Refrigeration & Air Conditioning Mechanic Red Seal · Question
According to Canadian safety standards, what is an acceptable method for leak testing a charging cylinder (recovery tank) connection?
Using soapy water (bubble solution) or an electronic leak detector are safe and effective methods for pinpointing leaks in connections. Open flames are extremel
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Question: According to Canadian safety standards, what is an acceptable method for leak testing a charging cylinder (recovery tank) connection?
Answer options:
- Using a lit torch to check for flame colour change ✅ Applying soapy water or an electronic leak detector
- Pressurizing the cylinder to 1500 psi (10,342 kPa) and listening for a hiss
- Inspecting for visible refrigerant vapor
Correct answer: Applying soapy water or an electronic leak detector
Explanation: Using soapy water (bubble solution) or an electronic leak detector are safe and effective methods for pinpointing leaks in connections. Open flames are extremely dangerous, over-pressurizing can cause rupture, and vapor is not always visible or indicative of a small leak.
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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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