Refrigeration & Air Conditioning Mechanic Red Seal · Question
What safety device is installed in the discharge line of a large refrigeration compressor to protect against excessive pressure?
A high-pressure cut-out switch monitors discharge pressure and shuts down the compressor if it exceeds a safe limit.
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Question: What safety device is installed in the discharge line of a large refrigeration compressor to protect against excessive pressure?
Answer options: ✅ High-pressure cut-out switch
- Low-pressure cut-out switch
- Oil pressure differential switch
- Thermostat
Correct answer: High-pressure cut-out switch
Explanation: A high-pressure cut-out switch monitors discharge pressure and shuts down the compressor if it exceeds a safe limit.
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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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