Refrigeration & Air Conditioning Mechanic Red Seal · Question
When troubleshooting a refrigeration system with high suction pressure and high discharge pressure, a possible cause could be:
Non-condensables (like air) increase both suction and discharge pressures as they occupy space within the system that should be refrigerant.
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Question: When troubleshooting a refrigeration system with high suction pressure and high discharge pressure, a possible cause could be:
Answer options: ✅ Non-condensables in the system
- Undercharge of refrigerant
- Clogged liquid line filter drier
- Failed expansion valve
Correct answer: Non-condensables in the system
Explanation: Non-condensables (like air) increase both suction and discharge pressures as they occupy space within the system that should be refrigerant.
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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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