1、Designation:F264707(Reapproved 2013)An American National StandardStandard Guide forApproved Methods of Installing a CVS(Central VacuumSystem)1This standard is issued under the fixed designation F2647;the number immediately following the designation indicates the year oforiginal adoption or,in the ca
2、se of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide demonstrates proper methods for installing acentral-vacuum system.1.2 Appendix X1 con
3、tains additional sources of informationthat may be helpful to the user of this guide.1.3 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.1.4 This standard does not purport to address all of thesafety concerns,if any,asso
4、ciated 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.2.Referenced Documents2.1 ASTM Standards:2E814 Test Method for Fire Tests of Penetration FirestopSyst
5、emsE2174 Practice for On-Site Inspection of Installed FirestopsF402 Practice for Safe Handling of Solvent Cements,Primers,and Cleaners Used for Joining ThermoplasticPipe and FittingsF412 Terminology Relating to Plastic Piping SystemsF2158 Specification for Residential Central-Vacuum Tubeand Fittings
6、3.Terminology3.1 Definitions:3.2 For definitions of terms used in this guide,see Termi-nology F412.4.Significance and Use4.1 The suggestions of this guide are intended to provideproper installation materials and practices to be used during theinstallation of a central-vacuum system.5.Materials5.1 Pl
7、astic MaterialsFor information on plastic materialsused for installing a CVS system,see Specification F2158.1This guide is under the jurisdiction of ASTM Committee F11 on VacuumCleaners and is the direct responsibility of Subcommittee F11.30 on Durability-Reliability.Current edition approved Dec.1,2
8、013.Published December 2013.Originallyapproved in 2007.Last previous edition approved in 2007 as F264707.DOI:10.1520/F2647-07R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,r
9、efer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 APPENDIXES(Nonmandatory Information)X1.STORAGEX1.1 Outside StoragePlastic tube should be stored on aflat surface or supported i
10、n a manner that will prevent saggingor bending.Do not store tube in direct sunlight for longperiods.To prevent damage,tubing and fittings should not bestored where the temperature exceeds 130F(54C).X1.2 Inventories of plastic tube should be used on a first-in,first-out basis.X2.JOINTS AND CONNECTION
11、SX2.1 PVC tubing and fittings shall be joined by the solvent-cement method.X2.2 Metal tubing and fittings shall be joined according toAppendix X4.X3.SOLVENT CEMENT JOINTSX3.1 Tube CuttingCut the tube square with the axis,usinga fine-tooth handsaw and a miter box.A rotary cutter may beused if the cut
12、ting blades are specifically designed for cuttingplastic tube in such a way as not to raise a burr or ridge(flare)at the cut end(see Fig.X3.1).Remove all burrs with adeburring tool,knife,file,or abrasive paper.X3.2 Dry Fit TestThe solvent cement joint is designed sothat there will generally be inter
13、ference of the tube wall withthe fitting socket before the tube is fully inserted.Insert thetube into the fitting and check that the interference occurs about13to23of the socket depth(Fig.X3.2).X3.3 CleaningSurfaces to be joined must be cleaned andbe free of dirt,moisture,oil,and other foreign mater
14、ial.If thiscannot be accomplished by wiping with a clean,dry cloth,achemical or mechanical cleaner must be used.If a chemicalcleaner is used,apply with an applicator.(WarningSkincontact with chemical cleaners should be avoided.)X3.4 Application Procedure:X3.4.1 Handling CementKeep the cement can clo
15、sed andin a shady place when not actually in use.Discard the cementwhen an appreciable change in viscosity takes place or at thefirst sign of gelation.The cement should not be thinned.Keepthe applicator immersed in cement between applications.(SeePractice F402 for proper handling procedures.)X3.4.2
16、Application of CementPVC solvent cement is fastdrying,and,therefore,the cement shall be applied as quickly aspossible,consistent with good workmanship(see Fig.X3.3).The surface temperature of the mating surfaces should notexceed 110F(43C)at the time of assembly.X3.4.3 Apply cement lightly but uniformly to the outside ofthe tubing,taking care to keep the use of cement to a minimum.(WarningApplication of cement to fitting socket is notrecommended and can cause drippings or an excess amount ofFIG.X
