Refrigeration & Air Conditioning Mechanic Red Seal · Question
Refrigerant must be recovered before:
Environmental regs (e.g., Ozone-Depleting Substances Regs).
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Question: Refrigerant must be recovered before:
Answer options: ✅ Opening a sealed refrigeration circuit
- Adding oil
- Cleaning coils
- Replacing filter drier on a closed system
Correct answer: Opening a sealed refrigeration circuit
Explanation: Environmental regs (e.g., Ozone-Depleting Substances Regs).
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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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