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MACS 609 CERTIFICATION EXAM
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MACS 609 CERTIFICATION EXAM
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MACS 609 CERTIFICATION EXAMThe age of the vehicle
Which of the following is not a true factor in how much refrigerant can be recovered
from a A/C system?
To minimize refrigerant loss
Why is it important to make sure that the service port caps are not damaged when
reinstalling them?
Dispose of it in accordance with federal, state, local requirements
What must be done with the lubricant once it is removed by the recovery equipment?
Any light vehicle with an air conditioning system designed to use it
What types of vehicles can HFO-1234yf be used in?
0.15 ounces per year
SAE standard J2791 electronic leak detectors requires improved standards to have the
capability to identifying leakage rates as low as:
Flushing solvents may remain in A/C systems, causing problems
Which of the following statements are true about flushing A/C systems?
Recycle the HFC-134a before reuse using certified equipment
Before it can be reused, the refrigerant must be recycled through use of a mobile A/C
system using recovery-only equipment.
The refrigerant may only be used in new vehicles with components specifically designed
for it
What is "acceptable" classification of HFO-1234yf according to the U.S. EPA?
Generally, very little, if any
How much lubricant will be removed when using a recovery/recycling equipment to
remove refrigerant from a mobile A/C system?
Accumulator type
What type of mobile A/C system will require more time and precautions to extract all the
refrigerant?
Approved by some vehicle manufactures but not by others
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