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Architecture
9th -
12thgrade
Refrigerant Recovery and Recycling Quiz
30 questions
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- 1. Multiple Choice
The recovery process on an R-12 or R-134a A/C system should continue until a stable vacumm is held by the system for:
1 minute
2 minutes.
4 minutes.
5 minutes.
- 2. Multiple Choice
A recycled refrigerant container has been checked and found to be above the given pressure limit for the ambient temperature.
Technician A: Says that the refrigerant container should be placed in a cooler strage area before use.
Technician B: Says that the vapor in the container should be slowly vented into a refrigerant handling unit.
Who is right?
A only
B only
Both A and B
Neither A or B
- 3. Multiple Choice
The ozone layer filters out most of the sun's harmful:
Infrared radiation.
Ultraviolet radiation
Gamma radiation
Alpha radiation
- 4. Multiple Choice
The reduction of ozone in the stratosphere could cause:
an increase in skin cancer and eye cataracts
an increase in plant life growth.
an increase in the earth's polar ice.
an increase in marine life growth.
- 5. Multiple Choice
Technician a says that sunlight striking CFC molecules can cause chlorine to be released.
Technician B says that chlorine atoms react with ozone to produce chlorine monoxide.
Who is right?
A only
B only
Both A and B
Neither A nor B
- 6. Multiple Choice
R-134a refrigerant must be recycled to meet which of these purity standards?
J2788
Dot-4ba
J1991
J2099
- 7. Multiple Choice
If the required charge level of refrigerant for an MVAC system is 40 ounces, which of these is the correct charge level measured in pounds
1.75 lb
2.50 lb
3.75 lb
4.50 lb
- 8. Multiple Choice
Technician A says that recovery/recycling/recharging equipment for R1234yf refrigerant requires integration with a refrigerant identifier.
Technician B says that recovery/recycling/recharging equipment for R1234yf refrigerant uses a 17mm O.D. quick coupler on the low side service hose.
Who is right?
A only
B only
Both A and B
Niether A nor B
- 9. Multiple Choice
Which of these identifies a cylinder of R1234yf refrigerant?
White
Gray
Light Blue
White with red band
- 10. Multiple Choice
A container of recycled R-134a refrigerant that is being tested for non-condensable gases (air) should be:
chilled to 45 degrees
stored out of direct sunlight
heated to 95 F
stored for less than 6 hours
- 11. Multiple Choice
The EPA allows the use of R134a recovery-only equipment provided that the:
equipment meets J2810 standards
equipment meets J1991 standards
recovered refrigerant is stored below 120 F
recovered refrigerant is stored in a white container
- 12. Multiple Choice
Technician A says that it is OK to use a disposable refrigerant tank to store recycled refrigerant.
Technician B says that it is OK to fill an approved refrigerant tank to 70% of its gross weight rating.
A only
B only
Both A and B
Neither A and B
- 13. Multiple Choice
Before a container of stored recycled refrigerant is used, the container must be checked for:
gross weight
non-condensable gases
moisture contamination
DOT approval
- 14. Multiple Choice
Recovery equipment for R-134a refrigerant must meet standards set by:
SAE
UL/ETL
EPA
DOT
- 15. Multiple Choice
Alternative refrigerants use a unique set of service fittings that
prevent accidental mixing of refrigerants
are easier to locate
prevent accidental
are most cost effective
- 16. Multiple Choice
Technician A says that R-744 refrigerant is accepted by the EPA as an alternative for retrofit.
Technician B says that R-134a refrigerant is accepted by the EPA as an alternative for retrofit.
Who is right?
A only
B only
Both A and B
Neither A nor B
- 17. Multiple Choice
SAE standard J2099 specifies that the maximum level of non-condensable gases in recycled r-134a should not exceed:
0.5% by volume
1.0% by volume
1.5% by volume
2.0% by volume
- 18. Multiple Choice
When service equipment hoses with manual shutoff valves are not connected to an A/C system, the valves should be in the :
mid-seated position
back-seated position
closed position
open position
- 19. Multiple Choice
Technician A says that R-1234yf may be used to retrofit an R-134a system.
Technician B says that R-1234yf is an ozone-depleting gas.
Who is right?
A only
B only
Both A and B
Neither A and B
- 20. Multiple Choice
A technician who successfully completes the training and certification in an EPA-approved Section 609 program can legally service MVAC systems that use any of these refrigerants EXCEPT:
R-22
R-12
R-1234yf
R-134a
- 21. Multiple Choice
Electronic leak detectors for R-1234yf should meet:
J2297
J2298
J2913
J1628
- 22. Multiple Choice
Technicians servicing an MVAC system should do any of these EXCEPT:
store refrigerant in a disposable container
wear safety glasses
avoid direct contact with the refrigerant
working a well-ventilated area
- 23. Multiple Choice
Requirements for recovery/recycling/recharging equipment for R1234yf refrigerant are set by SAE standard:
J1990
J2788
J2843
J2209
- 24. Multiple Choice
R-1234yf refrigerant has a global warning potential (GWP) of:
1.
4.
124
1430
- 25. Multiple Choice
R-1234yf is a preferred refrigerant over R-134a because
R1234yf is highly flammable
R-1234yf has a high GWP
R-1234yf depletes the ozone layer
R-1234yf has a low GWP
- 26. Multiple Choice
Technician A says that SAE standard J639 spells out details for system design, implementation, and service.
Technician B says that SAE standard J639 specifies refrigerant fitting types and sizes for each refrigerant
Who is right?
A only
B only
Both A and B
Niether A nor B
- 27. Multiple Choice
Servicing MVAC system on hybrid and electric vehicles requires:
An electronic leak detector dedication to hybrid electric vehicle MVAC systems
Following J1989 for refrigerant recovery
service fittings specially design for hybrid and electric vehicle MVAC systems.
Special service procedures to disable the high voltage system prior to service
- 28. Multiple Choice
Technician A says that anyone servicing MVAC system for hire must be trained and certified
Technician B says that each piece of refrigerant handling equipment that is used to service motor vehicle air conditioners must be approved and certified
Who is right?
A only
B only
Both A and B
Neither A nor B
- 29. Multiple Choice
Which of these is a flammable refrigerant, unacceptable under SNAP as a substitute for CFC-12
HC-12A
R406A
R-176
GHG-X4
- 30. Multiple Choice
Empty disposable R-134a refrigerant containers should be
disposed of according to J2196
evacuated into a recovery/recycling machine
flushed with R-152a refrigerant
flushed with R-134a refrigerant
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