Refrigeration & Air Conditioning Mechanic Red Seal · Question
What is the significance of a high discharge temperature in a refrigeration system, assuming normal operating pressures?
High discharge temperature, despite normal pressures, can indicate issues such as higher-than-normal superheat entering the compressor (due to low refrigerant c
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Question: What is the significance of a high discharge temperature in a refrigeration system, assuming normal operating pressures?
Answer options:
- Indicates overcharged refrigerant
- Suggests excellent compressor efficiency ✅ May point to high suction superheat, restricted suction line, or insufficient compressor cooling
- Always means the condenser is dirty
Correct answer: May point to high suction superheat, restricted suction line, or insufficient compressor cooling
Explanation: High discharge temperature, despite normal pressures, can indicate issues such as higher-than-normal superheat entering the compressor (due to low refrigerant charge or restricted suction) or a compressor running hot due to lack of cooling or mechanical issues.
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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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