MACS 609 CERTIFICATION Exam
Questions and Answers Graded A+
If lubricant is removed by recovery equipment during system refrigerant removal,
what must be done with the lubricant? - Correct 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? - Correct 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? -
Correct answer-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? - Correct answer-Accumulator type
Electronic leak detectors certified to SAE J2791 have the capacity of identifying
leakage rates as low as: - Correct answer-0.15 ounces per year
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
Questions and Answers Graded A+
If lubricant is removed by recovery equipment during system refrigerant removal,
what must be done with the lubricant? - Correct 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? - Correct 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? -
Correct answer-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? - Correct answer-Accumulator type
Electronic leak detectors certified to SAE J2791 have the capacity of identifying
leakage rates as low as: - Correct answer-0.15 ounces per year
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
