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%

EPA 608 Type 2 Test Questions With Answers Technicians maintaining, servicing, repairing or disposing of high pressure or very high-pressure appliances, except small appliances and MVAC, must be certified either as a Universal Technician or a ______ ___. - CORRECT ANSWER Type 2 After the installation of any type of system, the unit should be pressurized with _____ and _____ checked. - CORRECT ANSWER nitrogen leak Nitrogen is an ______ gas. - CORRECT ANSWER...

EPA 608 Core Test Sample Questions And Answers All Verified 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 - ANS 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 ultraviolet (UV) rays in the stratosphere layer th...

HVAC: EPA 608 Certification Study Guide Exam Questions And Answers Are there drop-in replacements for R-12 systems? Why or why not? - ANS 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? - ANS Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - ANS Alkylbenzene lubricant What is the difference b/w ternary blend a az...

EPA 608 study material including (Core, type 1, 2 and 3) Exam Questions And Answers a vacuum pump should be connected - as far away from the pump as possible a high capacity vacuum pump and short, large diameter hoses will - dramatically reduce emissions, pressure drop, and evacuation/dehydration time ozone contains three - oxygen atoms one chlorine atom can destroy - 100,000 ozone molecules CFC's do not dissolve in water and do not breakdown into other compounds that dissolve i...

EPA 608 Certification Exam Questions And Answers What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? - ANS November 14, 1994 Section 608 of the Federal Clean Air Act requires technicians to what? - ANS Recover all refrigerants. The objective of the Clean Air Act is to protect what? - ANS The earth's stratosphere. HFC's - ANS HydroFluoroCarbons CFC's - ANS ChloroFluoroCarbons ODP - ANS Ozone Depletion Potential ...

EPA 608 Type 3 Exam Questions And Answers On low pressure chillers, moisture typically enters the refrigerant system through - ANS air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: - ANS 10 psig Leak test and repair the chiller to reduce refrigerant loss from a purge unit on CFC-11 chiller - ANS ... A hydrostatic tube test kit is used to: - ANS determine if a tube leaks Commercial and industrial proce...

UPDATED EPA 608 QUIZLET (2023) EXAM QUESTIONS AND ANSWERS the state of the refrigerant entering the metering device is? - ANS A subcooled high pressure liquid. what type of refrigerant is used in VERY high-pressure appliances? - ANS R-503 what type of refrigerant is used in MEDIUM pressure appliances? - ANS R-500 what type of refrigerant is used in HIGH pressure appliances? - ANS R-410A and R-22 what device is located at the END of the liquid line? - ANS The expansion dev...

EPA 608 Practice exam type 1 Questions And Answers The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. - Restricted to technicians who are EPA certified and refrigerant recovery A small Appliance is defined as a system that is - Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less A __________ recovery device can be use for type 1 small appliance applications or type 2 applications if the total charge is below 15 pounds. ...

EPA 608 (TYPE II) Exam Questions And Answers 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 pump, 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 exc...

EPA Section 608 Technician Certification Study Guide Questions And Answers` What are the typical uses of the center port of a gauge set? - Used during evacuation, charging and recovery procedures. What color are the gauges on a manifold gauge set? - Low pressure is blue, High pressure is red. What are the typical ranges of pressure measurements used on the gauges of a manifold gauge set? - High side is 0 to 500 PSIG; Low side is 0 to 350 PSIG and 0 to 30 in. Hg below atmospheric press...

EPA 608 Universal Exam Questions And Answers Refrigeration technicians who violate the Clean Air Act can: - - ANS 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: - - ANS recovery and recycling. Refrigerant that is recovered can be returned to: - - ANS the same system or other systems owned by the same person without restriction. Refrigerants ca...