Refrigeration & Air Conditioning Mechanic Red Seal · Question
Which safety device is designed to protect a refrigeration system from excessively high discharge pressures?
The high-pressure cut-out switch opens the control circuit when discharge pressure exceeds a safe limit, shutting down the compressor.
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Question: Which safety device is designed to protect a refrigeration system from excessively high discharge pressures?
Answer options: ✅ High-pressure cut-out switch
- Low-pressure cut-out switch
- Oil pressure differential switch
- Overload protector
Correct answer: High-pressure cut-out switch
Explanation: The high-pressure cut-out switch opens the control circuit when discharge pressure exceeds a safe limit, shutting down the compressor.
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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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