EPA 608 Type III Complete Questions & Answers!

What do R-11 and R-123 refrigerants have in common? A. They are oxygen depleting B. They are Class I and II substances as defined by the EPA C. Both A and B D. Neither A nor B - ANSWER C. Both A and B What is the required evacuation level for recovering refrigerant from a low-pressure appliance with a recovery machine manufactured before November 15, 1993? A. 0 psig B. 4" Hg C. 10 A Hg D. 25" Hg - ANSWER D. 25" Hg How is frost best removed from a sight glass? A. reverse the refrigeration cycle. B. Scrape or chip the ice off. C. spray the sight glass with alcohol. D. turn off the water supply. - ANSWER C. spray the sight glass with alcohol. What is the color code for a recovery cylinder for R- 22? A. Gray with yellow top. B. Yellow with gray top. C. Yellow with white top. D. White with yellow top. - ANSWER A. Gray with yellow top Why do low-pressure chillers require purge units? A. they operate below atmospheric pressure. B. they draw non-condensables through gaskets and seals. C. Both A or B. D. Neither A nor B. - ANSWER C. Both A or B. What is connected to the rupture disk of a low- pressure chiller? A. the low side. B. the high side. C. the compressor. D. the purge valve. - ANSWER A. the low side. The purge unit draws from the: A. rupture disk. B. suction of the compressor. C. evaporator. D. top of the condenser. - ANSWER D. top of the condenser. Before a low-pressure appliance is dismantled for salvage, the refrigerant must be: A. recovered B. recycled. C. reclaimed. D. vented. - ANSWER A. recovered Machine- room safety standards are established by: A. ARI-7000