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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 vacuum is held by the system for
1 Minute
2 minutes
3 Minutes
4 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 storage area before use.
Technician B says that the vapor in the container should be slowly vented into a refrigerant handling unit.
A Only
B Only
Both A and B
Neither A nor 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.
Tech A
Tech B
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
J2099
J1991
- 7. Multiple Choice
If the required charge level of refrigerant for and MVAC system is 40 ounces, which of these is the correct charge level measured in pounds?
1.75lb
4.50lb
3.75lb
2.50lb
- 8. Multiple Choice
Technician A says that recovery/recycling/recharging equipment for R-1234yf refrigerant requires integration with a refrigerant identifier.
Technician B says that Recovery/recycling/recharging equipment for R-1234yf refrigerant uses a 17mm O.D. quick coupler on the low-side service hose.
Tech A
Tech B
Both A and B
Neither A nor B
- 9. Multiple Choice
Which of these identifies a cylinder of R-1234yf 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 Fahrenheit
Stored out of direct sunlight
Heated to 95 degrees Fahrenheit
Stored for less than 6 hours
- 11. Multiple Choice
The EPA allows the use of R-134a recovery-only equipment provided that the
Equipment meets J2810 standards.
Equipment meets J1991 standards.
Recovered refrigerant is stored below 120degrees Fahrenheit
Recovered refrigerant is stored in a whit container.
- 12. Multiple Choice
Technician A says that it is ok to use disposable refrigerant tank to store recycled refrigerant.
Technician B says that it is ok to fill and approved refrigerant tank to 70 0/0 of its gross weight rating
Tech A
Tech B
Both A and B
Neither A nor B
- 13. Multiple Choice
Before a container of stored recycled refrigerant is used, the container must be checked for:
Gross weight
Non-condensable gases.
Moister 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
Technician A says R-744 refrigerant is accepted by the EPA as an alternative for retrofit
Technician B says 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
- 16. Multiple Choice
Alternative refrigerant use a unique set of service fittings that:
Prevent accidental mixing of refrigerants
Are easier to locate
Prevent accidental loss of refrigerants
Are more cost effective
- 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 and 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 nor B
- 20. Multiple Choice
A technician who successfully completes the training and certification in and 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
1. Electronic leak detectors for R-1234yf should meet:
J2297
J2298
J2913
J1628
- 22. Multiple Choice
Technician servicing an MVAC system should do any of these EXCEPT:
Store refrigerant in a disposable container
Wear safety goggles
Avoid direct contract with the refrigerant
Work in a well-ventilated area
- 23. Multiple Choice
Requirements for recovery/recycling/recharging equipment for r-1234yf refrigerant are set by SAE standard:
J1990
J2788
J2843
J2209
- 24. Multiple Choice
R1234yf refrigerant has a global warming potential (GWP) of:
1
4
149
1234
- 25. Multiple Choice
R-1234yf is a preferred refrigerant over R-134a because:
R-1234yf is highly flammable
R-1234yf has a high GWP
R-1234yf depletes the ozone layer
R-1234yf has a low GWP
- 26. Multiple Choice
1. 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?
Tech A
Tech B
Both A and B
Neither A nor B
- 27. Multiple Choice
Servicing MVAC system on hybrid and electric vehicles requires
An electronic leak detector to hybrid and electric vehicles MVAC systems
Following SAE J1989 for refrigerant recovery
Service fittings specially designed 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 systems for hire must be trained and certified.
Technician B says that each piece of refrigerant handling equipment that is use to service motor vehicle air conditioners must be approved
Tech A
Tech B
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 SAE J2196
Evacuated into a recovery/recycling machine
Flushed with R-152a refrigerant
Flushed with R-134a refrigerant
- 31. Multiple Choice
To remove refrigerant in any condition from a system and store it in an approved external container
Recover
Recycle
Reclaim
- 32. Multiple Choice
To clean refrigerant for reuse by separating the oil and removing moisture by passing it through one or more filter driers
Recover
Recycle
Reclaim
- 33. Multiple Choice
EPA approved the use of 2 types of equipment
Recover
Recycle
Recover/recycle
- 34. Multiple Choice
UL first certified recovery/recycling equipment in...
September 1989
January 29th, 1998
October 2006
- 35. Multiple Choice
If a facility changes ownership, the new owner must...
earn or have the Section 609 certification
submit to a new certification statement to the EPA within 60 days of the change of ownership
submit to a new certification statement to the EPA within 50 days of the change of ownership
submit to a new certification statement to the EPA within 40 days of the change of ownershi4
submit to a new certification statement to the EPA within 30 days of the change of ownership
- 36. Multiple Choice
J2788...
sets a recharge accuracy standard of .5 ounces
requires 92% of recovery of refrigerant
sets a recharge accuracy standard of .7 ounces
requires 95% of recovery of refrigerant
None of the above
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