Electrical Engineering > EXAM > EPA 608 study material including (Core, type 1, 2 and 3) 2022/2023 (All)

EPA 608 study material including (Core, type 1, 2 and 3) 2022/2023

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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 evacu... ation/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) under no circumstance should different refridgerants be mixed together Currently there is NOT a drop-in for CFC-12 ... oils that are hygroscopic Ester based (polyolesters) the alkylbenzene, use for some ternary blends ... [Show More]

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