MACS 609 CERTIFICATION questions with
verified correct answers Latest Update
2024
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
7.Why is it necessary to insure that service port caps containing good seals
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verified correct answers Latest Update
2024
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
7.Why is it necessary to insure that service port caps containing good seals
Ask for various Exams or Study materials from ()
