Heating and Cooling Essentials Online Textbook - Table of Contents

Activities Support

Chapter 15: Refrigerant Recovery and Recycling

1. The stratosphere is located _____ miles above the earth.
     A. 5 to 10 B. 10 to 20 C. 10 to 30 D. 50
2. The ozone layer provides protection from _____.
     A. UV radiation B. skin cancer C. deforestation D. All of the above.
3. Which element in refrigerant destroys ozone?
     A. Chlorine. B. Fluorine. C. Methane. D. All of the above.
4. _____ is a measurement of a refrigerant's ability to destroy ozone.
     A. UFO B. ODP C. EEC D. DOT
5. Which type of refrigerant does not harm the ozone layer?
     A. CFC. B. HCFC. C. HFC. D. All of the above.
6. The Montreal Protocol called for all CFC production to cease by January 1, _____.
     A. 1993 B. 1994 C. 1995 D. 1996
7. Which U.S. government agency was empowered by Congress to regulate and enforce the Clean Air Act?
     A. OSHA. B. EPA. C. DOE. D. ODP.
8. It is a violation of the Clean Air Act to knowingly release _____ refrigerants into the atmosphere.
     A. CFC B. HCFC C. HFC D. All of the above.
9. True or False? Even minor amounts of refrigerants may never be vented to the atmosphere.
     A. True B. False
10. Does recycle mean to clean refrigerant for reuse or resale?
    
11. True or False? Recovered refrigerant may contain acid, moisture, and oil.
      A. True B. False
12. A system containing 50 pounds of R-12 must be recovered to _____ if the recovery unit was manufactured after November 15, 1993.
      A. 0 psig B. 4 in. Hg C. 10 in. Hg D. 500 microns
13. The color code for recovery cylinders is _____.
      A. gray B. gray bottom, yellow top C. yellow bottom, gray top D. none of the above
14. True or False? Recovery cylinders are considered full at 80% of total cylinder capacity.
      A. True B. False
15. The expanding liquid inside a cylinder creates _____ pressure.
      A. negative B. positive C. hydrostatic D. All of the above.
16. Recovery cylinders have (one, two) valves.
    
17. Passive recovery can be used only when the system has a running _____.
      A. evaporator fan B. compressor C. condenser fan D. metering device
18. When recycling refrigerant, how long must the refrigerant normally recirculate through a filter-drier?
      A. 30 minutes. B. 4 to 6 hours. C. All day. D. Not required.
19. R&R equipment refers to _____.
      A. recycle and reclaim B. recover and recycle C. reclaim and dispose D. All of the above.
20. To perform a pumpdown means to capture refrigerant in the _____.
      A. liquid receiver B. evaporator C. compressor D. suction line

| © The Goodheart-Willcox Co., Inc. All rights reserved.