Refrigeration & Air Conditioning Mechanic Red Seal · Question
Which safety device is designed to open a circuit when system pressure exceeds a predetermined safe limit in a refrigeration system?
High-pressure switches are safety devices that de-energize the compressor if discharge pressure gets too high, protecting the system from damage.
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Question: Which safety device is designed to open a circuit when system pressure exceeds a predetermined safe limit in a refrigeration system?
Answer options: ✅ High-pressure switch
- Low-pressure switch
- Thermal overload
- Oil pressure safety switch
Correct answer: High-pressure switch
Explanation: High-pressure switches are safety devices that de-energize the compressor if discharge pressure gets too high, protecting the system from damage.
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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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