Extra refrigerant in a system using a capillary tube will increase the risk that liquid refrigerant could be drawn into the________:

When extra refrigerant is introduced into a system that utilizes a capillary tube, the risk of liquid refrigerant being drawn into the compressor increases significantly. The capillary tube is designed to regulate the flow of refrigerant into the evaporator, and it is crucial that the refrigerant enters in the correct state.

Increased refrigerant levels can lead to liquid refrigerant flooding back from the evaporator due to improper expansion and pressure differentials within the system. If liquid refrigerant enters the compressor, it can cause several issues, such as liquid slugging, which may damage the compressor's internals, leading to failure. Compressors are designed to compress gas, and if liquid is introduced, it does not compress and can cause mechanical damage.

This situation emphasizes the importance of proper refrigerant charge and system balance, especially in systems that rely on capillary tubes for metering because these devices have no moving parts and operate based on pressure differences to control the flow of refrigerant. Careful attention to refrigerant levels helps maintain system efficiency and prevents damage to sensitive components like the compressor.