What can CFC and HCFC refrigerants decompose into at high temperatures (e.g. The same method must be used for all appliances subject to the leak repair requirements located at an operating facility. Self-contained recovery equipment means refrigerant recovery and/or recycling equipment that is capable of removing the refrigerant from an appliance without the assistance of components contained in the appliance. Determine the mass flow rate and the inlet area. Divide the result of Step 1 by the pounds of refrigerant the appliance normally contains at full charge; and. manifold does gauge r410a hose tool pressure r134a ac diagnosis charging hvac recovery r22 professional r404a 5ft alloy aluminum block A: 141B B: R-22 C: 141A/141B BLEND D: 134A, WHEN USED SOLDER LESS TYPE PIERCING VALVES THEY SHOULD NOT REMAIN INSTALLED ON SYSTEMS AFTER COMPLETION OF REPAIRS BECAUSE: A: THEY ARE TOO EXPENSIVE TO REMAIN ON EVERY PRODUCT B: THEY TEND TO LEAK OVER TIME C: THEY BECOME LOOSE AND VIBRATE D: BOTH A AND C, IT IS GENERALLY RECOMMENDED THAT PIERCING VALVES BE USED ON WHICH OF THE FOLLOWING TUBING MATERIALS? manifold r22 gauge r134a refrigeration hvac kit ac r12 refrigerant Technician also means any person who in the course of disposal of an appliance (except small appliances, MVACs, and MVAC-like appliances) could be reasonably expected to violate the integrity of the refrigerant circuit and therefore release refrigerants from the appliances into the environment. Normal operating characteristics and conditions are marked by the absence of atypical conditions affecting the operation of the appliance. THE EXCEPTION TO THIS RULE IS: A: SMALL APPLIANCES B: LOW PRESSURE APPLIANCES C: HIGH PRESSURE APPLIANCES D: VERY HIGH PRESSURE APPLIANCES, WHAT IS THE MAXIMUM ALLOWABLE FACTORY CHARGE OF REFRIGERANT FOR A TYPE 1 APPLIANCE: A: 3 POUNDS B: 5 POUNDS C: 10 POUNDS D: 15 POUNDS, WHEN CHECKING FOR NON-CENDENSABLES INSIDE A RECOVERY CYLINDER, WHY SHOULD THE TECH ALLOW THE TEMPERATURE OF THE CYLINDER TO STABILIZE TO ROOM TEMPERATURE BEFORE TAKING A PRESSURE READING? C: ONLY ONE ON THE HIGH SIDE D: ALL OF HE ABOVE, TO SPEED THE RECOVERY PROCESS AND ENSURE THAT ALL REFRIGERANT HAS BEEN REMOVED FROM A FROST FREE REFRIGERATOR: A: COOL THE COMPRESSOR TO FORCE LIQUID OUT THE COMPRESSOR B: HEAT THE RECOVERY CYLINDER TO VAPORIZE THE REFRIGERANT C: TURN ON THE DEFROST HEATER TO VAPORIZE ANY TRAPPED LIQUID D: PACK ICE AROUND THE EVAPORATOR TO ENSURE MAXIMUM LIQUID IS AVAILABLE. When installing any type of access fitting onto a sealed system; the fitting should be leak tested before proceeding with recovery. Examples include but are not limited to appliances using R-13, R-23, R-503, R-508A, and R-508B. Leak rate means the rate at which an appliance is losing refrigerant, measured between refrigerant charges. FOR SMALL APPLIANCES, THIS SERVICE PORT USUALLY IS: A: A STRAIGHT PIECE OF TUBBING THAT IS ENTERED USING A PIERCING VALVET, TECHS RECEIVING A PASSING GRADE ON THIS SMALL APPLIANCE EXAM ARE CERTIFIED TO RECOVER REFRIGERANT DURING THE MAINTENANCE, SERVICE OR REPAIR OF: A: PACKAGED TERMINAL AC'S (PTAC) WITH 5 LBS OR LESS OF REFRIGERANT. WHEN FILLING A CHARGING CYLINDER, THE REFRIGERANT THAT IS VENTED OFF THE TOP OF THE CYLINDER: A: NEED NOT BE RECOVERED B: NEED ONLY BE RECOVERED IF FILLING WITH A REGULATED REFRIGERANT C: MUST BE RECOVERED REGARDLESS OF THE REFRIGERANT D; NON OF THE ABOVE, WHEN RECOVERING REFRIGERANT FROM A SYSTEM THAT EXPERIENCED A COMPRESSOR BURNOUT, THE TECH SHOULD WATCH FOR SIGNS OF CONTAMINATION IN THE OIL BECAUSE: A: CONTAMINANTS CONNOT BE REMOVED FROM THE REFRIGERANT AND THE REFRIGERANT WILL HAVE TO BE DESTROYED BY THE RECLAMATION CENTER. recovery refrigerant machine ac picks machines robinair 60hz 115v A very large refrigerant leak can cause suffocation because refrigerants; are heavier than air and displace oxygen. Substitute means any chemical or product, whether existing or new, that is used as a refrigerant to replace a class I or II ozone-depleting substance. C: THE CONTAMINANTS WILL EAT AWAY AT THE RECOVERY EQUIPMENT. A steady-flow compressor is used to compress helium from 15 psia anc 70$^\circ{}$F at the inlet to 200 psia and 600$^\circ{}$F at the outlet. exchanger immersion smartclima charging yel hose vacuum loss low (1) Annualizing Method. The sale of CFC, HCFC, HFC, and HFO refrigerants to service or install refrigeration and air conditioning equipment is; restricted to technicians who are EPA certified in refrigerant recovery, When servicing a small appliance found to be leaking it is, not mandatory to repair the leak but it is recommended to do so whenever possible. recovery refrigerant machine ac picks machines robinair 60hz 115v For a system with multiple circuits, each independent circuit is considered a separate appliance. System-dependent recovery equipment means refrigerant recovery equipment that requires the assistance of components contained in an appliance to remove the refrigerant from the appliance. r410 Methods that determine whether the appliance is leaking refrigerant but not the location of a leak, such as standing pressure/vacuum decay tests, sight glass checks, viewing receiver levels, pressure checks, and charging charts, must be used in conjunction with methods that can determine the location of a leak. Retrofit means to convert an appliance from one refrigerant to another refrigerant. 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: A: IT CAN ENHANCE THE SPEED OF RECOVERY B: IT MAY BE REQUIRED TO ACHIEVE REQUIRED RECOVERY EFFICIENCY. Wear safety eyewear and butyl-lined gloves when connecting/disconnecting hoses. refrigerant tool recovery imperial tubing od grainger use gideon removal pt close zoom tap

As used in this subpart, the term exempt substitutes refers to certain substitutes when used in certain end-uses that are specified in 82.154(a)(1) as exempt from the venting prohibition and the requirements of this subpart, and the term non-exempt substitutes refers to all other substitutes and end-uses not so specified in 82.154(a)(1). D: WHEN SYSTEM HAS A LOW SIDE LEAK. Appliance means any device which contains and uses a class I or class II substance or substitute as a refrigerant and which is used for household or commercial purposes, including any air conditioner, motor vehicle air conditioner, refrigerator, chiller, or freezer. Technicians could include but are not limited to installers, contractor employees, in-house service personnel, and owners and/or operators of appliances. Recover means to remove refrigerant in any condition from an appliance and to store it in an external container without necessarily testing or processing it in any way. Low-pressure appliance means an appliance that uses a refrigerant with a liquid phase saturation pressure below 45 psia at 104 F. (iii) Step 3. Take the number calculated in Step 1 and divide it by the number calculated in Step 2; and. Motor vehicle air conditioner (MVAC) means any appliance that is a motor vehicle air conditioner as defined in 40 CFR part 82, subpart B. MVAC-like appliance means a mechanical vapor compression, open-drive compressor appliance with a full charge of 20 pounds or less of refrigerant used to cool the driver's or passenger's compartment of off-road vehicles or equipment. B: MUST USE A PRESSURE RELIEF DEVICE WHEN RECOVERING REFRIGERANT. Which of the following is an approved substitute refrigerant for new household refrigerators, freezers, and combination refrigeration/freezers? C: VACATE AND VENTILATE THE SPILL AREA D: ALL OF THE ABOVE, REFRIGERANTS IN LARGE QUANTITIES CAN CAUSE SUFFOCATION BECAUSE: A: THEY SMELL STRONG AND MAKE IT HARD TO BREATH B: THEY ARE LIGHTER THAN AIR AND CAUSE DIZZINESS C: THEY ARE HEAVIER THAN AIR AND DISPLACE OXYGEN. D: RESTRICTED TO TECHS WHO ARE EPA CERTIFIED IN REFRIGERANT RECOVERY. (5) The recycling of any appliance for scrap. C: RESPIRATORY EQUIPMENT IS NOT REQUIRED D: DUST MASKS ARE SUFFICIENT, AT HIGH TEMPERATURES R-12 AND R-22 CAN DECOMPOSE TO FORM: A: BORIC AND CHROMIC ACIDS B: SULPHURIC AND PHOSPHORIC ACIDS C: HYDROCHLORIC AND HYDROFLUORIC ACIDS D: NONE OF THE ABOVE, AT HIGH TEMPERATURES R-12 AND R-22 CAN DECOMPOSE TO FORM: A: HYDRAZINE GAS B: PHOSGENE GAS C: HELIUM GAS D: NONE OF THE ABOVE, WHEN USING RECOVERY CYLINDERS AND EQUIPMENT WITH SCHRADER VALVES, IT IS CRITICAL TO: A: INSPECT THE SHRADER VALVE CORE FOR BENDS AND BREAKAGE B: REPLACE THE DAMAGED VALVE CORE TO PREVENT LEAKAGE C: CAP THE SCHRADER PORTS TO PREVENT ACCIDENTAL DEPRESSION OF THE VALVE CORE D: ALL OF THE ABOVE, THE "DOT" REGULATIONS, 49 CFR, REQUIRE WHICH PARAMETER TO BE RECORDED ON THE SHIPPING PAPER FOR HAZARD CLASS 2.2, NON FLAMMABLE COMPRESSED GASES? B: MUST USE A PRESSURE RELEASE DEVICE TO PROTECT THE TECH AND THE EQUIPMENT. System receiver means the isolated portion of the appliance, or a specific vessel within the appliance, that is used to hold the refrigerant charge during the servicing or repair of that appliance. Refrigerant means, for purposes of this subpart, any substance, including blends and mixtures, consisting in part or whole of a class I or class II ozone-depleting substance or substitute that is used for heat transfer purposes and provides a cooling effect. rothenberger refrigerant rorec refrigeration skroutz 110v recup recyclage terazi dijital iosifidis centrale C: BE USED ALONE AS A SUBSTITUTE FOR ANY RECOVERY DEVICE. C: RECOVER REFRIGERANT AND RECHARGE, EVEN IF NO REPAIRS ARE NEEDED. A: DEPARTMENT OF TRANSPORTATION B: COMMUNITY RIGHT TO KNOW ACT C: UNDERWRITERS LABORATORIES D: ALL OF THE ABOVE. Process stub means a length of tubing that provides access to the refrigerant inside a small appliance or room air conditioner and that can be resealed at the conclusion of repair or service.

A: CAPABLE OF RECOVERING 80% OF THE REFRIDGERANT WHETHER OR NOT THE COMPRESSOR IS OPERATING OR A 4" VACUUM UNDER CONDITIONS OF ARI 740-1993. pump pressure heat air refrigerant adding testing vacuum sanyo install source diy test ecorenovator system ALL APPLIANCES MUST BE EQUIPPED WITH A SERVICE APERTURE OR OTHER DEVICE WHICH IS USED WHEN ADDING OR REMOVING REFRIGERANT FROM THE APPLIANCE. Where one appliance is used for both industrial process refrigeration and other applications, it will be considered industrial process refrigeration equipment if 50 percent or more of its operating capacity is used for industrial process refrigeration. Long cylindrical steel rods ($\rho$ = 7833 kg/m^3 and $c_{p}$ = 0.465 kJ/kgK) of 10-cm diameter are heat treated by drawing them at a velocity of 3 m/min through a 7-m-long oven maintained at 900$^\circ{}$C. refrigerant Commercial refrigeration means the refrigeration appliances used in the retail food and cold storage warehouse sectors. Comfort cooling appliances include but are not limited to chillers, commercial split systems, and packaged roof-top units. of R-12 C: a food freezer that holds 22oz. D: MUST BE RECOVERED INTO ITS OWN RECOVERY VESSEL AND CLEARLY MARKED. PERSONS RECOVERING REFRIGERANT DUING MAINTENANCE SERVICE OR REPAIR OF SMALL APPLIANCES MUST BE CERTIFIED AS: IF EPA REGULATIONS CHANGE AFTER A TECH HAS BECOME CERTIFIED: EPA rules require capture of 80% of the refrigerant from a small appliance sealed system with a non operating compressed if techs are using: a: a system dependent (passive) process b: a self contained (active) process c: either process d: neither process, Which of the following is not a type 1 appliance? Recovery devices for use with small appliances containing CFCs, HCFCs, and HFCs must meet which of the following requirements? open flames, glowing metal surfaces, etc.)? The system dependent (passive) recovery process. (4) Use of an established range based on the best available data regarding the normal operating characteristics and conditions for the appliance, where the midpoint of the range will serve as the full charge. (i) Step 1. faqs A STORAGE CYLINDER OF RECOVERED R-12 AT NORMAL ROOM TEMPERATURE (75*F), IN THE ABSENCE OF NON-CONDENSABLES WILL BE PRESSURIZED TO: A: 30 PSIG B: 75 PSIG C: 150 PSIG D: 200 PSIG, A STORAGE CYLINDER OF RECOVERED R-22 AT NORMAL ROOM TEMPERATURE (75*F), IN THE ABSENCE OF NON-CONDENSABLES WILL BE PRESSURIZED TO: A: 250 PSIG B: 200 PSIG C: 175 PSIG D: 130 PSIG, A STORAGE CYLINDER OF RECOVERED R-500 AT NORMAL ROOM TEMPERATURE (75*F), IN THE ABSENCE OF NON-CONDENSABLES WILL BE PRESSURIZED TO: A: 30 PSIG B: 75 PSIG C: 95 PSIG D: 120 PSIG, WHICH CONDITIONS CAN CAUSE EXCESSIVE PRESSURE CONDITIONS ON THE HIGH SIDE OF A SELF-CONTAINED (ACTIVE) RECOVERY DEVICE? If the rods enter the oven at 30$^\circ{}$C and leave at 700$^\circ{}$C, determine (a) the rate of heat transfer to the rods in the oven and (b) the rate of entropy generation associated with this heat transfer process. C: COMPARISONS TO A P-T CHART ARE ONLY VALID IF BOTH THE PRESSURES AND TEMP OF REFRIGERANT ARE STABLE AND KNOWN D: A TEMP READING ALONE IS ENOUGH TO DETERMINE QUALITY, WHICH OF THE FOLLOWING IS A REASON TO OBTAIN AN ACCURATE PRESSURE READING OF REFRIGERANT INSIDE A RECOVERY CYLINDER: A: PRESSURE READING CAN INDICATE IF THERE IS EXCESSIVE AIR OR OTHER NON-CONDENSABLES IN THE CYLINDER B: THE PRESSURE READING CAN INDICATE THE REMAINING CAPACITY C: PRESSURE READING CAN INDICATE IF REFRIGERANT HAS BEEN DAMAGED D: BOTH A AND C, BEFORE BEGINNING A 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: MOVE THE APPLIANCE TO AN OUTDOOR LOCATION D: DISCONNECT THE APPLIANCE FROM ITS POWER SOURCE, BEFORE SHIPPING ANY USED REFRIGERANT IN A CYLINDER IT IS NECESSARY TO: A: PROPERLY LABEL THE CONTAINER B: PROPERLY COMPLETE SHIPPING PAPERWORK C: CHECK THAT THE CONTAINER MEETS "DOT" STANDARDS D: ALL OF THE ABOVE, A REFRIGERANT THAT CAN BE USED AS A DROP IN FOR R-12 IN A SMALL APPLIANCE IS: A: R-134A B: R-22 C: R-141B D: NONE OF THE ABOVE. SMALL APPLIANCE RECOVERY EQUIPMENT MANUFACTURED AFTER NOVEMBER 15, 1993 MUST BE CERTIFIED TO BE CAPABLE OF: A: RECOVERING 90% OF THE REFRIGERANT WHEN COMPRESSOR IS OPERATING OR ACHIEVING A 4" VACUUM UNDER ARI CONDITIONS. This method is summarized in the following formula: Low-loss fitting means any device that is intended to establish a connection between hoses, appliances, or recovery and/or recycling machines and that is designed to close automatically or to be closed manually when disconnected, minimizing the release of refrigerant from hoses, appliances, and recovery and/or recycling machines. C: CAPTURES REFRIGERANT IN A NON-PRESSURIZED CONTAINER D: CAN ONLY BE PERFORMED ON A SYSTEM WITH AN OPERATING COMPRESSOR, WHEN FILLING A GRADUATED CHARGING CYLINDER, REFRIGERANT THAT IS VENTED OFF THE TOP OF THE CYLINDER: A: NEED NOT BE RECOVERED B: MUST BE RECOVERED C: IS CONSIDERED A DE MINUS RELEASE D: NONE OF THE ABOVE. The refrigerant must be recovered if it is a CFC, HCFC, or HFC. of R-22 D: a dehumidifier with 7 oz. Seasonal variance means the removal of refrigerant from an appliance due to a change in ambient conditions caused by a change in season, followed by the subsequent addition of an amount that is less than or equal to the amount of refrigerant removed in the prior change in season, where both the removal and addition of refrigerant occurs within one consecutive 12-month period. The air velocity is not to exceed 8 m/s to minimize vibration and noise. Parent company means an individual, corporation, partnership, association, joint-stock company, or an unincorporated organization that can direct or cause the direction of management and policies of another entity, through the ownership of shares or otherwise.

RECOVERY EQUIPMENT USED DRUING MAINTENANCE, SERVICE OR REPAIR OF SMALL APPLIANCES MUST BE CERTIFIED BY AN EPA APPROVED LABORATORY IF MANUFACTURED AFTER: D: NOVEMBER 15 1993. A: 75 PSIG B: 50 PSIG C: 30 PSIG D: 0 PSIG, WHICH OF THE FOLLOWING REFRIGERANTS MUST BE RECOVERED WITH EQUIPMENT CURRENTLY REGULATED BY THE EQUIPMENT CERTIFICATION REQUIREMENTS OF THE EPA UNDER SECTION 608? IF A RECLAMATION FACILITY RECEIVES A TANK OF MIXED REFRIGERANT THEY MAY: THE SYSTEM-DEPENDANT (PASSIVE) RECOVERY PROCESS FOR SMALL APPLIANCES: A: NEVER NEEDS THE USE OF A PUMP OR HEAT TO RECOVER REFRIGERANT. Follow-up verification test means those tests that involve checking the repairs to an appliance after a successful initial verification test and after the appliance has returned to normal operating characteristics and conditions to verify that the repairs were successful. Why should low and high side access valve s be installed when recovering refrigerant from a household refrigerator? The combined efficiency of the fan-motor unit to be used can be taken to be 50 percent. Multiply the result of Step 2 by 100 to obtain a percentage. These are typically single releases but could also include products that are designed to release refrigerant to the environment through multiple individual charges. A: WHEN THE RECOVERY TANK INLET VALVE HAS NOT BEEN OPENED B: WHEN THERE IS EXCESS AIR IN THE RECOVERY TANK C: WHEN THE RECOVERY TANK OUTLET VALVE HAS NOT BEEN OPENED D: BOTH A AND B, WHICH OF THE FOLLOWING IS NOT A METHOD OR DEVICE PRESENTLY USED FOR MONITORING THE 80% FILL LEVEL IN A RECOVERY TANK? Potential methods include, but are not limited to, ultrasonic tests, gas-imaging cameras, bubble tests as appropriate, or the use of a leak detection device operated and maintained according to manufacturer guidelines. Comfort cooling means the air-conditioning appliances used to provide cooling in order to control heat and/or humidity in occupied facilities including but not limited to residential, office, and commercial buildings. Have manual or self-sealing valves on the ends of the gauge set hoses to minimize any release of refrigerant. A: USE BUTYL-LINED GLOVES AND TRY TO STOP THE LEAK B: USE A LEAK DETECTOR TO LOCATE AND TRY TO STOP THE LEAK. viot couplers availavle D: BE USED ALONE AS A SYSTEM DEPENDENT (PASSIVE) RECOVERY DEVICE, IN ORDER TO AVOID REMOVAL OF LIQUID WHEN DRAWING VAPOR FROM A SEAL REFRIGERATION SYSTEM USING A SELF CONTAINED (ACTIVE) RECOVERY DEVICE THAT CANNOT HANDLE LIQUID REFRIGERANT, YOU SHOULD DRAW VAPOR FROM THE: A: CAPILLARY TUBE B: LOW SIDE C: HIGH SIDE. equipment Industrial process refrigeration means complex customized appliances that are directly linked to the processes used in, for example, the chemical, pharmaceutical, petrochemical, and manufacturing industries. EQUIPMENT MANUFACTURED AFTER NOVEMBER 15 1993 WHICH IS USED TO RECOVER REFRIGERANT FROM SMALL APPLIANCES FOR THE PURPOSE OF DISPOSAL MUST MEET WHAT STANDARD: THE SALE OF CFC AND HCFC REFRIGERANTS IS:. WHEN INSTALLING ANY TYPE OF ACCESS FITTING INTO 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. In general, recycled refrigerant is cleaned using oil separation and single or multiple passes through devices, such as replaceable core filter-driers, which reduce moisture, acidity, and particulate matter. One-time expansion device means an appliance that relies on the release of its refrigerant charge to the environment in order to provide a cooling effect. Which of the following best describes low loss fittings on refrigerant recovery devices used to recover CFCs, HCFCs, and HFCs? manifold tool hvac hose loss low r410a r22 epa applied r134a gauge does couplers robinair Examples include but are not limited to appliances using R-22, R-407A, R-407C, R-410A, and R-502. A: AMMONIA B: HYDROGEN C: WATER D: NON OF THE ABOVE, WHICH OF THE FOLLOWING REFRIGERANTS IS MOST COMMONLY USED AS A REPLACEMENT FOR R-12 IN NEW HOUSEHOLD REFRIGERATORS? Make a sketch. A: an MVAC like system that holds 3 lbs of R-12 B: a water cooler that hold 13oz. hose refrigerant valve ball charging psi fighting inch fire A fan is to be selected to ventilate a bathroom whose dimensions are $2 m imes 3 m imes 3 m$. USING THE SYSTEM-DEPENDENT (PASSIVE) RECOVERY PROCESS, WHICH CONDITION REQUIRES THE ACCESSING BOTH THE HIGH AND LOW SIDE OF THE SYSTEM FOR RECOVERY? The leak rate is expressed in terms of the percentage of the appliance's full charge that would be lost over a 12-month period if the current rate of loss were to continue over that period. Leak inspection means the examination of an appliance to determine the location of refrigerant leaks. exchanger brazed globalindustrial bp400 30lp 10lp exchangers 10mt auctiva refrigerant If the fan is to replace the entire volume of air in 10 min. Take the air density to be $1.25 kg/m^3$ and disregard the effect of the kinetic energy correction factors. Mothball means to evacuate refrigerant from an appliance, or the affected isolated section or component of an appliance, to at least atmospheric pressure, and to temporarily shut down that appliance. WHEN USING A SYSTEM-DEPENDENT (PASSIVE) RECOVERY PROCESS ON OPERATING COMPRESSORS, TECHS SHOULD: A: RUN THE COMPRESSOR AT 240 VOLTS WHILE RECOVERING THE REFRIGERANT FROM THE CAPILLARY TUBE. D: USE RECOVERY EQUIPMENT TO GAIN ACCESS TO THE SYSTEM DURING TESTING. The system will have to be flushed if contaminants are present. Approved equipment testing organization means any organization which has applied for and received approval from the Administrator pursuant to 82.160. This sector also includes industrial ice machines, appliances used directly in the generation of electricity, and ice rinks. Take the shorter of the number of days that have passed since the last day refrigerant was added or 365 days and divide that number by 365 days; (iii) Step 3. 2003-2022 Chegg Inc. All rights reserved. Which of the following refrigerants is very high pressure and generally does NOT need to be recovered? 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? This includes, but is not limited to, the air-conditioning equipment found on agricultural or construction vehicles. Answers: 0.0704 lbm/s, 0.133 ft^2. of R-500, FOR WHICH OF THE FOLLOWING REFRIGERATION SYSTEMS WOULD IT BE PERMISSIBLE TO USE A PASSIVE RECOVERY DEVICE FOR REFRIGERANT RECOVERY? (i) Step 1. Potential methods for follow-up verification tests include, but are not limited to, the use of soap bubbles as appropriate, electronic or ultrasonic leak detectors, pressure or vacuum tests, fluorescent dye and black light, infrared or near infrared tests, and handheld gas detection devices. Connecting and disconnecting hoses and gauges to measure pressures, add refrigerant, or recover refrigerant from the appliance are not considered opening an appliance.. Recover 80 % of the refrigerant with an inoperative compressor and 90 % of the refrigerant with an operative compressor. The rate must be calculated using one of the following methods. D: THE SYSTEM MUST BE PRESSURIZED WITH DRY NITROGEN BEFORE LEAK TESTING CAN BE ATTEMPTED. Activities conducted on appliances that have been properly evacuated pursuant to 82.156 are not reasonably expected to release refrigerants unless the activity includes adding refrigerant to the appliance. WHEN RECOVERING REFRIGERANT INTO A NON PRESSURIZED CONTAINER FROM A REFRIGERATOR WITH AN INOPERATIVE COMPRESSOR: A: IT IS NECESSARY TO HEAT AND STRIKE THE COMPRESSOR WITHA RUBBER MALLET B: IT IS ONLY NECESSARY TO RECOVER AS MUCH REFRIGERANT AS WILL NATURALLY FLOW OUT OF THE SYSTEM. recovery refrigerant tool code order This method is summarized in the following formula: (2) Rolling Average Method. A: 2 VALVES, ONE ON THE HIGH SIDE AND ONE ON THE LOW SIDE. Batch means a single bulk cylinder of refrigerant after all reclamation has been completed prior to packaging or shipping to the market. sanhua solenoid mdf valve valves refrigeration C: THE FITTING NEED NOT BE TESTED UNTIL THE TOTAL REPAIR IS COMPLETED. Examples include, but are not limited to hydrofluorocarbons, perfluorocarbons, hydrofluoroolefins, hydrofluoroethers, hydrocarbons, ammonia, carbon dioxide, and blends thereof. determine (a) the wattage of the fan-motor unit to be purchased, (b) the diameter of the fan casing, and (c) the pressure difference across the fan. quick Equipment which is used to recover CFC, HCFC, and HFC refrigerant from small appliances for the purpose of disposal must meet what standard? Retire, when referring to an appliance, means the removal of the refrigerant and the disassembly or impairment of the refrigerant circuit such that the appliance as a whole is rendered unusable by any person in the future.