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MACS 609 CERTIFICATION questions with correct answers

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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-o...

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  • June 22, 2023
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  • 2022/2023
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  • macs 609 certification questions with correct answ

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MACS 609 CERTIFICATION questions
with correct 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
When can HFC-134a become combustible in a mobile air conditioning system? - 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? - Answer Accumulator type
Electronic leak detectors certified to SAE J2791 have the capacity of identifying leakage rates as low as: - Answer 0.15 ounces per year
When recovery/recycling equipment is used to remove refrigerant from a mobile A/C system, how much lubricant will be removed during the operation? - Answer Generally, very little, if any
Why is it necessary to insure that service port caps containing good seals are installed? - Answer To minimize refrigerant loss

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