ASTM_F_1920_-_15.pdf

Designation:F192015An American National StandardStandard Test Method forPerformance of Rack Conveyor Commercial DishwashingMachines1This standard is issued under the fixed designation F1920;the number immediately following the designation indicates the year oforiginal adoption or,in the case 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 test method evaluates the energy and water con-sumptionofrackconveyor,commercialdishwashingmachines,hereafter referred to as dishwashers.Dishwashersmay have remote or self-contained booster heater.This proce-dure does not address cleaning or sanitizing performance.1.2 This test method is applicable to both hot water sanitiz-ing and chemical sanitizing rack conveyor machines,whichinclude both single tank and multiple tank machines.Racklessconveyors(i.e.flight type machines)are included.Dishwashertank heaters are evaluated separately from the booster heater.Machines designed to be interchangeable in the field from hightemp and low temp(i.e.Dual Sanitizing Machines)and viceversa,shall be tested at both settings.Machines should be setfor factory settings.If a dishwasher includes a prewash tankheater as an option,energy should be submetered separately forthe prewash tank heater.This test method may be used fordishwashers with steam coil tank or booster heat,but notdishwashers with steam injection tank or booster heat.Whenthe test method specifies to use the data plate or manufacturersrecommendations,instructions,specifications,or requirements,the information source shall be used in the following order ofpreference and documented in the test report:data plate,usermanual,communication with manufacturer.1.3 The following procedures are included in this testmethod:1.3.1 Procedures to Confirm Dishwasher is OperatingProperly Prior to Performance Testing:1.3.1.1 Maximum energy input rate of the tank heaters(10.5).1.3.1.2 Maximum energy input rate of the booster heater,ifapplicable(10.6).1.3.1.3 Final sanitizing rinse water consumption calibration(10.7).1.3.1.4 Booster temperature calibration,if applicable(10.2).1.3.1.5 Wash tank temperature calibration(10.3).1.3.1.6 Wash tank pump and conveyor motor calibration(10.4).1.3.2 Energy Usage and Cycle Rate Performance Tests:1.3.2.1 Washing energy performance test(10.8).1.3.2.2 Tank heater idle energy rate(10.9).1.3.2.3 Booster idle energy rate,if provided(10.10).1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 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.2.Referenced Documents2.1 ASTM Standards:2D3588 Practice for Calculating Heat Value,CompressibilityFactor,and Relative Density of Gaseous FuelsF858 Specification for Hot Water Sanitizing CommercialDishwashing Machines,Single Tank,Conveyor RackTypeF861 Specification for Commercial Dishwashing Racks2.2 NSF Standards:NSF/ANSI 3 Commercial Warewashing Equipment3NSF/ANSI 170 Glossary of Foodservice Terms32.3 ASHRAE Standard:ASHRAE Guideline 21986(RA90)Engineering Analysisof Experimental Data43.Terminology3.1 Definitions of Terms Specific to This Standard:1This test method is under the jurisdiction of ASTM Committee F26 on FoodService Equipment and is the direct responsibility of Subcommittee F26.06 onProductivity and Energy Protocol.Current edition approved Aug.1,2015.Published October 2015.Originallyapproved in 1998.Last previous edition approved in 2011 as F1920 11.DOI:10.1520/F1920-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from NSF International,P.O.Box 130140,789 N.Dixboro Rd.,AnnArbor,MI 48113-0140,http:/www.nsf.org.4Available from American Society of Heating,Refrigerating,and Air-Conditioning Engineers,Inc.(ASHRAE),1791 Tullie Circle,NE,Atlanta,GA30329,http:/www.ashrae.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.1 ambient temperature,ndefined in NSF/ANSI 170-2014;Section 3.3.3.1.2 auxiliary rinse,ndefined in NSF/ANSI 170-2014;Section 3.5.3.1.3 average tank temperature,ntemperature of the washtank measured within12in.of the factory installed thermostatbulb.The temperature is measured and averaged during the 25rack(50 racks for flight type)loaded room temperaturewashing test.The time interval for averaging includes washing,rinsing,dwell,energyrecovery(forheatrecoveryd