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EPA 608 EXAM 2023/2024 GRADED A+ (QUESTIONS AND 100% CORRECT VERIFIED ANSWERS) ANSWERS
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EPA 608 EXAM 2023/2024 GRADED A+ (QUESTIONS AND 100% CORRECT VERIFIED ANSWERS) ANSWERS
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EPA 608 EXAM 2023/2024 GRADED A+(QUESTIONS AND 100% CORRECT
VERIFIED ANSWERS) ANSWERS
• Since when has the sale of HFC and HFO refrigerants been restricted to certified
technicians?
Answer: January 1 2018
• Only technicians certified under what section of the Clean Air Act are allowed to
purchase refrigerants in containers smaller than 20lbs
Answer: 609
• Recovery and/or recycling equipment manufactured after what date must be
certified andlabeled by an EPA approved equipment testing organization?
Answer: November 15 1993
• Never operate the when the system is in a deep vacuum?
Answer: Compressor
• Disposable cylinders are only used with ... and may NEVER be used for ...
Answer: Virgin refrigerant , recovery
,• The EPA requires that refillable refrigerant cylinders must NOT be filled ABOVE
whatpercentage of its capacity by weight
• Answer:
80%
• How often must refillable cylinders be hydrostatically tested and date stamped?
• Answer:
Every 5 years
• What color are approved refrigerant recovery cylinders?
• Answer:
Gray body, yellow top
• What are two types of CFCs?
• Answer:
R-11 and R-12
• What are two types of HCFCs?
• Answer:
R-22 and R-123
• What are two types of HFCs?
• Answer:
R-134a, R-404a, R-407c, R-410a, R-422b
, • What is the ASHRAE classification of R-134a?
• Answer:
A1
• What are two examples of a very high pressure refrigerant?
• Answer:
R-744 and R-170
• Relief valves must NOT be installed in ...
• Answer:
Series
• What type of blend does not have a temperature glide?
• Answer:
Azeotropic
• Temperature glide refers to the ... that a refrigerant blend might experience at a
specificpressure
• Answer:
Range of boiling or condensing temperature points
• What causes refrigerant refraction?
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