MACS 609 CERTIFICATION
EXAMS WITH 100% SOLUTIONS
If lubricant is removed by recovery equipment during system refrigerant
removal, what must be done with the lubricant? - 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? - 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? - 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? - ANSWER-Accumulator type
Electronic leak detectors certified to SAE J2791 have the capacity of
identifying leakage rates as low as: - 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? - ANSWER-Generally, very little, if any
Why is it necessary to insure that service port caps containing good seals are
installed? - ANSWER-To minimize refrigerant loss
EXAMS WITH 100% SOLUTIONS
If lubricant is removed by recovery equipment during system refrigerant
removal, what must be done with the lubricant? - 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? - 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? - 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? - ANSWER-Accumulator type
Electronic leak detectors certified to SAE J2791 have the capacity of
identifying leakage rates as low as: - 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? - ANSWER-Generally, very little, if any
Why is it necessary to insure that service port caps containing good seals are
installed? - ANSWER-To minimize refrigerant loss
