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CFC Type 1
EPA 608 Type 1 Flash Cards
| Question | Answer |
|---|---|
| What is the definition of a "Small Appliance" under EPA Type 1 regulations? | Equipment that is fully manufactured, charged, and hermetically sealed in a factory with 5 pounds or less of refrigerant |
| Which refrigerants are commonly used in small appliances? | R-12, R-22, R-134a, R-410A, and increasingly, hydrocarbons like R-600a |
| What must be done before opening or disposing of a small appliance? | Refrigerant must be recovered to specific EPA- mandated vacuum levels. |
| What is the required recovery vacuum for an appliance with a non-operating compressor using HCFC or HFC? | 4 inches of mercury(Hg) vacuum |
| What is the required recovery vacuum for an appliance with an operating compressor using HCFC or HFC? | 4 inches of mercury(Hg) vacuum |
| Can you use a system-dependant (passive) recovery process on a small appliance with a working compressor? | Yes, a system-dependent device can be used when the compressor is functioning properly tp pump refrigerant to the container |
| What is the maximum charge size allowed for using a system-dependent recovery process? | 15 pounds or less |
| If a small appliance is equipped with a serviceable process stub, where should you connect the recovery device? | The copper process stub |
| What should you do if you find a suspected mixture of two different refrigerants in a small appliance? | Do not recover it into a mixed tank, it should be recovered into a separate, designated container to prevent contamination. |
| Is it mandatory to repair leaks in small appliances under EPA Type 1 regulations? | No, repair of leaks is not mandatory for small appliances, but it is highly recommended. |
| which type of refrigerant has the highest ozone depletion potential? | CFCs ( chlorofluorocarbons ) |
| According to the EPA, what is the definition of a small appliance, under type 1 regulations ? | Products manufactured charged, and hermetically sealed in a factory with 5 pounds of refrigerant or less of refrigerant |
| when using a self-contained recovery unit on a system with an operating compressor, what percentage of the refrigerant must be recovered? | 90% |
| what is the specific component in refrigerants that causes stratospheric ozone depletion? | Chlorine |
| A system dependent recovery process for small appliances ? | Captures refrigerant into a non pressurized container |
| Which of the following is an example of an HCFC refrigerant ? | R-22 |
| If a technician smells a strong odor during a recovery process, what is likely the cause ? | A compressor burnout occurred |
| what should be done before using a recovery unit ? | Check the service valve positions and recovery oil level |
| which of the following refrigerant is considered a low GWP refrigerant often found in new small appliances ? | R-600a |
| when monitoring the pressure of a recovery cylinder, at what percentage of it's capacity should the cylinder be considered full ? | 80% |
| What is the flammability classification of R-600a? | A3 |
| Hydrocarbons like R-290 and R-441A are allowed for retrofit in small appliances. True or False? | False |
| What type of recovery method uses a vacuum pump to remove refrigerant? | Active recovery |
| What is the difference between a Type 1 small appliance recovery and a larger system recovery? | Type 1 uses <5 lb charge and may use system-dependent recovery; larger systems require certified recovery machines |
| Why is it unacceptable to mix different refrigerants in a recovery cylinder? | It creates safety hazards, contamination, and disposal problems |
| What is the maximum refrigerant charge for a small appliance under EPA Type 1 certification? | Less than 5 pounds |
| Before recovering refrigerant, a technician must know what about the system? | The type of refrigerant |
| What safety feature must be used on all recovery cylinders? | Pressure relief device |
| What is the difference between a TXV and a fixed orifice? | TXV adjusts flow based on superheat; fixed orifice is constant |
| Why is recovery required before servicing or disposing of a small appliance? | To prevent refrigerant release into the atmosphere |
| What is the purpose of a fixed orifice in a heat pump? | To meter refrigerant and create a pressure drop feeding the evaporator |
| Under EPA regulations, when is it permissible to vent refrigerant from a small appliance? | Venting refrigerant is never permissible, expect for a de minimus release associated with good faith recovery attempts |
| What must a technician have legally perform refrigerant recovery on small appliances? | The technician must hold an EPA Section 608 Type 1 certification ( or Universal certification) |
| What documentation must be maintained when disposing of small appliances containing refrigerant? | Documentation must show that refrigerant was properly recovered, including the name and address of the technician or company performing the recovery |
| What is considered a "non-major repair" for a small appliance? | A repair that does not involve removing the compressor, condenser, evaporator, or auxiliary heat exchange coil |
| What happens if a recovery cylinder exceeds 80% of its liquid capacity? | The cylinder may become over-pressurized, creating a serious safety hazard and risk of rupture |
| Are piercing access valves allowed on small appliances? | Yes, but they must be property installed and removed after service, and the system must be properly sealed |
| What is the EPA requirement regarding the sale of refrigerant to non-certified individuals? | Refrigerant containing ozone-depleting substances may only be sold to EPA- certified technicians |
| What is the purpose of evacuating air from a recovery cylinder before use? | To prevent contamination of recovered refrigerant and avoid introducing non-condensables into the system |
| What is the primary environmental concern associated with HFC refrigerants? | High Global Warming Potential (GWP), contributing to climate change |
| What should a technician do if a recovery unit is not pulling the require vacuum level? | Check for leaks, ensure hoses are tight, verify proper valve positions, inspect recovery machine filters, and confirm the unit is functioning properly before continuing |
| how many ozone molecules can each chlorine atom in the stratosphere destroy | 100,000 molecules |
| An example of a CFC refrigerant is | R-12 |
| which of the following damages stratospheric ozone | HCFC'S |
| what is the strongest evidence that HCFC'S are in the stratosphere | Measurement of chlorine in air samples from the Lower atmosphere |
| which of the following is true | propane cylinders for grilling contain impurities that can damage refrigerant equipment |
| ozone depletion in the stratosphere is what type of problem | Global |
| which type of lubricants are HFO refrigerants miscible in | POE lubricants |
| which refrigerant does not contain chlorine | R-134A |
| What can ester based oils be mixed with | No other oils |
| What range is displayed on a high pressure gauge on a service manifold | 0 to 800 psi |
| why do EPA regulations require appliances to have a service aperture or process stub | to make it easier to recover refrigerant |
| a small appliance need how much refrigerant? | 5lbs or less |
| type 1 certification can be used to service split system ?(t or f) | true |
| domestic refrigerant are considered small appliances under type 1?(t or f) | true |
| hydrocarbon refrigerantr-600 is approved for new house refrigerant? (t or f | true |
| what can happen if large refrigerant leak | suffocation |
| the refrigerant level in a recovery tank must not exceed | 80% |
| Which of the following should never be used for leak detection? | oxygen |
| Which refrigerant is most flammable? | R-600a |
| What is the maximum allowable leakage rate for small appliances? | There is no allowable leakage |
| What is the minimum required level of evacuation for small appliances using low-pressure refrigerants? | 0 inches of Hg |
| What Must be worn when connecting/disconnecting hoses? | Safety eyewear and butyl-gloves |
| To purge a refrigeration system, the nitrogen tank should be equipped with what? | A regulator |
| If a leak occurs in an enclosed area what should you do? | Vacate and naturally ventilate the area |
| During system recovery or repair a pungent odor occurs, what does this indicate? | A compressor burnout |
| What is used to clear debris out of a system? | Nitrogen |
| What should you use when checking a contaminated Refrigerant? | A pressure-temperature chart |
| R-290, R-450, R-600a Refrigerants is for? | Newly manufactured refrigerators |
| are hydrocarbon refrigerants approved for retrofit into household refrigerators? | They are not approved for Retrofit |
| What can't a vacuum pump directly do? | Recover Refrigerant |
| Can split-systems be serviced by type-1 technicians? | No type 1 technicians can't work on split systems. |
Created by:
AHR-160