Which statement about receiver/driers is NOT true?

Receiver/driers play a crucial role in the refrigeration cycle of an air conditioning system, particularly in managing refrigerant in a way that ensures the efficiency and longevity of the system. The statement that they keep liquid refrigerant from entering the compressor is not true because that function is typically performed by a component known as the accumulator, which is specifically designed to separate and prevent liquid refrigerant from reaching the compressor.

In contrast, receiver/driers do store liquid refrigerant, which allows for a temporary holdover of refrigerant until it is needed by the system. They may also come equipped with sight glasses to provide a visual indication of refrigerant status and contain a desiccant to absorb moisture from the refrigerant, which is vital for preventing ice formation and protecting the system from corrosion.

Thus, while receiver/driers have many important functions in managing refrigerant in HVAC systems, the prevention of liquid refrigerant from entering the compressor is not one of them, making that statement the one that is not true.