EPA608 Certification bundled exams 2023 100% correct answers

a vacum 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 destro...

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 ...

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

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 ...

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 at...

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 t...

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. ...

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, Fluorin...

When moisture exists in an operating system, what is most likely to occur? Acid will form. What factor(s) affects the speed of evacuation? 1) The size of the equipment being evacuated. 2)The ambient temperature. 3) The amount of moisture in the system A system is considered deh...

Ozone stratosphere above the earth consists of molecules containing... 3 oxygen atoms (O3) The oxygen we breathe contains how many atoms in each molecule? two atoms (O2) The ozone layer consists of ozone in the stratosphere at an altitude of between __________above the earth 7 and 2...

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 Leak test and repair the chiller to reduce refrigerant loss from a pruge ...

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 ...

Technicians who perform sealed system service on small appliances must have; Type I or universal certification A small appliance is defined by EPA as; Appliances manufactured, charged, and hermetically sealed in a factory with 5 lbs or less of refrigerant Type I Certification is requ...

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 an...