EPA 608 Certification
Section 1: Recovery Cylinders and Equipment
1. A recovery cylinder must not be filled more than what percentage of its
capacity by weight?
● A) 60%
● B) 70%
● C) 80%
● D) 90%
Answer: C) 80%
2. Vacuum pumps need to be capable of pulling what level of vacuum?
● A) 100 microns
● B) 250 microns
● C) 500 microns
● D) 1000 microns
Answer: C) 500 microns
3. What date was recovery equipment required to be certified by a lab, achieve
higher evacuation levels, and have low loss fittings?
● A) November 14, 1994
● B) November 15, 1993
● C) December 31, 1995
● D) January 1, 1996
Answer: B) November 15, 1993
Section 2: Refrigerant Types and Safety
4. What do A-1 Group Refrigerants only require?
● A) Refrigerant Specific Mechanical Room Sensor
, ● B) Oxygen Deprivation Sensor
● C) Carbon Monoxide Detector
● D) Temperature Monitor
Answer: B) Oxygen Deprivation Sensor
5. All "B" rated refrigerants require what?
● A) Oxygen Deprivation Sensor
● B) Fire Suppression System
● C) "Refrigerant Specific" Mechanical Room Sensor
● D) Emergency Ventilation
Answer: C) "Refrigerant Specific" Mechanical Room Sensor
6. What does CFC stand for?
● A) ChloroFluoroCarbon
● B) CarbonFluoroChloride
● C) ChlorineFreeCarbons
● D) CoolingFluidCompound
Answer: A) ChloroFluoroCarbon
7. What does HCFC stand for?
● A) HydroCarbonFluoride
● B) HydroChloroFluoroCarbon
● C) HighChloroFluoroCompound
● D) HydrogenChlorideFluorine
Answer: B) HydroChloroFluoroCarbon
Section 3: Leak Rates and Regulations
8. All cooling systems containing more than 50 lbs. of refrigerant must be
repaired when the annual leak rate exceeds what percentage?
● A) 10%
, ● B) 15%
● C) 25%
● D) 35%
Answer: B) 15%
9. All refrigeration systems containing more than 50 lbs. of refrigerant must be
repaired when the annual leak rate exceeds what percentage?
● A) 15%
● B) 20%
● C) 30%
● D) 35%
Answer: D) 35%
Section 4: Refrigerant Numbering System
10. All refrigerants are assumed to be a single chemical if they are numbered
in what range?
● A) 1-299 and 600 and above
● B) 1-399 and 600 and above
● C) 1-499 and 700 and above
● D) 100-399 only
Answer: B) 1-399 and 600 and above
11. Azeotropes are numbered in what range?
● A) 400 to 499
● B) 500 to 599
● C) 600 to 699
● D) 700 to 799
Answer: B) 500 to 599
Section 5: Reclaim, Recover, and Recycle
Section 1: Recovery Cylinders and Equipment
1. A recovery cylinder must not be filled more than what percentage of its
capacity by weight?
● A) 60%
● B) 70%
● C) 80%
● D) 90%
Answer: C) 80%
2. Vacuum pumps need to be capable of pulling what level of vacuum?
● A) 100 microns
● B) 250 microns
● C) 500 microns
● D) 1000 microns
Answer: C) 500 microns
3. What date was recovery equipment required to be certified by a lab, achieve
higher evacuation levels, and have low loss fittings?
● A) November 14, 1994
● B) November 15, 1993
● C) December 31, 1995
● D) January 1, 1996
Answer: B) November 15, 1993
Section 2: Refrigerant Types and Safety
4. What do A-1 Group Refrigerants only require?
● A) Refrigerant Specific Mechanical Room Sensor
, ● B) Oxygen Deprivation Sensor
● C) Carbon Monoxide Detector
● D) Temperature Monitor
Answer: B) Oxygen Deprivation Sensor
5. All "B" rated refrigerants require what?
● A) Oxygen Deprivation Sensor
● B) Fire Suppression System
● C) "Refrigerant Specific" Mechanical Room Sensor
● D) Emergency Ventilation
Answer: C) "Refrigerant Specific" Mechanical Room Sensor
6. What does CFC stand for?
● A) ChloroFluoroCarbon
● B) CarbonFluoroChloride
● C) ChlorineFreeCarbons
● D) CoolingFluidCompound
Answer: A) ChloroFluoroCarbon
7. What does HCFC stand for?
● A) HydroCarbonFluoride
● B) HydroChloroFluoroCarbon
● C) HighChloroFluoroCompound
● D) HydrogenChlorideFluorine
Answer: B) HydroChloroFluoroCarbon
Section 3: Leak Rates and Regulations
8. All cooling systems containing more than 50 lbs. of refrigerant must be
repaired when the annual leak rate exceeds what percentage?
● A) 10%
, ● B) 15%
● C) 25%
● D) 35%
Answer: B) 15%
9. All refrigeration systems containing more than 50 lbs. of refrigerant must be
repaired when the annual leak rate exceeds what percentage?
● A) 15%
● B) 20%
● C) 30%
● D) 35%
Answer: D) 35%
Section 4: Refrigerant Numbering System
10. All refrigerants are assumed to be a single chemical if they are numbered
in what range?
● A) 1-299 and 600 and above
● B) 1-399 and 600 and above
● C) 1-499 and 700 and above
● D) 100-399 only
Answer: B) 1-399 and 600 and above
11. Azeotropes are numbered in what range?
● A) 400 to 499
● B) 500 to 599
● C) 600 to 699
● D) 700 to 799
Answer: B) 500 to 599
Section 5: Reclaim, Recover, and Recycle
