Final answer:
Recovery equipment that uses the system's own compressor for the recovery of refrigerant is known as self-contained or active recovery equipment.
Step-by-step explanation:
Recovery equipment that relies upon the compressor in the system would be considered self-contained. This type of equipment uses the existing compressor within the air conditioning or refrigeration system to help recover the refrigerant. The process commonly involves trapping the refrigerant into a recovery cylinder with the assistance of the system's compressor. These systems are often referred to as active recovery systems because they require the system's compressor to operate, as opposed to passive systems that do not rely on the compressor's action but on external motors or pumps.