Refrigeration & Air Conditioning Mechanic Red Seal · Question
What is the primary safety concern associated with R-717 (Ammonia) as a refrigerant?
Ammonia is highly toxic and flammable, requiring stringent safety precautions.
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Question: What is the primary safety concern associated with R-717 (Ammonia) as a refrigerant?
Answer options: ✅ Toxicity and flammability
- High Global Warming Potential (GWP)
- Ozone Depletion Potential (ODP)
- Corrosive to copper
Correct answer: Toxicity and flammability
Explanation: Ammonia is highly toxic and flammable, requiring stringent safety precautions.
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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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