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In this second part of a two-part episode, we're diving deep into oil management for CO2 refrigeration systems with Alessandro Silva, Senior Application Engineer at Bitzer. Here, Alessandro covers oil reservoir sizing, common failures and what to look for during maintenance checks and root-cause troubleshooting to help refrigeration techs perform more efficient service calls and be feel more confident in the field. You can also follow along this webinar on our Refrigeration Mentor YouTube Channel here.

In this episode, we discuss:

(00:58) Flash Gas Bypass Basics

(01:47) Oil Reservoir Sizing

(03:22) Differential Pressure Range

(05:25) Load Changes and Oil Flow

(06:28) Parallel Compression Setup

(10:44) Ejectors and Subcooling Options

(17:41) Low Temp Stage Recovery

(23:05) Compressor Data Benchmarks

(24:15) Compressor Software Diagnostics

(25:45) Low Superheat Fixes

(27:05) Stepper Vs Pulse Valves

(30:50) Oil Separator Maintenance

(33:26) Strainers And Trend Graphs

(35:30) Pipe Sizing For Oil Return

(37:57) CO2 Refrigeration Market Shift

Helpful Links & Resources:

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

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