1、Designation: F858 07 (Reapproved 2013)1F858 18 An American National StandardStandard Specification forHot Water Sanitizing Commercial Dishwashing Machines,Single Tank, Conveyor Rack Type1This standard is issued under the fixed designation F858; the number immediately following the designation indica
2、tes 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.This standard has been approved for use by agencies of the U
3、.S. Department of Defense.1 NOTEUnit conversions added editorially in March 2013.1. Scope1.1 This specification covers single tank, automatic rack type, commercial dishwashing machines.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathe
4、maticalconversions to SI units that are provided for information only and are not considered standard.1.3 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of Internationa
5、l Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A436 Specification for Austenitic Gray Iron CastingsA554 Specification for Welded Stainless Steel Mechanical TubingA582/A582M Specifica
6、tion for Free-Machining Stainless Steel BarsB43 Specification for Seamless Red Brass Pipe, Standard SizesB127 Specification for Nickel-Copper Alloy (UNS N04400) Plate, Sheet, and StripF760 Specification for Food Service Equipment ManualsF861 Specification for Commercial Dishwashing RacksF1920 Test M
7、ethod for Performance of Rack Conveyor Commercial Dishwashing Machines2.2 Federal Regulation:OSHA Title 2932.3 NSF International Standards, Criteria, and Listings:4NSF/ANSI 3 Commercial Warewashing EquipmentNSFNSF/ANSI 5 Commercial Water Heaters, Hot Water Generating Supply Boilers, and Heat Recover
8、y EquipmentNSFNSF/ANSI 29 Detergent/Chemical Feeders for Commercial Spray-Type Dishwashing MachinesNSF/ANSI 51 Plastic Materials and Components Used in Food EquipmentNSF Food Equipment and Related Products, Components, and Materials2.4 Underwriters Laboratories Standard:UL 921 Commercial Electric Di
9、shwashers5UL 1453 Electric Booster and Commercial Storage Tank Water Heaters1 This specification is under the jurisdiction of ASTM Committee F26 on Food Service Equipment and is the direct responsibility of Subcommittee F26.01 on Cleaningand Sanitation Equipment.Current edition approved March 1, 201
10、3May 1, 2018. Published April 2013May 2018. Originally approved in 1984. Last previous edition approved in 20072013 asF858 07.F858 07 (2013)1. DOI: 10.1520/F0858-07R13E01.10.1520/F0858-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at servicea
11、stm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Code of Federal Regulations, Chapter XVII, Part 1910, available from Superintendent of Documents, Government Printing Office, Washington, DC 20402.4 Available from NSF Int
12、ernational, 789 N. Dixboro Rd., Ann Arbor, MI 48105-9723.5 Available from Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, IL 60062.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the p
13、revious version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM
14、 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.5 American Society of Sanitary Engineering Standards:ASSE 1004 Dishwashers63. Terminology3.1 Definitions:3.1.1 commercial dishwashing machines, nmachines that uniformly wash, rinse, and hot water sa
15、nitize eating and drinkingutensils.3.1.1.1 DiscussionThe machines shall be capable of removing physical soil from properly racked and pre-scraped items, and sanitizing multiple useeating and drinking utensils. These machines shall automatically convey racks of soiled dishes through the treatment sta
16、ges of themachine, conveying them out at the clean end of the machine. The dishwashing machines shall consist of the following principleparts: base, or legs, or both; wash chamber; rinse chamber; tanks; doors; spray assemblies; pumps; motors; controls; piping; valves;heating equipment; conveying mec
17、hanism; and accessories.4. Classification4.1 GeneralDishwashing machines shall be of the following types, styles, classes, size, and capacity groups, as specified.4.2 Types:4.2.1 Type IThis machine shall be designed and supplied to accept the feeding of soiled tableware from the right side, whenfaci
18、ng the front of the machine.4.2.2 Type IIThis machine shall be designed and supplied to accept the feeding of soiled tableware from the left side, whenfacing the front of the machine.4.3 Styles and Classes:4.3.1 Style 1 (Steam Heated)(20 to 35 psi, 137.9 to 241.3 kPa) flowing pressure at point of ma
19、chine connection.4.3.1.1 Class AInjector.4.3.1.2 Class BHeat exchange coil.4.3.2 Style 2 (Electrically heated).4.3.3 Style 3 (Gas-heated).4.3.3.1 Class CNatural gas.4.3.3.2 Class DLP gas.4.4 Size and Capacity:4.4.1 Group A1934 by 1934 in. (501.6 by 501.6 mm) (nominal) racks at 162 per hour minimum.4
20、.4.2 Group B1934 by 1934 in. (501.6 by 501.6 mm) (nominal) racks at 180 per hour minimum.4.4.3 Group C1934 by 1934 in. (501.6 by 501.6 mm) (nominal) racks at 194 per hour minimum.4.5 All dishwashing machines of the same classification, model or material list designation furnished with similar option
21、s undera specific purchase order, shall be identical to the extent necessary to ensure interchangeability of component parts, assemblies,accessories, and spare parts.5. Ordering Information5.1 Purchasers should select the preferred options permitted in this specification and include the following in
22、formation inprocurement documents:5.1.1 Title, number, and date of this standard;5.1.2 Type, style, class, and group machine required (see 4.1);5.1.3 Noise level requirements, if other than specified (See 11.2);5.1.4 When a service-supply valve is required (see 7.4);5.1.5 When a standard 40F (22C) t
23、emperature rise steam, or electric, or gas booster is required, or stipulate if the requiredtemperature rise is more than 40F (22C) (see 7.13);5.1.6 Electrical power supply characteristics (current, voltage, phase, frequency). See Section 8;5.1.7 When a detergent feeder is required (see 7.15);5.1.8
24、When a rinse agent feeder is required (see 7.16);5.1.9 Accessory equipment, such as end cowls with vent opening, or spare and maintenance parts required, as suggested bymanufacturer;5.1.10 Treatment and painting if other than specified (see Section 10);6 Available from American Society of Sanitary E
25、ngineering, 901 Canterbury, Suite A, Westlake, Ohio 44145.F858 1825.1.11 When energy consumption profiles, water consumption profiles, or productivity profiles are desired (see 12.3); and5.1.12 Manufacturers certification, when required (see Section 13).6. Materials and Design6.1 All materials shall
26、 be specified as follows:6.1.1 Materials used shall be free from defects that would adversely affect the performance or maintainability of individualcomponents of the overall assembly. The dishwashing machines shall meet the material, design, and construction requirements ofNSF/ANSI 3.6.1.2 Corrosio
27、n-Resistant SteelCorrosion-resistant steel shall conform to the requirements of any 300 series stainless steelspecified in 2.1.6.1.3 Corrosion Resisting MaterialCorrosion-resisting material is other than corrosion resistant steel that is equivalent in thedishwasher application.6.1.4 Nickel-Copper Al
28、loyNickel-copper alloys shall conform to the requirements of Specification B127.6.1.5 PlasticsAll plastic materials and components used in the dishwashing machine rinse system shall conform to NSF/ANSI3 or NSF/ANSI 51.7. Construction Requirements7.1 The dishwashing machine shall be complete so that
29、when connected to the specified source of power, water supply, heatingmeans (steam, electric, or gas), drainage, detergent, and rinse agent feeder as applicable, the unit can be used for its intendedfunction. Dishwashers shall be rigid, quiet in operation, free from objectionable vibration, and so c
30、onstructed as to preventobjectionable splashing of water to the outside of the machine. The machine shall be equipped with splash curtains to preventexcessive splash and spray carryover. Parts requiring adjustment or service, or both, shall be readily accessible from the front andside of the machine
31、. The machine shall wash dishes by means of a water and detergent solution pumped from the wash tank andshall final rinse the dishes with fresh water from an outside source. Provisions shall be made to fill the wash tank either directlyfrom the regular hot water supply or through a booster. The dish
32、washing machine shall have a conveyor for handling 1934 by 1934in. (501.6 by 501.6 mm) (nominal) racks. The conveyor shall be protected by an adjustable slip clutch or other device. Means shallbe provided for releasing or disconnecting the driving power, or the drive, in case of jamming. The conveyo
33、r shall be driven bya motor-driven gear reduction unit. The pumped wash and final rinse treatment shall be controlled by means of the conveyor speedas determined by NSF/ANSI 3 for single tank conveyor type machines. The final rinse spray control shall have a positive returnto the OFF position when t
34、here are no racks in process to ensure the conservation of final rinse water. The machine shall beprovided with tracks of corrosion-resistant steel or other corrosion-resisting material 0.070 in. (1.78 mm) or equivalent die formed0.059 in. (1.5 mm). Dishwashers shall have an inside working height of
35、 not less than 1712 in. (444.5 mm) above the track.7.2 ConveyorThe conveyor shall be of heavy duty construction and of a suitable corrosion-resisting material. It shall bedesigned to convey racks through the dishwasher automatically. See Specification F861.7.3 Piping, Tubing, Fittings, and Valves (I
36、nstallation)Connections shall be readily accessible to facilitate installation andmaintenance. Piping, tubing, and valves shall be located, whenever possible, on the exterior of the machine.7.4 Piping and FittingsWater, steam piping, and fittings shall be of corrosion-resisting material (see Specifi
37、cation B43). Freshwater supply to the tank shall be discharged not lower than 2 in. (50.8 mm) above the maximum flood level rim, or an effectiveair gap or vacuum breaker shall be installed to prevent backflow. Backflow protection shall be in accordance withASSE 1004. Thedrain and other plumbing conn
38、ections shall be standard pipe or tubing connections. Drainage piping shall be corrosion-resistingmaterial, or suitable heat-resisting plastic tubing with fittings. Drains may be joined into a single trunk line requiring only oneconnection or arranged to permit individual connections to the waste li
39、ne.7.5 ValvesSteam valves shall be corrosion-resisting material designed for steam applications and for a saturated steamworking pressure of 50 psi (344.6 kPa). When specified, a separately packed service supply valve shall be provided for closingthe supply of water to the dishwasher. The drain valv
40、e shall be permanently marked to show “open” and “closed” position and shallbe lever-operated, ruggedly designed for foot or hand operation except when drain valve closure is automatic. Fresh water rinsevalves shall be reliable and fully automatic and suitable for 210F (98.9C) water. The manually op
41、erated valves shall be identified.7.6 Spray AssembliesAll spray nozzles and spray arm manifolds shall be corrosion resisting materials (see SpecificationsA554 and A582/A582M). All spray assemblies shall be removable without the use of tools and shall be easy to clean. Finalsanitizing rinse spray ass
42、emblies, components, or both shall be removable for deliming, descaling, and similar maintenance.7.7 TankThe tank shall be constructed of not less than 0.055 in. (1.4 mm) corrosion-resistant steel, or other corrosion resistingmaterial.7.8 OverflowThe dishwashers shall have a readily accessible overf
43、low drain in the tank. The overflow unit, or cover, whenprovided, shall be removable for cleaning.7.9 Scrap Trays (Strainers)Scrap trays of corrosion-resistant steel, not less than 0.044 in. (1.1 mm) thick, or other corrosionresisting material shall be provided to prevent insoluble matter and large
44、pieces of food residue from passing into the tank. TheF858 183ledges on which the scrap trays rest shall be so designed that surfaces beneath the ledges are easily accessible for cleaning whenthe trays are removed.Any opening around or between scrap trays shall be held to a minimum, and as close as
45、practical to the sizeof the scrap tray opening.7.10 Access Door(s)Access door(s) shall be provided for ease of machine clean-out. The door(s) shall be constructed of notless than 0.044 in. (1.1 mm) corrosion-resistant steel, or other corrosion resisting material, and shall be rigid and stiffened asn
46、ecessary. Door safety catch(es) shall be provided for maximum operator safety, the door handles shall be of insulated handledesign. Doors shall be splashproof, and their exposed edges shall be smooth and formed to prevent canting, or warping. One doorassembly shall be furnished for each tank.7.11 Le
47、gs (Feet)The machine shall be rigidly constructed and have four or more legs (feet) made of corrosion-resisting steel,or other corrosion resisting material. Legs shall be adjustable, so that the height of the track may be varied from 34 to 35 in. (863.6to 889 mm) above the floor.7.12 Pump and Motor
48、Assemblies:7.12.1 AssembliesThe pump and motor assembly shall be mounted on the tank or on a rigid steel base. Rotary seals shall beprovided for pump shafts and shall be removable for servicing.7.12.2 PumpPump casings shall be cast iron or corrosion-resisting material (see Specification A436) and sh
49、all have aremovable cover or inspection plate, or be of such a design as to permit ease of accessibility for inspection and removal of foreignitems from the impeller and interior. The pump shall either be self-draining or equipped with means for draining. The shaft shallbe of corrosion-resisting steel, properly aligned and supported. The impeller shall be corrosion-resisting material or iron alloy andshall be in dynamic balance. The pump shall have at least two ball or roller bearings, except when the pump and motor are mountedo
