EPA SECTION 608 TYPE II (REVISION)
EXAM QUESTIONS AND ANSWERS 100%
PASS.
When first inspecting a hermetic system known to be leaking, you should look for;
a. frost on the tubing
b. puddles of refrigerant.
c. particles of filter drier core.
d. traces of oil. - ANS D
Which part of a belt-driven non-hermetic compressor is most likely to leak if the compressor has
not been used for serval months?
a. Suction service valve.
b. Rotating shaft seal.
c. One or both of the king valves.
d. Head gasket on discharge side. - ANS B
Starting in 2019, what leak rate triggers the EPA requirement that commercial refrigeration
systems containing 50 pounds or more of R-22 be repaired?
a. 10%.
b. 20%.
c. 30%.
d. 35%. - ANS B
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
,A comfort-cooling appliance containing 50 pounds or more of R-22 is found to be leaking
beyond the applicable leak rate threshold. Unless granted additional time, how many days do
you have to repair the leak and conduct the initial leak verification test?
a. 1 day
b. 10 days
c. 30 days
d. 45 days - ANS C
After a leak repair of a supermarket rack using 3000 lbs. of R-22 and a successful initial
verification test, when must a follow-up leak verification test be conducted?
a. The same day.
b. The next day.
c. Within 10 days.
d. Within 30 days. - ANS C
An initial leak verification test failed after repairing a leak in a rack refrigeration system for a
supermarket using an HCFC refrigerant. What would be the next step(s)?
a. Immediately retrofit or retire the appliance.
b. Conduct additional repairs within the 30-day repair window or mothball the appliance.
c. Conduct a follow-up verification test.
d. Report the amount of refrigerant added to the system to the EPA. - ANS B
Which of the following CANNOT be used as a reason to extend the appliance repair deadlines?
a. Requirements of federal, state, or local regulations make the repair within 30 days impossible.
b. A necessary component is not available.
c. The appliance is located in an area that is subject to radiological contamination.
d. A certified service technician is not available. - ANS D
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
, When a trace gas becomes absolutely necessary, which of the available refrigerants should be
used to help locate a leak?
a. Nitrogen with HCFC R-22.
b. R-22 due to its universal system compatibility and its miscibility with various oils.
c. Nitrogen with a trace amount of the system's design refrigerant.
d. Nitrogen with HFC R-410A. - ANS C
Which of the following is an indicator of a leak in a high-pressure system with a capillary tube?
a. High head pressure
b. Low water temperature
c. Excessive superheat
d. Frequent purging - ANS C
Recovered refrigerant may contain which of the following impurities?
a. Ammonia, carbon dioxide, and methyl chloride
b. Sodium chloride, potassium nitrate, and silicone oil
c. Sulphur dioxide and methane
d. Acids, moisture, and oil - ANS D
What is the first thing to do when a new system has been assembled and is ready for testing?
a. Pull a vacuum.
b. Pressurize with an inert gas and leak check.
c. Pressurize with the refrigerant to be used in the system.
d. Introduce an initial charge of refrigerant and start the compressor. - ANS B
What is the best use for testing with soap bubbles?
a. To pinpoint refrigerant leaks.
b. To find refrigerant leaks in coil fin area.
c. To detect leaks in water tube condensers.
2026 STUDY MATERIAL @COPYRIGHT RESERVED 3
EXAM QUESTIONS AND ANSWERS 100%
PASS.
When first inspecting a hermetic system known to be leaking, you should look for;
a. frost on the tubing
b. puddles of refrigerant.
c. particles of filter drier core.
d. traces of oil. - ANS D
Which part of a belt-driven non-hermetic compressor is most likely to leak if the compressor has
not been used for serval months?
a. Suction service valve.
b. Rotating shaft seal.
c. One or both of the king valves.
d. Head gasket on discharge side. - ANS B
Starting in 2019, what leak rate triggers the EPA requirement that commercial refrigeration
systems containing 50 pounds or more of R-22 be repaired?
a. 10%.
b. 20%.
c. 30%.
d. 35%. - ANS B
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
,A comfort-cooling appliance containing 50 pounds or more of R-22 is found to be leaking
beyond the applicable leak rate threshold. Unless granted additional time, how many days do
you have to repair the leak and conduct the initial leak verification test?
a. 1 day
b. 10 days
c. 30 days
d. 45 days - ANS C
After a leak repair of a supermarket rack using 3000 lbs. of R-22 and a successful initial
verification test, when must a follow-up leak verification test be conducted?
a. The same day.
b. The next day.
c. Within 10 days.
d. Within 30 days. - ANS C
An initial leak verification test failed after repairing a leak in a rack refrigeration system for a
supermarket using an HCFC refrigerant. What would be the next step(s)?
a. Immediately retrofit or retire the appliance.
b. Conduct additional repairs within the 30-day repair window or mothball the appliance.
c. Conduct a follow-up verification test.
d. Report the amount of refrigerant added to the system to the EPA. - ANS B
Which of the following CANNOT be used as a reason to extend the appliance repair deadlines?
a. Requirements of federal, state, or local regulations make the repair within 30 days impossible.
b. A necessary component is not available.
c. The appliance is located in an area that is subject to radiological contamination.
d. A certified service technician is not available. - ANS D
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
, When a trace gas becomes absolutely necessary, which of the available refrigerants should be
used to help locate a leak?
a. Nitrogen with HCFC R-22.
b. R-22 due to its universal system compatibility and its miscibility with various oils.
c. Nitrogen with a trace amount of the system's design refrigerant.
d. Nitrogen with HFC R-410A. - ANS C
Which of the following is an indicator of a leak in a high-pressure system with a capillary tube?
a. High head pressure
b. Low water temperature
c. Excessive superheat
d. Frequent purging - ANS C
Recovered refrigerant may contain which of the following impurities?
a. Ammonia, carbon dioxide, and methyl chloride
b. Sodium chloride, potassium nitrate, and silicone oil
c. Sulphur dioxide and methane
d. Acids, moisture, and oil - ANS D
What is the first thing to do when a new system has been assembled and is ready for testing?
a. Pull a vacuum.
b. Pressurize with an inert gas and leak check.
c. Pressurize with the refrigerant to be used in the system.
d. Introduce an initial charge of refrigerant and start the compressor. - ANS B
What is the best use for testing with soap bubbles?
a. To pinpoint refrigerant leaks.
b. To find refrigerant leaks in coil fin area.
c. To detect leaks in water tube condensers.
2026 STUDY MATERIAL @COPYRIGHT RESERVED 3
