MACS 609 CERTIFICATION QUESTIONS WITH
VERIFIED CORRECT ANSWERS GUARANTEED
PASS GRADED A+
1. 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
2. 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:Answer: Recycle the HFC-134a
before reuse using certified equipment
3. When can HFC-134a become combustible in a mobile air conditioning
sys- tem?:Answer: If shop air is used in the system in an attempt to check
for leaks and HFC-134a is present
4. Which type of mobile A/C system will usually require additional time
/ precautions to extract all the refrigerant?:Answer: Accumulator type
5. Electronic leak detectors certified to SAE J2791 have the capacity of
iden- tifying leakage rates as low as:Answer::Answer: 0.15 ounces per year
6. When recovery/recycling equipment is used to remove refrigerant from a
mobile A/C system, how much lubricant will be removed during the opera-
tion?:Answer: Generally, very little, if any
excellence
VERIFIED CORRECT ANSWERS GUARANTEED
PASS GRADED A+
1. 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
2. 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:Answer: Recycle the HFC-134a
before reuse using certified equipment
3. When can HFC-134a become combustible in a mobile air conditioning
sys- tem?:Answer: If shop air is used in the system in an attempt to check
for leaks and HFC-134a is present
4. Which type of mobile A/C system will usually require additional time
/ precautions to extract all the refrigerant?:Answer: Accumulator type
5. Electronic leak detectors certified to SAE J2791 have the capacity of
iden- tifying leakage rates as low as:Answer::Answer: 0.15 ounces per year
6. When recovery/recycling equipment is used to remove refrigerant from a
mobile A/C system, how much lubricant will be removed during the opera-
tion?:Answer: Generally, very little, if any
excellence
