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Required for servicing or disposing of low-pressure appliances, typically large industrial chillers.

| Core Area | Key Details | |-----------|--------------| | | CFCs, HCFCs, HFCs, HFOs, ODP, GWP values | | Refrigerant recovery/recycling/reclamation | Definitions, equipment requirements | | Leak repair requirements | Trigger rates (e.g., 15% for commercial refrigeration), retrofit/retire rules | | Safe handling & disposal | Appliance evacuation levels (Type I, II, III) | | Regulations under 608 | Clean Air Act, Section 608, Venting prohibition | | System types | Low-pressure vs. high-pressure, small appliance rules |

"You're right," Arthur said, picking up the book. "I’m overthinking the evacuation rates. It’s all about the microns."