MACS 609 CERTIFICATION EXAM QUESTIONS AND ANSWERS
(VERIFIED ANSWERS) (LATEST UPDATE 2025) UPDATE!!
5
After initial recovery procedures, if additional recovery is
2
required, repeat the process until the A/C system vacuum
remains stable for ____________________ minuites.
When checking a cylinder of recycled R-134a for non condensable
76 psig
gases at 70 degrees F the pressure should not exceed
PAG or POE The lubricant used with HFC-134a is
Affinity Refrigerant oil that is hygroscopic has a high for water.
27,500 Violation of Section 609 of the clean air act may result in fine per violation.
Nov. 15 1995 HFC-134a must be recovered effective
Barrier When a blend contains HCFC-22 all hoses must be replaced with type
hoses
Used disposable refrigerant cylinders can be with other scrap Metal
Recycled
after
they are empty.
High, low and center service hoses must have shut-off valves within inches of
12
their service ends.
Empty refillable recovery tanks should be evacuated to inches of mercury
27
before being put into service.
UL or DOT Recovery cylinders must be _____ or approved.
liquid The proper method for charging a blended refrigerant is in the phase.
Remove refrigerant in any condition from a system and store it in
recover
an approved external container
Intentionally vent Must never _____ refrigerants into the atmosphere.
MVAC Motor Vehicle Air Conditioner
(VERIFIED ANSWERS) (LATEST UPDATE 2025) UPDATE!!
5
After initial recovery procedures, if additional recovery is
2
required, repeat the process until the A/C system vacuum
remains stable for ____________________ minuites.
When checking a cylinder of recycled R-134a for non condensable
76 psig
gases at 70 degrees F the pressure should not exceed
PAG or POE The lubricant used with HFC-134a is
Affinity Refrigerant oil that is hygroscopic has a high for water.
27,500 Violation of Section 609 of the clean air act may result in fine per violation.
Nov. 15 1995 HFC-134a must be recovered effective
Barrier When a blend contains HCFC-22 all hoses must be replaced with type
hoses
Used disposable refrigerant cylinders can be with other scrap Metal
Recycled
after
they are empty.
High, low and center service hoses must have shut-off valves within inches of
12
their service ends.
Empty refillable recovery tanks should be evacuated to inches of mercury
27
before being put into service.
UL or DOT Recovery cylinders must be _____ or approved.
liquid The proper method for charging a blended refrigerant is in the phase.
Remove refrigerant in any condition from a system and store it in
recover
an approved external container
Intentionally vent Must never _____ refrigerants into the atmosphere.
MVAC Motor Vehicle Air Conditioner
