EPA 608 Practice Exam Type 1
1. Who can sell reclaimed CFC, HCFC, HFC, and HFO refrigerants?
- ✔️ Restricted to technicians who are EPA certified and involved in refrigerant recovery.
2. How is a small appliance defined?
- ✔️ A system that is manufactured, fully charged, and hermetically sealed in a factory with a charge
of 5 pounds or less.
3. What type of recovery device can be used for type 1 small appliance applications or type 2
applications if the total charge is below 15 pounds?
- ✔️ System dependent recovery device.
4. When do you need a self-contained recovery machine?
- ✔️ Unless you only work on small appliances.
5. What must recovery devices for small appliances be capable of?
- ✔️ Recovering 90% of the refrigerant when the compressor is operating.
6. What hydrocarbon refrigerant is approved for retrofit into existing household refrigerators?
- ✔️ None; hydrocarbons are not approved for any retrofit applications.
7. Which refrigerant cannot be used in new household refrigerators with a charge of less than 57 grams
(2 ounces)?
- ✔️ R-1235yf.
8. What defines an exempt refrigerant?
- ✔️ A refrigerant with 0 ozone depletion potential (0 ODP) and a global warming potential (GWP)
equal to or lower than carbon dioxide, specifically a GWP of 1 or less.
, 9. What is not considered a small appliance?
- ✔️ An MVAC-like system that holds 3 pounds of R-22.
10. What is the minimum charge for using system-dependent recovery equipment?
- ✔️ Less than 15 pounds.
11. What happens to nitrogen gas when it is pressurized into the system?
- ✔️ It may be vented to the ambient air.
12. What happens when a tank of mixed refrigerant is sent to a reclaimer?
- ✔️ The reclaimer can either refuse to accept it or charge extra for processing.
13. What does a passive system dependent recovery process do?
- ✔️ Recovers refrigerant in a non-pressurized container.
14. What is the pressure of a storage cylinder of R-134A at 100°F?
- ✔️ 124 psig.
15. What is the pressure of a storage cylinder of R-404A at 100°F?
- ✔️ 237 psig.
16. What must be done with any refrigerant vented off the top of the charging cylinder?
- ✔️ It must be recovered.
17. When can recovery of refrigerant not begin?
- ✔️ If the initial pressure in the system is 0 psig.
1. Who can sell reclaimed CFC, HCFC, HFC, and HFO refrigerants?
- ✔️ Restricted to technicians who are EPA certified and involved in refrigerant recovery.
2. How is a small appliance defined?
- ✔️ A system that is manufactured, fully charged, and hermetically sealed in a factory with a charge
of 5 pounds or less.
3. What type of recovery device can be used for type 1 small appliance applications or type 2
applications if the total charge is below 15 pounds?
- ✔️ System dependent recovery device.
4. When do you need a self-contained recovery machine?
- ✔️ Unless you only work on small appliances.
5. What must recovery devices for small appliances be capable of?
- ✔️ Recovering 90% of the refrigerant when the compressor is operating.
6. What hydrocarbon refrigerant is approved for retrofit into existing household refrigerators?
- ✔️ None; hydrocarbons are not approved for any retrofit applications.
7. Which refrigerant cannot be used in new household refrigerators with a charge of less than 57 grams
(2 ounces)?
- ✔️ R-1235yf.
8. What defines an exempt refrigerant?
- ✔️ A refrigerant with 0 ozone depletion potential (0 ODP) and a global warming potential (GWP)
equal to or lower than carbon dioxide, specifically a GWP of 1 or less.
, 9. What is not considered a small appliance?
- ✔️ An MVAC-like system that holds 3 pounds of R-22.
10. What is the minimum charge for using system-dependent recovery equipment?
- ✔️ Less than 15 pounds.
11. What happens to nitrogen gas when it is pressurized into the system?
- ✔️ It may be vented to the ambient air.
12. What happens when a tank of mixed refrigerant is sent to a reclaimer?
- ✔️ The reclaimer can either refuse to accept it or charge extra for processing.
13. What does a passive system dependent recovery process do?
- ✔️ Recovers refrigerant in a non-pressurized container.
14. What is the pressure of a storage cylinder of R-134A at 100°F?
- ✔️ 124 psig.
15. What is the pressure of a storage cylinder of R-404A at 100°F?
- ✔️ 237 psig.
16. What must be done with any refrigerant vented off the top of the charging cylinder?
- ✔️ It must be recovered.
17. When can recovery of refrigerant not begin?
- ✔️ If the initial pressure in the system is 0 psig.
