EPA 608 study material including (Core, type 1, 2 and 3) Questions and answers, 100% Accurate.

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EPA 608 study material including (Core, type 1, 2 and 3) Questions and answers, 100% Accurate. a vacum pump should be connected - ✔✔-as far away from the pump as possible a high capacity vac ... uum 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) 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 - ✔✔-... as a general rule, different lubricants should never be mixed - ✔✔-... oxygen and oil when mixed can form an - ✔✔-extremely explosive mixture sight glasses can be cleaned with - ✔✔-alcohol spray before discarding a container the internal cylinder pressure should be reduced to at least - ✔✔-0 psig recovery cylinders must be approved by - ✔✔-Department of Transportation (DOT) Refridgerant cylinders should never be filled above - ✔✔-80% capacity refridgerant cylinders should always be stored - ✔✔-vertical or upright position with their valves at the top Service oses must be fitted with some type of low loss fitting - ✔✔-to prevent the loss of refridgerant for small appliances, this service port typically is a straight piece of tubing that is entered using a - ✔✔- Piercing access valve repair of leaks in small appliances is not required - ✔✔-but should be repaired whenever possible MVAC systems are not classified as a type 1 appliance - ✔✔-... The EPA requires the certification of all technicians who service Type 1 air conditioning and refridgeration to comply with future changes in the law - ✔✔-... any regulated refridgerant released while filling a graduated charging cylinder - ✔✔-must be recovered refridgerants should never be mixed together - ✔✔-... recovery cylinders must be DOT approved for use as a recovery cylinder and should be colored - ✔✔- Gray with a Yellow top Floats, thermistor-type sensors, and weighing scales - ✔✔-full-limit dev [Show More]

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