SKILLCAT EPA 608 EXAM QUESTIONS
AND ANSWERS VERIFIED 100%
CORRECT
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
stratosphere indicating ozone depletion?
1.Household refrigerators
2.Household freezers
3.Room air conditioners
, 4.Water Coolers
5.Drinking fountains - ANSWER -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
6.Ice machines - ANSWER -What are 6 Type II appliances?
Low pressure chiller. - ANSWER -What is an example of a Type III appliance?
When calculating Superheat. - ANSWER -When is "Dew Point" used?
When calculating Sub-cooling. - ANSWER -When is "Bubble Point" used?
EPA requires a service aperature (process stub). - ANSWER -What does the EPA
require on all Type I equipment that uses Class I or Class II refrigerants.
Thermostatic Expansion Valve - ANSWER -TXV
1.Evaporator
2.Condenser
3.Compressor
4.Auxillary Heat Exchanger - ANSWER -The EPA considers a major repair to be
the replacement of what 4 items?
The charging valve on the evaporator. - ANSWER -When the refrigerant is put
back into a Type III chiller, following recovery and system repair, where is it
added?
Hydrostatic (tube) test - ANSWER -What method is used to find suspected water
tube leaks in chillers?
AND ANSWERS VERIFIED 100%
CORRECT
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
stratosphere indicating ozone depletion?
1.Household refrigerators
2.Household freezers
3.Room air conditioners
, 4.Water Coolers
5.Drinking fountains - ANSWER -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
6.Ice machines - ANSWER -What are 6 Type II appliances?
Low pressure chiller. - ANSWER -What is an example of a Type III appliance?
When calculating Superheat. - ANSWER -When is "Dew Point" used?
When calculating Sub-cooling. - ANSWER -When is "Bubble Point" used?
EPA requires a service aperature (process stub). - ANSWER -What does the EPA
require on all Type I equipment that uses Class I or Class II refrigerants.
Thermostatic Expansion Valve - ANSWER -TXV
1.Evaporator
2.Condenser
3.Compressor
4.Auxillary Heat Exchanger - ANSWER -The EPA considers a major repair to be
the replacement of what 4 items?
The charging valve on the evaporator. - ANSWER -When the refrigerant is put
back into a Type III chiller, following recovery and system repair, where is it
added?
Hydrostatic (tube) test - ANSWER -What method is used to find suspected water
tube leaks in chillers?
