The components that are all part of a refrigeration system's compressor oil return system are the oil separator, oil reservoir, and oil regulator. These components ensure proper oil separation, storage, and flow, which are essential for lubrication and system efficiency. Therefore, the correct answer is option A: Oil separator, oil reservoir, and oil regulator.
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The main components of a refrigeration system's compressor oil return system include the oil separator, oil reservoir, and oil regulator. These parts work together to ensure that oil is efficiently separated from the refrigerant and properly returned to the compressor for lubrication. Understanding these components is critical for maintaining efficient refrigeration system performance. ;