Where is the sight glass located according to Technician A and Technician B?

The sight glass is a crucial component in refrigeration and air conditioning systems. It allows technicians to visually check the refrigerant flow and diagnose issues within the system. Typically, the sight glass is located in the liquid line, which is the line that carries refrigerant in a liquid form after it has been condensed.

In this context, if Technician B describes a correct location for the sight glass—suggesting, for example, that it is situated after the filter drier and before the expansion device—this would indicate a proper understanding of its placement. This arrangement allows for monitoring the refrigerant state before it enters the evaporator.

If Technician A's description does not align with the standard placement, such as indicating an incorrect location or a non-standard aspect of the system, it serves to further validate Technician B's correct information. Therefore, when assessing both technicians, Technician B offers the accurate location for the sight glass, resulting in the choice being validated as the correct answer.