Core section vocabulary and regulations required of every EPA Section 608 technician regardless of specialty type.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- What does EPA Section 608 require?
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Certification for technicians who maintain, service, repair, or dispose of air-conditioning and refrigeration equipment containing more than 5 pounds of refrigerant.- What is Global Warming Potential (GWP)?
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A measure of how much a refrigerant contributes to global warming relative to carbon dioxide over a 100-year period.- What is Ozone Depletion Potential (ODP)?
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A measure of a refrigerant's ability to destroy stratospheric ozone, with CFC-12 set as the reference at 1.0.- Define 'major repair' under EPA Section 608.
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A repair involving more than 25 percent of the refrigerant charge or replacement of a compressor, condenser, or evaporator coil.- What is the required evacuation level for a system with no air or moisture contamination?
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500 microns (0.5 millitorr) of absolute pressure.- What vacuum level is required for systems with air or moisture contamination?
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10 microns (0.01 millitorr) of absolute pressure.- What is the zero-leak standard for EPA 608?
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No detectable leaks as determined by an EPA-approved leak detection method.- Name three EPA-approved leak detection methods.
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Electronic detector, dye and ultraviolet light, soap and water, nitrogen pressure testing, or mass balance calculation.- When must a technician conduct a leak inspection under EPA 608?
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Within 30 days of startup for newly installed systems or after every major repair.- What is saturation temperature?
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The temperature at which a refrigerant boils or condenses at a given pressure, read directly from pressure-temperature charts.- What is superheat?
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The temperature rise of a refrigerant vapor above its saturation temperature at a given pressure.- What is subcooling?
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The temperature drop of a refrigerant liquid below its saturation temperature at a given pressure.- What is floodback in a refrigeration system?
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The return of liquid refrigerant to the compressor, which can cause compressor slugging and mechanical damage.- What is the purpose of an accumulator?
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To prevent floodback by storing excess liquid refrigerant and ensuring only vapor enters the compressor during operation.- What is a thermostatic expansion valve (TXV)?
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A metering device that automatically regulates refrigerant flow into the evaporator based on superheat.
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