🔍 Key Concepts

• Location of an oil separator in a refrigeration/compression system (relative to the compressor discharge line) • Typical shape and size of an oil separator compared with a receiver or accumulator • Flow path: compressor → oil separator → condenser → receiver → expansion device → evaporator → suction line → accumulator → compressor

💭 Think About

• Trace the hot gas (discharge) line leaving the compressor and identify the first vessel installed in that line. Which numbered item is it? • Compare the vessels in the discharge line and suction line: which one’s job would logically be to remove oil from hot discharge gas before it reaches the condenser? • Look at the larger storage-type vessel in the liquid line and the vessel in the suction line. What are these usually called, and how do their functions differ from an oil separator?

✅ Before You Answer

• Verify which item is directly connected to the compressor discharge before the condenser coil. • Confirm that the chosen component is smaller than the liquid receiver and located on the high-pressure side, not in the suction line. • Make sure you are not confusing the suction accumulator (in the return line to the compressor) or the liquid receiver (in the liquid line from the condenser) with the oil separator.