Question 28Refrigeration & AC - Assistant Engineer

The correct answer is A) when charging as a liquid it should be to the high side only. When charging a vapor compression refrigerating system, the refrigerant should be charged as a liquid into the high side of the system. This ensures that the refrigerant enters the system in a stable, condensed state, preventing issues like slugging or liquid floodback that can occur if charged to the low side. Charging as a vapor directly to the receiver is not recommended, as this can lead to an uneven distribution of refrigerant in the system. The other options, such as charging liquid to the low side, are incorrect as they do not follow best practices for proper refrigerant charging.