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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