What is the first step if you’re unsure of the refrigerant in a system?

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When you’re unsure what refrigerant is in a system, the first step is to identify it from the cylinder label or the system data plate, then use the appropriate recovery equipment. Knowing the exact refrigerant ensures you use the correct recovery process, pressures, and oils, and it keeps you in compliance with environmental regulations. Don’t guess by charging with something you think it might be, and don’t vent or release refrigerant to the atmosphere. After identifying the refrigerant, connect a recovery machine and remove the refrigerant safely before any service or other work. If the refrigerant can’t be identified, follow the established procedure to pause work and seek the proper guidance or identification methods.