Term
| What is the significance of an azeotropic mixtuer |
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Definition
| The mixture can bind to act like a single component refrigerant |
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Term
| CFC's are most likely to reach the stratosphere than other chlorine-containing component because |
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Definition
| They are chemically very stable |
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Term
| Which components are most damaging to the stratosphere ozone layer and have the highest ozone depletion potential rating |
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Definition
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Term
| Chlorofluorocarbon, or CFC's consist of which of the following chemicals |
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Definition
| Chlorine, fluorinr, canbon |
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Term
| What test methods or assist by the PA as the most effective method for locating the general area of small leaks |
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Definition
| Electronic and Ultrasonic |
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Term
| A reclamation company shipped a cyinder containing mixed refrigerant they may |
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Definition
| Agree to destroy the refrigerant, but typically a substantial fee is charged |
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Term
| One Chlorine atom in the stratosphere is capable of destroying how many ozone molecules |
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Definition
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Term
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Definition
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Term
| HCFC refrigerant cause what damage to the stratosphere or zoned layer comparison to CFC refrigerant |
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Definition
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Term
| The system vacuum gauge should be connected |
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Definition
| As for as possible from the vacuum pump |
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Term
| Manufacturer of CFCs was banned as of December 31 of what year |
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Definition
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Term
| Positive evidence that CFC's are in the stratospheric comes from |
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Definition
| Measurement of CFC's in air samples taken from the stratosphere |
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Term
| Under EPA's regulation, reclaiming refrigerant must meet what standard for purity before it can be resold |
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Definition
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Term
| What recovery devices are so named because they depend on components of the system. that is they capture refrigerant with the assistance of components in the air conditioning or refrigeration equipment they are emptying. |
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Definition
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Term
| All devices use for refrigerant recovery must meet, what standards |
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Definition
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Term
| List one HCFC refrigerant |
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Definition
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Term
| Which of the refrigerant contains no chlorine |
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Definition
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Term
| Which refrigerant is an HFC |
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Definition
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Term
| Ozone in the stratospheric consist of molecules containing how many oxygen atoms |
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Definition
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Term
| What refrigerant cause ozone destruction |
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Definition
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Term
| Recovery devices that can capture liquids and/or vapor refrigerant without the assistance of components in the air condition or refrigerating equipment are known as |
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Definition
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Term
| Technicians are certified to recover refrigerant during the service, or repair of packaged A/C or refrigerant equipment with 5 pounds or less of refrigerant. If they receive a passing grade of what type of examination |
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Definition
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Term
| Technicians are certified to recover refrigerant during the service, or repair of high-pressure equipment if they receive a passing grade on which the examination |
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Definition
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Term
| Technicians are certified to recover refrigerant during the service, or repair of low-pressure equipment if they receive a passing grade on which the examination |
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Definition
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Term
| Which refrigerant leaks at uneven rate due to difference in the vapor pressure |
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Definition
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Term
| Recovery equipment manufactured after November 15, 1993 that is used during the maintenance, service or repair of small appliance must be certified by |
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Definition
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Term
| Recovery devices for use with small appliances must be capable of recovering 80% of the refrigerant whether or not the components or operating or achieving a 4-inch vacuum under conditions of ARI 740 if they are manufactured |
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Definition
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Term
| Fittings that are used to connect the recovery device to an appliance and which can be manually close or which close. automatically when disconnected to prevent loss of refrigerant from hoses are call |
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Definition
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Term
| When checking for non-condensables in a recovery cylinder. The technician should do what before taking a pressure reading |
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Definition
| Allow the temperature of the cylinder to stabilize to room temperature |
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Term
| Refillable cylinders are regulated in their design, fabrication and tested by who for use in the transportation |
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Definition
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Term
| Capturing and ultimately eliminating the use of chlorofluorocarbon is being done in the United State to damage to what |
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Definition
| to the stratospheric ozone layer |
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Term
| States and local government may establish laws that contain regulations that are more what in comparison to the clean air act/EPA regulation |
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Definition
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Term
| The clean air act calls for the phase-out of CFCs/HCFCs production prohibits HCFCs and CFCs from venting as of when |
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Definition
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Term
| You must always recover refrigerant before you dispose of any appliance containing what refrigerant |
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Definition
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Term
| All persons opening appliance for maintenance, service or repair must have at least one piece of certified, self-contained recovering equipment available at their place of business. The only exception is for |
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Definition
|
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Term
| Recovery centers can be identified by |
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Definition
| yellow tops and gray bodies |
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Term
| Reusable refrigerant cylinders must be retested in |
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Definition
|
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Term
| You should always get a accurate pressure reading of the refrigerant in the recovery cylinder before the pressure reading can indicate if there is what and the cylinder |
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Definition
| Excessive air or other non-condensables |
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Term
| Individuals servicing in disposing of her condition and refrigerant equipment are prohibited |
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Definition
| Knowinggly venting refrigerant into the atmosphere |
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Term
| It has been illegal to vent HFC refrigerant since |
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Definition
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Term
| the EPA is authorized to assess fines up to how much per day for violation of any clean air act |
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Definition
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Term
| To clean refrigerant for reuse by oil separation, and single or multiple passes through devices, such as replaceable core filter-dryers, which reduce moisture,acidity and particulate matter |
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Definition
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Term
| To request chemical analysis of the refrigerant to verify that the ARI 700 purity specifications,are met |
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Definition
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Term
| To remove refrigerant any condition from a system, and store it in an external container without necessarily testing are processing. It in any way means what |
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Definition
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Term
| Used disposable refrigerant cylinders can be |
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Definition
| Recycle with other scrap metal. After that are emptied and rendered useless |
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Term
| Which of the following item does DOT regulations 49 CFR require to be recorded on the shipping paper for hazard class 2.2, non-flammable compressed gases |
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Definition
| The number of cylinders for each gas |
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Term
| Portable refillable containers must meet requirements and standards of which agency |
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Definition
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Term
| Approval refillable tands should never be filled to more then what percentage of their total capacity |
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Definition
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Term
| The ozone layer absorbs and scatters light from the sun, which prevents harmful amounts of what from reaching the earth |
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Definition
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Term
| Which refrigerant should not be recovered with current recovery devices |
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Definition
| Refrigerant built before 1950 may have used Methyl formate, Methyl Chloride, or Sulfur dioxide |
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Term
| In high-pressure system, one indicator that there is a leak in the system is |
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Definition
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Term
| Which component of a large open type compressor is most likely to leak. If the unit has not been operated and board, then two months |
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Definition
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Term
| When you have no other choice but to use refrigerant trace gas, which refrigerant should be used for leak detection |
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Definition
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Term
| What is the first thing should be done when a new air-conditioning system has first been assembly and is ready to test |
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Definition
| pressurized the system would nitrogen and perform a leak tests |
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Term
| Which of the following statement is true of recovering and recycling equipment manufactured after November 15, 1993 |
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Definition
A Low superheat must meet strict back your standards, then other met by equipment manufacturers before November 15, 1993
must be equipped with low-loss fittings discuss this
must be tested by EPA approved third-party |
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Term
| The EPA is authorized to pay awards up to______ to any person who punish information that leads to a criminal conviction of other person who violation our the clean air act |
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Definition
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Term
| Hydrochlorofluorocarbon (HCFC) refrigerant containing |
|
Definition
| hydrogen chlorine, fluorine and carbon |
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Term
| Hydrochlorofluorocarbon (HFC) refrigerant contains |
|
Definition
| hydrogen, fluorine and carbon |
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Term
| HFC fluorocarbon refrigerant cause no harm to the stratospheric ozone______ cause no harm to stratosphere |
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Definition
|
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Term
| __________Is a result of damages to the earth ozone layer skin cancer, cataracts, and reduce carbon you |
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Definition
| skin cancer, cataracts, and reduced crop yield |
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Term
| The existence of _______in the upper stratosphere indicates that the ozone, being destroyed |
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Definition
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Term
| Since what date has it been illegal to knowingly release CFC and HCFC refrigerant doing the service maintenance, repair, or disposal of appliances |
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Definition
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Term
| it is illegal knowingly release _________refrigerant during the service, maintenance, repair, or disposal of appliances |
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Definition
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Term
| Which refrigerant or control by the Montréal protocol |
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Definition
| Chlorofluorocarbon, Hydrochlorofluorocarbon,and Halons |
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Term
| The equipment covered by EPA regulations include all air-conditioned and refrigerant equipment containing and using ______ |
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Definition
| All CFC HCFC HFC and all toxic |
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Term
|
Definition
| device can capture liquids and/ or vapor refrigerant without the assistance of components in air condition or refrigerant equipment |
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Term
| Any oil that is said to be hydroscopic has an affinity for |
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Definition
|
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Term
| The oil that will be employed with most of the HFC – 134a refrigerant applications |
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Definition
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Term
| Thus, synthetic lubricant presently use with ternary blends is |
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Definition
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Term
| Which refrigerant has a range of boiling point or condensing points throughout the evaporator and condenser, respectively? The term used to describe this is “temperature glide” or gliding-temperature |
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Definition
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Term
| Which all the following blends is a two part mixture |
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Definition
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Term
| What changes a high-pressure vapor to a high-pressure liquid |
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Definition
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Term
| The component that changes a low-pressure vapor to a high-pressure vapor is |
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Definition
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Term
| What is the cleaning of refrigerant for reuse by all separation and single or multiple passes through moisture absorption device |
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Definition
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Term
| Mixtures of ___ that are used as holding charges or as leak test gauges are not subject to the July 1992 prohibition |
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Definition
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Term
| When a household refrigerator compressor does not run it is recommended that low and high side access valves be installed when recovering refrigerant from the system because: |
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Definition
| it may be necessary to achieve required recovery efficiency |
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Term
| On a sealed system with an operating compressor that has a completely restricted capillary tube how many access valves are needed to evacuate the refrigerant? |
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Definition
| Two valves one on the high and one on the low side of the system. |
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Term
| The system dependent (passive) recovery process |
|
Definition
| can only be performed on a system with an operating compressor |
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|
Term
| A standard vacuum pump designed specifically for evacuation and dehydration can: |
|
Definition
| be used alone as a self-contained (active) recovery device. |
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Term
| Using the system-dependent (passive) recovery process which condition requires the accessing both the high and low side of the system for refrigerant recovery? |
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Definition
| when the compressor operates normally |
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Term
| Which refrigerants can be mixed? |
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Definition
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