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MACS 609 CERTIFICATION QUESTIONS WITH COMPLETE SOLUTIONS(100%PASS!!!)
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MACS 609 CERTIFICATION QUESTIONS WITH COMPLETE SOLUTIONS(100%PASS!!!) 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 don...

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  • August 5, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • macs 609 certification questions with complete sol

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  • Course NSG 6440 Predictor
  • Course NSG 6440 Predictor

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MACS 609 CERTIFICATION QUESTIONS
WITH COMPLETE
SOLUTIONS(100%PASS!!!)
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

When recovery/recycling equipment is used to remove refrigerant from a mobile A/C
system, how much lubricant will be removed during the operation? - correct answer...✔
✔Generally, very little, if any

Why is it necessary to insure that service port caps containing good seals are installed?
- correct answer...✔✔To minimize refrigerant loss

Which of the following statements is correct about flushing A/C systems? - correct
answer...✔✔Flushing solvents may remain in A/C systems, causing problems

When using an HFC-134a refrigerant recovery machine, after competing the first
recovery process, how long must you wait, then check the machine's gauges for a rise
in pressure above vacuum, which would indicate that the system still contains some
refrigerant? - correct answer...✔✔5 minutes

Which type of tank must be used during the transfer of refrigerant? - correct answer...✔
✔Question 10 options:
Tanks marked DOT 4BA



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