Refrigeration & Air Conditioning Mechanic Red Seal · Question
When performing a leak check on an R-410A system, which type of leak detector is generally recommended for its sensitivity and reliability for HFC refrigerants?
For HFC refrigerants like R-410A, a heated diode or infrared electronic leak detector is highly recommended due to its superior sensitivity and ability to detec
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Question: When performing a leak check on an R-410A system, which type of leak detector is generally recommended for its sensitivity and reliability for HFC refrigerants?
Answer options:
- Soapy bubble solution
- Halide torch detector ✅ Heated diode electronic leak detector
- Ultrasonic leak detector
Correct answer: Heated diode electronic leak detector
Explanation: For HFC refrigerants like R-410A, a heated diode or infrared electronic leak detector is highly recommended due to its superior sensitivity and ability to detect small leaks. Soapy water is for general checks, halide torches are being phased out due to open flame and less precise detection, and ultrasonic detectors are for pressure changes, not specific refrigerant detection.
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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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