ASTM F1920-2011 Standard Test Method for Performance of Rack Conveyor Commercial Dishwashing Machines《架式传送型商用洗碗机性能的标准试验方法》.pdf
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1、Designation: F1920 11An 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
2、 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-sumption of rack conveyor, commercial dishw
3、ashing ma-chines, hereafter referred to as dishwashers. Dishwashers mayhave remote or self-contained booster heater. This proceduredoes 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, whic
4、hinclude both single tank and multiple tank machines. Dish-washer tank heaters are evaluated separately from the boosterheater.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
5、input rate of the tank heaters(10.2).1.3.1.2 Maximum energy input rate of the booster heater, ifapplicable (10.3).1.3.1.3 Final sanitizing rinse water consumption calibration(10.4).1.3.1.4 Booster temperature calibration, if applicable (10.5).1.3.1.5 Wash tank temperature calibration (10.6).1.3.1.6
6、Wash tank pump and conveyor motor calibration(10.7).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
7、 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
8、 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
9、Specification for Hot Water Sanitizing CommercialDishwashing Machines, Single Tank, Conveyor Rack TypeF861 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
10、 (RA90) Engineering Analysisof Experimental Data43. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 booster heater, nwater heater for taking supply hotwater (typically 140F) up to 180F+ for sanitizing rinse; thebooster heater may be separate from dishwasher or integral.3.1.2 batc
11、h, na group of five dishloads as described in3.1.4.3.1.2.1 DiscussionThe dishracks are grouped into batchesto better simulate typical in-kitchen operation and facilitateconsistent application of the washing energy use test.3.1.3 cycle rate, nmaximum production rate of a dish-washer when washing dish
12、loads in accordance with the CycleRate Performance test.3.1.4 dishload, npeg-type, polypropylene dishrack of aspecified weight, loaded with ten 9-in. plates of a specifiedweight, used to put a thermal load on the dishwasher during thewashing energy test.1This test method is under the jurisdiction of
13、 ASTM Committee F26 on FoodService Equipment and is the direct responsibility of Subcommittee F26.06 onProductivity and Energy Protocol.Current edition approved June 1, 2011. Published July 2011. Originally approvedin 1998. Last previous edition approved in 2007 as F1920 07. DOI: 10.1520/F1920-11.2F
14、or 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. Dixb
15、oro 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Consho
16、hocken, PA 19428-2959, United States.3.1.5 dishwasher, nfor this test method, a machine thatuniformly washes, rinses, and sanitizes eating and drinkingutensils.3.1.5.1 DiscussionThe machine shall be capable of re-moving physical soil from properly racked and prescrapeditems, and sanitizing multiple-
17、use eating and drinking utensils.3.1.6 empty dish rack, ndish rack without any dishwareplaced in the dish rack.3.1.6.1 DiscussionTwo empty dish racks are run throughthe dishwasher prior to washing the first dishload to conditionthe dishwasher for testing as specified in the Washing EnergyTest (see 1
18、0.8).3.1.7 rated temperature, ndishwashers rated nameplateminimum operating tank temperature as determined by NSF/ANSI 3.3.1.8 recovery time, ntime from the end of washing adishload to until the wash tank heaters have cycled off.3.1.8.1 DiscussionAll tank heaters must cycle off at leastonce for a mu
19、ltiple tank machine.3.1.9 tank heater idle rate, nrate of energy consumed bythe dishwasher while “holding” or maintaining the wash tankwater at the thermostat(s) set point during the time periodspecified.3.1.10 uncertainty, nmeasure of systematic and precisionerrors in specified instrumentation or m
20、easure of repeatabilityof a reported test result.4. Summary of Test Method4.1 The maximum energy input rate of the tank heater andthe booster heater, if applicable, is measured to confirm that thedishwasher is operating at the manufacturers rated input. If themeasured input rate is not within 5 % of
21、 the rated input, allfurther testing ceases, and the manufacturer shall be contacted.The manufacturer may make appropriate changes or adjust-ments to the dishwasher.NOTE 1It is the intent of the testing procedure herein to evaluate theperformance of a dishwasher at its rated gas pressure or electric
22、 voltage.If an electrical unit is rated dual voltage, that is, designed to operate ateither 208 or 240 V with no change in component, the voltage selected bythe manufacturer or the tester, or both, shall be reported. If a dishwasheris designed to operate at two voltages without a change in the resis
23、tanceof the heating elements, the performance of the unit, for example, cyclerate, may differ at the two voltages. Therefore the tests must be performedat both voltages and the results reported accordingly.4.2 Wash tank and booster temperatures are retained at themanufacturers factory settings.4.3 W
24、ater consumption is adjusted in accordance withmanufacturers rated water consumption per NSF/ANSI 3. Thepressure regulator valve is adjusted to 20 6 1 psi and the waterconsumption measured. If this is not within 60.15 GPM of theNSF rating or the manufacturers rating if not listed to NSFstandards, th
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