Refrigeration & Air Conditioning Mechanic Red Seal · Question
What safety device is designed to protect a refrigeration system from excessive discharge pressure?
A high pressure control will shut down the compressor if the discharge pressure exceeds a safe limit, preventing damage to components.
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Question: What safety device is designed to protect a refrigeration system from excessive discharge pressure?
Answer options:
- Low pressure control ✅ High pressure control
- Oil pressure differential control
- Thermal overload
Correct answer: High pressure control
Explanation: A high pressure control will shut down the compressor if the discharge pressure exceeds a safe limit, preventing damage to components.
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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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