Refrigeration & Air Conditioning Mechanic Red Seal · Question
When performing a deep vacuum on a refrigeration system, what is the primary purpose?
A deep vacuum removes non-condensable gases, which can increase head pressure and reduce efficiency, and boils off moisture, preventing the formation of acids a
Start free practice for Refrigeration & Air Conditioning Mechanic Red Seal
500 questions · no signup required · 40 free questions per day
Question: When performing a deep vacuum on a refrigeration system, what is the primary purpose?
Answer options:
- To pressurize the system for leak detection ✅ To remove non-condensable gases and moisture (water vapor)
- To check the compressor's pumping capacity
- To flush out system debris
Correct answer: To remove non-condensable gases and moisture (water vapor)
Explanation: A deep vacuum removes non-condensable gases, which can increase head pressure and reduce efficiency, and boils off moisture, preventing the formation of acids and ice in the system.
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.