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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