Mac 609 certification - Study guides, Class notes & Summaries

MAC 609 CERTIFICATION QUESTIONS AND ANSWERS (100% CORRECT) LATEST 2023 If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant?Before reuse, what must be done with HFC-134a that has been recovered from a mobile A/C system using recovery-only equipment? When can HFC-134a become combustible in a mobile air conditioning system?Which type of mobile A/C system will usually require additional time / precautions to extract all the refri...

MAC 609 CERTIFICATION EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ MAC 609 CERTIFICATION EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+

With the recovery unit shut off wait atleast ________ minutes to determine if all refrigerant has been removed. Correct Answer: 5 After initial recovery procedures, if additional recovery is required, repeat the process until the A/C system vacuum remains stable for _____ minuites. Correct Answer: 2 When checking a cylinder of recycled R-134a for non condensable gases at 70 degrees F the pressure should not exceed Correct Answer: 76 psig The lubricant used with HFC-134a is Correct A...

MAC 609 CERTIFICATION EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ With the recovery unit shut off wait atleast ________ minutes to determine if all refrigerant has been removed. Correct Answer: 5 After initial recovery procedures, if additional recovery is required, repeat the process until the A/C system vacuum remains stable for _____ minuites. Correct Answer: 2 When checking a cylinder of recycled R-134a for non condensable gases at 70 degrees F the pressu...