EPA SECTION 608 TYPE I (2019 revision)

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What is typically used on small appliances as a service aperture or other device for adding or removing refrigerant? a. A straight piece of tubing that is entered using a piercing access tube. b. A ... line located 15 inches below the compressor. c. A valve installed at the factory which has a ¼ inch diameter and machine threads. d. A service aperture is not present because small appliances are exempt from this requirement. - ANSWER A What type of appliances are technicians certified to service after passing the type 1 examination? a. Appliances containing 5 pounds or less of refrigerant that have been hermetically sealed and charged at the factory. b. Split systems containing 5 pounds or less of refrigerant that have been hermetically sealed and charged at the factory. c. Appliances containing 5 pounds or less of refrigerant that have an open drive compressor and have been charged at the factory. d. Motor vehicle air conditioning equipment. - ANSWER A What type of certification is required for persons recovering CFC's, HCFCs, or HFCs during maintenance, service, or repair of small appliances. a. Type II technician. b. Type III technician. c. Type I technician. d. Technician who has passed the core exam. - ANSWER C EPA Section 608 rules require capture of 80% of the HCFC and HFCs from a small appliance sealed systems with a non-operating compressor if technicians are using; a. a system-dependent (passive) process. b. a self-contained (active) process. c. either a passive or an active recovery process. d. neither recovery process. - ANSWER C Which of the following does NOT meet the criteria for Type 1 appliance certification? a. A MVAC-like system that holds three pounds of R-12. b. a water cooler that holds 13 ounces of R-22 c. a food freezer that holds 22 ounces of R-134a d. A dehumidifier that holds seven ounces of R-410A - ANSWER A What of the following are included in EPA's definition of "small appliance?" a. Products fully manufactured, charged, and hermetically sealed in a factory. b. Products having 15 pounds or less of refrigerant. c. Products with compressors under ½ horsepower. d. Fully charged components ready for installation in a split system. - ANSWER A Which of the following is an approved substitute refrigerant for new household refrigerators, freezers, and combination refrigeration/freezers? a. R-600a b. R-1234yf c. R-1234zd d. R-170 - ANSWER A Which hydrocarbon refrigerant is approved for retrofit into existing household refrigerators? a. HC R-600a 2 ounces or less b. Blended HC R-441A c. HC R-290 1 lb. or less d. Hydrocarbons are not approved for retrofit applications - ANSWER D Recovery devices for use with small appliances containing CFCs, HCFCs, and HFCs must meet which of the following requirements? a. Recovering 90% of the refrigerant when the compressor is operating or achieving a 4-inch vacuum under the conditions of AHRI 740. b. Recovering 80% of the refrigerant when the compressor is operating. c. Recovering 95% of the refrigerant when the compressor is operating or achieving a 10-inch vacuum under the conditions of AHRI 740. d. Recovering 75% of the refrigerant when the compressor is operating. - ANSWER A What is the approximate pressure of a storage cylinder of recovered R-134a that does not contain any non-condensable impurities and is stored in a room where the temperature is 80°F? a. 37 psig b. 87 psig c. 157 psig d. 207 psig - ANSWER B Before beginning a refrigerant recovery procedure, it is ALWAYS necessary to; a. allow the appliance to stabilize at room temperature. b. know the type of refrigerant that is in the system. c. remove the appliance to an outdoor location. d. disconnect the appliance from its power source. - ANSWER B A passive system-dependent recovery process for small appliances; a. still uses a pump to recover refrigerant. b. must use a pressure relief device when recovering refrigerant. c. captures refrigerant in a non-pressurized container. d. can only be performed on a system with an operating compressor. - ANSWER C For which of the following refrigeration systems/appliances would it be permissible to use a passive recovery device for recovery of CFCs, HCFCs, and HFCs? a. A centrifugal air conditioner b. A reciprocating liquid chiller c. A single compressor large commercial walk-in freezer d. A domestic refrigerator - ANSWER D What is the maximum normal charge of HCFC or HFC refrigerant in an appliance that is allowed to use system dependent recovery equipment? a. 5 pounds b. 10 pounds c. 15 pounds d. 50 pounds - ANSWER C What is the maximum allowable factory charge of refrigerant for Type I appliances using CFCs, HCFCs, or HFCs? a. 3 pounds b. 5 pounds c. 10 pounds d. 15 pounds - ANSWER B Equipment which is used to recover CFC, HCFC, and HFC refrigerant from small appliances for the purpose of disposal must meet what standard? a. Recover 95% of the refrigerant whether or not the compressor is operative. b. Recover 80% of the refrigerant with an inoperative compressor and 90% of the refrigerant with an operative compressor. c. Recover 90% of the refrigerant with an inoperative compressor and 80% of the refrigerant with an operative compressor. d. Recover 75% of the refrigerant within 5 minutes. - ANSWER B The sale of CFC, HCFC, HFC, and HFO refrigerants to service or install refrigeration and air-conditioning Equipment is; a. banned from use unless you have a recovery machine. b. limited by law to HVAC contractors and/or Mechanical engineers. c. allowed only if there is proof of need. d. restricted to technicians who are EPA certified in refrigerant recovery. - ANSWER D When servicing a small appliance found to be leaking it is; a. mandatory to repair the leak within 30 days. b. mandatory to repair the leak only when the annualized leak rate exceeds 15% of the total charge. c. not mandatory to repair the leak but it is recommended to do so whenever possible. d. mandatory to recover all remaining refrigerant and dispose of the appliance. - ANSWER C Which of the following best describes low loss fittings on refrigerant recovery devices used to recover CFCs, HCFCs, and HFCs? a. They can be either manually closed or automatically closed when disconnected to prevent loss of refrigerant from hoses. b. They are used to connect the recovery device to an appliance and leak only small amounts of refrigerant during use. c. They are used to connect the recovery device to an appliance and must be discarded after each use. d. They eliminate oil loss during recovery. - ANSWER A Why should a recovery cylinder be allowed to stabilize to room temperature when checking for non condensables inside a recovery cylinder known to contain only one refrigerant. a. To prevent safety valves from purging refrigerant. b. It is a quick method of determining refrigerant level inside the tank. c. Comparisons to a pressure/temperature chart are only valid if both the pressure and temperature of the refrigerant are stable and known. - ANSWER C Which of the following is a true statement regarding a refrigerant that can be used as a direct service 'drop-in' substitute for R-22? a. R-134a used with a TEV b. R-410A used with a TEV that has a MOP of 75psig. c. R-290 with a fixed orifice metering device. d. There is no such thing as a "drop-in" substitute. - ANSWER D Which of the following refrigerants is very high pressure and generally does NOT need to be recovered? a. R-22 b. R-134a c. R-404A d. R-744 - ANSWER D When installing any type of access fitting onto a sealed system; a. the fitting should be leak tested before proceeding with recovery. b. it is not necessary to leak test an access fitting. c. the fitting need not be leak tested until the total repair is completed. d. the system must be pressurized with dry nitrogen before leak testing can be attempted. - ANSWER A When R-410A is recovered from an appliance, it; a. can be mixed with either R-32 or R-125a during the recovery process, since R-410A is a mixture of those two refrigerants. b. can be mixed with R-134a but not R-11 during the recovery process. c. need not be recovered since R-410A is not one of the refrigerants covered by the Clean Air Act. d. should be recovered into a recovery vessel that is clearly marked to ensure that mixing of refrigerants does not occur. - ANSWER D A standard vacuum pump designed specifically for evacuation and dehydration can; a. be used alone as a self-contained (active) recovery device. b. never be used as a recovery device in combination with a pressurized container. c. be used alone as a substitute for any recovery device. d. be used alone as a system-dependent (passive) recovery device. - ANSWER B Which of the following is an acceptable method or device presently used for monitoring the 80% fill level in a recovery tank? a. Superheat when a capillary tube is present or sub-cooling when a thermostatic expansion valve is used. b. Refrigerant scale or tank internal float device. c. Refrigerant temperature measurement. d. Refrigerant pressure measurement. - ANSWER B After installing and opening a piercing access valve, the recovery procedure cannot begin if the system is at what pressure? a. 75 psig b. 50 psig c. 30 psig d. 0 psig - ANSWER D Which condition requires accessing both the high and low side of the system for refrigerant recovery when using the system-dependent (passive) recovery process? a. When there is a leak in the system. b. When the compressor operates normally. c. When the compressor only runs at half speed. d. When the compressor does not run. - ANSWER D Which recovery equipment maintenance practice should be performed on a regular basis? a. Check vacuum pump for any leaks. b. Check recovery device for refrigerant leaks. c. Check amperage draw of recovery device. d. Check amperage draw of vacuum pump. - ANSWER B When a pungent odor is detected during a sealed system recovery and/or repair which of the following is most likely? a. The refrigerant should not be recovered. b. A compressor burnout has occurred. c. It is the characteristic smell of the refrigerant. d. The refrigerant should be vented. - ANSWER B What is the approximate pressure of a storage cylinder of recovered R-410A that does not contain any non-condensable impurities and is stored in a room where the temperature is 80°F? a. 138 psig b. 238 psig b. 338 psig d. 368 psig - ANSWER B Why should solderless piercing valves NOT remain installed on refrigeration systems after completed repairs? a. They are too expensive to remain on every product. b. They tend to leak over time. c. They restrict refrigerant flow. d. They tend to trap lubricant. - ANSWER B What should a technician do if the refrigerant in a recovery cylinder is suspected to be contaminated? a. Turn refrigerant in for reclamation. b. Weigh the cylinder. c. Discard the refrigerant. d. Dilute the refrigerant with virgin refrigerant. - ANSWER A Which of the following is required when attaching a gauge set to check system pressures? a. Release a small amount of refrigerant to check for contamination. b. Have manual or self-sealing valves on the ends of the gauge set hoses to minimize refrigerant releases. c. Recover refrigerant and recharge to specifications even if no repairs are needed. d. Use hoses that are 3 feet or longer. - ANSWER B What must be done to the refrigerant that is vented off the top when filling a charging cylinder? a. The refrigerant need not be recovered. b. The refrigerant must be recovered only if it is a CFC or HCFC. c. The refrigerant must be recovered if it is a CFC, HCFC, or HFC. d. The refrigerant must be reclaimed or incinerated. - ANSWER C The system dependent (passive) recovery process; a. never needs the use of a pump or heat to recover refrigerant. b. must use a pressure relief device to protect the technician and equipment. c. recovers refrigerant in a non-pressurized container. d. can only be performed on a system with an operating compressor. - ANSWER C When recovering CFC, HCFC, or HFC refrigerant into a non-pressurized container from a household refrigerator with an inoperative compressor it is; a. helpful to heat and strike the compressor with a rubber mallet. b. only necessary to recover as much refrigerant as will naturally flow out of the system. c. not necessary to recover since the refrigerant is probably contaminated. d. necessary to chase refrigerant from the oil with pressurized dry nitrogen. - ANSWER A Why should low and high side access valves be installed when recovering from a household refrigerator? a. To improve the speed of recovery. b. To prevent non-condensables contamination. c. To protect the recovery machine. d. To prevent oil migration. - ANSWER D When using a self-contained recovery device on a CFC, HCFC, or HFC system with an operating compressor, technicians must; a. recover the refrigerant to 5 inches of mercury vacuum. b. recover 80% of the nameplate charge c. recover the refrigerant to both 4 inches of mercury vacuum and 80% of the nameplate charge. d. either recover the refrigerant to 4 inches of mercury vacuum or 90% of the nameplate charge. - ANSWER D Any person who opens an appliance containing a CFC, HCFC, of HFC must have at least one self-contained recovery machine available for use unless working on a. small appliances. b. low-pressure appliances c. high pressure appliances d. very high-pressure appliances - ANSWER A What is the approximate pressure of a storage cylinder of recovered R-404A that does not contain any non-condensable impurities and is stored in a room where the temperature is 80°F? a. 68 psig b. 72 psig c. 174 psig d. 288 psig - ANSWER C When is it essential to take measures to help release trapped CFC, HCFC, or HFC refrigerant from the compressor oil during refrigerant recovery? a. When using self-contained recovery devices. b. When using system-dependent active recovery devise. c. When using passive recovery devices on small appliances with non-operating compressors. d. When the refrigerant system has a low side leak. - ANSWER C Which condition can cause excessive pressure on the high side of a self-contained (active) recovery device? a. When the thermal expansion valve is stuck open. b. When the capacity of the recovery tank is larger than the charge size of the system. c. When there is a large volume of non-condensable gas in the refrigerant being recovered. d. When the system is set for no subcooling. - ANSWER C When nitrogen is used to pressurize, check for leaks, or flush a system, the nitrogen; a. must be recovered. b. may be vented to the ambient air. c. should be returned to the cylinder. d. should only be used if mixed with R-22. - ANSWER B Which refrigerants can be mixed in an appliance? a. R-22 and R-407C b. R-12 and R-134a c. R-407C and R-410A d. Refrigerants cannot be mixed. - ANSWER D How many access valves are needed to recover the refrigerant on a sealed system with an operating compressor that has a completely restricted capillary tube? a. Two valves, one on the high and one on the low side of the system. b. Only one access valve, on the low side of the system. c. Only one access valve, on the high side of the system. d. Two valves, one at the inlet to the compressor and one at the outlet of the condenser coil. - ANSWER C What may be done to speed the recovery process and ensure that all CFC, HCFC, or HFC refrigerant has been removed from a frost-free refrigerator? a. Cool the compressor to force liquid out of the high side. b. Heat the recovery cylinder to vaporize liquid refrigerant. c. Turn on the defrost heater to increase the refrigerant's temperature and vaporize any liquid. d. Pack ice around the evaporator to ensure maximum liquid is available. - ANSWER C Why should the technician watch for signs of contamination in the oil when recovering refrigerant from a system that experienced a compressor burnout? a. Contaminants cannot be removed from the refrigerant and the refrigerant will have to be destroyed by the reclamation center. b. The system will have to be flushed if contaminants are present. c. The contaminants will eat away at the recovery equipment. d. The contaminants will plug up the recovery equipment. - ANSWER B A very large refrigerant leak can cause suffocation because refrigerants; a. smell strong and make breathing difficult. b. are lighter than air and cause dizziness. c. are heavier than air and displace oxygen d. sting the nose and cause sneezing. - ANSWER C What can CFC and HCFC refrigerants decompose into at high temperatures (e.g. open flames, glowing metal surfaces, etc...)? a. Boric and Chromic Acids b. Sulfuric and Phosphoric Acids c. Hydrochloric and Hydrofluoric acids d. Phosphoric and Dodecylbenzenesulfonic acids - ANSWER C [Show More]

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