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appliance Correct Answer - any device that contains and uses a refrigerant for household or commercial purposes, including any air conditioner, refrigerator, or freezer. EPA interprets this definition to include all air conditioning and refrigeration equipment except units designed and uses exclusively for military purposes. Asphyxia Correct Answer - the displacement of oxygen in a room by the denser refrigerant. High- Pressure appliance Correct Answer - an appliance that uses a refrigeran...

The chlorine in CFCs and HCFCs; Correct Answer - will not dissolve in water What is the Significant New Alternatives policy (SNAP) program Correct Answer - EPA program that identifies refrigerant with lower overall risks to human health and environment To process refrigerant to a level to new ( virgin ) product specifications has determined by chemical analysis defines Correct Answer - Reclaiming Before shipping any use refrigerant cylinders, check that the cylinder meets what standards...

When using recovery or recycling equipment manufactured or imported on or after Nov 15, 1993, the required level of evacuation for low pressure equipment is _____ Hg absolute: 30mm 25mm 15mm 20mm Correct Answer - 25mm The EPA requires that all commercial and industrial process refrigeration systems with more than 50lb of refrigerant be repaired when the annual leak rate exceeds ______: 35% 15% 30% 25% Correct Answer - 35% Open-drive compressors are typically _____ compressors ...

Ozone stratosphere above the earth consists of molecules containing... Correct Answer - 3 oxygen atoms (O3) The oxygen we breathe contains how many atoms in each molecule? Correct Answer - two atoms (O2) The ozone layer consists of ozone in the stratosphere at an altitude of between __________above the earth Correct Answer - 7 and 28 miles the ozone layer is formed by what? Correct Answer - Ultra violet light from the sun acting on oxygen molecules,absorbs and scatter UV light from the ...

What does EPA-608 certification primarily focus on? Correct Answer - Refrigerant handling and safety Which refrigerant is commonly used in household air conditioning systems? Correct Answer - R-22 Which type of refrigerant certification is required for servicing high-pressure systems? Correct Answer - Type II What is the purpose of the EPA regulations regarding refrigerant recovery and recycling? Correct Answer - To reduce greenhouse gas emissions Which type of HVAC system typically ...

The maximum test pressure for leak testing a low-pressure centrifugal chiller is Correct Answer - 10 psig Excessive operation of a purge system means Correct Answer - The system has a leak on the sub-ambient pressure side of the system For a commercial refrigeration system with a charge of 50 pounds or more refrigerant, a substantial (or threshold) week rate will be reduced to ________ after January 1, 2019. Correct Answer - 20% For a comfort cooling system with a charge of 50 pounds or...

A technician with a Type III certification can repair what type of appliances? a) Core + Type II b) Core + Type I + Type II +Type III c) Type I + Type II + Type III d) Core + Type I Correct Answer - b A technician with a Type III certification can repair what type of appliances? a) High pressure appliances such as heat pumps b) Small appliances such as window AC units c) Low pressure appliances such as chillers Correct Answer - c Can you work under someone else's certification? Yes...

Azeotrope Correct Answer - A blend of two or more components who's equilibrium vapor phase and liquid phase compositions Are the same at a given pressure Halocarbon Correct Answer - A halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine and bromine Chlorine, Fluorine, carbon Correct Answer - Chlorofluorocarbons (CFCs) consist of Hydrogen Correct Answer - CFCs are chemically very stable because they contain no Stratospheric Correct Answer - CFCs ar...

What is being done in the U.S. to stop damage to the stratospheric ozone layer? Correct Answer - Eliminating the use of CFCs and HCFCs refrigerants How much can a technician be fined for venting a non-exempt refrigerant from a system? Correct Answer - $44,539 per day per violation State and local governments __________________. Correct Answer - can make laws that are stricter requirements than the federal regulations The ___________ identifies alternative refrigerants for use program. C...

A "compound gauge": Correct Answer - Can only be used for low pressures - Has different unit scales According to EPA regulations, when system flushing is required following a compressor burnout, the following refrigerant must be used: Correct Answer - System flushing with refrigerants is illegal A CFC contains: Correct Answer - Chlorine, fluorine, carbon A CFC - 11 cylinder is: Correct Answer - Orange An HFC-134a cylinder is: Correct Answer - Sky blue or pale blue A chlorine ato...