Question 34Refrigeration/AC - Assistant Engineer70% to pass
If you find the pressure of a refrigeration system containing a Class I or Class II refrigerant to be opened for the accomplishment of repairs is 0 psig, what must be done?
AI Explanation
The correct answer is C) do not attempt to recover any refrigerant and repair the leak before pulling a vacuum on the system.
This is the correct answer because if the pressure in the refrigeration system is 0 psig, it indicates that the system is completely depressurized and has a significant leak. In this case, the proper procedure is to first repair the leak without attempting to recover any refrigerant. Recovering refrigerant from a system with a leak could lead to the release of refrigerant to the atmosphere, which is prohibited under environmental regulations.
The other options are incorrect because recovering liquid or vapor refrigerant from a system with a 0 psig pressure would not be the appropriate first step. The leak must be repaired before attempting to pull a vacuum and recharge the system with refrigerant.
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