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Technicians maintaining, servicing, repairing or disposing of low-pressure appliances must be certified as Correct Answer - Type III Technician or a Universal Technician. As of November 14, 1994, the sale of CFC and HCFC refrigerants is restricted to Correct Answer - Certified technicians, NOTE: If EPA regulations change after the technician is certified, it will be the technician's responsibility to comply with any future changes. Because a low-pressure system operates below atmospheric ...

The use and release of CFCs and HCFCs has a far reaching effect on ________. Correct Answer - The Stratosphere Crop loss, eye disease and skin cancer have been attributed to: Correct Answer - Depletion of stratospheric ozone The chlorine in CFCs and HCFCs: Correct Answer - Will not dissolve in water. Which of the following refrigerant has a GWP of "1"? Correct Answer - R-1233zd A refrigerant cylinder designed to hold recovered refrigerant has a: Correct Answer - Grey body and yello...

Techs maintaining, servicing, repairing, or disposing of low pressure appliances must be certified as? Correct Answer - Type III or universal technician As of what date was the sale of CFCs and HCFCs restricted to certified techs? Correct Answer - Nov 14, 1994 Who is responsible to comply with changes in section 608? Correct Answer - The technician Because low pressure systems operate in a vacuum , where will leaks occur? Correct Answer - Gaskets or fittings (allow air or moisture into ...

What does a Type II technician do? Correct Answer - They are certified to work with medium-, high-, and very high-pressure systems that are not small appliances. Name some refrigerants that require Type II certification? Correct Answer - R-22, R-123a, R-227ea, and R-236fa (because they are not low pressure) When are you required by law to fix a leak? Correct Answer - For a system 50lbs and higher that has a "substantial" leak What is a "substantial" leak? Correct Answer - The defini...

AHRI Correct Answer - Air Conditioning, Heating, and Refrigeration Institute. Professional organization that maintains technical standards, certifies products, shares data, and conducts research. AKB Correct Answer - Alkylbenzene. A synthetic refrigeration lubricant that better thermal stability compared to traditional mineral oil. They can be used in systems designed for CFCs and HCFCs. Appliance Correct Answer - Device that contains and uses a refrigerant for household or commercial purp...

What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? Correct Answer - November 14, 1994 1989- Montreal Protocol July 1 1992- Violation to vent CFCs or HCFCs Nov 15 1993- Recovery/Recycling equipment must be certified and labeled by EPA AND Before this date recovery equipment needed to be capable of removing 80% of the refrigerant, w or wo compressor, or 4 in Hg After this date recovery equipment needs to be capable of removing...

Type I Correct Answer - Small appliances- 5lbs or less Type II Correct Answer - Residental Units/ Light Commercial Type III Correct Answer - Industrial Universal Correct Answer - All types November 14th, 1994 Correct Answer - Section 608 of the federal clean air act requires all persons who maintain, service, repair or dispose of appliances that contain regulated refrigerants, be certified in proper refrigerant handling techniques as of Nov 14th, 1994 3 R's Correct Answer - Recov...

Technicians who perform sealed system service on small appliances must have? Correct Answer - Type I or Universal certification A small appliance is defined by EPA as? Correct Answer - Appliances manufactured, charged, and hermetically sealed in a factory with 5lbs or less of refrigerant. Type I certification is required for? Correct Answer - Persons handling refrigerant during maintenance, service, or repair of small appliances If regulations change after the technician becomes certifi...

What does ozone in the stratosphere above the earth consist of? Correct Answer - Molecules containing 3 oxygen atoms Which of the following refrigerants has the lowest global warming potential? Correct Answer - R-600a Which of the following gases is used as the baseline measurement for global warming potential? Correct Answer - Carbon Dioxide Which type of refrigerant typically has the lowest global warming potential? Correct Answer - HFO's What is the state of the refrigerant enter...

Where do leaks commonly occur in low pressure systems? a. Evaporator b. Condenser c. Purge unit d. Gaskets or fittings Correct Answer - d. Gaskets or fittings Where do leaks commonly occur in open-drive type compressor systems? a. Evaporator b. Condenser c. Shaft seal d. Cooling tower Correct Answer - c. Shaft seal Does refrigerant go out of the system in low pressure systems or does air and moisture go in? a. Refrigerant escapes through low pressure leaks. b. Air and moisture e...