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EPA 608 (Type III) Exam
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The EPA 608 Type III exam certifies technicians to service low-pressure appliances (e.g., centrifugal chillers) and covers leak detection, repair, and refrigerant recovery/recharging techniques. Key topics include R-123/R-1233zd safety, evacuation procedures, rupture disc discharge, and 72% passing rates.  Key Exam Topics for Type III (Low-Pressure Systems): Leak Detection and Repair: Identifying leaks in low-pressure systems, as they operate in a vacuum, focusing on excessive purging. Leak Test Pressurization: Using hot water or systems to increase pressure for leak testing. Recovery... Show more
EPA 608 (Type III) Exam
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18 Questions

1. A hydrostatic tube test Kit is used to:

2. What steps may be taken to prevent air accumulation into an idle low pressure refrigeration system?

3. According to the EPA, there is approximately _______ refrigerant vapor left in an average 350 ton R-11 chiller at 0 psig pressure once all the R-11 liquid has been removed.

4. A charged low pressure refrigeration system can be efficiently leak checked by?

5. If you are using recovery machine manufactured BEFORE November 15, 1993, you must evacuate any low-pressure appliance to_________ before making a major repair?

6. Refrigerant R-11 at 14.7 PSIA will boil at about?

7. ASHRAE Standard 15 - 1994 requires equipment sensors for what safety group classification?

8. When recovering vapor from a low pressure refrigeration system the:

9. The discharge from a rupture disc should be piped __________ for venting?

10. If you are using a recovery machine manufactured AFTER November 15, 1993, you must evacuate any low-pressure appliance to ____________ before making a major repair.

11. What steps may be taken to prevent air accumulation into an idle low pressure refrigeration system.

12. The existence of air in a low pressure system, causes __________.

13. If you leak test a low pressure chiller with nitrogen in excess of 10 psig you could cause the ____________ to fail.

14. A rupture disc on a recovery vessel for low pressure refrigerants relieves at?

15. EPA regulations require that any appliances containing more than 50 pounds of refrigerant, except for commercial & industrial process refrigeration, must be repaired when leak rate exceeds _________ of the charge per year.

16. When recharging a refrigeration system with R-11, what vapor pressure is necessary in the shells before charging with liquid?

17. The maximum test pressure for leak testing a low pressure centrifugal is?

18. A typical setting for the high pressure cut-out control on a recovery unit used for evacuating the refrigerant from a low pressure chiller?

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