Refrigeration & Air Conditioning Mechanic Red Seal · Question
When performing a leak test with nitrogen, what is the maximum pressure typically recommended for most refrigeration systems?
It's crucial to not exceed the design pressure of the lowest-rated component on the high side of the system during a nitrogen leak test.
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Question: When performing a leak test with nitrogen, what is the maximum pressure typically recommended for most refrigeration systems?
Answer options:
- 50 psig
- 150 psig
- The system's low-side test pressure limit ✅ The system's high-side test pressure limit
Correct answer: The system's high-side test pressure limit
Explanation: It's crucial to not exceed the design pressure of the lowest-rated component on the high side of the system during a nitrogen leak test.
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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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