EPA 608 TEST FINAL EXAM QUESTIONS AND
ANSWERS (VERIFIED AND WELL DETAILED
ANSWERS) LATEST UPDATE 2024/2025
When using NITROGEN in any HVAC application what is always required?? -
...(ANSWERS)....REGULATOR
Flaring (Flared Fittings) are classified as what kind of connection?? -
...(ANSWERS)....MECHANICAL/ COMPRESSION (Bell Shape)
Swaging is a method of expanding copper to create what kind of connection?? -
...(ANSWERS)....BRAZED/WELDED
What is the purpose of a nitrogen purge when brazing?? - ...(ANSWERS)....To
prevent OXIDATION of the copper.
Approximately what PSI should a tech's Nitrogen purge be set when brazing?? -
...(ANSWERS)....1- 2 PSI
CFCs & HCFCs when exposed to open flame or very hot surface can produce what
hazard? - ...(ANSWERS)....PHOSGENE GAS
What is the purpose of a system pressure test after conducting a sealed system
repair?? - ...(ANSWERS)....To IDENTIFY LEAKS in the system
, When conducting a system pressure test, what is used to pressurized the
system?? - ...(ANSWERS)....NITROGEN
Which leak detection method is best for Pinpointing leak location?? -
...(ANSWERS)....SOAP BUBBLE METHOD
Which leak detection method is best for generalized leak detection?? -
...(ANSWERS)....Electronic leak detector / Ultrasonic leak detector
ASHRAE SAFTEY #15 - ...(ANSWERS)....Mechanical Safety
ASHRAE - ...(ANSWERS)....The American Society of Heating, Refrigerating and Air-
Conditioning Engineers
Ozone in made of what atoms? - ...(ANSWERS)....3- OXYGEN ATOMS
Which chemical in CFCs and HCFCs destroys ozone?? - ...(ANSWERS)....CHLORINE
What kind of problem is ozone depletion?? - ...(ANSWERS)....GLOBAL
Which of the following is used as the baseline measurement for "Global Warming
Potential?? - ...(ANSWERS)....CARBON DIOXIDE
ANSWERS (VERIFIED AND WELL DETAILED
ANSWERS) LATEST UPDATE 2024/2025
When using NITROGEN in any HVAC application what is always required?? -
...(ANSWERS)....REGULATOR
Flaring (Flared Fittings) are classified as what kind of connection?? -
...(ANSWERS)....MECHANICAL/ COMPRESSION (Bell Shape)
Swaging is a method of expanding copper to create what kind of connection?? -
...(ANSWERS)....BRAZED/WELDED
What is the purpose of a nitrogen purge when brazing?? - ...(ANSWERS)....To
prevent OXIDATION of the copper.
Approximately what PSI should a tech's Nitrogen purge be set when brazing?? -
...(ANSWERS)....1- 2 PSI
CFCs & HCFCs when exposed to open flame or very hot surface can produce what
hazard? - ...(ANSWERS)....PHOSGENE GAS
What is the purpose of a system pressure test after conducting a sealed system
repair?? - ...(ANSWERS)....To IDENTIFY LEAKS in the system
, When conducting a system pressure test, what is used to pressurized the
system?? - ...(ANSWERS)....NITROGEN
Which leak detection method is best for Pinpointing leak location?? -
...(ANSWERS)....SOAP BUBBLE METHOD
Which leak detection method is best for generalized leak detection?? -
...(ANSWERS)....Electronic leak detector / Ultrasonic leak detector
ASHRAE SAFTEY #15 - ...(ANSWERS)....Mechanical Safety
ASHRAE - ...(ANSWERS)....The American Society of Heating, Refrigerating and Air-
Conditioning Engineers
Ozone in made of what atoms? - ...(ANSWERS)....3- OXYGEN ATOMS
Which chemical in CFCs and HCFCs destroys ozone?? - ...(ANSWERS)....CHLORINE
What kind of problem is ozone depletion?? - ...(ANSWERS)....GLOBAL
Which of the following is used as the baseline measurement for "Global Warming
Potential?? - ...(ANSWERS)....CARBON DIOXIDE
