Refrigeration & Air Conditioning Mechanic Red Seal · Question
Which type of oil is commonly used with HCFC refrigerants like R-22?
Mineral oil is traditionally used with HCFC refrigerants like R-22 due to its good miscibility with these refrigerants.
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Question: Which type of oil is commonly used with HCFC refrigerants like R-22?
Answer options:
- POEs (Polyolester)
- Alkylbenzene (AB)
- PAGs (Polyalkylene Glycol) ✅ Mineral oil (MO)
Correct answer: Mineral oil (MO)
Explanation: Mineral oil is traditionally used with HCFC refrigerants like R-22 due to its good miscibility with these refrigerants.
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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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