EPA Section 608 Core Exam |Questions with
100% Correct Answers | Updated & Verified
What process applies to cleaning refrigerant for immediate reuse by oil
separation and single or multiple passes through devices, like replaceable core
filter driers, which reduce moisture and acidity? - ✔️✔️Recycling
What leak detection method is considered to be the most efficient for locating
the general area of a small leak? - ✔️✔️Electronic or ultrasonic tester
What should a technician do if they discover that some R-410A was added to an
R-22 system? - ✔️✔️Recover the mixture into a separate recovery tank
Which factor does NOT affect the speed of evacuation? - ✔️✔️a. The size of the
equipment being evacuated
b. The ambient temperature
c. The amount of moisture in the system
d. The brand of micron gauge used
** d. The brand of micron gauge used
Which of the following is NO a recommended safety practice when operating
refrigerant recovery or recycling equipment? - ✔️✔️a. Wear safety glasses
b. Wear protective gloves
, c. Follow all safety precautions for the equipment
d. Remain at least 5 feet away from the operating equipment.
** d. Remain at least 5 feet away from the operating equipment.
Refrigerant cylinders should be all of the following EXCEPT: - ✔️✔️a. be free of rust
and damage
b. filled to 95% of capacity
c. be labeled
d. be secure
** b. filled to 95% of capacity
When transporting cylinders containing used refrigerant, DOT requires that you: -
✔️✔️Attach DOT classification tags
How does the global warming potential of R-410A compare to that of carbon
dioxide - ✔️✔️It is thousands of times greater
How do the global warming potentials of isobutane (R-600a), propane (R-290),
and R-441 compare to the GWPs of HFC 134a, R404a, and R-410A? - ✔️✔️They are
significantly lower
100% Correct Answers | Updated & Verified
What process applies to cleaning refrigerant for immediate reuse by oil
separation and single or multiple passes through devices, like replaceable core
filter driers, which reduce moisture and acidity? - ✔️✔️Recycling
What leak detection method is considered to be the most efficient for locating
the general area of a small leak? - ✔️✔️Electronic or ultrasonic tester
What should a technician do if they discover that some R-410A was added to an
R-22 system? - ✔️✔️Recover the mixture into a separate recovery tank
Which factor does NOT affect the speed of evacuation? - ✔️✔️a. The size of the
equipment being evacuated
b. The ambient temperature
c. The amount of moisture in the system
d. The brand of micron gauge used
** d. The brand of micron gauge used
Which of the following is NO a recommended safety practice when operating
refrigerant recovery or recycling equipment? - ✔️✔️a. Wear safety glasses
b. Wear protective gloves
, c. Follow all safety precautions for the equipment
d. Remain at least 5 feet away from the operating equipment.
** d. Remain at least 5 feet away from the operating equipment.
Refrigerant cylinders should be all of the following EXCEPT: - ✔️✔️a. be free of rust
and damage
b. filled to 95% of capacity
c. be labeled
d. be secure
** b. filled to 95% of capacity
When transporting cylinders containing used refrigerant, DOT requires that you: -
✔️✔️Attach DOT classification tags
How does the global warming potential of R-410A compare to that of carbon
dioxide - ✔️✔️It is thousands of times greater
How do the global warming potentials of isobutane (R-600a), propane (R-290),
and R-441 compare to the GWPs of HFC 134a, R404a, and R-410A? - ✔️✔️They are
significantly lower
