Refrigeration & Air Conditioning Mechanic Red Seal · Question
An access fitting (Schrader valve) cap on a refrigeration system is designed to:
The cap on a Schrader valve provides a secondary seal, preventing refrigerant loss if the primary valve core seal leaks.
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Question: An access fitting (Schrader valve) cap on a refrigeration system is designed to:
Answer options: ✅ Prevent refrigerant leakage if the valve core fails
- Indicate the type of refrigerant in the system
- Provide a point for pressure readings only
- Allow for easy removal of the valve core
Correct answer: Prevent refrigerant leakage if the valve core fails
Explanation: The cap on a Schrader valve provides a secondary seal, preventing refrigerant loss if the primary valve core seal leaks.
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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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