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This episode of our “CO2 Experts” series features Rusty Walker, Training Director with the North American Sustainable Refrigeration Council (NASRC), leading an in-depth discussion on troubleshooting CO2 system electrical diagrams. The conversation is loaded with tips and examples aimed at helping refrigeration technicians troubleshoot service calls faster and get more confident with electrical principles. This “CO2 Experts Live” series is all about providing deep technical training so technicians and engineers in the field can get some quick tips on how to troubleshoot more efficiently and confidently. Links to more in this series below.

In this conversation, we cover:

-Basics of electrical symbols

-Electrical relays and switches

-Voltage and troubleshooting techniques

-Electrical troubleshooting tips

-Tools refrigeration technicians need to carry

-Importance of understanding wiring diagrams

-Understanding the electrical circuit

-Using meters for 

-Tips for reading wiring diagrams

-Bipolar stepper valves

-Modbus troubleshooting 

Helpful Links & Resources:

Connect with Rusty: [email protected]  

Learn more about the NASRC: https://nasrc.org/ 

Episode 253. CO2 Experts: Designing an Oil Management System with Nabil Cook

Episode 257. CO2 Experts Live: Case Controllers with Kevin Mullis

Episode 246. CO2 Experts: Startup and Commissioning with Kevin Mullis

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