2
EPA 608 FINAL EXAM WITH VERIFIED DETAILED ANSWERS
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When using NITROGEN in any HVAC application what is always required?? - ✔✔REGULATOR
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Flaring (Flared Fittings) are classified as what kind of connection?? - ✔✔MECHANICAL/
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COMPRESSION (Bell Shape) || ||
Swaging is a method of expanding copper to create what kind of connection?? -
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✔✔BRAZED/WELDED
What is the purpose of a nitrogen purge when brazing?? - ✔✔To prevent OXIDATION of the
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copper.
Approximately what PSI should a tech's Nitrogen purge be set when brazing?? - ✔✔1- 2 PSI
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CFCs & HCFCs when exposed to open flame or very hot surface can produce what hazard? -
|| || || || || || || || || || || || || || || ||
✔✔PHOSGENE GAS
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What is the purpose of a system pressure test after conducting a sealed system repair?? -
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✔✔To IDENTIFY LEAKS in the system
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When conducting a system pressure test, what is used to pressurized the system?? -
|| || || || || || || || || || || || || ||
✔✔NITROGEN
Which leak detection method is best for Pinpointing leak location?? - ✔✔SOAP BUBBLE
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METHOD
, 2
Which leak detection method is best for generalized leak detection?? - ✔✔Electronic leak
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detector / Ultrasonic leak detector
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ASHRAE SAFTEY #15 - ✔✔Mechanical Safety
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ASHRAE - ✔✔The American Society of Heating, Refrigerating and Air-Conditioning Engineers
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Ozone in made of what atoms? - ✔✔3- OXYGEN ATOMS
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Which chemical in CFCs and HCFCs destroys ozone?? - ✔✔CHLORINE
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What kind of problem is ozone depletion?? - ✔✔GLOBAL
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Which of the following is used as the baseline measurement for "Global Warming
|| || || || || || || || || || || || ||
Potential?? - ✔✔CARBON DIOXIDE || || ||
The "MONTREAL PROTOCOL" is a treaty which: - ✔✔Addresses ozone depleting substances
|| || || || || || || || || || || ||
and their ALTERNATIVES.
|| ||
The "Clean Air Act" sets the standards and regulations for: - ✔✔The handling and use of
|| || || || || || || || || || || || || || || ||
refrigerant/ Air emissions from stationary & mobile sources.
|| || || || || || ||
Recovery tanks for refrigerant must be all of the following (EXCEPT) - ✔✔Filled to 95%
|| || || || || || || || || || || || || || ||
capacity
Which of the following is an ACTIVE recovery process?? - ✔✔Using a RECOVERY MACHINE
|| || || || || || || || || || || || || ||
to move refrigerant.
|| ||
EPA 608 FINAL EXAM WITH VERIFIED DETAILED ANSWERS
|| || || || || || ||
When using NITROGEN in any HVAC application what is always required?? - ✔✔REGULATOR
|| || || || || || || || || || || ||
Flaring (Flared Fittings) are classified as what kind of connection?? - ✔✔MECHANICAL/
|| || || || || || || || || || || ||
COMPRESSION (Bell Shape) || ||
Swaging is a method of expanding copper to create what kind of connection?? -
|| || || || || || || || || || || || || ||
✔✔BRAZED/WELDED
What is the purpose of a nitrogen purge when brazing?? - ✔✔To prevent OXIDATION of the
|| || || || || || || || || || || || || || || ||
copper.
Approximately what PSI should a tech's Nitrogen purge be set when brazing?? - ✔✔1- 2 PSI
|| || || || || || || || || || || || || || ||
CFCs & HCFCs when exposed to open flame or very hot surface can produce what hazard? -
|| || || || || || || || || || || || || || || ||
✔✔PHOSGENE GAS
|| ||
What is the purpose of a system pressure test after conducting a sealed system repair?? -
|| || || || || || || || || || || || || || || ||
✔✔To IDENTIFY LEAKS in the system
|| || || || ||
When conducting a system pressure test, what is used to pressurized the system?? -
|| || || || || || || || || || || || || ||
✔✔NITROGEN
Which leak detection method is best for Pinpointing leak location?? - ✔✔SOAP BUBBLE
|| || || || || || || || || || || || ||
METHOD
, 2
Which leak detection method is best for generalized leak detection?? - ✔✔Electronic leak
|| || || || || || || || || || || || ||
detector / Ultrasonic leak detector
|| || || ||
ASHRAE SAFTEY #15 - ✔✔Mechanical Safety
|| || || || ||
ASHRAE - ✔✔The American Society of Heating, Refrigerating and Air-Conditioning Engineers
|| || || || || || || || || ||
Ozone in made of what atoms? - ✔✔3- OXYGEN ATOMS
|| || || || || || || || ||
Which chemical in CFCs and HCFCs destroys ozone?? - ✔✔CHLORINE
|| || || || || || || || ||
What kind of problem is ozone depletion?? - ✔✔GLOBAL
|| || || || || || || ||
Which of the following is used as the baseline measurement for "Global Warming
|| || || || || || || || || || || || ||
Potential?? - ✔✔CARBON DIOXIDE || || ||
The "MONTREAL PROTOCOL" is a treaty which: - ✔✔Addresses ozone depleting substances
|| || || || || || || || || || || ||
and their ALTERNATIVES.
|| ||
The "Clean Air Act" sets the standards and regulations for: - ✔✔The handling and use of
|| || || || || || || || || || || || || || || ||
refrigerant/ Air emissions from stationary & mobile sources.
|| || || || || || ||
Recovery tanks for refrigerant must be all of the following (EXCEPT) - ✔✔Filled to 95%
|| || || || || || || || || || || || || || ||
capacity
Which of the following is an ACTIVE recovery process?? - ✔✔Using a RECOVERY MACHINE
|| || || || || || || || || || || || || ||
to move refrigerant.
|| ||
