1、Designation: F1237 09F1237 15 An American National StandardStandard Specification forCommercial Dishwashing Machines, Multiple-Tank,Continuous Oval-Conveyor Type, Heat Sanitizing1This standard is issued under the fixed designation F1237; the number immediately following the designation indicates the
2、 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.This standard has been approved for use by agencies of the U.S.
3、 Department of Defense.1. Scope1.1 This specification covers commercial multiple-tank dishwashing machines of the continuous type, oval shaped, withhorizontal table conveyor systems.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathemat
4、icalconversions to SI units that are provided for information only and are not considered standard.1.3 The following safety hazards caveat pertains only to Section 12, Test Methods, of this specification: This standard does notpurport to address all of the safety concerns, if any, associated with it
5、s use. It is the responsibility of the user of this standard toestablish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A167A240/A240M Specification for StainlessChromium and Heat-Resisting Chr
6、omium-Nickel Stainless Steel Plate, Sheet, andStrip for Pressure Vessels and for General Applications (Withdrawn 2014)B127 Specification for Nickel-Copper Alloy (UNS N04400) Plate, Sheet, and StripF760 Specification for Food Service Equipment ManualsF861 Specification for Commercial Dishwashing Rack
7、sF1920 Test Method for Performance of Rack Conveyor, Commercial Dishwashing Machines2.2 Federal Regulations:3OSHA Title 292.3 NSF International Standards:4NSF/ANSI 3 Commercial Warewashing EquipmentNSF/ANSI 5 Commercial Hot Water Generating Equipment5NSF/ANSI 14 Plastic Piping System Components and
8、Related MaterialsNSF/ANSI 29 Detergent/Chemical Feeders for Commercial Spray-Type Dishwashing MachinesNSF/ANSI 51 Food Equipment MaterialsNSF ListingsFood Equipment2.4 Underwriters Laboratories Standard:6UL 921 Commercial Electric Dishwashers2.5 American Society of Sanitary Engineering Standards:ASS
9、E International:7ASSE 1004 Dishwashers1 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 Oct. 1, 2009Aug. 1, 2015. Published October 2009Se
10、ptember 2015. Originally approved in 1989. Last previous edition approved in 20042009as F1237 04.F1237 09. DOI: 10.1520/F1237-09.10.1520/F1237-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standards
11、volume information, refer to the standards Document Summary page on the ASTM website.3 Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.4 Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., Ann
12、 Arbor, MI 48113-0140.5 NSF /ANSI 5 applies only if a booster heater is furnished.6 Available from Underwriters Laboratories (UL), Corporate Progress, UL LLC, 333 Pfingsten Rd., Northbrook, IL 60062.7 Available from ASSE International, 901 Canterbury, Suite A, Westlake, OH 44145.18927 Hickory Creek
13、Drive, Suite 220, Mokena, IL 60448.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 accurately, ASTM reco
14、mmends 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. United States12.6 Military
15、Standard:8MIL-STD-129 Marking for Shipment and Storage3. Terminology3.1 Definitions:3.1.1 commercial dishwashing machinesmachines that uniformly wash, rinse, and heat sanitize eating and drinking utensils.3.1.1.1 DiscussionThe machines shall be capable of removing physical soil from properly racked
16、and prescrapped items, and sanitizing multiple-useeating and drinking utensils. The dishwashing machine and conveyor-table, when assembled, shall form an oval-shaped dishhandling system. The machines shall automatically convey racks of soiled dishes through the treatment stages of the machine,convey
17、ing them out to the clean dish removal area of the conveyor. The dishwashing machines shall consist of the followingprincipal parts: legs, recirculating pre-wash chamber, wash chamber, rinse chamber, tanks, doors, spray assemblies, pumps, motors,controls, piping, valves, conveying mechanisms, horizo
18、ntal conveyor tables, heating equipment, and accessories.4. Classification4.1 GeneralDishwashing machines shall be of the types, styles, classes, arrangement, sizes, and capacity groups, as specifiedin 4.2 4.6.4.2 Types:4.2.1 Type I-CW (clockwise) Rotation This machine shall be designed and supplied
19、 to accept the feeding of soiled tablewarefrom the right side, when viewed from above.4.2.2 Type II-CCW (counterclockwise) RotationThis machine shall be designed and supplied to accept the feeding of soiledtableware from the left side, when viewed from above.4.3 Styles and Classes:4.3.1 Style 1 (Ste
20、am Heated)Low-pressure steam 20 to 35 psi (137.9 to 241.3 kPa) flowing pressure at point of machineconnection.4.3.1.1 Class AStyle 1 dishwashing machine that uses steam injectors.4.3.1.2 Class BStyle 1 dishwashing machine that uses heat exchange steam coils.4.3.2 Style 2 (Electrically Heated).4.3.3
21、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 dishwashing 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 Arrangement:4.5.1 Arrangement AWith tray rail
22、 and table-mounted garbage disposal machine.4.5.2 Arrangement BWith food waste trough instead of tray rail; garbage disposal machine in center of trough.4.5.3 Arrangement CSame as Arrangement A, except disposal unit not furnished; food discharged to garbage can at disposallocation.4.5.4 Arrangement
23、DSame as Arrangement B, except disposal unit not furnished; food discharged to garbage can at disposallocation.4.6 Capacity240 racks per hour minimum, 19-34 by 19-34 in. (501.6 by 501.6 mm) (nominal) or equivalent meeting capacityrequirement.5. Ordering Information5.1 Purchasers should select the pr
24、eferred options permitted in this specification and include the information in 5.1.1 and 5.1.2in the procurement document.5.1.1 Title, designation number, and date of this specification.5.1.2 Type, style, class, and arrangement required (see 4.1),5.1.3 Noise level requirements, if other than specifi
25、ed (see 11.2),5.1.4 Whether a service-supply valve is required (see 7.5),5.1.5 Whether a standard 40F (22C) temperature rise steam or electric booster is required, or stipulate if the requiredtemperature rise is more than 40F (22C) (see 7.14),8 Available from Standardization Documents Order Desk, DO
26、DSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098F1237 1525.1.6 Electrical power supply characteristics (current, voltage, phase, frequency) (see Section 8),5.1.7 Whether a detergent feeder is required (see 7.15),5.1.8 Whether a rinse agent feeder is required (see 7.16),5.1.9 A
27、ccessory equipment required, such as end cowls with vent openings, or spare and maintenance parts 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 productivity profiles are d
28、esired (see 12.3).5.1.12 Manufacturers certification, when required (see Section 13),5.1.13 Whether a flatware soak sink is required (see 7.16).6. Materials6.1 All materials shall be specified as follows:6.1.1 Materials used shall be free from defects that would affect the performance or maintainabi
29、lity of individual componentsof the overall assembly. The dishwashing machines shall meet the material design and construction requirements of NSF/ANSI3.6.1.2 Corrosion-Resistant SteelCorrosion-resistant steel shall conform to the requirements of any 200, 300, or 400 seriesstainless steel.6.1.3 Corr
30、osion-Resisting MaterialCorrosion-resisting material is material other than corrosion-resistant steel that isequivalent in the dishwasher application.6.1.4 Nickel-Copper AlloyNickel-copper alloy shall conform to the requirements of Specification B127.6.1.5 PlasticsAll plastic materials and component
31、s used in the dishwashing rinse system shall conform to NSF/ANSI 14 orNSF/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 or electric) and drainage, detergent and rinse agent
32、feeder as applicable, the unit can be used for its intended function.Dishwashers shall be quiet in operation, free from objectionable splashing of water to the outside of the machine. The machineshall be equipped with splash curtains to prevent excessive splash and spray carryover. Parts requiring a
33、djustment or service, orboth, shall be readily accessible from the front and side of the machine. The machine shall wash dishes by means of a water anddetergent solution pumped from a tank and shall pump rinse the dishes under pump pressure prior to the final rinse of fresh waterfrom an outside sour
34、ce. Provisions shall be made to fill the wash and rinse tank either directly from the regular hot water supplywith a hand valve or through the booster or solenoid, or both, provided the water temperatures comply with the provisions ofNSF/ANSI 3. The dishwashing machine shall have a conveyor for hand
35、ling 19-34 by 19-34 in. (501.6 by 501.6 mm) (nominal)racks, or equivalent meeting capacity requirement. The conveyor shall be protected by an adjustable slip clutch or other device.Means shall be provided for releasing or disconnecting the drive power, or the drive in case of jamming. The conveyor s
36、hall bedriven by a separate motor. The final rinse spray control shall have a positive return to the OFF position when there are no racksin process to ensure the conservation of final rinse water. The machine shall be provided with tracks of corrosion-resistant steelor other corrosion-resisting mate
37、rial not less than 0.070 in. (1.78 mm) or equivalent die formed, not less than 0.059 in. (1.5 mm)thick. Dishwashers shall have an inside working height of not less than 17.5 in. (444.5 mm) above the track.7.2 ConveyorThe conveyor shall be of heavy-duty construction, and of suitable corrosion-resisti
38、ng material. It shall bedesigned to convey racks conforming to Specification F861 through the dishwasher automatically.7.2.1 Conveyor Clutch SystemAn automatic trouble free clutch system, springloaded,spring-loaded, or adjustable slip clutch,and of the automatic re-engaging type, shall be furnished
39、to shut down the conveyor in case of a jam or other mechanicalmalfunction(s).7.2.2 Conveyor Table(s)The conveyor table shall be constructed of not less than 0.070 in. thick (1.78 mm) corrosion-resistantsteel or other corrosion-resisting material. The legs shall be preassembled with suitable cross br
40、acing and shall be furnished withNSF certified adjustable feet. The table shall include a mechanical conveyor system designed to continuously transfer dishes orracks at the rate of 6 to 8 ft/min (1.8 to 2.4 m/min). The conveyor tables shall be furnished in the arrangement selected (see 4.5).The conv
41、eyor table shall be sectioned for shipment.7.3 Piping, Tubing, Fittings, and Valves (Installation)Connections shall be readily accessible to facilitate installation andmaintenance. Piping, tubing, and valves shall be located, when ever possible, on the exterior of the machine.7.3.1 Piping and Fittin
42、gsWater, 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) above the maximum flood level rim, or an effective air gap or vacuumbreaker shall be installed to prevent backflow. Backflow protection shall
43、 be in accordance with ASSE No. 1004. The drain andother plumbing connections shall be standard pipe or tubing connections. Drainage piping shall be corrosion-resisting material, orsuitable heat-resisting plastic tubing with fittings. Drains may be joined into a single trunk line requiring only one
44、connection orarranged to permit individual connections to the waste line.F1237 1537.3.2 ValvesWhen specified, steam valves shall be of corrosion-resisting material designed for steam applications and for asaturated steam working pressure of 50 psi (345 kPa). When specified, a separately packed servi
45、ce supply valve shall be providedfor closing the supply of water to the dishwasher. The drain valve shall be permanently marked to show open and closed positionand shall be lever-operated or wheel-operated, ruggedly designed for foot or hand operation except when drain valve closure isautomatic. Fre
46、sh-water rinse valves shall be reliable and fully automatic and suitable for 210F (98.9C) water. The manuallyoperated valves, when used, shall be identified.7.4 Spray AssembliesAll spray nozzles and spray arm manifolds shall be corrosion-resisting materials. All spray assembliesshall be removable wi
47、thout the use of tools and shall be easy to clean. Final sanitizing rinse spray assemblies, components, or bothshall be removable for deliming, descaling, and similar maintenance.7.5 TankThe tank shall be constructed of not less than 0.048 in. (1.219 mm) thick corrosion-resistant steel, Type 302 ina
48、ccordance with Specification A167A240/A240M.7.6 OverflowThe dishwasher shall have a readily accessible overflow drain in the tank. The overflow unit, or cover, whenprovided, shall be readily removable for cleaning.7.7 Scrap Trays (Strainers)Scrap trays of corrosion-resistant steel, not less than 0.0
49、48 in. (1.219 mm) thick in accordance withSpecification A167A240/A240M shall be provided to prevent insoluble matter and large pieces of food residue from passing intothe tank. The ledges on which the scrap trays rest shall be so designed that surfaces beneath the ledge are easily accessible forcleaning when the trays are removed. Any opening around or between scrap trays shall be held to a minimum, and as close aspractical to the size of the scrap tray opening.7.8 Access Door(s)Access door(s) shall be provided for ease of machine
