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EPA 608 Certification Exam 2| Study Questions Correctly Answered!!
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EPA 608 Certification Exam 2| StudyQuestions Correctly Answered!!
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.
What does the EPA require on all Type I equipment that uses Class I or Class II refrigerants. -
ANSWER EPA requires a service aperature (process stub).
TXV - ANSWER Thermostatic Expansion Valve
The EPA considers a major repair to be the replacement of what 4 items? - ANSWER
1.Evaporator
2.Condenser
3.Compressor
4.Auxillary Heat Exchanger
When the refrigerant is put back into a Type III chiller, following recovery and system
repair, where is it added? - ANSWER The charging valve on the evaporator.
What method is used to find suspected water tube leaks in chillers? - ANSWER Hydrostatic
(tube) test
What temperature should be attained when removing oil from a low pressure system to ensure
a lower level of refrigerants in the oil? - ANSWER 130-Degrees F
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