61. To change the compressor on a system containing 40 pounds R-500, using a recycling machine that was manufactured AFTER November 15, 1993, you must isolate the compressor then:

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evacuate the isolated section of the system to 10 inches of vacuum and hold. if system pressure does not rise, remove the compressor.

61. To change the compressor on a system containing 40 pounds R-500, using a recycling machine that was manufactured AFTER November 15, 1993, you must isolate the compressor then:

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