Rules and procedures for servicing high-pressure refrigeration appliances such as residential central air systems, tested on the Type II certification.
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- What pressure threshold distinguishes high-pressure from low-pressure appliances?
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150 psig at operating conditions- What are two common high-pressure refrigerants in residential air conditioning?
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R-22 and R-410A- What regulation established EPA 608 certification requirements?
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Section 608 of the Clean Air Act- When did EPA require certification for all refrigerant handlers?
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November 14, 1994- What must a technician possess before purchasing refrigerant?
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A valid EPA 608 certification- Is intentionally venting high-pressure refrigerant to the atmosphere legal?
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No, it violates Section 608- What must be recovered from an appliance before disposal?
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All refrigerant charge- How long must recovery and recycling records be kept?
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Three years minimum- What is the EPA recovery efficiency standard?
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90 percent of the refrigerant charge- What does HCFC stand for?
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Hydrochlorofluorocarbon- Compare ozone depletion: CFCs versus HCFCs
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CFCs have higher ozone depletion potential than HCFCs- What color is the cylinder for R-22 refrigerant?
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Green- What color is the cylinder for R-410A refrigerant?
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Rose or pink- What is the primary purpose of manifold gauges?
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Measure system pressure and temperature, and recover or evacuate refrigerant- What vacuum pressure must be achieved when evacuating a high-pressure system?
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500 microns of mercury absolute or lower
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