MACS 609 CERTIFICATION Questions
and Answers 2026/2027 With 100%
Complete Solutions.
One effect of some refrigerant gases in the atmosphere is that they: - CORRECT
ANSWER -Contribute to trapping heat
Mixing CFC-12 and HFC-134a in the same system will: - CORRECT ANSWER -Result
in refrigerant cross contamination
How much moisture is removed from a mobile A/C system during a typical
evacuation? - CORRECT ANSWER -Possibly none
Paid technicians who service or repair mobile A/C systems using HFC-22 as
refrigerant, or service cargo refrigeration equipment: - CORRECT ANSWER -Must
be Section 608 Type II certified
HFO-1234yf is classified as "A2L-mildly flammable." This means: - CORRECT
ANSWER -It can ignite under certain circumstances
, Section 609 of the Clean Air Act requires that recovery/recycling equipment: -
CORRECT ANSWER -Must be registered with the EPA
What is the advantage of using refrigerant identification equipment? - CORRECT
ANSWER -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: - CORRECT ANSWER -Make sure the compressor is
operating
If a large amount of lubricant is removed from a system during refrigerant
recovery: - CORRECT ANSWER -The system likely contained too much lubricant
PAG lubricant: - CORRECT ANSWER -Is hygroscopic (absorbs moisture)
Specific safety information for managing incidents involving refrigerants and other
chemicals (inhalation, spills, fires, etc) is found in the: - CORRECT ANSWER -
Material safety data sheet (MSDS) for the chemical
and Answers 2026/2027 With 100%
Complete Solutions.
One effect of some refrigerant gases in the atmosphere is that they: - CORRECT
ANSWER -Contribute to trapping heat
Mixing CFC-12 and HFC-134a in the same system will: - CORRECT ANSWER -Result
in refrigerant cross contamination
How much moisture is removed from a mobile A/C system during a typical
evacuation? - CORRECT ANSWER -Possibly none
Paid technicians who service or repair mobile A/C systems using HFC-22 as
refrigerant, or service cargo refrigeration equipment: - CORRECT ANSWER -Must
be Section 608 Type II certified
HFO-1234yf is classified as "A2L-mildly flammable." This means: - CORRECT
ANSWER -It can ignite under certain circumstances
, Section 609 of the Clean Air Act requires that recovery/recycling equipment: -
CORRECT ANSWER -Must be registered with the EPA
What is the advantage of using refrigerant identification equipment? - CORRECT
ANSWER -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: - CORRECT ANSWER -Make sure the compressor is
operating
If a large amount of lubricant is removed from a system during refrigerant
recovery: - CORRECT ANSWER -The system likely contained too much lubricant
PAG lubricant: - CORRECT ANSWER -Is hygroscopic (absorbs moisture)
Specific safety information for managing incidents involving refrigerants and other
chemicals (inhalation, spills, fires, etc) is found in the: - CORRECT ANSWER -
Material safety data sheet (MSDS) for the chemical
