🔍 Key Concepts

• Manufacturer nameplate / data plate on machinery • How refrigerant type is normally identified for service and recharging • Difference between measuring pressures/temperatures vs reading labeled information

💭 Think About

• Where would the original equipment manufacturer normally print the refrigerant type, quantity, and other specs? • Which option gives you a quick, positive identification without needing tools or another person? • Which choices might give you indirect or uncertain information instead of a clear labeled answer?

✅ Before You Answer

• Verify which choice involves reading the factory labeling on the unit itself • Check which options depend on other people or extra equipment instead of built‑in information • Eliminate any option that would only let you infer the refrigerant type instead of seeing it clearly written