SkillCat EPA 608 EXAM ACTUAL
EXAM ALL 244 QUESTIONS AND
CORRECT DETAILED ANSWERS
WITH RATIONALES (VERIFIED
ANSWERS) |ALREADY GRADED A+
HVAC/Refrigeration but will also work with CFC's and HCFC's. Trillion -
ANSWER//HCFC's have very low atmospheric concentrations measured in
parts per? 15% - ANSWER//All cooling systems containing more than 50 lbs.
of refrigerant must be repaired when the annual leak rate exceeds___? All
CFC's - ANSWER//Mineral Oils are used with? HCFC's (Will also work with
CFC's) - ANSWER//Alkebenzene is used alone or as an additive for?
Polyolester - ANSWER//POE A small appliance that is manufactured, charged,
and hermetically sealed in a factory with 5 lbs. of refrigerant or less. -
ANSWER//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. - ANSWER//What is the definition of a Type II
Appliance? Low pressure equipment like low pressure chillers. -
ANSWER//What is the definition of a Type III Appliance? 1-399 and 600 and
above. - ANSWER//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. - ANSWER//What is an
Azeotrope? 500 to 599 - ANSWER//Azeotrope's are numbered what? When
the refrigerant leaks, it leaks out in different rates due to the different
pressures. - ANSWER//What is fractionation? When the temperature of the
vaporizing refrigerant changes, even though the pressure remains the same. -
ANSWER//What is Temperature Glide? Self-Contained and System-
Dependent. - ANSWER//What are the two basic types of recovery devices?
15 Lbs of refrigerant or less - ANSWER//System-Dependent devices may only
be used on appliances containing how much refrigerant? A refrigerant label. -
ANSWER//What MUST be placed on a refrigerant cylinder being returned for
reclaiming. Trapping liquid refrigerant between the service valves. -
ANSWER//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. - ANSWER//When pressurizing a
system with nitrogen, you should always? Recover, Recycle, and Reclaim. -
ANSWER//What are the three "R's"? To remove refrigerant in any condition
from a system and store it in an external approved container. - ANSWER//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. - ANSWER//In
, relation to the three "R's" what is Recycle? It cannot be re-sold but it can be
re-used. - ANSWER//Can Recycled refrigerant be resold? To process
refrigerant to a level equal to new (virgin) product specifications as
determined by chemical analysis. - ANSWER//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. - ANSWER//Can Reclaimed refrigerant be resold? Chlorine
Monoxide (CLO) - ANSWER//What chemical has been found in the
November 14, 1994 - ANSWER//What date was the sale of CFC's & HCFC's
restricted to technicians certified in refrigerant recovery? Memorize it, ya'll. -
ANSWER//1989- Montreal Protocol July 1 1992- Violation to vent CFCs or
HCFCs Nov 15 1993- Recovery/Recycling equipment must be certified and
labeled by EPA AND Before this date recovery equipment needed to be
capable of removing 80% of the refrigerant, w or wo compressor, or 4 in Hg
After this date recovery equipment needs to be capable of removing 90%, or
80% without working compressor, or 4 in Hg AND Required level of
evacuation for Low Pressure appliances before this date was 25 inches Hg,
after this date 25 mm Hg Nov 14 1994- Certification needed to service,
maintain, or dispose of appliances with refrigerants AND Sale of CFC and
HCFC refrigerants restricted to certified techs Nov 15 1995- Violation to vent
HFCs Dec 31 1995- CFCs no longer produced 15% - ANSWER//Comfort
cooling appliances containing more than 50 lbs of refrigerant must be repaired
when the annual leak rate exceeds _____% 35% - ANSWER//Commercial
and Industrial process refrigeration containing ore than 50 lbs of refrigerant
must be repaired when the annual leak rate exceeds _____% 0 0 4 10 4 10 4
15 0 0 - ANSWER//Required Recovery Levels for Type II appliances, before
and after 11/15/93: HCFC22 less than 200 lbs = B4-0 After-0 HCFC22 more
than 200 lbs= B4-4 After-10 NonHCFC22 less than 200 lbs= B4-4 After 10
NonHCFC22 more than 200 lbs= B4 4 After 15 Very high pressure
appliances= B4-0 After-0 Recover all refrigerants. - ANSWER//Section 608 of
the Federal Clean Air Act requires technicians to what? The earth's
stratosphere. - ANSWER//The objective of the Clean Air Act is to protect what?
HydroFlouroCarbon's - ANSWER//HFC's ChloroFluoroCarbon's -
ANSWER//CFC's Ozone Depletion Potential - ANSWER//ODP The Montreal
Protocol. - ANSWER//Which international treaty agreement was the basis for
Section 608? 1.Crop losses 2.Increases in eye diseases 3.Skin Cancer
4.Reduced marine life 5.Deforestation 6.Increased ground level ozone -
ANSWER//Depletion of the ozone in the stratosphere is known to cause what
6 things? 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. - ANSWER//What happens
when CFC or HCFC molecules get in the stratosphere & free atoms of
Chlorine are set free? November 15, 1993 - ANSWER//What date was
recovery equipment required to be certified by a lab, & achieve higher
evacuation levels, & have low loss fittings? November 14, 1994 -
ANSWER//On what date was technician certification required? December 31,
1995 - ANSWER//What date were CFC's phased out of production? Persons
who maintain, service, repair, or dispose of small appliances (containing 5
EXAM ALL 244 QUESTIONS AND
CORRECT DETAILED ANSWERS
WITH RATIONALES (VERIFIED
ANSWERS) |ALREADY GRADED A+
HVAC/Refrigeration but will also work with CFC's and HCFC's. Trillion -
ANSWER//HCFC's have very low atmospheric concentrations measured in
parts per? 15% - ANSWER//All cooling systems containing more than 50 lbs.
of refrigerant must be repaired when the annual leak rate exceeds___? All
CFC's - ANSWER//Mineral Oils are used with? HCFC's (Will also work with
CFC's) - ANSWER//Alkebenzene is used alone or as an additive for?
Polyolester - ANSWER//POE A small appliance that is manufactured, charged,
and hermetically sealed in a factory with 5 lbs. of refrigerant or less. -
ANSWER//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. - ANSWER//What is the definition of a Type II
Appliance? Low pressure equipment like low pressure chillers. -
ANSWER//What is the definition of a Type III Appliance? 1-399 and 600 and
above. - ANSWER//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. - ANSWER//What is an
Azeotrope? 500 to 599 - ANSWER//Azeotrope's are numbered what? When
the refrigerant leaks, it leaks out in different rates due to the different
pressures. - ANSWER//What is fractionation? When the temperature of the
vaporizing refrigerant changes, even though the pressure remains the same. -
ANSWER//What is Temperature Glide? Self-Contained and System-
Dependent. - ANSWER//What are the two basic types of recovery devices?
15 Lbs of refrigerant or less - ANSWER//System-Dependent devices may only
be used on appliances containing how much refrigerant? A refrigerant label. -
ANSWER//What MUST be placed on a refrigerant cylinder being returned for
reclaiming. Trapping liquid refrigerant between the service valves. -
ANSWER//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. - ANSWER//When pressurizing a
system with nitrogen, you should always? Recover, Recycle, and Reclaim. -
ANSWER//What are the three "R's"? To remove refrigerant in any condition
from a system and store it in an external approved container. - ANSWER//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. - ANSWER//In
, relation to the three "R's" what is Recycle? It cannot be re-sold but it can be
re-used. - ANSWER//Can Recycled refrigerant be resold? To process
refrigerant to a level equal to new (virgin) product specifications as
determined by chemical analysis. - ANSWER//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. - ANSWER//Can Reclaimed refrigerant be resold? Chlorine
Monoxide (CLO) - ANSWER//What chemical has been found in the
November 14, 1994 - ANSWER//What date was the sale of CFC's & HCFC's
restricted to technicians certified in refrigerant recovery? Memorize it, ya'll. -
ANSWER//1989- Montreal Protocol July 1 1992- Violation to vent CFCs or
HCFCs Nov 15 1993- Recovery/Recycling equipment must be certified and
labeled by EPA AND Before this date recovery equipment needed to be
capable of removing 80% of the refrigerant, w or wo compressor, or 4 in Hg
After this date recovery equipment needs to be capable of removing 90%, or
80% without working compressor, or 4 in Hg AND Required level of
evacuation for Low Pressure appliances before this date was 25 inches Hg,
after this date 25 mm Hg Nov 14 1994- Certification needed to service,
maintain, or dispose of appliances with refrigerants AND Sale of CFC and
HCFC refrigerants restricted to certified techs Nov 15 1995- Violation to vent
HFCs Dec 31 1995- CFCs no longer produced 15% - ANSWER//Comfort
cooling appliances containing more than 50 lbs of refrigerant must be repaired
when the annual leak rate exceeds _____% 35% - ANSWER//Commercial
and Industrial process refrigeration containing ore than 50 lbs of refrigerant
must be repaired when the annual leak rate exceeds _____% 0 0 4 10 4 10 4
15 0 0 - ANSWER//Required Recovery Levels for Type II appliances, before
and after 11/15/93: HCFC22 less than 200 lbs = B4-0 After-0 HCFC22 more
than 200 lbs= B4-4 After-10 NonHCFC22 less than 200 lbs= B4-4 After 10
NonHCFC22 more than 200 lbs= B4 4 After 15 Very high pressure
appliances= B4-0 After-0 Recover all refrigerants. - ANSWER//Section 608 of
the Federal Clean Air Act requires technicians to what? The earth's
stratosphere. - ANSWER//The objective of the Clean Air Act is to protect what?
HydroFlouroCarbon's - ANSWER//HFC's ChloroFluoroCarbon's -
ANSWER//CFC's Ozone Depletion Potential - ANSWER//ODP The Montreal
Protocol. - ANSWER//Which international treaty agreement was the basis for
Section 608? 1.Crop losses 2.Increases in eye diseases 3.Skin Cancer
4.Reduced marine life 5.Deforestation 6.Increased ground level ozone -
ANSWER//Depletion of the ozone in the stratosphere is known to cause what
6 things? 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. - ANSWER//What happens
when CFC or HCFC molecules get in the stratosphere & free atoms of
Chlorine are set free? November 15, 1993 - ANSWER//What date was
recovery equipment required to be certified by a lab, & achieve higher
evacuation levels, & have low loss fittings? November 14, 1994 -
ANSWER//On what date was technician certification required? December 31,
1995 - ANSWER//What date were CFC's phased out of production? Persons
who maintain, service, repair, or dispose of small appliances (containing 5
