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MACS 609 Certification Exam 2024/2025, Exams of Nursing

Detailed information about the macs 609 certification exam for the 2024/2025 academic year. It covers a wide range of topics related to mobile air conditioning systems, including refrigerant handling, recovery and recycling, leak detection, safety precautions, and regulatory requirements. The document offers accurate answers to various questions that may be asked in the certification exam, making it a valuable resource for individuals preparing for the exam. The content covers essential knowledge and skills required for technicians working on mobile air conditioning systems, ensuring they are equipped to handle these systems safely and effectively. This document could be particularly useful for university students pursuing courses in automotive engineering, hvac, or environmental sciences, as well as professionals in the mobile air conditioning industry seeking to obtain or maintain their macs 609 certification.

Typology: Exams

2023/2024

Available from 08/25/2024

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Download MACS 609 Certification Exam 2024/2025 and more Exams Nursing in PDF only on Docsity! MACS 609 CERTIFICATION EXAM 2024/2025 MACS 609 CERTIFICATION EXAM 2024/2025 WITH GUARANTEED ACCURATE ANSWERS |VERIFIED If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant? - ACCURATE ANSWERS✔✔ Re-install lubricant removed by the recovery equipment Before reuse, what must be done with HFC-134a that has been recovered from a mobile A/C system using recovery-only equipment? - ACCURATE ANSWERS✔✔ Question 2 options: Recycle the HFC-134a before reuse using certified equipment When can HFC-134a become combustible in a mobile air conditioning system? - ACCURATE ANSWERS✔✔ If shop air is used in the system in an attempt to check for leaks and HFC-134a is present Which type of mobile A/C system will usually require additional time / precautions to extract all the refrigerant? - ACCURATE ANSWERS✔✔ Accumulator type Electronic leak detectors certified to SAE J2791 have the capacity of identifying leakage rates as low as: - ACCURATE ANSWERS✔✔ 0.15 ounces per year When recovery/recycling equipment is used to remove refrigerant from a mobile A/C system, how much lubricant will be removed during the operation? - ACCURATE ANSWERS✔✔ Generally, very little, if any Why is it necessary to insure that service port caps containing good seals are installed? - ACCURATE ANSWERS✔✔ To minimize refrigerant loss Which of the following statements is correct about flushing A/C systems? - ACCURATE ANSWERS✔✔ Flushing solvents may remain in A/C systems, causing problems When using an HFC-134a refrigerant recovery machine, after competing the first recovery process, how long must you wait, then check the machine's gauges for a rise in pressure above vacuum, which would indicate that the system still contains some refrigerant? - ACCURATE ANSWERS✔✔ 5 minutes Which type of tank must be used during the transfer of refrigerant? - ACCURATE ANSWERS✔✔ Question 10 options: Tanks marked DOT 4BA When it has been determined that an A/C system has a low refrigerant charge, what should be done? - ACCURATE ANSWERS✔✔ Perform a leak detection procedure One effect of some refrigerant gases in the atmosphere is that they: - ACCURATE ANSWERS✔✔ Contribute to trapping heat