MACS 609 CERTIFICATION UPDATED ACTUAL Questions and CORRECT
Answers
low refrigerant charge, what should be done?
If lubricant is removed by recovery equipment during
system refrigerant removal, what must be done with the
lubricant?
Before reuse, what must be done with HFC-134a that has
been recovered from a mobile A/C system using recov-
ery-only equipment?
When can HFC-134a become combustible in a mobile air
conditioning system?
Which type of mobile A/C system will usually require ad-
ditional time / precautions to extract all the refrigerant?
Electronic leak detectors certified to SAE J2791 have the
capacity of identifying leakage rates as low as:
When recovery/recycling equipment is used to remove
refrigerant from a mobile A/C system, how much lubricant
will be removed during the operation?
Why is it necessary to insure that service port caps con-
taining good seals are installed?
Which of the following statements is correct about flush-
ing A/C systems?
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?
Which type of tank must be used during the transfer of
refrigerant?
When it has been determined that an A/C system has a
Answers
low refrigerant charge, what should be done?
If lubricant is removed by recovery equipment during
system refrigerant removal, what must be done with the
lubricant?
Before reuse, what must be done with HFC-134a that has
been recovered from a mobile A/C system using recov-
ery-only equipment?
When can HFC-134a become combustible in a mobile air
conditioning system?
Which type of mobile A/C system will usually require ad-
ditional time / precautions to extract all the refrigerant?
Electronic leak detectors certified to SAE J2791 have the
capacity of identifying leakage rates as low as:
When recovery/recycling equipment is used to remove
refrigerant from a mobile A/C system, how much lubricant
will be removed during the operation?
Why is it necessary to insure that service port caps con-
taining good seals are installed?
Which of the following statements is correct about flush-
ing A/C systems?
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?
Which type of tank must be used during the transfer of
refrigerant?
When it has been determined that an A/C system has a
