EPA 608 study guide latest Updates

EPA 608 study guide latest Updates 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 destroy - 100,000 ozone molecules CFC's do not dissolve in water and do not breakdown into other compounds that dissolve in water - CFC's cannot be washed out of the lower atmosphere ODP - ozone depletion potential azeotrope - where the mixture behaves like a single chemical (new refrigerant) HFC's will not damage the ozone in the stratosphere - ... in 1992 the united states ordered the stoppage of all CFC production and importation after - December 31, 1995 according to the clean air act, no person installing, maintaining, repairing, or disposing of any appliance may knowingly vent or otherwise release into the environment and class 1 or class 2 substance after - July 1, 1992 class 1 - CFC class 2 - HCFC it became illegal to vent substitutes for CFC and HCFC refridgerants on - November 15, 1995 any device which contains and uses a class 1 or class 2 substance as a refridgerant and is used for household or commercial purpose. - appliance self contained recovery equipment type - Active system dependent recovery equipment type - Passive only section 609 certified technicians may buy CFC-12 in containers smaller than 20 pounds - ... who must ensure that all refridgerant has been recovered prior to disposal of any appliance - The final person in the disposal chain (scrap metal recycler, landfill owner, ect.) the removal of refridgerant in any condition - Recovery to clean refridgerant by oil seperation, non-condensable removal and single or multiple passes through replaceable filter-driers to reduce moisture, acidity and particulate matter - Recycling a complicated distillation process that returns recovered refridgerant to the purity of factory fresh refridgerant. - Reclaiming (ARI Standard 700)