Refrigeration & Air Conditioning Mechanic Red Seal · Question
What is the purpose of a pressure relief valve (PRV) on a refrigeration system?
A pressure relief valve is a crucial safety device designed to open and release refrigerant if the internal pressure of the system exceeds a predetermined safe
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Question: What is the purpose of a pressure relief valve (PRV) on a refrigeration system?
Answer options:
- To bypass the compressor during low-load conditions
- To maintain a constant head pressure ✅ To protect the system from excessive internal pressure
- To allow for easy refrigerant charging
Correct answer: To protect the system from excessive internal pressure
Explanation: A pressure relief valve is a crucial safety device designed to open and release refrigerant if the internal pressure of the system exceeds a predetermined safe limit, preventing catastrophic failure.
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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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