EPA 608 Bundled Exams with Complete Solution | Verified | Guaranteed Success

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 o...

Are there drop-in replacements for R-12 systems? Why or why not? - 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? - Ester based oils and they do not mix with other oils What ty...

What are the typical uses of the center port of 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 mani...

Refrigeration technicians who violate the Clean Air Act can: - - 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: - - recovery and recycling. Refrigerant that is r...

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 ap...

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 - 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 atmosph...

Recovery equipment used for the service or repair of small appliances must be certified by an EPA approved lab if the recovery equipment was made after - November 15, 1993 Recovery devices made before 11-15-93 and are used for recovery of refrigerant from small appliances must be capable of: - re...

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 applia...

On low pressure chillers, moisture typically enters the refrigerant system through - air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: - 10 psig A hydrostatic tube test kit is used to: - determine if a tube leaks Commercial an...

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

Reusable refrigerant containers under high-pressure must be hydrostatically tested how often? - 5 years How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? - $44,539 HCFCs contain - Hydrogen, Chlorine, Fluorine, and ...

The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. - Restricted to technicians who are EPA certified and refrigerant recovery A small Pliance 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 ...

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

If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be; A retrofitted or retired within 3 months. B retrofitted or retired within 12 months. C replaced within 3 months. D replaced within 12 months. - B retrofitted or retired within 12 months. A high-pressur...