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This is the first of a 2-part episode in our "CO2 Unfiltered" series covering what causes compressor failures and how to prevent them, featuring Jonas Linnemann, Vice President of Technology at Vitalis. Jonas explains why oil return is more challenging in CO2, and covers topics like primary vs secondary oil circuits, separator efficiency and compressor oil carryover. He also shares practical service and maintenance tips that will help refrigeration techs prevent recurring compressor failures.

In this episode, we discuss:

(01:34) Why Oil Management Matters

(03:34) Booster System Basics

(04:47) Common Oil Misconceptions

(09:20) Viscosity and CO2 Solubility

(15:21) Primary vs Secondary Oil Circuit

(19:59) Reading P&IDs

(23:16) Oil Return Overview

(24:57) Strainers and Maintenance

(27:19) CO2 Separator Cartridges

(29:03) Differential Pressure Checks

(32:39) Oil Carryover Troubleshooting

(36:40) Cartridge Blowout Warning Signs

(40:57) Contamination in Regulators

(44:34) Cartridge Change Procedure

(47:35) Evacuation and O-Ring Tips

Helpful Links & Resources:

Jonas on LinkedIn

Vitalis

Episode 390. CO2 Oil Management (Part 1): Lubrication Basics, Oil Selection, Testing, and Troubleshooting with Alessandro Silva of Bitzer

Episode 330. Oil Issues in Refrigeration Systems

Episode 124: CO2 System Oil Management: Insights from Adam Chapman of Westermeyer Industries