When servicing an air conditioning system that has lost all of its Freon, it is necessary to Question 37 options check oil and add as necessary, evacuate the system, relieve vacuum, and add Freon check oil and add as necessary, evacuate the system, and add Freon check oil and add as necessary, and add Freon

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When servicing an air conditioning system that has lost all of its Freon, it is necessary to Question 37 options  check oil and add as necessary, evacuate the system, relieve vacuum, and add Freon  check oil and add as necessary, evacuate the system, and add Freon  check oil and add as necessary, and add Freon

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Question: When servicing an air conditioning system that has lost all of its Freon, it is necessary to Question 37 options: check oil and add as

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