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CFC Type 1
EPA 608 Type 1 Flash Cards
| Question | Answer |
|---|---|
| What can type 1 techs not service? | split systems |
| self-contained recovery devices for small appliances must be able to recover how much refrigerant when the compressor is operating? (percentage) | 90% |
| passive recovery for an appliance containing HCFC or HFC is limited to a max charge of? (Pounds) | 15 pounds |
| can recovery devices be manually or automatically closed or both? | both |
| the refrigerant that is vented off the top when charging a cylinder should be? | recovered |
| what refrigerant is approved for new household refrigerators, freezers? | r-600a |
| is it mandatory to repair a leak on a small appliance? | no |
| when passively recovering refrigerant from an appliance and the compressor doesn't run both the ____ and the ____ side must be accessed for recovery | high, low |
| household appliances charged with hydrocarbons must have what on piping, evaporator and exterior? | safety markings |
| At high temperatures CFC and HCFC can decompose into what gas | phosgene gas |
| What system does not meet the criteria for type 1 technicians? | MVAC |
| True or false, are refrigerants heavier than air? | True |
| True or False, Can a type 1 on technician work on water coolers, window units, and freezers? | True |
| Recovery equipment used during the maintenance service or repair of small appliances that use CFC HCFC and HFC must be approved by_____. | EPA Approved Laboratory |
| What is the max refrigerant a technician with a type one certification can work with? | 5lbs |
| When working with refrigerants, what safe practices should be worn? | Safety eyewear and butly-lined gloves |
| What should a technician do if suspected of refrigerant to be contaminated? | Pressure measurement should be taken and compared to a pressure temperature chart |
| What are the two acceptable device methods for monitoring that the fill level of a recovery tank does not exceed 80%? | Refrigerant scale and tank internal float device |
| What is the most recommended you can fill a recovery tank? | 80% |
| Can HCFC and HFC such as R-404A be used for new Type 1 appliances? | NO |
| Under EPA regulations, what is the definition of a “small appliance”? | Products manufactured, charged, and hermetically sealed in a factory 5 pounds or less of refrigerant. |
| When using a self-contained recovery device on an appliance with an operating compressor, what percentage of refrigerant must be recovered? | 90%. |
| When using a self-contained recovery device on an appliance with a non operating compressor, what percentage of refrigerant must be recovered? | 80%. |
| System dependent recovery on a non operating compressor. Which side of the system should you access? | Both high and low sides of the system. |
| To ensure maximum recovery what hydrocarbon refrigerant is approved for a new household refrigerators and freezers | R-600a Isobutane. |
| What is required of all small appliances for use when adding or removing refrigerant aperture or process stub, | aperture or process stub, Usually.1/4 inch pipe. |
| To avoid overfilling and potential hydrostatic explosion, what is the maximum percentage a recovery cylinder should be filled by volume? | 80%. |
| What is a major drawback? Danger of leaving a solderless piercing valve on a system permanently? | They tend to leak over time. They should only be used for recovery and then removed or replaced. |
| High temperatures CFC and HCFC refrigerants can decompose into what toxic gas? | Phosgene gas |
| It is mandatory under EPA law to repair a leak in a small appliance. | no, but it is highly recommended in professional practice. |
| What type of certification is required for persons recovering CFC's, HCFCs, or HFCs during maintenance, service, or repair of small appliances. | Type I technician. |
| which very high pressure refrigerant does not need to be recovered? | R-744 carbon dioxide |
| what is an example of an appliance that is allowed to use a passive recovery device ? | domestic refrigerator |
| what system doesn't meet the criteria for type I certification? | MVAC |
| Refrigerant that is vented off the top must be_____? | recovered |
| where must household appliances charged with HC have permanent saftey markings? | near evaporator, exposed refrigerant tubing, machine compartment, and exterior of refrigerator |
| what must a tech do if they suspect the refrigerant in recovery cylinder is contaminated? | take a pressure measurement and compare to a PT chart |
| a tech must let the temperature of a cylinder to stabilize to room temperature? | true |
| non-condensable gas in a refrigerant can be checked how? | with a PT chart |
| what safe practices should be used when recovering refrigerant? | wear saftey glasses and butyl lined gloves |
| when retrofitting or converting a system to a different refrigerant what should be used? | only EPA approved substitutes |
| what are safe work practices when recovering refrigerant? | wearing safety eye wear and lined gloves |
| What is ambient temperature ? | Ambient temp is the temperature of the air surrounding an object. |
| T or F scientific calculations, absolute temperature scales must be used. | True |
| A refrigerant scale or tank internal float device are acceptable method for monitoring that the fill level in a recovery tank does not exceed? | 80% |
| When filling a charging cylinder with a regulated refrigerant, The refrigerant that is vented off the top must be ? | Recovered |
| A vacuum pump made for system dehydration may be used to? | Evacuate a recovery cylinder |
| CFC and hcfc refrigerants can decompose into what type of gas ? | Phosgene gas |
| When retrofitting or converting a system to use a different refrigerant ,what can be used ? | only EPA- approved substitutes |
| Household appliances charged with hydrocarbon refrigerants? | Permanent safety markings on or near any evaporators. |
| How many scales are thermometers graduated in ? | 4 different scales. |
| After making a major repair, how many microns should the appliance be dehydrated by? | 500 |
| What chart provides the pressure-temperature relationship of refrigerants? | A pressure-temperature chart |
| What is the "heart" of the refrigeration cycle? | The compressor |
| What appliances can Type I technicians service? | Water coolers, window units, refrigerators, freezers, de-humidifiers, residential ice machines, and package terminal air conditioning |
| What is in HFCs? | Hydrogen, Fluorine, and Carbon |
| What is in HCFCs? | Carbon, Hydrogen, Chlorine, and Fluorine |
| What is in CFCs? | Carbon, Chlorine, and Fluorine |
| What was created to provide comparisons of the global warming impacts of different gases? | Global Warming Potential |
| How is ASHRAE ranked? | Class A (safest) to Class B |
| When retrofitting or converting a system to use different refrigerant, only _______________ can be used. | EPA-approved substitutes. |
Created by:
AHR-160