Refrigeration & Air Conditioning Mechanic Red Seal · Question
In a supermarket refrigeration rack, what is the purpose of an oil separator?
An oil separator is installed in the Compressor discharge line. It removes entrained oil from the high-velocity discharge gas and returns it to the compressor c
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Question: In a supermarket refrigeration rack, what is the purpose of an oil separator?
Answer options:
- To remove water from the compressor oil ✅ To return oil carried by the refrigerant vapour to the compressor crankcase
- To filter out solid contaminants from the compressor oil
- To cool the compressor oil before it returns to the crankcase
Correct answer: To return oil carried by the refrigerant vapour to the compressor crankcase
Explanation: An oil separator is installed in the Compressor discharge line. It removes entrained oil from the high-velocity discharge gas and returns it to the compressor crankcase, maintaining proper oil levels and preventing oil logging in the evaporator.
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Question explanations
- Which of the following refrigerants is a hydrofluorocarbon (HFC) and has a high ozone depletion potential (ODP
- Which component is responsible for compressing the refrigerant vapour to a high pressure and temperature?
- According to the Canadian Electrical Code (CEC), what is the minimum required working clearance in front of el
- What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostat
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