What action should be performed first when switching to a different refrigerant?

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Multiple Choice

What action should be performed first when switching to a different refrigerant?

When switching to a different refrigerant, you must purge the system first. Purging removes the old refrigerant and the oil that’s left in the lines, compressor, and components. This is crucial because refrigerants and oils are not always compatible, and any remaining old refrigerant or oil can contaminate the new refrigerant, leading to improper lubrication, potential chemical reactions, and degraded performance. After purging, you would typically recover any remaining refrigerant, evacuate the system to remove air and moisture, replace the filter-drier if needed, and then charge with the new refrigerant.

When switching to a different refrigerant, you must purge the system first. Purging removes the old refrigerant and the oil that’s left in the lines, compressor, and components. This is crucial because refrigerants and oils are not always compatible, and any remaining old refrigerant or oil can contaminate the new refrigerant, leading to improper lubrication, potential chemical reactions, and degraded performance.

After purging, you would typically recover any remaining refrigerant, evacuate the system to remove air and moisture, replace the filter-drier if needed, and then charge with the new refrigerant.

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