EPA 608 Bundle

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

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

Which refrigerants contain the most chlorine? ans CFC. R11,R12,R500. As of what date did it become unlawful to intentionally release Class I and Class II refrigerants to the atmosphere? ans July 1 1992. Which refrigerants have the lowest ozone depletion potential (ODP)? ans ...

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

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 oth...

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

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. Ref...

Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: ans pressurized nitrogen When a new system has been assembled, the first thing to do is: ans pressurize the system with inert gas and leak check EPA regulations require that leaking commercial or i...

When a new system has been assembled, the first thing to do is? ans 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? ans Pressurized with nitrogen then leak checked. The EPA regulations requi...

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

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 fro...

The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. ans Restricted to technicians who are EPA certified and refrigerant recovery A small Pliance is defined as a system that is ans Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 po...

What does ozone in the stratosphere above the earth consist of? ans Molecules containing 3 oxygen atoms Which of the following refrigerants has the lowest global warming potential? ans R-600a Which of the following gases is used as the baseline measurement for global warming potent...

What type of equipment can be worked on with Type III certification? ans low pressure The most efficient method of leak checking a charged low-pressure refrigeration unit is to ans pressurize the system by the use of controlled hot water or heater blankets When pressurizing a syste...