A technician is checking the evaporator for leaks on an R-134a refrigerant system.Technician A says that it is acceptable to use shop air to pressurize the system and use an electrnic microphone to listen for leakage.Technician B says that it is acceptable to charge the system with R-134a and then insert the elctronic leak detector probe in the evaporator drain.Who is correct? A) Technician A only B) Technician B only C) Both A and B D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician B's method of charging the system with R-134a and then using an electronic leak detector probe in the evaporator drain is an acceptable practice for detecting leaks in the system. Using shop air to pressurize the system, as suggested by Technician A, is not recommended due to the risk of moisture and air contamination in the refrigerant system.

A Technician Is Checking the Evaporator for Leaks on an R-134a