Refrigeration & Air Conditioning Mechanic Red Seal · Question
What is the primary purpose of a crankcase heater in a refrigeration compressor?
The crankcase heater warms the compressor oil, preventing refrigerant from migrating to and condensing in the cold oil during off-cycles, which would dilute the
Start free practice for Refrigeration & Air Conditioning Mechanic Red Seal
500 questions · no signup required · 40 free questions per day
Question: What is the primary purpose of a crankcase heater in a refrigeration compressor?
Answer options: ✅ Prevent refrigerant migration and oil dilution
- Increase compressor efficiency
- Reduce compressor starting current
- Lubricate internal components
Correct answer: Prevent refrigerant migration and oil dilution
Explanation: The crankcase heater warms the compressor oil, preventing refrigerant from migrating to and condensing in the cold oil during off-cycles, which would dilute the oil.
Start free practice for Refrigeration & Air Conditioning Mechanic Red Seal
500 questions · no signup required · 40 free questions per day
More about Refrigeration & Air Conditioning Mechanic Red Seal
Related Questions
- 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
- Which type of electric motor requires a capacitor for starting and running, offering higher efficiency and bet
- When evacuating a refrigeration system, what is the recommended deep vacuum level, typically measured in micro
More for Refrigeration & Air Conditioning Mechanic Red Seal candidates
FAQs
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
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Refrigeration & Air Conditioning Mechanic Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.