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Exam (elaborations)

EPA 608 UNIVERSAL EXAMS WITH CORRECT ANSWERS

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EPA 608 UNIVERSAL EXAMS WITH CORRECT ANSWERS

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EPA 608 UNIVERSAL, EPA 608
CERTIFICATION, SKILLCAT EPA 608

1. _______ is the process of removing refrigerant in any condition from a
system and storing it in an external container without necessarily
testing or processing it in any way. - Recovering - ANSWER-



2. ______________refers to the process of cleaning refrigerant by oil
separation and single or multiple passes through filter-driers, which
reduce moisture and acidity? - Recycling - ANSWER-



3. _________is the process that returns refrigerant to new-product
specifications and that requires chemical analysis? - Reclaim -
ANSWER-



4. "Self-contained" recovery devices: - can capture liquid and/or vapor
refrigerant without the assistance of components in the air-
conditioning or refrigeration equipment. - ANSWER-



5. 2.5 hg - ANSWER-According to ASHRAE Guideline 3 the system should
be checked for leaks if during a standard vacuum test the pressure in a
system rises from 1 mm hg to a level above



6. 3 - ANSWER-Ozone has ____ oxygen atoms.



7. 3 years - ANSWER-For what period should an hvac servicing company
keep records for a disposed appliance with a charge between 5 to 50
pounds



8. 5 - ANSWER-How many pounds of refrigerant can type 1 appliances
contain

,9. 10 inches of hg vacuum - ANSWER-A technician has to make a major
repair in an appliance having 1000 pounds of r407c he must evacuate
the system to which of the following levels



10. 10 psig - ANSWER-The typical setting for the high-pressure cut
out control on recovery unit used for evacuating the refrigerant from a
low-pressure chiller is



11. 10,000 - ANSWER-How much money does the EPA offer to
individuals who report information about others who vent refrigerants
into the atmosphere



12. 10% - ANSWER-When the annual leak rate exceeds _____, all
comfort cooling systems with more than 50lb of refrigerant must be
repaired.



13. 15 lbs - ANSWER-A recovery machine is required for appliances
with _ lbs or more of refrigerant



14. 15 psi - ANSWER-What is the safety relief pressure of the rupture
disc



15. 15 psig - ANSWER-In a low-pressure system, a rupture disk will
open at which of the following psig?



16. 16 ounces - ANSWER-How many ounces are in a pound?



17. 30 days - ANSWER-Substantial leaks should be repaired in what
period of time?

,18. 70% - ANSWER-What is passing grade for all epa certifications



19. 90% or 4 inch vacuum - ANSWER-When performing active
recovery and the compressor is working we must recover what levels



20. 100 - ANSWER-For universal certification you will receive how
many questions



21. 100,000 - ANSWER-One molecule of chlorine can destroy how
many molecules of ozone



22. 300,000 - ANSWER-How many molecules of ozone can three
molecules of chlorine destroy



23. 500 microns - ANSWER-The minimum microns a vacuum pump
must pull when evacuating a system



24. 1995 - ANSWER-In the United States when we're all CFCs phased
out



25. 2020 - ANSWER-In the United States when we're r22 r124b
phased out



26. 2030 - ANSWER-In the United States when will all HCFCS be
phased out



27. 44539 per day per violation - ANSWER-What is the fine for
violating the clean air act

, 28. A compound pressure gauge, typically used on the low side of
the system, measures pressure in: - psig and inches of mercury -
ANSWER-



29. A cylinder with a gray body and a yellow top indicates that the
cylinder is designed to hold: - recovered refrigerant - ANSWER-



30. A hermetic compressor must never be operated when: - there is
a dehydration vacuum in the system. - ANSWER-



31. A large vacuum pump is used for evacuation - ANSWER-Water
present in the system can freeze if



32. A large vacuum pump is used for evacuation - ANSWER-Water
present in the system can freeze if



33. A pungent smell - ANSWER-What is a sign of a compressor
burnout



34. A recovery cylinder must not be filled more than ___ % of it's
capacity by weight? - ANSWER-80%



35. A refillable refrigerant cylinder must never be filled to more
than_________ of its capacity by weight: - 80% - ANSWER-



36. A straight piece of tubing - ANSWER-What does the process stud
look like in small appliances



37. A system is considered dehydrated when: - - ANSWER-the
vacuum indicator shows you have reached and held the required
finished vacuum.

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