EPA 608 Study guides, Class notes & Summaries

When a new system has been assembled, the first thing to do is? 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? Pressurized with nitrogen then leak checked. The EPA regulations require that any appliances containing more than 50 pounds of refrigerant (except for commercial & industrial process refrigeration) must be repaired when the leak rate exceeds _________ of the charge per year? 15%

the state of the refrigerant entering the metering device is? - A subcooled high pressure liquid. what type of refrigerant is used in VERY high-pressure appliances? - R-503 what type of refrigerant is used in MEDIUM pressure appliances? - R-500 what type of refrigerant is used in HIGH pressure appliances? - R-410A and R-22 what device is located at the END of the liquid line? - The expansion device. what type of refrigerants are the LEAST harmful to the ozone layer? - HFC refrigerants. How...

EPA 608 Refrigeration test Exam with Correct Solutions Type I - Answer -Small appliances- 5lbs or less Type II - Answer -Residental Units/ Light Commercial Type III - Answer -Industrial Universal - Answer -All types November 14th, 1994 - Answer -Section 608 of the federal clean air act requires all persons who maintain, service, repair or dispose of appliances that contain regulated refrigerants, be certified in proper refrigerant handling techniques as of Nov 14th, 1994 3 R's - Answer...

EPA 608 Certification Core Practice Test Q&A 100% Verified 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 layer that extends about 6 to 30 miles above earth. The atom found in CFC and HCFC refrigerants that destroys ozone in the stratosphere is...

EPA 608 Core Test Sample Questions with Verified Solutions 2024 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 the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer...

EPA 608 Core Exam Questions with Verified Solutions 2024 When moisture exists in an operating system, what is most likely to occur? - Answer -Acid will form. What factor(s) affects the speed of evacuation? - Answer -1) The size of the equipment being evacuated. 2)The ambient temperature. 3) The amount of moisture in the system A system is considered dehydrated when? - Answer -The vacuum indicator shows you have reached & held the required finished vacuum. The over-evacuation of a system:...

HVAC: EPA 608 Certification Study Guide with Verified Solutions 2024 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 other oils What type of lubricant is used with HCFCs? - Answer -Alkylbenzene lubricant What is difference b/w ternary blend a azeo...

EPA 608 Study Material Including (Core, Type 1, 2 And 3) with Correct Solutions 2024 Update 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 atom can destroy - Answer -100,000 ozone molecules CFC's do not dissolve in water and do not breakdown into ...

EPA 608 Certification Exam with Verified Solutions 2024 What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? - Answer -November 14, 1994 1989- Montreal Protocol July 1 1992- Violation to vent CFCs or HCFCs Nov 15 1993- Recovery/Recycling equipment must be certified and labeled by EPA AND Before this date recovery equipment needed to be capable of removing 80% of the refrigerant, w or wo compressor, or 4 in Hg After this date recover...

EPA 608 Universal Exam with Verified Solutions 2024 Refrigeration technicians who violate the Clean Air Act can: - - Answer -Lose their EPA certification, be fined, be required to appear in Federal court. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - - Answer -recovery and recycling. Refrigerant that is recovered can be returned to: - - Answer -the same system or other systems owned by the same person without restriction. Refriger...

Refrigeration technicians who violate the Clean Air Act can: - D) all of the above. After 1995, any supplies of CFC refrigerant to service existing units in the USA can only come from: - A) recovery and recycling. Refrigerant that is recovered can be returned to: - A) the same system or other systems owned by the same person without restriction. Refrigerant can not be called "reclaimed" unless it: - B) has been chemically analyzed and the refrigerant meets the ARI-700 purity standard....