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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:

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Clade Engineering Systems

Episode 315. Mastering RDM Controls, Live Commissioning & Networking Essentials with Kevin Mullis

Episode 299. Basic Refrigeration 101