EPA 608 Exam Bundle

How many types of HVAC certifications are there? - Answer- There are 4 types. What does a metering device do? - Answer- The metering device causes a reduction in pressure, and therefore a reduction in saturation temperature. What is absorbed in the evaporator? - Answer- Heat is absorbed in the...

As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 - Answer- a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in t...

EPA 608 Certification Exam Questions with correct Answers

As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? - Answer- July 1, 1992. What is the ozone layer and why is it important to us on Earth? - Answer- Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere l...

What are the typical uses of the center port of gauge set? - Answer- Used during evacuation, charging and recovery procedures. What color are the gauges on a manifold gauge set? - Answer- Low pressure is blue, High pressure is red. What are the typical ranges of pressure measurements used on t...

Which Refrigerants contain the most chlorine? - Answer- CFC's As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? - Answer- July 1, 1992 Which Refrigerants have the lowest zone depletion potential? - Answer- HFC's The molecul...

Are there drop-in replacements for R-12 systems? Why or why not? - Answer- No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - Answer- Ester based oils and they do not mix with oth...

a vacum pump should be connected - Answer- as far away from the pump as possible a high capacity vacuum pump and short, large diameter hoses will - Answer- dramatically reduce emissions, pressure drop, and evacuation/dehydration time ozone contains three - Answer- oxygen atoms one chlorine ...

What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? - Answer- November 14, 1994 Section 608 of the Federal Clean Air Act requires technicians to what? - Answer- Recover all refrigerants. The objective of the Clean Air Act is to protect what? ...

What is a blend of two or more components who's equilibrium vapor phase & liquid phase compositions are the same at a given pressure? - Answer- Azeotrope This is a halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine, and bromine - Answer- Halocarbon Chloro...

The maximum test pressure for leak testing a low-pressure centrifugal chiller is - Answer- 10 psig Excessive operation of a purge system means - Answer- The system has a leak on the sub-ambient pressure side of the system For a commercial refrigeration system with a charge of 50 pounds or more...

EPA 608 Practice exam type 1 questions and answers 2023

the state of the refrigerant entering the metering device is? - Answer- A subcooled high pressure liquid. what type of refrigerant is used in VERY high-pressure appliances? - Answer- R-503 what type of refrigerant is used in MEDIUM pressure appliances? - Answer- R-500 what type of refrigera...

When a new system has been assembled, the first thing to do is? - Answer- Pressurize the system with an inert gas & leak check. After installation of a field-piped R-410A split heat pulp, the unit should first be? - Answer- Pressurized with nitrogen then leak checked. The EPA regulations requi...