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In this conversation, we’re talking with Kevin Mullis, Technical Manager at Integral UK Ltd., about startup and commissioning a transcritical CO2 refrigeration system. Kevin has a wealth of experience with CO2 systems and shares some common troubleshooting issues and breaks down how to perform thorough checks and techniques for ensuring your system is properly functioning at startup. This episode is a comprehensive guide for refrigeration technicians just getting familiar with CO2, and also covers the importance of preparation, planning and collaboration in learning and getting more confident with these systems.

In this conversation, we cover:

-Overcoming initial overwhelm of CO2 systems

-Importance of planning and coordination

-Issues caused by starting a system too quickly

-Common checks before starting a transcritical CO2 refrigeration system  

-Building a network of specialists

-Asking questions on job sites

-Evacuating a CO2 rack

-Importance of reading trend graphs

-Building relationships with manufacturers

-Importance of reporting component failures

-Proper valve operation

-Glycol defrost systems

-Dealing with faulty sensors and valves

-Tips for new technicians on CO2 startups

Helpful Links & Resources:

Connect with Kevin on LinkedIn

Episode 227. Getting to Know Transcritical CO2 Supermarket Refrigeration Systems with Kevin Mullis

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