ASTM_F_820_-_11.pdf

Designation:F82011An American National StandardStandard Test Method forMeasuring Air Performance Characteristics of CentralVacuum Cleaning Systems1This standard is issued under the fixed designation F820;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers procedures for determining airperformance characteristics of household central vacuumcleaning systems,which use a flexible cleaning hose assemblyand incorporates a series universal motor(s).This test methoddoes not apply to the carpet cleaning mode of operation wheredirt or debris is involved.1.2 These tests and calculations include determination ofsuction,airflow,air power,maximum air power,and inputpower under standard operating conditions(see Note 1).NOTE1For more information on air performance characteristics,seeRefs(1-6).21.3 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are providedfor information only.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.A specific precau-tionary statement is given in Note 4.2.Referenced Documents2.1 ASTM Standards:3E1 Specification for ASTM Liquid-in-Glass ThermometersE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision LiquidsF431 Specification for Air Performance Measurement Ple-num Chamber for Vacuum Cleaners2.2 AMCA Standard:421085 Laboratory Methods of Testing Fans for Rating2.3 IEC Standard:5IEC 60312 Ed 3.2 Vacuum Cleaners for Household UseMethods of Measuring the Performance3.Terminology3.1 Definitions:3.1.1 air power,AP,W,nin a vacuum cleaner,the net timerate of work performed by an air stream while expendingenergy to produce an airflow by a vacuum cleaner underspecified air resistance conditions.3.1.2 automatic bleed valve,nany device a part of avacuum cleaners design,which automatically introduces anintentional leak within the vacuum cleaners system whenmanufacturer specified conditions are met.3.1.3 corrected airflow,Q,cfm,nin a vacuum cleaner,thevolume of air movement per unit of time under standardatmospheric conditions.3.1.4 input power,W,nthe rate at which electrical energyis absorbed by a vacuum cleaner.3.1.5 model,nthe designation of a group of vacuumcleaners having the same mechanical and electrical construc-tion with only cosmetic or nonfunctional differences.3.1.6 population,nthe total of all units of a particularmodel vacuum cleaner being tested.3.1.7 repeatability limit(r),nthe value below which theabsolute difference between two individual test results obtainedunder repeatability conditions may be expected to occur with aprobability of approximately 0.95(95%).3.1.8 reproducibility limit(R),nthe value below which theabsolute difference between two test results obtained under1This test method is under the jurisdiction ofASTM Committee F11 on VacuumCleaners and is the direct responsibility of Subcommittee F11.22 on Air Perfor-mance.Current edition approved Nov.1,2011.Published December 2011.Originallyapproved in 1988.Last previous edition approved in 2006 as F820 06.DOI:10.1520/F0820-11.2The boldface numbers in parentheses refer to the list of references at the end ofthis standard.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from Air Movement and Control Association,Inc.,30 West Univer-sity Dr.,Arlington Heights,IL 600041893.5Available from the IEC Web store,webstore.iec.ch,or American NationalStandards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 reproducibility conditions may be expected to occur with aprobability of approximately 0.95(95%).3.1.9 repeatability standard deviation(Sr),nthe standarddeviation of test results obtained under repeatability condi-tions.3.1.10 reproducibility standard deviation(SR),nthe stan-dard deviation of test results obtained under reproducibilityconditions.3.1.11 sample,na group of vacuum cleaners taken from alarge collection of vacuum cleaners of one particular model,which serves to provide information that may be used as a basisfor making a decision concerning the larger collection.3.1.12 standard