System-dependent recovery methods may only be used on appliances containing how much refrigerant?

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Multiple Choice

System-dependent recovery methods may only be used on appliances containing how much refrigerant?

System-dependent recovery methods rely on the appliance’s own compressor to pull refrigerant out. Because they depend on the unit’s internal components, they’re practical only for small charges. The limit is 15 pounds of refrigerant or less; for larger systems, a self-contained recovery device with its own compressor is required to ensure efficient and complete recovery.

System-dependent recovery methods rely on the appliance’s own compressor to pull refrigerant out. Because they depend on the unit’s internal components, they’re practical only for small charges. The limit is 15 pounds of refrigerant or less; for larger systems, a self-contained recovery device with its own compressor is required to ensure efficient and complete recovery.

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