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MACS Certification Exam Questions and Answers (Graded A)MACS Certification Exam Questions and Answers (Graded A)MACS Certification Exam Questions and Answers (Graded A)MACS Certification Exam Questions and Answers (Graded A) If the mechanic's gauges rise from a vacuum to pressure, what is required? - ANSWER-Additional recovery What is the only way to fully clear moisture from the A/C system? - ANSWER-Replacing the desiccant Pressure ______ the boiling point - ANSWER-Raises Vacuum __...

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This in-depth, exam-focused document is designed for candidates preparing for the Mobile Air Conditioning Society (MACS) Section 609 Certification Exam for the 2025/2026 cycle. It includes 100+ fully answered and updated multiple-choice questions, all aligned with the latest U.S. EPA requirements and MACS certification standards for motor vehicle air conditioning (MVAC) service. This guide covers both technical procedures and regulatory compliance topics, making it ideal for technicians seeki...

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8 pages

Written in 2025/2026

Grade A+

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MACS Certification Exam Questions and Answers If the mechanic's gauges rise from a vacuum to pressure, what is required? - Answer-Additional recovery What is the only way to fully clear moisture from the A/C system? - Answer-Replacing the desiccant Pressure ______ the boiling point - Answer-Raises Vacuum _______ the boiling point - Answer-Lowers What should you do when replacing hoses? - Answer-Make sure you have the correct type/size of tubing What does GWP stand for? - Ans...

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4 pages

Written in 2024/2025

Grade A+

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If the mechanic's gauges rise from a vacuum to pressure, what is required? - ANSWERAdditional recovery What is the only way to fully clear moisture from the A/C system? - ANSWERReplacing the desiccant Pressure ______ the boiling point - ANSWERRaises Vacuum _______ the boiling point - ANSWERLowers HFO-1234yf is classified by ASHRAE as what? - ANSWERA2L- mildly flammable R-744 systems operate at ___ to ___ times higher than HFC-134a and HFC-152a systems. - ANSWER5 to 10 HFC-15...

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4 pages

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4 pages

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Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants Nov 15, 1995 R-134a is a chlorine-free refrigerant True Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:05 / 0:15 Full screen Brainpower Read More Since ________, it is no longer legal for CFCs to be manufactured or imported into the United States Jan 1, 1996 A refillable refrigerant cylinder must not be filled above ______ of its full capacity. 80% Section...

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