EPA 608 Certification
Exam Test Questions With Revised
Correct Answers
BEST UPDATED COMBINED SET!!
What is an Azeotrope? - ANSWER A mixture of two or
more liquids in such a ratio that it's composition cannot be
changed by vaporizing it.
Azeotrope's are numbered what? - ANSWER 500 to 599
What is fractionation? - ANSWER When the refrigerant
leaks, it leaks out in different rates due to the different
pressures.
What is Temperature Glide? - ANSWER When the
temperature of the vaporizing refrigerant changes, even though
the pressure remains the same.
What are the two basic types of recovery devices? - ANSWER
Self-Contained and System-Dependent.
, System-Dependent devices may only be used on appliances
containing how much refrigerant? - ANSWER 15 Lbs of
refrigerant or less
What MUST be placed on a refrigerant cylinder being returned
for reclaiming. - ANSWER A refrigerant label.
After completing the transfer of liquid refrigerant between a
recovery unit and a refrigeration system, you should guard
against what? - ANSWER Trapping liquid refrigerant
between the service valves.
When pressurizing a system with nitrogen, you should always?
- ANSWER Charge through a pressure regulator.
What are the three "R's"? - ANSWER Recover, Recycle, and
Reclaim.
In relation to the three "R's" what is Recover? - ANSWER
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 Recycle? - ANSWER 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.
Can Recycled refrigerant be resold? - ANSWER It cannot be
re-sold but it can be re-used.
In relation to the three "R's" what is Reclaim? - ANSWER
To process refrigerant to a level equal to new (virgin) product
specifications as determined by chemical analysis.
Can Reclaimed refrigerant be resold? - ANSWER Yes, but
must meet the standard set forth in ARI 700 before it can be
resold.
What chemical has been found in the stratosphere indicating
ozone depletion? - ANSWER Chlorine Monoxide (CLO)
What are 5 Type I appliances? - ANSWER 1.Household
refrigerators
, 2.Household freezers
3.Room air conditioners
4.Water Coolers
5.Drinking fountains
What are 6 Type II appliances? - ANSWER 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
What is an example of a Type III appliance? - ANSWER Low
pressure chiller.
When is "Dew Point" used? - ANSWER When calculating
Superheat.
When is "Bubble Point" used? - ANSWER When calculating
Sub-cooling.
Exam Test Questions With Revised
Correct Answers
BEST UPDATED COMBINED SET!!
What is an Azeotrope? - ANSWER A mixture of two or
more liquids in such a ratio that it's composition cannot be
changed by vaporizing it.
Azeotrope's are numbered what? - ANSWER 500 to 599
What is fractionation? - ANSWER When the refrigerant
leaks, it leaks out in different rates due to the different
pressures.
What is Temperature Glide? - ANSWER When the
temperature of the vaporizing refrigerant changes, even though
the pressure remains the same.
What are the two basic types of recovery devices? - ANSWER
Self-Contained and System-Dependent.
, System-Dependent devices may only be used on appliances
containing how much refrigerant? - ANSWER 15 Lbs of
refrigerant or less
What MUST be placed on a refrigerant cylinder being returned
for reclaiming. - ANSWER A refrigerant label.
After completing the transfer of liquid refrigerant between a
recovery unit and a refrigeration system, you should guard
against what? - ANSWER Trapping liquid refrigerant
between the service valves.
When pressurizing a system with nitrogen, you should always?
- ANSWER Charge through a pressure regulator.
What are the three "R's"? - ANSWER Recover, Recycle, and
Reclaim.
In relation to the three "R's" what is Recover? - ANSWER
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 Recycle? - ANSWER 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.
Can Recycled refrigerant be resold? - ANSWER It cannot be
re-sold but it can be re-used.
In relation to the three "R's" what is Reclaim? - ANSWER
To process refrigerant to a level equal to new (virgin) product
specifications as determined by chemical analysis.
Can Reclaimed refrigerant be resold? - ANSWER Yes, but
must meet the standard set forth in ARI 700 before it can be
resold.
What chemical has been found in the stratosphere indicating
ozone depletion? - ANSWER Chlorine Monoxide (CLO)
What are 5 Type I appliances? - ANSWER 1.Household
refrigerators
, 2.Household freezers
3.Room air conditioners
4.Water Coolers
5.Drinking fountains
What are 6 Type II appliances? - ANSWER 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
What is an example of a Type III appliance? - ANSWER Low
pressure chiller.
When is "Dew Point" used? - ANSWER When calculating
Superheat.
When is "Bubble Point" used? - ANSWER When calculating
Sub-cooling.
