1、Designation: F859 09F859 15 An American National StandardStandard Specification forHeat-Sanitizing Commercial Dishwashing Machines, MultipleTank, Conveyor Rack Type1This standard is issued under the fixed designation F859; the number immediately following the designation indicates the year of origin
2、aladoption 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.S. Department of Defe
3、nse.1. Scope1.1 This specification covers multiple 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 mathematicalconversions to SI units that are provided for information only and are
4、 not considered standard.2. Referenced Documents2.1 ASTM Standards:2A167A240/A240M Specification for StainlessChromium and Heat-Resisting Chromium-Nickel Stainless Steel Plate, Sheet, andStrip for Pressure Vessels and for General Applications (Withdrawn 2014)B127 Specification for Nickel-Copper Allo
5、y (UNS N04400) Plate, Sheet, and StripF760 Specification for Food Service Equipment ManualsF861 Specification for Commercial Dishwashing RacksF1920 Test Method for Performance of Rack Conveyor, Commercial Dishwashing Machines2.2 Federal Regulation:OSHA Title 2932.3 NSF International Standards:NSF/AN
6、SI 3 Commercial Warewashing Equipment4NSF/ANSI 5 Commercial Hot Water Generating Equipment4NSF/ANSI 14 Plastic Piping System Components and Related Materials4NSF/ANSI 29 Detergent/Chemical Feeders for Commercial Spray-Type Dishwashing Machines4NSF/ANSI 51 Food Equipment Materials4NSF Listings-Food E
7、quipment42.4 Underwriters Laboratories Standard:UL 921 Commercial Electric Dishwashers52.5 American Society of Sanitary Engineering ASSE International Standards:ASSE 1004 Dishwashers62.6 Military Standard:MIL-STD-129 Marking for Shipment and Storage73. Terminology3.1 Definitions:1 This specification
8、 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 Oct. 1, 2009Aug. 1, 2015. Published October 2009September 2015. Originally approved in 1984. Last previous e
9、dition approved in 20042009as F859 04.F859 09. DOI: 10.1520/F0859-09.10.1520/F0859-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary
10、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 International, P.O. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48113-0140.5 Available from Underwriters
11、 Laboratories (UL), Corporate Progress, UL LLC, 333 Pfingsten Rd., Northbrook, IL 60062.6 Available from ASSE International, 901 Canterbury, Suite A, Westlake, OH 44145.18927 Hickory Creek Drive, Suite 220, Mokena, IL 60448.7 Available from Standardization Documents Order Desk, Bldg. 4 Section D, 70
12、0 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.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 previous version. Becauseit may not be technically possible to adequately depict all changes
13、 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 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unite
14、d States13.1.1 commercial dishwashing machinesmachines that uniformly wash, rinse, and heat sanitize eating and drinking utensils.The machines shall be capable of removing physical soil from properly racked and pre-scrapped items, and sanitizing multiple-useeating and drinking utensils. These machin
15、es shall automatically convey racks of soiled dishes through the treatment stages of themachine, conveying them out at the clean end of the machine. The dishwashing machines shall consist of the following principalparts: legs, wash chamber, rinse chamber, tanks, doors, spray assemblies, pumps, motor
16、s, controls, piping, valves, conveyingmechanisms, heating equipment, and accessories.4. Classification4.1 GeneralDishwashing machines shall be of the following types, styles, classes, sizes, and capacity groups, as specified.4.2 Types:4.2.1 Type IThis machine shall be designed and supplied to accept
17、 the feeding of soiled tableware from the right side, whenfacing 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)Low-
18、pressure steam (20 to 35 psi) (137.9 to 241.3 kPa) flowing pressure at point of machineconnection.4.3.1.1 Class AInjectors.4.3.1.2 Class BHeat exchange coils.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 Style 4 (Pre-Wash Unit)The d
19、ishwashing machine shall have a pump recirculated prewash unit. The automatic prewashunit shall be fitted to, or be a part of the dishwashing machine.4.5 Size and Capacity,4.5.1 Group A1934 by 1934-in. (501.6 by 501.6 mm) (nominal) racks at 100 per hour minimum.4.5.2 Group B1934 by 1934-in. (501.6 b
20、y 501.6 mm) (nominal) racks at 234 per hour minimum.4.5.3 Group C1934 by 1934-in. (501.6 by 501.6 mm) (nominal) racks at 330 per hour minimum.4.6 All dishwashing machines of the same classification, model, or material list designation furnished with similar options undera specific purchase order sha
21、ll 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 information in theprocurement document:
22、5.1.1 Title, number, and date of this specification,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 7.5),5.1.5 When a standard 40F (22C) temperature rise steam, electr
23、ic, or gas booster is required, or stipulate if the requiredtemperature rise is more than 40F (22C) (see 7.14),5.1.6 Electrical power supply characteristic (current, voltage, phase, frequency) (see Section 8),5.1.7 When a detergent feeder is required (see 7.15),5.1.8 When a rinse agent feeder is req
24、uired (see 7.16),5.1.9 Accessory equipment, such as end cowls with vent opening, or spare and maintenance parts required, as suggested by themanufacturer,5.1.10 Treatment and painting if other than specified (see Section 10),5.1.11 When energy consumption profiles, water consumption profiles, or pro
25、ductivity profiles are desired (see 12.3), and5.1.12 Manufacturers certification, when required (see Section 13).6. Materials and Design6.1 All materials shall be specified as follows:6.1.1 Materials used shall be free from defects that would adversely affect the performance or maintainability of in
26、dividualcomponents of the overall assembly. The dishwashing machines shall meet the material design and construction requirements ofNSF/ANSI 3, where applicable.F859 1526.1.2 Corrosion-Resistant SteelCorrosion resistant steel shall conform to the requirements of any 200, 300, or 400 seriesstainless
27、steel specified 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 AlloyNickel-copper alloys shall conform to the requirements of Specification B127.6.1.5 PlasticsAll plasti
28、c materials and components used in the dishwashing machine rinse system shall conform to NSF/ANSI14 or NSF/ANSI 51.7. Construction Requirements7.1 The dishwashing machine shall be complete so that when connected to the specified source of power, water supply, heatingmeans (steam, electric, or gas),
29、and 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 splashing of water to the outside of the machine.The machine shall be equipped with splash curtains to prevent excessiv
30、e splash and spray carryover. Parts requiring adjustmentor service, or both, shall be readily accessible from the front and side of the machine. The machine shall wash dishes by meansof a water and detergent solution pumped from a tank and shall pump rinse the dishes under pump pressure prior to the
31、 final rinseof fresh water from an outside source. The final rinse spray may be pumped or fresh water rinse. Provisions shall be made to fillthe wash and rinse tank either directly from the regular hot water supply or through the booster, or both. The fill shall be controlledwith a hand valve or thr
32、ough the booster or solenoid, or both. The dishwashing machine shall have a conveyor for handling 1934by 1934-in. (501.6 by 501.6 mm) (nominal) racks. The conveyor shall be protected by an adjustable slip clutch or other equivalentdevice. Means shall be provided for releasing or disconnecting the dr
33、ive power, or the drive in case of jamming. The conveyorshall be driven by a separate motor driven gear reduction unit. The final rinse spray control shall have a positive return to the OFFposition when there are no racks in process to ensure the conservation of final rinse water. The machine shall
34、be provided withtracks of corrosion-resistant steel or other corrosion-resisting material not less than 0.070 in. (1.8 mm) or equivalent die-formedmaterial of 0.059 in. (1.5 mm). Dishwashers shall have an inside working height of not less than 1712 in. (444.5 mm) above thetrack.7.2 ConveyorThe conve
35、yor 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 (Installation)Connections shall be readily accessible to facilitate insta
36、llation andmaintenance. Piping, tubing, and valves shall be located, whenever possible, on the exterior of the machine.7.4 Piping and FittingsWater and steam piping and fittings shall be of corrosion-resisting material. Fresh water supply to thetank shall be discharged not lower than 2 in. (50.8 mm)
37、 above the maximum flood level rim, or an effective air gap or vacuumbreaker shall be installed to prevent backflow. Backflow protection shall be in accordance with ASSE No. 1004. The drain andother plumbing connections shall be standard pipe or tubing connections. Drainage piping shall be corrosion
38、-resisting material, orsuitable heat-resisting plastic tubing with fittings. Drains may be joined into a single trunk line requiring only one connection orarranged to permit individual connections to the waste line.7.5 ValvesSteam valves shall be corrosion-resisting material designed for steam appli
39、cations and for a saturated steamworking pressure of 50 psi (345 kPa). When specified, a separately packed service supply valve shall be provided for closing thesupply of water to the dishwasher. The drain valve shall be permanently marked to show “open” and “closed” position and shallbe lever-opera
40、ted or wheel-operated, ruggedly designed for foot or hand operation except when drain valve closure is automatic.Fresh water rinse valves shall be reliable and fully automatic and suitable for 210F (98.9C) water. The manually operated valves,when used, shall be identified.7.6 Spray AssembliesAll spr
41、ay nozzles and spray arm manifolds shall be corrosion-resisting materials. All spray assembliesshall be removable without the use of tools and shall be easy to clean. Final sanitizing rinse spray assemblies or components, orboth, shall be removable for deliming, descaling, and similar maintenance.7.
42、7 TankThe tank shall be constructed of not less than 0.050 in. (1.3 mm) thick corrosion-resistant steel, Type 302, inaccordance with Specification A167A240/A240M, or other corrosion-resisting material.7.8 OverflowThe dishwashers shall have a readily accessible overflow drain in the tank. The overflo
43、w unit, or cover, whenprovided, shall be readily 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 othercorrosion-resistant material shall be provided to prevent insoluble matter and large pieces of food residue fro
44、m passing into thetank.The ledges on which the scrap trays rest shall be so designed that surfaces beneath the ledges are easily accessible for cleaningwhen the trays are removed. Any opening around or between scrap trays shall be held to a minimum, and as close as practical tothe size of the scrap
45、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) of corrosion-resistant steel or other corrosion-resisting material, shall be rigid and stiffened asF859 153necessary. Door safety catch(
46、s) shall be provided for maximum operator safety on sliding doors. Doors shall be splashproof andtheir exposed edges shall be smooth and formed to prevent canting or warping. One door assembly shall be furnished for each tank.Acommon door may be furnished for adjacent tanks, if such door is of suffi
47、cient width to provide the required access. Doors shallbe provided with an interlock mechanism to prevent the spray of wash or rinse water when the door is opened.7.11 Legs (Feet)The machine shall be rigidly constructed and have four or more legs (feet) made of corrosion-resistant steel,or other cor
48、rosion-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 Assemblies:7.12.1 AssembliesThe pump and motor assembly shall be mounted on the tank or on a rigid steel base. Rotary seals shall
49、beprovided for pump shafts and shall be removable for servicing.7.12.2 PumpPump casings shall be cast iron or corrosion-resisting material and shall have a removable cover or inspectionplate, or be of such a design as to permit ease of accessibility for inspection and removal of foreign items from the impeller andinterior. The pump shall either be self-draining or equipped with means for draining. The shaft shall be of corrosion-resistant steel,properly aligned and supported. The impeller shall be corrosion-resisting material or iro
