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EPA Type 2 Questions and Answers | Latest Version | 2024/2025 | Already Passed
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EPA Type 2 Questions and Answers | Latest Version | 2024/2025 | Already Passed What substance should be used to detect leaks in heat pumps converted from R22 to R407C? Pressurized nitrogen gas After assembling a new refrigeration system, what is the first step? Pressurize it with an iner...
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