EPA 608 UPDATED EXAM SCRIPT QUESTIONS AND
ANSWERS GUARANTEE A+
✔✔These atoms attack Ozone Molecules causing the formation of Chlorine Monoxide
(CLO), after colliding with another Ozone Molecule, causes 2 Oxygen (O2) molecules to
be made & leaving an atom of chlorine to act as "Free Agent" starting the process over
until 100,000 molecules of Ozone are destroyed by just one atom of chloride. - ✔✔What
happens when CFC or HCFC molecules get in the stratosphere & free atoms of
Chlorine are set free?
✔✔November 15, 1993 - ✔✔What date was recovery equipment required to be certified
by a lab, & achieve higher evacuation levels, & have low loss fittings?
✔✔November 14, 1994 - ✔✔On what date was technician certification required?
✔✔December 31, 1995 - ✔✔What date were CFC's phased out of production?
✔✔Persons who maintain, service, repair, or dispose of small appliances (containing 5
pounds of refrigerant (or less). - ✔✔What is EPA 608 Type I certification?
✔✔Persons who maintain, service, repair, or dispose of high and very high pressure
appliances. Except small appliances and motor vehicle air conditioning systems. -
✔✔What is EPA 608 Type II certification?
✔✔Persons who maintain, service, repair, or dispose of low pressure appliances. -
✔✔What is EPA 608 Type III certification?
✔✔Persons who maintain, service, repair, or dispose of both low and high pressure
equipment, as well as appliances. - ✔✔What is EPA 608 Universal certification?
✔✔HydroChloroFluoroCarbons - ✔✔HCFC's
✔✔Commonly known as HCFC's, they are a group of man-made compunds containing
hydrogen, chlorine, fluorine, and carbon. - ✔✔What are HydroChloroFluoroCarbons?
✔✔80% - ✔✔A recovery cylinder must not be filled more than ___ % of it's capacity by
weight?
✔✔Up-right with proper DOT classification tags. - ✔✔How should refrigerant cylinders
be shipped?
✔✔Polyolester - ✔✔What oil MUST be used with ALL HFC's for HVAC/Refrigeration but
will also work with CFC's and HCFC's.
,✔✔Trillion - ✔✔HCFC's have very low atmospheric concentrations measured in parts
per?
✔✔15% - ✔✔All cooling systems containing more than 50 lbs. of refrigerant must be
repaired when the annual leak rate exceeds___?
✔✔All CFC's - ✔✔Mineral Oils are used with?
✔✔HCFC's (Will also work with CFC's) - ✔✔Alkebenzene is used alone or as an
additive for?
✔✔Polyolester - ✔✔POE
✔✔A small appliance that is manufactured, charged, and hermetically sealed in a
factory with 5 lbs. of refrigerant or less. - ✔✔What is the definition of a Type I
Appliance?
✔✔High pressure or very high pressure appliances except for small appliances and
motor vehicle air conditioning. Refrigeration systems containing more than 5 Lbs. of
high or very high pressure refrigerants. - ✔✔What is the definition of a Type II
Appliance?
✔✔Low pressure equipment like low pressure chillers. - ✔✔What is the definition of a
Type III Appliance?
✔✔1-399 and 600 and above. - ✔✔All refrigerants are assumed to be a single chemical
if they are numbered what?
✔✔A mixture of two or more liquids in such a ratio that it's composition cannot be
changed by vaporizing it. - ✔✔What is an Azeotrope?
✔✔500 to 599 - ✔✔Azeotrope's are numbered what?
✔✔When the refrigerant leaks, it leaks out in different rates due to the different
pressures. - ✔✔What is fractionation?
✔✔When the temperature of the vaporizing refrigerant changes, even though the
pressure remains the same. - ✔✔What is Temperature Glide?
✔✔Self-Contained and System-Dependent. - ✔✔What are the two basic types of
recovery devices?
, ✔✔15 Lbs of refrigerant or less - ✔✔System-Dependent devices may only be used on
appliances containing how much refrigerant?
✔✔A refrigerant label. - ✔✔What MUST be placed on a refrigerant cylinder being
returned for reclaiming.
✔✔Trapping liquid refrigerant between the service valves. - ✔✔After completing the
transfer of liquid refrigerant between a recovery unit and a refrigeration system, you
should guard against what?
✔✔Charge through a pressure regulator. - ✔✔When pressurizing a system with
nitrogen, you should always?
✔✔Recover, Recycle, and Reclaim. - ✔✔What are the three "R's"?
✔✔To remove refrigerant in any condition from a system and store it in an external
approved container. - ✔✔In relation to the three "R's" what is Recover?
✔✔To clean refrigerant for reuse by seperating the oil from the refrigerant and removing
moisture from the refrigerant by passing it through one or more filter dryers. - ✔✔In
relation to the three "R's" what is Recycle?
✔✔It cannot be re-sold but it can be re-used. - ✔✔Can Recycled refrigerant be resold?
✔✔To process refrigerant to a level equal to new (virgin) product specifications as
determined by chemical analysis. - ✔✔In relation to the three "R's" what is Reclaim?
✔✔Yes, but must meet the standard set forth in ARI 700 before it can be resold. -
✔✔Can Reclaimed refrigerant be resold?
✔✔Chlorine Monoxide (CLO) - ✔✔What chemical has been found in the stratosphere
indicating ozone depletion?
✔✔1.Household refrigerators
2.Household freezers
3.Room air conditioners
4.Water Coolers
5.Drinking fountains - ✔✔What are 5 Type I appliances?
✔✔1.Walk-in coolers
2.Walk-in freezers
3.Reach-in refrigerators
4.Reach-in freezers
5.Residential & Commercial comfort cooling systems
ANSWERS GUARANTEE A+
✔✔These atoms attack Ozone Molecules causing the formation of Chlorine Monoxide
(CLO), after colliding with another Ozone Molecule, causes 2 Oxygen (O2) molecules to
be made & leaving an atom of chlorine to act as "Free Agent" starting the process over
until 100,000 molecules of Ozone are destroyed by just one atom of chloride. - ✔✔What
happens when CFC or HCFC molecules get in the stratosphere & free atoms of
Chlorine are set free?
✔✔November 15, 1993 - ✔✔What date was recovery equipment required to be certified
by a lab, & achieve higher evacuation levels, & have low loss fittings?
✔✔November 14, 1994 - ✔✔On what date was technician certification required?
✔✔December 31, 1995 - ✔✔What date were CFC's phased out of production?
✔✔Persons who maintain, service, repair, or dispose of small appliances (containing 5
pounds of refrigerant (or less). - ✔✔What is EPA 608 Type I certification?
✔✔Persons who maintain, service, repair, or dispose of high and very high pressure
appliances. Except small appliances and motor vehicle air conditioning systems. -
✔✔What is EPA 608 Type II certification?
✔✔Persons who maintain, service, repair, or dispose of low pressure appliances. -
✔✔What is EPA 608 Type III certification?
✔✔Persons who maintain, service, repair, or dispose of both low and high pressure
equipment, as well as appliances. - ✔✔What is EPA 608 Universal certification?
✔✔HydroChloroFluoroCarbons - ✔✔HCFC's
✔✔Commonly known as HCFC's, they are a group of man-made compunds containing
hydrogen, chlorine, fluorine, and carbon. - ✔✔What are HydroChloroFluoroCarbons?
✔✔80% - ✔✔A recovery cylinder must not be filled more than ___ % of it's capacity by
weight?
✔✔Up-right with proper DOT classification tags. - ✔✔How should refrigerant cylinders
be shipped?
✔✔Polyolester - ✔✔What oil MUST be used with ALL HFC's for HVAC/Refrigeration but
will also work with CFC's and HCFC's.
,✔✔Trillion - ✔✔HCFC's have very low atmospheric concentrations measured in parts
per?
✔✔15% - ✔✔All cooling systems containing more than 50 lbs. of refrigerant must be
repaired when the annual leak rate exceeds___?
✔✔All CFC's - ✔✔Mineral Oils are used with?
✔✔HCFC's (Will also work with CFC's) - ✔✔Alkebenzene is used alone or as an
additive for?
✔✔Polyolester - ✔✔POE
✔✔A small appliance that is manufactured, charged, and hermetically sealed in a
factory with 5 lbs. of refrigerant or less. - ✔✔What is the definition of a Type I
Appliance?
✔✔High pressure or very high pressure appliances except for small appliances and
motor vehicle air conditioning. Refrigeration systems containing more than 5 Lbs. of
high or very high pressure refrigerants. - ✔✔What is the definition of a Type II
Appliance?
✔✔Low pressure equipment like low pressure chillers. - ✔✔What is the definition of a
Type III Appliance?
✔✔1-399 and 600 and above. - ✔✔All refrigerants are assumed to be a single chemical
if they are numbered what?
✔✔A mixture of two or more liquids in such a ratio that it's composition cannot be
changed by vaporizing it. - ✔✔What is an Azeotrope?
✔✔500 to 599 - ✔✔Azeotrope's are numbered what?
✔✔When the refrigerant leaks, it leaks out in different rates due to the different
pressures. - ✔✔What is fractionation?
✔✔When the temperature of the vaporizing refrigerant changes, even though the
pressure remains the same. - ✔✔What is Temperature Glide?
✔✔Self-Contained and System-Dependent. - ✔✔What are the two basic types of
recovery devices?
, ✔✔15 Lbs of refrigerant or less - ✔✔System-Dependent devices may only be used on
appliances containing how much refrigerant?
✔✔A refrigerant label. - ✔✔What MUST be placed on a refrigerant cylinder being
returned for reclaiming.
✔✔Trapping liquid refrigerant between the service valves. - ✔✔After completing the
transfer of liquid refrigerant between a recovery unit and a refrigeration system, you
should guard against what?
✔✔Charge through a pressure regulator. - ✔✔When pressurizing a system with
nitrogen, you should always?
✔✔Recover, Recycle, and Reclaim. - ✔✔What are the three "R's"?
✔✔To remove refrigerant in any condition from a system and store it in an external
approved container. - ✔✔In relation to the three "R's" what is Recover?
✔✔To clean refrigerant for reuse by seperating the oil from the refrigerant and removing
moisture from the refrigerant by passing it through one or more filter dryers. - ✔✔In
relation to the three "R's" what is Recycle?
✔✔It cannot be re-sold but it can be re-used. - ✔✔Can Recycled refrigerant be resold?
✔✔To process refrigerant to a level equal to new (virgin) product specifications as
determined by chemical analysis. - ✔✔In relation to the three "R's" what is Reclaim?
✔✔Yes, but must meet the standard set forth in ARI 700 before it can be resold. -
✔✔Can Reclaimed refrigerant be resold?
✔✔Chlorine Monoxide (CLO) - ✔✔What chemical has been found in the stratosphere
indicating ozone depletion?
✔✔1.Household refrigerators
2.Household freezers
3.Room air conditioners
4.Water Coolers
5.Drinking fountains - ✔✔What are 5 Type I appliances?
✔✔1.Walk-in coolers
2.Walk-in freezers
3.Reach-in refrigerators
4.Reach-in freezers
5.Residential & Commercial comfort cooling systems
