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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