Refrigeration & Air Conditioning Mechanic Red Seal · Question
A refrigeration system with a total charge of 4.5 kg of R-404A is experiencing high superheat at the evaporator outlet, suggesting a low refrigerant charge. The service technician decides to weigh in the exact charge. How much refrigerant should be added if the system was completely evacuated and is being recharged?
When recharging a system after a complete evacuation, the precise manufacturer's specified charge, which is 4.5 kg in this case, must be weighed in. This ensure
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Question: A refrigeration system with a total charge of 4.5 kg of R-404A is experiencing high superheat at the evaporator outlet, suggesting a low refrigerant charge. The service technician decides to weigh in the exact charge. How much refrigerant should be added if the system was completely evacuated and is being recharged?
Answer options: ✅ 4.5 kg
- 4.0 kg
- 5.0 kg
- 3.5 kg
Correct answer: 4.5 kg
Explanation: When recharging a system after a complete evacuation, the precise manufacturer's specified charge, which is 4.5 kg in this case, must be weighed in. This ensures optimal system performance and avoids over- or under-charging issues.
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- 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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