Question 52Refrigeration & AC - 1st Asst/Chief

The correct answer is D) do not attempt to recover the refrigerant and repair the leak before pulling a vacuum on the system. This is the correct answer because if the pressure of a refrigeration system containing a Class I or Class II refrigerant is 0 psig, it indicates that the system is completely depressurized, which means there is a leak in the system. In this case, the proper procedure is to first repair the leak before attempting to recover the refrigerant, as recovering the refrigerant from a depressurized system could lead to the release of the refrigerant into the atmosphere, which is not allowed. The other options are incorrect because recovering only the vapor or liquid refrigerant or recovering both the liquid and vapor refrigerant without first repairing the leak would not address the root cause of the issue and could result in the release of the refrigerant, which is a violation of environmental regulations.