EPA 608 EXAM NEWEST ACTUAL EXAM COMPLETE
ALL 100 QUESTIONS AND CORRECT DETAILED
ANSWERS
What is the purpose of the recovery cylinder's relief valve? - ANSWER -To prevent
over-pressurization of the cylinder
What is the purpose of a heat exchanger in an HVAC system? - ANSWER -To transfer
heat between two fluid streams
Which refrigerant is commonly used as a propellant in aerosol products and is
classified as a hydrochlorofluorocarbon (HCFC)? - ANSWER -R-22
What is the critical temperature of a refrigerant? - ANSWER -The temperature above
which the refrigerant cannot be condensed into a liquid regardless of pressure
Which component is responsible for metering the flow of refrigerant into the evaporator
in a refrigeration system? - ANSWER -Expansion valve
Which refrigerant is known for its low Global Warming Potential (GWP) and is often
used as a replacement for R-22? - ANSWER -R-290 (Propane)
When should a technician wear safety goggles while working with refrigerants? -
ANSWER -When handling liquid refrigerant
What is the maximum allowable leak rate for a comfort cooling appliance under EPA
regulations? - ANSWER -20%
Which type of refrigerant can be identified by the trade name "Freon"? - ANSWER -R-
22
What is the primary purpose of the filter-drier in a refrigeration system? - ANSWER -To
remove moisture and contaminants from the refrigerant
When recovering refrigerant from an appliance, where should the technician connect
the recovery equipment? - ANSWER -To the low-pressure side
, Which type of HVAC system is most commonly found in residential applications? -
ANSWER -Split-system
What is the purpose of the sight glass in a refrigeration system's liquid line? - ANSWER
-To provide a visual check for refrigerant leaks
____________________ is NOT a type of EPA-608 certification? - ANSWER -Type A
What is the primary responsibility of a Type III certified technician? - ANSWER -a)
Servicing low-pressure appliances
What is the minimum evacuation time required when recovering refrigerant from a
system? - ANSWER -30 minutes
Which refrigerant classification is flammable and often used in small appliances like
domestic refrigerators? - ANSWER -Class III
What type of refrigerant should be used for appliances that have a charge of less than
5 pounds? - ANSWER -R-600a
What is the purpose of the Schrader valve in an HVAC system? - ANSWER -To
provide a port for connecting gauges and hoses
___________________ is NOT a required safety equipment when working with
refrigerants. - ANSWER -Hard hat
What is the typical color-code for high-pressure refrigerant hoses and gauges? -
ANSWER -Red
Which refrigerants has the highest ozone depletion potential (ODP)? - ANSWER -R-22
How should a technician properly dispose of used refrigerant oil? - ANSWER -Dispose
of it in a hazardous waste facility
What is the primary purpose of the evaporator in a refrigeration system? - ANSWER -
To evaporate the refrigerant
_________________ is an example of a low-pressure refrigerant? - ANSWER -R-717
(Ammonia)
What is the critical component used to prevent oil from circulating with the refrigerant in
a compressor? - ANSWER -Oil seperator
ALL 100 QUESTIONS AND CORRECT DETAILED
ANSWERS
What is the purpose of the recovery cylinder's relief valve? - ANSWER -To prevent
over-pressurization of the cylinder
What is the purpose of a heat exchanger in an HVAC system? - ANSWER -To transfer
heat between two fluid streams
Which refrigerant is commonly used as a propellant in aerosol products and is
classified as a hydrochlorofluorocarbon (HCFC)? - ANSWER -R-22
What is the critical temperature of a refrigerant? - ANSWER -The temperature above
which the refrigerant cannot be condensed into a liquid regardless of pressure
Which component is responsible for metering the flow of refrigerant into the evaporator
in a refrigeration system? - ANSWER -Expansion valve
Which refrigerant is known for its low Global Warming Potential (GWP) and is often
used as a replacement for R-22? - ANSWER -R-290 (Propane)
When should a technician wear safety goggles while working with refrigerants? -
ANSWER -When handling liquid refrigerant
What is the maximum allowable leak rate for a comfort cooling appliance under EPA
regulations? - ANSWER -20%
Which type of refrigerant can be identified by the trade name "Freon"? - ANSWER -R-
22
What is the primary purpose of the filter-drier in a refrigeration system? - ANSWER -To
remove moisture and contaminants from the refrigerant
When recovering refrigerant from an appliance, where should the technician connect
the recovery equipment? - ANSWER -To the low-pressure side
, Which type of HVAC system is most commonly found in residential applications? -
ANSWER -Split-system
What is the purpose of the sight glass in a refrigeration system's liquid line? - ANSWER
-To provide a visual check for refrigerant leaks
____________________ is NOT a type of EPA-608 certification? - ANSWER -Type A
What is the primary responsibility of a Type III certified technician? - ANSWER -a)
Servicing low-pressure appliances
What is the minimum evacuation time required when recovering refrigerant from a
system? - ANSWER -30 minutes
Which refrigerant classification is flammable and often used in small appliances like
domestic refrigerators? - ANSWER -Class III
What type of refrigerant should be used for appliances that have a charge of less than
5 pounds? - ANSWER -R-600a
What is the purpose of the Schrader valve in an HVAC system? - ANSWER -To
provide a port for connecting gauges and hoses
___________________ is NOT a required safety equipment when working with
refrigerants. - ANSWER -Hard hat
What is the typical color-code for high-pressure refrigerant hoses and gauges? -
ANSWER -Red
Which refrigerants has the highest ozone depletion potential (ODP)? - ANSWER -R-22
How should a technician properly dispose of used refrigerant oil? - ANSWER -Dispose
of it in a hazardous waste facility
What is the primary purpose of the evaporator in a refrigeration system? - ANSWER -
To evaporate the refrigerant
_________________ is an example of a low-pressure refrigerant? - ANSWER -R-717
(Ammonia)
What is the critical component used to prevent oil from circulating with the refrigerant in
a compressor? - ANSWER -Oil seperator
