Macs certification - Study guides, Class notes & Summaries

MACS 609 CERTIFICATION EXAM QUESTIONS & ANSWERS CORRECT 100% The use of ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system is: - answers Approved by some vehicle manufactures but not by others One effect of some refrigerant gases in the atmosphere is that they: - answers Contribute to trapping heat Which item is not mentioned in the SAE J2099 Standard of refrigerant purity? - answers Sludge When it has been determined that an A/C system has a low refrigerant charge, what s...

If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant? - Answer 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? - Answer Question 2 options: Recycle the HFC-134a before reuse using certified equipment When can HFC-134a become combustible in a mobile air conditioning system? - Answer If shop air ...

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? - Answer Global Warming Potential ...

MACS CERTIFICATION QUESTIONS AND ANSWERS

MACS CERTIFICATION QUESTIONS AND ANSWERS

If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant? - Answer 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? - Answer Question 2 options: Recycle the HFC-134a before reuse using certified equipment

MACS Certification Exam With 100% Correct Answers 2024

MACS Certification; Questions and Answers 100% Verified If the mechanic's gauges rise from a vacuum to pressure, what is required? Correct answer-Additional recovery What is the only way to fully clear moisture from the A/C system? Correct answerReplacing the desiccant Pressure ______ the boiling point Correct answer-Raises Vacuum _______ the boiling point Correct answer-Lowers What should you do when replacing hoses? Correct answer-Make sure you have the correct type/size of tubing...

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 __...

HFC-152a is ___ - Correct Answer flammable What are the 2 types of HFC-152a systems? - Correct Answer Direct expansion and secondary loop type Direct Expansion - Correct Answer Refrigerant directly expands within the evaporator that is located inside the passenger compartment Secondary Loop (Open Loop) - Correct Answer A circulating non-flammable fluid replaces the evaporator which provides isolation between the flammable refrigerant and the passenger compartment Section 609 of the C...