SONS RECOVERING REFRIGERANT DUIN

2021/05/21

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? Determine the mass flow rate and the inlet area. A: SAFETY GLASSES AND BUTYL-LINED GLOVES ARE SUFFICIENT B: SELF CONTAINED BREATHING APPARATUS OR LEAVING THE AREA IS REQUIRED. of R-22 D: a dehumidifier with 7 oz. (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. The refrigerant must be recovered if it is a CFC, HCFC, or HFC. is the rate at which a computer's CPU executes instructions. 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. couplers robinair When installing any type of access fitting onto a sealed system; the fitting should be leak tested before proceeding with recovery. A: FLOAT DEVICE B: SCALES C: SIGHT GLASS D: THERMISTOR, AFTER INSTALLING AND OPENING A PIERCING VALVE, IF THE SYSTEM PRESSURE IS ____DO NOT BEGIN THE RECOVERY PROCEDURE? Reclaim means to reprocess recovered refrigerant to all of the specifications in appendix A of this subpart (based on AHRI Standard 700-2016, Specifications for Refrigerants) that are applicable to that refrigerant and to verify that the refrigerant meets these specifications using the analytical methodology prescribed in section 5 of appendix A of this subpart. 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. C: OTHERWISE THE COMPRESSOR MAY BE DAMAGED D: BOTH A AND B. 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. Apprentice means any person who is currently registered as an apprentice in maintenance, service, repair, or disposal of appliances with the U.S. Department of Labor's Office of Apprenticeship (or a State Apprenticeship Council recognized by the Office of Apprenticeship). Turn on the defrost heater to increase the refrigerant 's temperature and vaporize any liquids. VEHICLES. WHEN R-500 IS RECOVERED FROM AN APPLIANCE IT: A: CAN BE MIXED WITH R-22 OR R-12 DURING THE RECOVERY PROCESS SINCE R-500 IS A MIXTURE OF THE TWO.

Wear safety eyewear and butyl-lined gloves when connecting/disconnecting hoses. The system dependent (passive) recovery process. A: WHEN THERE IS A LEAK B: WHEN THE COMPRESSOR OPERATES NORMALLY C: WHEN THE COMPRESSOR ONLY RUNS AT HALF SPEED D: WHEN THE COMPRESSOR DOES NOT RUN. 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. The air velocity is not to exceed 8 m/s to minimize vibration and noise. Examples include but are not limited to appliances using R-13, R-23, R-503, R-508A, and R-508B. 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. A: WEIGHT OF EACH CYLINDER B: TOTAL CUBIC FEET OF EACH GAS C: NUMBER OF CYLINDERS OF EACH GAS D: TOTAL WEIGHT OF ALL CYLINDERS, IF A LARGE LEAK OF REFRIGERANT OCCURS SUCH AS FROM A FILLED CYLINDER IN AN ENCLOSED AREA, WHAT ACTION SHOULD BE TAKEN WHEN NO SELF-CONTAINED BREATHING APPARATUS IS AVAILABLE? 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. Take the number of pounds of refrigerant added to the appliance to return it to a full charge, whether in one addition or if multiple additions related to same leak, and divide it by the number of pounds of refrigerant the appliance normally contains at full charge; (ii) Step 2. Examples include, but are not limited to hydrofluorocarbons, perfluorocarbons, hydrofluoroolefins, hydrofluoroethers, hydrocarbons, ammonia, carbon dioxide, and blends thereof. USING THE SYSTEM-DEPENDENT (PASSIVE) RECOVERY PROCESS, WHICH CONDITION REQUIRES THE ACCESSING BOTH THE HIGH AND LOW SIDE OF THE SYSTEM FOR RECOVERY? 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. 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. What happens to the component of a in the direction of b if you change the length of b? ALL APPLIANCES MUST BE EQUIPPED WITH A SERVICE APERTURE OR OTHER DEVICE WHICH IS USED WHEN ADDING OR REMOVING REFRIGERANT FROM THE APPLIANCE. Major maintenance, service, or repair means any maintenance, service, or repair that involves the removal of any or all of the following appliance components: compressor, condenser, evaporator, or auxiliary heat exchange coil; or any maintenance, service, or repair that involves uncovering an opening of more than four (4) square inches of flow area for more than 15 minutes. A stan dard vacuum pump designed specifically for evacuation and dehydration can; never be used as a recovery device in combination with a pressurized container. 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. What can CFC and HCFC refrigerants decompose into at high temperatures (e.g. A: COPPER B: ALUMINUM C: STEEL D: BOTH A AND B, WICH OF THE FOLLOWING RECOVERY MAINTENANCE PRACTICES SHOULD BE PERFORMED ON A REGULAR BASIS? 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. Class I refers to an ozone-depleting substance that is listed in 40 CFR part 82 subpart A, appendix A. Normal operating characteristics and conditions are marked by the absence of atypical conditions affecting the operation of the appliance. Equipment which is used to recover CFC, HCFC, and HFC refrigerant from small appliances for the purpose of disposal must meet what standard? Recovery efficiency means the percentage of refrigerant in an appliance that is recovered by a piece of recovery and/or recycling equipment. C: THE CONTAMINANTS WILL EAT AWAY AT THE RECOVERY EQUIPMENT. 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? D: THE CONTAMINANTS WILL PLUG UP THE RECOVERY EQUIPMENT, THE SYSTEM DEPENDENT (PASSIVE) RECOVERY PROCESS: A: NEVER NEEDS THE USE OF A PUMP OR HEAT TO RECOVER THE REFRIGERANT. 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. 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. 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:. Why should the technician watch for signs of contamination in the oil when recovering refrige rant from a system that experienced a compressor burnout? (i) Step 1. Commercial refrigeration means the refrigeration appliances used in the retail food and cold storage warehouse sectors. Recycle, when referring to refrigerant, means to extract refrigerant from an appliance (except MVACs) and clean it for reuse in equipment of the same owner without meeting all of the requirements for reclamation. Recovery devices for use with small appliances containing CFCs, HCFCs, and HFCs must meet which of the following requirements? The outlet area and velocity are 0.01 ft^2 and 100 ft/s, respectively, and the inlet velocity is 50 ft/s. Which of the following is required when attaching a gauge set to check system pressures?