EPA Section 608 Type II Exam Practice
Questions With Verified Answers & Explanations
(GRADED A+)
Q1. A high-pressure appliance containing 60 pounds of R-22 is found to have
an annual leak rate of 15%. What action is required under EPA Section 608
regulations?
A. No action is required because the leak rate is below the threshold for all
systems.
B. The system must be immediately retrofitted or retired within 30 days.
C. The leak must be repaired or a formal retirement plan developed within 30
days.
D. The owner must report the leak directly to the EPA regional administrator.
VERIFIED ANSWER: C. The leak must be repaired or a formal retirement plan
developed within 30 days.
RATIONALE: The EPA leak trigger rate for comfort cooling appliances with 50
or more pounds of regulated refrigerant is 10%. Because 15% exceeds this
statutory threshold, the system owner or operator must successfully
repair the leak or draft a formal retrofit/retirement plan within 30 days.
Q2. Which of the following parameters determines the mandatory
evacuation level required for a high-pressure appliance using recovery
equipment manufactured after November 15, 1993?
A. The atmospheric pressure and ambient air temperature
,B. The type of synthetic oil used in the compressor crankcase
C. The specific category of refrigerant and the total system charge weight
D. The physical length and diameter of the service manifold hoses
VERIFIED ANSWER: C. The specific category of refrigerant and the total
system charge weight
RATIONALE: Under EPA Section 608, recovery and evacuation depths are
strictly dictated by the operating pressure classification of the refrigerant
(e.g., high-pressure vs. low-pressure) and the total system charge volume
(whether it holds more or less than 200 pounds).
Q3. What is the mandatory recovery vacuum level required for a medium-
pressure appliance containing less than 200 pounds of R-407C when using
recovery equipment manufactured after November 15, 1993?
A. 0 inches Hg
B. 4 inches Hg
C. 10 inches Hg
D. 15 inches Hg
VERIFIED ANSWER: C. 10 inches Hg
RATIONALE: For high-pressure and medium-pressure appliances containing
less than 200 pounds of regulated refrigerant, technicians utilizing post-
1993 certified recovery equipment must pull a structural vacuum of at least
10 inches of mercury (Hg).
Q4. What is the mandatory recovery vacuum level required for a medium-
pressure appliance containing 200 pounds or more of R-22 when using
,recovery equipment manufactured after November 15, 1993?
A. 0 inches Hg
B. 10 inches Hg
C. 15 inches Hg
D. 25 inches Hg
VERIFIED ANSWER: C. 15 inches Hg
RATIONALE: For high-pressure or medium-pressure appliances containing a
total charge of 200 pounds or more, the mandatory evacuation depth
increases to 15 inches of mercury (Hg) to minimize residual emissions from
large-capacity equipment.
Q5. If an appliance with a charge of 50 pounds or more leaks 125% or more
of its full structural charge within a single calendar year, what is the
owner's legal obligation?
A. The system must be reported directly to the EPA.
B. The system must be scrapped within 48 hours without exception.
C. The technician must replace all system filters every 30 days.
D. The owner must purchase carbon offsets matching the leaked volume.
VERIFIED ANSWER: A. The system must be reported directly to the EPA.
RATIONALE: EPA Section 608 regulations mandate that any appliance
containing 50 or more pounds of a regulated refrigerant that loses 125% or
more of its complete design charge within a single calendar year must be
formally reported to the EPA, including a detailed log of repair attempts.
, Q6. Under what technical condition permits a technician to stop evacuation
at 0 psig instead of pulling the mandated vacuum?
A. If the system is scheduled for a cosmetic paint upgrade.
B. If the technician does not have a functional digital micron gauge.
C. If continuing the vacuum would pull atmospheric air or moisture into a known
system leak.
D. If the ambient temperature falls below 32 degrees Fahrenheit.
VERIFIED ANSWER: C. If continuing the vacuum would pull atmospheric air or
moisture into a known system leak.
RATIONALE: If an appliance has a structural breach or open leak to the
atmosphere, pulling a deep vacuum below atmospheric pressure (0 psig)
would introduce highly destructive ambient air and moisture into the
system or recovery equipment, which justifies stopping the process at
exactly 0 psig.
Q7. What type of leak verification tests are legally required after completing
a repair on a commercial refrigeration system containing 80 pounds of
refrigerant?
A. An electronic leak detector sweep performed exactly 12 months post-repair.
B. An initial verification test before charging and a follow-up verification test after
the system returns to normal operating thermal conditions.
C. A high-pressure standing test using pure oxygen gas.
D. A single vacuum hold test monitored for 5 minutes.
VERIFIED ANSWER: B. An initial verification test before charging and a follow-
up verification test after the system returns to normal operating thermal
conditions.
Questions With Verified Answers & Explanations
(GRADED A+)
Q1. A high-pressure appliance containing 60 pounds of R-22 is found to have
an annual leak rate of 15%. What action is required under EPA Section 608
regulations?
A. No action is required because the leak rate is below the threshold for all
systems.
B. The system must be immediately retrofitted or retired within 30 days.
C. The leak must be repaired or a formal retirement plan developed within 30
days.
D. The owner must report the leak directly to the EPA regional administrator.
VERIFIED ANSWER: C. The leak must be repaired or a formal retirement plan
developed within 30 days.
RATIONALE: The EPA leak trigger rate for comfort cooling appliances with 50
or more pounds of regulated refrigerant is 10%. Because 15% exceeds this
statutory threshold, the system owner or operator must successfully
repair the leak or draft a formal retrofit/retirement plan within 30 days.
Q2. Which of the following parameters determines the mandatory
evacuation level required for a high-pressure appliance using recovery
equipment manufactured after November 15, 1993?
A. The atmospheric pressure and ambient air temperature
,B. The type of synthetic oil used in the compressor crankcase
C. The specific category of refrigerant and the total system charge weight
D. The physical length and diameter of the service manifold hoses
VERIFIED ANSWER: C. The specific category of refrigerant and the total
system charge weight
RATIONALE: Under EPA Section 608, recovery and evacuation depths are
strictly dictated by the operating pressure classification of the refrigerant
(e.g., high-pressure vs. low-pressure) and the total system charge volume
(whether it holds more or less than 200 pounds).
Q3. What is the mandatory recovery vacuum level required for a medium-
pressure appliance containing less than 200 pounds of R-407C when using
recovery equipment manufactured after November 15, 1993?
A. 0 inches Hg
B. 4 inches Hg
C. 10 inches Hg
D. 15 inches Hg
VERIFIED ANSWER: C. 10 inches Hg
RATIONALE: For high-pressure and medium-pressure appliances containing
less than 200 pounds of regulated refrigerant, technicians utilizing post-
1993 certified recovery equipment must pull a structural vacuum of at least
10 inches of mercury (Hg).
Q4. What is the mandatory recovery vacuum level required for a medium-
pressure appliance containing 200 pounds or more of R-22 when using
,recovery equipment manufactured after November 15, 1993?
A. 0 inches Hg
B. 10 inches Hg
C. 15 inches Hg
D. 25 inches Hg
VERIFIED ANSWER: C. 15 inches Hg
RATIONALE: For high-pressure or medium-pressure appliances containing a
total charge of 200 pounds or more, the mandatory evacuation depth
increases to 15 inches of mercury (Hg) to minimize residual emissions from
large-capacity equipment.
Q5. If an appliance with a charge of 50 pounds or more leaks 125% or more
of its full structural charge within a single calendar year, what is the
owner's legal obligation?
A. The system must be reported directly to the EPA.
B. The system must be scrapped within 48 hours without exception.
C. The technician must replace all system filters every 30 days.
D. The owner must purchase carbon offsets matching the leaked volume.
VERIFIED ANSWER: A. The system must be reported directly to the EPA.
RATIONALE: EPA Section 608 regulations mandate that any appliance
containing 50 or more pounds of a regulated refrigerant that loses 125% or
more of its complete design charge within a single calendar year must be
formally reported to the EPA, including a detailed log of repair attempts.
, Q6. Under what technical condition permits a technician to stop evacuation
at 0 psig instead of pulling the mandated vacuum?
A. If the system is scheduled for a cosmetic paint upgrade.
B. If the technician does not have a functional digital micron gauge.
C. If continuing the vacuum would pull atmospheric air or moisture into a known
system leak.
D. If the ambient temperature falls below 32 degrees Fahrenheit.
VERIFIED ANSWER: C. If continuing the vacuum would pull atmospheric air or
moisture into a known system leak.
RATIONALE: If an appliance has a structural breach or open leak to the
atmosphere, pulling a deep vacuum below atmospheric pressure (0 psig)
would introduce highly destructive ambient air and moisture into the
system or recovery equipment, which justifies stopping the process at
exactly 0 psig.
Q7. What type of leak verification tests are legally required after completing
a repair on a commercial refrigeration system containing 80 pounds of
refrigerant?
A. An electronic leak detector sweep performed exactly 12 months post-repair.
B. An initial verification test before charging and a follow-up verification test after
the system returns to normal operating thermal conditions.
C. A high-pressure standing test using pure oxygen gas.
D. A single vacuum hold test monitored for 5 minutes.
VERIFIED ANSWER: B. An initial verification test before charging and a follow-
up verification test after the system returns to normal operating thermal
conditions.
