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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...

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 ...

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...

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

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. ...

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 i...

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

November 14, 1994 - ANSWER What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? Memorize it, ya'll. - ANSWER 1987- Montreal Protocol July 1 1992- Violation to vent CFCs or HCFCs Nov 15 1993- Recovery/Recycling equipment must...

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

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. - ANSWER B retrofitted or retired within 12 months. A h...

Reusable refrigerant containers under high-pressure must be hydrostatically tested how often? - ANSWER 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? - ANSWER $44,539 HCFCs contain - ANSWER Hy...

To process refrigerant to a level that is equal to new product specifications as - ANSWER Reclaiming The low side test pressure data plate value should be used by a technician to determine a safe pressure for - ANSWER Leak testing Silicone elastomers are not compatible with what refriger...

To process refrigerant to a level that is equal to new product specifications as - ANSWER Reclaiming The low side test pressure data plate value should be used by a technician to determine a safe pressure for - ANSWER Leak testing Silicone elastomers are not compatible with what refriger...

Industrial process and refrigeration units with a 50 pound charge or more with an annualized leak rate of _____ or more must have leaks repaired. - ANSWER 35 Unless plans are made to replace a system exceeding the maximum leak, repairs must be made in; - ANSWER 30 days Refrigerants CFC...