ASTM_F_2142_-_01_2013.pdf

Designation:F214201(Reapproved 2013)An American National StandardStandard Test Method forPerformance of Drawer Warmers1This standard is issued under the fixed designation F2142;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 preheat,idle,and holdingenergy consumption and temperature uniformity of drawerwarmers.The food service operator can use this evaluation toselect a drawer warmer and understand its energy performanceand temperature uniformity.A drawer warmer is described as acommercial kitchen appliance that consists of one or moreheated drawers and which is used to hold hot food(usually nogreater than 200F)that has been cooked in a separateappliance,at a specified temperature.1.2 This test method is applicable to freestanding andbuilt-in electric drawer warmers equipped for:1.2.1 Industry-standard 12 20 6in.(nominal size)pans,or1.2.2 Standard-oversized 15 20 5in.(nominal size)pans.1.3 The drawer warmer can be evaluated with respect to thefollowing(where applicable):1.3.1 Energy input rate(10.2),1.3.2 Energy consumption rate at maximum setting(10.2),1.3.3 Temperature calibration(10.3),1.3.4 Preheat energy consumption and time(10.4),1.3.5 Idle energy rate(10.5),1.3.6 Holding energy rate(10.6),and1.3.7 Temperature uniformity(10.6).1.4 The values stated in inch-pound units are to be regardedas 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 ASHRAE Document:2ASHRAE Guideline 21986(RA90)Engineering Analysisof Experimental Data2.2 NSF Standard:3StandardNumber4CommercialCooking,Rethermalization,and Powered Hot Food Holding andTransport Equipment3.Terminology3.1 Definitions:3.1.1 drawer pan,nthat portion of the appliance in whichfood products are held.Industry-standard drawer pans arenominally 12 20 6 in.deep;standard-oversized drawerpans are nominally 15 20 5 in.deep.3.1.2 drawer pan centerpoint temperature,n the tempera-ture as measured at the geometric center of the drawer panusing a single thermocouple.3.1.3 drawer warmer,nan appliance that consists of oneor more heated drawers and that is designed to hold hot foodthat has been cooked in a separate appliance at a specifiedtemperature.3.1.4 energy input rate,npeak rate at which a drawerwarmer consumes energy(kW),typically reflected duringpreheat.3.1.5 holding energy rate,nthe rate of energy consumed(Btu/h or kW)by the drawer warmer while keeping the heatedfood product(dinner rolls)warm.3.1.6 idle energy rate,nthe rate of energy consumed(kW)by the drawer warmer while“idling“or maintaining thedrawers at a calibrated 150F set point.3.1.7 preheat energy,namount of energy consumed by thedrawer warmer while preheating the drawer pan(s)fromambient room temperature(75 6 2.5F)to 150F,with thecontrol(s)set to a calibrated 150F.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 June 1,2013.Published August 2013.Originallyapproved in 2001.Last previous edition approved in 2007 as F2142 01(2007).DOI:10.1520/F2142-01R13.2Available from American Society of Heating,Refrigerating,and Air-Conditioning Engineers,Inc.(ASHRAE),1791 Tullie Circle,NE,Atlanta,GA30329,http:/www.ashrae.org.3Available from NSF International,P.O.Box 130140,789 N.Dixboro Rd.,AnnArbor,MI 48113-0140,http:/www.nsf.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.8 preheat rate,naverage rate(F/min)at which thedrawer pan is heated from ambient temperature(75 6 2.5F)to150F,with the control(s)set to a calibrated 150F.3.1.9 preheat time,ntime required for the drawer warmerto preheat from ambient room temperature(75 6 2.5F)to150F,with the control(s)set to a calibrated 150F.3.1.10 uncertainty,nmeasure of systematic and precisionerrors in specified instrumentation or measure of repeatabilityof a reported test result.4.Summary of Test Method4.1 The drawer warmer is connected to the appropriatemetered energy source,and the energy input rate is determinedto confirm that the appliance is operating within 5%of thenameplate energy input rate.4.2 The drawer pan temperature and energy consumptionrate are determined with the drawer warmer controls set to themaximum setting.4.3 The accuracy of the drawer warmers temperature con-trol is checked at 150F and adjusted as necessary to within65F.4.4 The amount of energy and time required to preheat thedrawer warme