episode 261. Supermarket Case Controller Troubleshooting Tips Connect with Frank on LinkedIn FMI (Food Industry Association) Events Climate Pros  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're digging into some tips and tricks for supermarket refrigeration with Rob Ochs, longtime refrigeration industry veteran. We'll delve into understanding and optimizing superheat, troubleshooting common issues, and the importance of proper maintenance and recommissioning. Rob also has some awesome tips for setting superheat correctly, checking compressor superheat, handling different refrigerant systems, and addressing common problems encountered with rack systems. This episode is filled with practical advice and tips for refrigeration technicians aiming to elevate their expertise and efficiency. In this episode, we cover: -Understanding superheat and compressor mechanics -Rack refrigeration challenges -Defrost systems and troubleshooting -Superheat and subcooling strategies -Recommissioning and maintenance tips -Importance of individual compressor checks -Discharge superheat: manufacturer differences -Compressor design and liquid injection -Setting superheat for different run lengths -Environmental conditions and system efficiency -Logging and tracking superheat -Superheat adjustments and troubleshooting Helpful Links & Resources: Episode 271. The Inspiring Refrigeration Journey of Robert Ochs Episode 203. Supermarket Refrigeration Service Tech Tips with Andrew Freeburg Episode 306. Mastering Supermarket Service Calls with Andrew Freeburg  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking about developing a "refrigeration mindset" for truly advancing your career. This was the topic of a recent keynote I delivered at a recent Refrigerating Engineers and Technicians Association (RETA) event, which highlighted 3 core components: goal setting, accountability, and continuous learning. These are skills outside of the day-to-day technical skills that every successful refrigeration professional has developed and harnessed to make massive career moves. If you're curious about what that mindset truly means and how to develop it for yourself, this a conversation you'll want to get in on. In this episode, we discuss:  -Goal Setting  -Attending industry events -Developing a "refrigeration mindset" -Continuous learning in the trades -Challenges and opportunities in refrigeration -Investing in training and networking -Importance of mentorship and community Helpful Links & Resources: Episode 113: 5 Tips on Developing a Growth Mindset Episode 147: Unlocking Success: 5 Steps to Develop a Growth Mindset Episode 214. How to Develop the Right Mindset for Success Refrigerating Engineers and Technicians Association (RETA)  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking about key tips and strategies that are guaranteed to make you a better refrigeration professional. These include blending the hard skills of the day-to-day job, along with the softer skills that will help you meet the people and acquire the knowledge to move up in the refrigeration industry. Learning things like preventive maintenance, innovative technologies for CO2 systems, even understanding refrigerant regulations. I'll also share a list of recommended networking events to help you learn, connect and uplift the refrigeration industry as a whole.  In this episode, we discuss: -Refrigerant regulations and industry trends -CO2 strategies and design courses -Importance of preventative maintenance -Attending industry events -Handling the skilled trade shortage -Promoting the refrigeration industry externally -Technician training and success stories -Overcoming industry challenges -Promoting the refrigeration industry -Event highlights and networking -Upcoming events and opportunities Helpful Links & Resources: Episode 216. How to Become a Better Technician By Creating More Value Episode 228. Tips for Faster Service Calls & Better Time Management Chillventa (Oct 13-15, 2026) North American Sustainable Refrigeration Council (NASRC) Events HVAC/R Symposium (Jan 22-23, 2026) Refrigerating Engineers and Technicians Association (RETA) AHR Expo (Feb 2-4 2026) EuroShop (Feb 22-26, 2026)

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're diving into CO2 refrigeration controls with Paul Shannon, Director of Controls for Loblaw Energy. Paul shares practical tips for navigating case controllers, as well as oil management, understanding high-pressure and flash gas bypass valves, and the significance of building pressurization in refrigeration performance. Paul also outlines the advantages of integrating advanced controls for effective troubleshooting and system optimization.  In this episode, we discuss: -CO2 controls -Paul's journey into the industry -Challenges and learning in co2 systems -Safety line alarms -Networking and case controllers -Helpful hints from Copeland and Microthermal -Tips for technicians before making a call -Common field mistakes and how to avoid them -Understanding high pressure and bypass valves -Importance of continuous learning Helpful Links & Resources: Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4) Episode 332. 7 Transcritical CO2 Refrigeration Service & Maintenance Tips Episode 201. Removing the Fear of CO2 Refrigeration with Andrew Freeburg  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This is part two of a two-part conversation on CO2 gas coolers with Greg Martel and Al Rivera of BAC (Baltimore Aircoil Company). In this episode, we share practical tips on handling common issues like pump failures, overflow problems, and voltage discrepancies. We also cover how to correctly check alarms, maintain pads, and utilize control strategies for optimal performance. Greg and Al also share great advice on customizing system settings for seasonal efficiency and on using advanced control sequences for energy and water savings. This two-part episode (link to part one below) is packed with practical tips and expert advice to help refrigeration technicians troubleshoot CO2 gas coolers faster and more confidently. In this episode, we discuss: -Common alarms and troubleshooting tips -Pump and flow issues -Water system failures -Control systems and seasonal efficiency -Fan speed control and airflow issues -Heat reclaim and efficiency strategies -Water and fan speed control sequences -Energy saver vs. water saver modes -Proper installation and maintenance of pads Helpful links & resources: BAC Website BAC on Facebook | YouTube | LinkedIn North American Sustainable Refrigeration Council (NASRC) Episode 345. Troubleshooting CO2 Gas Coolers with Greg Martel and Al Rivera of BAC (Part 1 of 2)  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This is part one of a two-part conversation on CO2 gas coolers with Greg Martel and Al Rivera of BAC (Baltimore Aircoil Company). We cover many setup and troubleshooting techniques, including detailed information on critical sensors, float switches, sequence operation, ECM fan motors, drop leg sensors, and common water-related issues in CO2 gas coolers. This is an episode packed with practical tips and expert advice to help refrigeration technicians troubleshoot CO2 gas coolers faster and more confidently. In this episode, we discuss: -Critical sensors and troubleshooting -ECM fan motors -Programming ECM fans -Supermarket CO2 systems  -Gas cooler sensor placement -Common water-related issues -Strategies for water and energy efficiency -Maintenance tips for gas coolers -Dealing with scale and hard water -Chemical use and pad maintenance  Helpful links & resources: BAC Website BAC on Facebook | YouTube | LinkedIn Episode 191. Designing CO2 Supermarket Refrigeration Systems: Selecting Compressors and Gas Coolers with Chris Griffiths of Omega Solutions (Part 1 of 5) Episode 17. Troubleshooting the Gas Cooler of a Transcritical CO2 Refrigeration System with Lars Hørup Jensen  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is the final in our 4-part “Basics of CO2 Controls” series with Kevin Mullis, Head of Product Engineering at Clade Engineering Systems (links to parts 1-3 below). In this one, we cover service calls and troubleshooting for CO2 rack controllers. This episode is packed with practical techniques and lessons, including dealing with overcharged and undercharged systems, interpreting critical data points from controllers, recognizing symptoms of common issues, and ensuring optimal system performance. We also discussstrategies for collaboration and communication among fellow technicians. In this episode, we discuss: -Real-world troubleshooting scenarios -Teamwork and communication in the field -Service calls and fault situations -Analyzing controller data -Identifying system issues -High pressure valve troubleshooting -Gas cooler and receiver issues -Probes and sensor placement -Ambient temperature considerations -Receiver pressure fluctuations -Understanding CO2 rack issues -Problems with high liquid levels -Common causes of overcharging -Challenges with sight glasses -Winter scenarios and heat recovery Helpful Links & Resources: Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4) Episode 341. Basics of CO2 Controls - Programming RDM with Kevin Mullis (Part 2 of 4) Episode 343. Basics of CO2 Controls - Programming CAREL with Kevin Mullis (Part 3 of 4) Follow Kevin on LinkedIn Clade Engineering Systems

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This is the third in a 4-part “Basics of CO2 Controls” series with Kevin Mullis, Head of Product Engineering at Clade Engineering Systems, this one focusing specifically on Programming with CAREL. We'll discuss the similarities between different control systems, basic components and proper installation. We also cover technical aspects, including electronic valves, pressure measurements, wiring and cable specifications for stepper valves. Better knowledge of CO2 control systems will not only help refrigeration technicians troubleshoot more efficiently, but also build much better relationships with customers and store managers.  In this episode, we discuss:  -CAREL controllers and electronic valves -Controller manual usage best practices -CO2 system pressure measurement challenges -CAREL controller configuration and flexibility -Stepper valve controller safety features -Cable specifications for stepper valves -CPT (calculated product temperature) -PID (proportional-integral-derivative) control -Maintaining controller settings -Refrigeration defrost cycle management  Helpful Links & Resources: Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4) Episode 341. Basics of CO2 Controls - Programming with RDM with Kevin Mullis (Part 2 of 4) Episode 30. CAREL's CO2 Electronic Valves and CO2 Controllers with Timo Kaufhold  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is a casual coffee session with longtime technician, Andrew Freeburg, sharing stories and lessons learned from past service calls. We discuss a number of topics, including troubleshooting oil pressure issues in refrigeration systems, P&ID diagrams, high humidity, and even practical tips for creating effective training videos for fellow technicians. We also dive into the importance of setting both professional and personal goals and the value of seeking out training resources and communities to help teach and mentor you on your career journey. Want to take part in our next coffee chat live? Join the Refrigeration Mentor Hub here. In this conversation, we cover: -Creating effective training videos -Oil pressure issues -Troubleshooting sweating cases -Understanding mullion heaters -High humidity and HVAC issues -Importance of reading manuals -Real-world troubleshooting examples -Goal-setting -Personal and professional growth in the trades Helpful Links & Resources: Episode 337. Troubleshooting a Refrigeration Rack Down with Andrew Freeburg Episode 250. Service Call Stories and Troubleshooting Tips with Andrew Freeburg Episode 163. A Pro's Handbook for Effective Refrigeration Troubleshooting  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this second part of our Basics of CO2 Controls training series, we're diving into programming RDM controllers and staging compressors. This episode focuses on understanding inputs and outputs, programming controllers and mastering the fundamentals behind various manufacturers' controls, including Danfoss, Microthermal and more. Kevin shares key information on setting pressure targets, understanding response times, working with receiver interlocks, and more, all to help refrigeration technicians handle any CO2 refrigeration system more efficiently. In this episode, we cover: -Programming controllers -Understanding compressor staging and alarms -Mapping inputs and outputs -Setting compressor parameters -Safety in CO2 refrigeration systems -Dry ice formation -Managing discharge pressure and alarms -High ambient temperature strategies -Optimizing gas cooler and receiver settings -Noise control Helpful Links & Resources: Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4) Episode 170. Troubleshooting RDM CO2 Controllers w/Cody Hamm and Chris Prom Resource Data Management RDM Episode 64. CO2 Controls with RDM Resource Data Management

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is the first of a four-part CO2 series, starting off with a dive into the basics of CO2 controls with Kevin Mullis, Head of Product Engineering at Clade Engineering Systems. This is about returning to fundamentals, even for seasoned technicians, to ensure a thorough understanding CO2 controls, programming, wiring diagrams, meter readings, and step-by-step troubleshooting techniques. Kevin shares lots of great tips and advice for refrigeration technicians to enhance their skills and confidence in handling CO2 refrigeration systems. In this episode, we cover: -Introduction to CO2 controls -Refrigeration controller fundamentals and basics -Wiring diagrams -Importance of proper tools -RDM controllers -Probes and transducers -Relays and voltage -Voltage and relays -Testing and troubleshooting relays -Universal inputs and outputs -Analog signals and transducers -Identifying and tracing probes -Practical tips for wiring and safety -Compressor circuits and VFD's -Sequence of operation in CO2 systems -Analyzing a zero zone drawing Helpful Links & Resources: Follow Kevin on LinkedIn Clade Engineering Systems Episode 315. Mastering RDM Controls, Live Commissioning & Networking Essentials with Kevin Mullis Episode 299. Basic Refrigeration 101  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're joined by longtime refrigeration professionals Andrew Freeburg and Erik Holland for a casual “Morning Coffee” covering both technical topics and personal development in the refrigeration industry. We dive into tips and field experiences for troubleshooting communication (comm) loss and controller issues in refrigeration systems. We also discuss the value of mentorship in refrigeration and have some great advice on how technicians new and experienced can mentor peers.  In this episode, we cover: -Mentorship and personal growth -Lessons from the field: com loss issues -Communication issues in controls -Recording video on service calls -Configuring controllers -Importance of proper wiring and polarity -Backup and version control -Controller replacement -Power of mentorship Helpful Links & Resources: Episode 338. Professional Development Tools & Resources in Refrigeration Episode 261. Supermarket Case Controller Troubleshooting Tips Episode 59. Industry Development and Training  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, I'm joined by regular guest Andrew Freeburg for a casual coffee talk focusing on professional development for refrigeration technicians. Andrew shares his experience and the importance of investing in oneself through learning opportunities and attending training events. We also dive into the crucial role of good communication in troubleshooting and sharing knowledge within your team, making everyone's job easier and more effective.   In this episode, we discuss:  -Time management tips -Effective communication strategies -Maintaining professionalism on the job -Technical troubleshooting: ethernet issues -Basics of controls  -Training new technicians -Attention to detail -Using multimeters and understanding sequences -Learning flex combiners and AI troubleshooting -Developing skills on different controllers -Switching controllersInputs, outputs, and relays -The value of hands-on training and networking  Helpful Links & Resources: Episode 337. Troubleshooting a Refrigeration Rack Down with Andrew Freeburg Episode 139. 7 Tips For Building Good Training And Development Habits Episode 24. The Importance of Training & Development in the Refrigeration Industry w/ John MacInnis  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode kicks off another series of “Morning Coffees” featuring conversations with refrigeration technicians sharing stories and lessons learned from the field. These chats are aimed at helping fellow refrigeration technicians grow in their careers based on the real-world troubleshooting experiences of others. This episode features Andrew Freeburg talking about his experience handling a complex refrigeration system rack down, as well as practical tips on processes and handling customer communication. In this episode, we discuss: -Diagnosing a rack issue -Finding and fixing a leak -Customer communication and documentation -Mentorship and team leadership -Communication skills in the trades -Handling customer conversations -Importance of labeling and maintenance -Time management and efficiency on service calls -Testing and analysis procedures -Sales skills for refrigeration technicians Helpful Links & Resources: Episode 334. 10-Point Rack Preventative Maintenance Checklist Episode 250. Service Call Stories and Troubleshooting Tips with Andrew Freeburg  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're diving into electronic case controllers and valves. I share practical tips on accessing and interpreting manuals, setting up controllers, and troubleshooting common issues. We also cover control points, sensor calibration, and fine-tuning P&IDs. Investing time in learning these systems will enhance your skills and help you become a more proficient technician. In this episode, we discuss: -Electronic valves and controllers -Understanding case controllers -Specific controllers from Danfoss, Copeland, Microthermal and more -Finding and using manuals -Setting up controllers -Fine-tuning and troubleshooting -Investing in learning and development Helpful Links & Resources: Episode 257. CO2 Experts Live: Case Controllers with Kevin Mullis Episode 132. Copelands E3 Controller & CC200 Secrets: Unveiling the Top 5 CO2 Tips with Brent Cheshire Episode 282. Danfoss CO2 Controllers with Dave Yoder  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode of the Refrigeration Mentor Podcast, I'm sharing 5 tips that will help you get you to the the next level of your refrigeration career. These extend beyond the technical skills and into personal development, including building leadership and communication skills, understanding project management basics, expanding industry knowledge and networking. These actionable tips will help technicians transition into new and higher roles and tremendously expand your potential for income and career advancement. In this episode, we cover: -Personal development in the trades -Setting career goals -Building leadership and communication skills -Understanding project management basics -Expanding industry knowledge and networking -Importance of industry conferences -Networking strategies for technicians -Taking on small projects to build skills -Investing in continuing education -Developing financial and business acumen -Practicing problem solving and decision making Helpful Links & Resources: Episode 274. The Biggest Key To Career Success in Refrigeration Episode 301. Lessons From a Long Career in Refrigeration with John Shartzer Episode 224. The Key To Finding New Career Opportunities as a Technician North American Sustainable Refrigeration Council (NASRC) Events Food Industry Association (FMI) Events RETA National Conference Refrigeration Service Engineers Society (RSES) Events International Institute of All-Natural Refrigeration (IIAR)  https://www.ahrexpo.com/ Chillventa