MACS 609 CERTIFICATION questions and
answers graded A+
1. If lubricant is removed by recovery equipment during Re-install
lubricant re-
system refrigerant removal, what must be done moved by the recovery
with the lubricant? equipment
2. Before reuse, what must be done with HFC-134a
Question 2 options: Recycle
that has been recovered from a mobile A/C the HFC-134a be- fore
system using recovery-only equipment? reuse using certified
equipment
3. When can HFC-134a become combustible in a mobile If shop air is
used in the sys-
air conditioning system? about
flushing
A/C
systems?
4. Which type of mobile A/C system will usually
require additional time / precautions to extract
all the refrig- erant?
5. Electronic leak detectors certified to SAE J2791
have the capacity of identifying leakage
rates as low as:
6. When recovery/recycling equipment is used
to re- move refrigerant from a mobile A/C
system, how much lubricant will be removed
during the operation?
7. Why is it necessary to insure that service port
caps containing good seals are installed?
8. Which of the following statements is correct
1/
5
, MACS 609 CERTIFICATION questions and
answers graded A+
em in an attempt to check for leaks and HFC-134a is present
ccumulator type
minimize refrigerant loss
.15 ounces per year Flushing solvents may re-
main in A/C systems, caus-
ing problems
enerally, very little, if any
9. 5 minutes
2/
5
answers graded A+
1. If lubricant is removed by recovery equipment during Re-install
lubricant re-
system refrigerant removal, what must be done moved by the recovery
with the lubricant? equipment
2. Before reuse, what must be done with HFC-134a
Question 2 options: Recycle
that has been recovered from a mobile A/C the HFC-134a be- fore
system using recovery-only equipment? reuse using certified
equipment
3. When can HFC-134a become combustible in a mobile If shop air is
used in the sys-
air conditioning system? about
flushing
A/C
systems?
4. Which type of mobile A/C system will usually
require additional time / precautions to extract
all the refrig- erant?
5. Electronic leak detectors certified to SAE J2791
have the capacity of identifying leakage
rates as low as:
6. When recovery/recycling equipment is used
to re- move refrigerant from a mobile A/C
system, how much lubricant will be removed
during the operation?
7. Why is it necessary to insure that service port
caps containing good seals are installed?
8. Which of the following statements is correct
1/
5
, MACS 609 CERTIFICATION questions and
answers graded A+
em in an attempt to check for leaks and HFC-134a is present
ccumulator type
minimize refrigerant loss
.15 ounces per year Flushing solvents may re-
main in A/C systems, caus-
ing problems
enerally, very little, if any
9. 5 minutes
2/
5
