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MACS 609 CERTIFICATION Questions with Correct Answers| verified 2024, Exams of Communication

MACS 609 CERTIFICATION Questions with Correct Answers| verified 2024 If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant? Re-install lubricant removed by the recovery equipment

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2023/2024

Available from 06/01/2024

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MACS 609 CERTIFICATION
Questions with Correct
Answers| verified
If lubricant is removed by recovery equipment during system
refrigerant removal, what must be done with the lubricant?
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?
Question 2 options:
Recycle the HFC-134a before reuse using certified equipment
When can HFC-134a become combustible in a mobile air conditioning
system?
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?
Accumulator type
Electronic leak detectors certified to SAE J2791 have the
capacity of identifying leakage rates as low as:
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?
Generally, very little, if any
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MACS 609 CERTIFICATION

Questions with Correct

Answers| verified

If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant? 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? Question 2 options: Recycle the HFC-134a before reuse using certified equipment When can HFC-134a become combustible in a mobile air conditioning system? 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? Accumulator type Electronic leak detectors certified to SAE J2791 have the capacity of identifying leakage rates as low as: 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? Generally, very little, if any

Possibly none Paid technicians who service or repair mobile A/C systems using HFC-22 as refrigerant, or service cargo refrigeration equipment: Must be Section 608 Type II certified HFO-1234yf is classified as "A2L-mildly flammable." This means: It can ignite under certain circumstances Section 609 of the Clean Air Act requires that recovery/recycling equipment: Must be registered with the EPA What is the advantage of using refrigerant identification equipment? Allows the ability to determine what type of refrigerant is in system When performing engine pre-heat for refrigerant removal, the technician should do ALL of the following EXCEPT: Make sure the compressor is operating If a large amount of lubricant is removed from a system during refrigerant recovery: The system likely contained too much lubricant PAG lubricant: Is hygroscopic (absorbs moisture) Specific safety information for managing incidents involving

refrigerants and other chemicals (inhalation, spills, fires, etc) is found in the: Material safety data sheet (MSDS) for the chemical