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1. A hermetically sealed refrigerator is manufactured and charged at the factory with 4.5 pounds of refrigerant. Under Section 608, how is it classified?
Why
The small appliance class covers factory-manufactured, factory-charged, hermetically sealed units holding five pounds or less. At 4.5 pounds this unit qualifies.
Source: 40CFR82.152#061
2. Which person meets the regulatory definition of a technician?
Why
The definition turns on whether the work could reasonably be expected to violate the integrity of the refrigerant circuit, not on job title, employer, or purchasing.
Source: 40CFR82.152#065
3. While servicing an appliance, a technician deliberately releases a regulated, non-exempt refrigerant to the atmosphere. This is:
Why
The venting prohibition bars knowingly releasing refrigerant during maintenance, service, repair or disposal. Quantity, approval and refrigerant class do not create an exemption.
Source: 40CFR82.154#001(a)
4. Under the leak repair provisions, how long must the required records be kept, unless another provision specifies otherwise?
Why
The leak repair recordkeeping paragraph, which has governed these records since the start of 2019, requires that they be kept for at least three years in electronic or paper format unless otherwise specified.
Source: 40CFR82.157#071(l)
5. Owners or operators must keep a record of each maintenance, service, repair or disposal event, including the date, the work performed and the refrigerant added, for appliances with a full charge of at least:
Why
The per-service record obligation attaches to owners and operators of appliances with a full charge of 50 or more pounds of class I or class II refrigerant, and whoever performs the work must provide the record to them.
Source: 40CFR82.157#078(l)(2)
6. A technician who only services household refrigerators and window air conditioners needs which certification?
Why
Servicing small appliances requires Type I certification.
Source: 40CFR82.161#003(i)
7. Certification as a Type II technician is required to service which appliances?
Why
Type II covers medium, high and very high pressure appliances, excluding small appliances, MVACs and MVAC-like appliances.
Source: 40CFR82.161#004(ii)
8. A technician servicing a low-pressure centrifugal chiller must hold which certification?
Why
Low-pressure appliances fall under Type III certification.
Source: 40CFR82.161#005(iii)
9. To service MVAC-like appliances, such as air conditioning on a construction vehicle, a technician must:
Why
MVAC-like appliances require either Type II certification or certification under the subpart B motor vehicle program.
Source: 40CFR82.161#007(v)
10. Using recovery equipment manufactured before the regulation's late-1993 cutoff date, what percentage of refrigerant must be recovered from a small appliance?
Why
Equipment manufactured before the cutoff carries an 80 percent recovery requirement regardless of whether the compressor runs.
Source: 40CFR82.156#018(1)
11. As an alternative to meeting a recovery percentage on a small appliance, the technician may:
Why
Evacuating to four inches of mercury vacuum is the stated alternative to the percentage recovery route.
Source: 40CFR82.156#020(3)
12. When recovering refrigerant from an MVAC for disposal, system pressure must be reduced to or below:
Why
For MVAC disposal the alternative to subpart B evacuation is reducing system pressure to or below 102 mm of mercury vacuum.
Source: 40CFR82.156#022(d)
13. The leak rate threshold that triggers repair requirements for commercial refrigeration equipment is:
Why
Commercial refrigeration carries a 20 percent annual leak rate threshold.
Source: 40CFR82.157#004(i)
14. Industrial process refrigeration equipment has a leak rate threshold of:
Why
Industrial process refrigeration is set at 30 percent, the highest of the three thresholds.
Source: 40CFR82.157#005(ii)
15. A 60-pound R-22 rooftop unit provides comfort cooling for an office. What annual leak rate obligates the owner to act?
Why
Comfort cooling and other appliances with a full charge of 50 pounds or more of class I or class II refrigerant, not otherwise covered, carry the lowest threshold, 10 percent. R-22 is a class II refrigerant, so the appliance is inside the leak repair section.
Source: 40CFR82.157#006(iii)
16. An appliance containing 50 pounds or more that leaks what portion of its full charge in a calendar year triggers a report to EPA?
Why
The chronically leaking appliance report is triggered at 125 percent or more of full charge within a calendar year.
Source: 40CFR82.157#069(j)
17. Purged refrigerant may be excluded from annual leak rate calculations when it is destroyed at a verifiable destruction efficiency of at least:
Why
Destruction at 98 percent efficiency or greater allows purged refrigerant to be left out of the leak rate calculation.
Source: 40CFR82.157#070(k)
18. Equipment that can remove refrigerant from an appliance without relying on components inside that appliance is called:
Why
Self-contained equipment works without assistance from the appliance's own components. System-dependent equipment relies on them.
Source: 40CFR82.152#059
19. A Universal certification test consists of:
Why
Universal is 100 questions: 25 core plus 25 from each of the three sector-specific areas.
Source: 40CFR82-AppD#018
20. A scrapyard worker's only contact with refrigerant circuits is recovering the charge from discarded household refrigerators before they are shredded. Which certification does the regulation require?
Why
The certification section states that persons who dispose of small appliances, MVACs and MVAC-like appliances are not required to be certified. The recovery levels and the certified-equipment rule still apply to that work.
Source: 40CFR82.161#009(vii)
21. Before opening a low-pressure appliance for major service, Table 1 of the evacuation section requires the technician to evacuate it to:
Why
Table 1 sets the low-pressure appliance level at 25 mm Hg absolute with recovery equipment of either vintage. The other classes are set in inches of mercury vacuum by pressure class and charge size.
Source: 40CFR82.156#Table1
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