EPA 608 Type II Exam Questions and
Answers
Before charging a new system with refrigerant, what should be done? - correct
Answers-Pressurize with nitrogen (classified as an inert gas) and leak
Which refrigerant can be used for leak detection as a trace gas and pressurized
with nitrogen? - correct Answers-R-22
What tools can you use to find general area of leaks and pinpoint leaks?
a. Soap bubbles.
b. Look for oil residue
c. Electronic or ultrasonic leak detector will provide the general area of
the leak
d. Refrigerant dye - correct Answers-c. Electronic or ultrasonic leak detector will provide
the general area of
the leak
Traces of oil around a sight glass inlet fitting of a refrigeration system might be
the indication of:
a. A leak
b. Excessive oil in the system
c. An overcharge
d. A restriction at the TXV - correct Answers-a. A leak
Describe ways you can visually look for leaks.
a. Using soap bubbles
b. Looking for traces of oil
c. Excessive superheat, caused by low refrigerant charge
d. All the above - correct Answers-d. All the above
Type II classification, as identified by EPA, applies to what equipment?
a. Small appliances with five (5) pounds of refrigerant or less
b. Refrigerators, freezers, and vending machine appliances
c. Low pressure appliances
d. Split air conditioning equipment with five (5) pounds of refrigerant
or more - correct Answers-d. Split air conditioning equipment with five (5) pounds of
refrigerant
or more
What are the leak repair requirements for comfort cooling appliances and commercial
Appliances containing 50 lbs. or more of refrigerant?
, a. Must be repaired if leak rate exceeds 15% in comfort cooling appliances.
b. Must be repaired if leak rate exceeds 35% in all commercial and industrial
process refrigeration\
c. a and b
d. None of the above - correct Answers-c. a and b
What type of refrigerant was the most common before outlawing CFCs and
HCFCs?
a. R-12
b. R-22
c. R-500
d. R-134A - correct Answers-b. R-22
The required level of evacuation for recovery equipment manufactured after
November 15, 1993, on a system containing less than 200 pounds of R-12
refrigerant is:
a. 0 inches Hg
b. 4 inches Hg
c. 10 inches Hg
d. 15 inches Hg - correct Answers-c. 10 inches Hg
What is the purpose of the filter drier and when should it be changed?
a. To filter the oil. Change every year.
b. To remove moisture from the refrigerant, replace on a routine basis
or anytime a system is opened
c. Cleans the air. Replace monthly
d. Dryer's air filters. Replace yearly - correct Answers-b. To remove moisture from the
refrigerant, replace on a routine basis or anytime a system is opened
Industrial process and commercial refrigeration equipment with over 50 pounds
of refrigerant with an annual leak rate of ___ % requires repair under EPA
regulations.
a. 0
b. 15
c. 35
d. 50 - correct Answers-c. 35
How can you tell through a sight glass if there is excess moisture in the system?
a. You can see moisture bubbles
b. Look for color changes of the refrigerant
c. You can see gas bubbles
d. Site glass is clear - correct Answers-b. Look for color changes of the refrigerant
Comfort cooling chillers and all other equipment with over 50 pounds of
refrigerant with an annual leak rate of ___ % requires repair under EPA
regulations:
Answers
Before charging a new system with refrigerant, what should be done? - correct
Answers-Pressurize with nitrogen (classified as an inert gas) and leak
Which refrigerant can be used for leak detection as a trace gas and pressurized
with nitrogen? - correct Answers-R-22
What tools can you use to find general area of leaks and pinpoint leaks?
a. Soap bubbles.
b. Look for oil residue
c. Electronic or ultrasonic leak detector will provide the general area of
the leak
d. Refrigerant dye - correct Answers-c. Electronic or ultrasonic leak detector will provide
the general area of
the leak
Traces of oil around a sight glass inlet fitting of a refrigeration system might be
the indication of:
a. A leak
b. Excessive oil in the system
c. An overcharge
d. A restriction at the TXV - correct Answers-a. A leak
Describe ways you can visually look for leaks.
a. Using soap bubbles
b. Looking for traces of oil
c. Excessive superheat, caused by low refrigerant charge
d. All the above - correct Answers-d. All the above
Type II classification, as identified by EPA, applies to what equipment?
a. Small appliances with five (5) pounds of refrigerant or less
b. Refrigerators, freezers, and vending machine appliances
c. Low pressure appliances
d. Split air conditioning equipment with five (5) pounds of refrigerant
or more - correct Answers-d. Split air conditioning equipment with five (5) pounds of
refrigerant
or more
What are the leak repair requirements for comfort cooling appliances and commercial
Appliances containing 50 lbs. or more of refrigerant?
, a. Must be repaired if leak rate exceeds 15% in comfort cooling appliances.
b. Must be repaired if leak rate exceeds 35% in all commercial and industrial
process refrigeration\
c. a and b
d. None of the above - correct Answers-c. a and b
What type of refrigerant was the most common before outlawing CFCs and
HCFCs?
a. R-12
b. R-22
c. R-500
d. R-134A - correct Answers-b. R-22
The required level of evacuation for recovery equipment manufactured after
November 15, 1993, on a system containing less than 200 pounds of R-12
refrigerant is:
a. 0 inches Hg
b. 4 inches Hg
c. 10 inches Hg
d. 15 inches Hg - correct Answers-c. 10 inches Hg
What is the purpose of the filter drier and when should it be changed?
a. To filter the oil. Change every year.
b. To remove moisture from the refrigerant, replace on a routine basis
or anytime a system is opened
c. Cleans the air. Replace monthly
d. Dryer's air filters. Replace yearly - correct Answers-b. To remove moisture from the
refrigerant, replace on a routine basis or anytime a system is opened
Industrial process and commercial refrigeration equipment with over 50 pounds
of refrigerant with an annual leak rate of ___ % requires repair under EPA
regulations.
a. 0
b. 15
c. 35
d. 50 - correct Answers-c. 35
How can you tell through a sight glass if there is excess moisture in the system?
a. You can see moisture bubbles
b. Look for color changes of the refrigerant
c. You can see gas bubbles
d. Site glass is clear - correct Answers-b. Look for color changes of the refrigerant
Comfort cooling chillers and all other equipment with over 50 pounds of
refrigerant with an annual leak rate of ___ % requires repair under EPA
regulations:
