ASTM F860-96

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: F 860 – 96
Standard Specification for
Hot Water Sanitizing Commercial Dishwashing Machines,
Multiple Tank, Rackless Conveyor Type
This standard is issued under the fixed designation F 860; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope F 760 Specification for Food Service Equipment Manuals
2.2 Federal Regulation:
1.1 This specification covers multiple tank, automatic rack-
OSHA Title 29
less conveyor type, commercial dishwashing machines.
2.3 American National Standards:
1.2 The values stated in inch-pound units are to be regarded
ANSI S1.4 Specification for Sound Level Meters
as the standard. The SI values given in parentheses are
ANSI S1.13 Methods for the Measurement of Sound Pres-
provided for information only.
sure Levels
2. Referenced Documents 2.4 National Electrical Manufacturers Association Stan-
dards:
2.1 ASTM Standards:
NEMA ICS Industrial Controls and Systems
A 29 Specification for Steel Bars, Carbon and Alloy, Hot-
NEMA MG-1 Motor and Generators
Wrought and Cold-Finished, General Requirements for
2.5 National Fire Protection Association Standard:
A 120 Specification for Pipe, Steel, Black and Hot-Dipped,
NFPA No. 70 National Electrical Code
Zinc Coated (Galvanized) Welded and Seamless, for Or-
2.6 NSF International Standards, Criteria, and Listings:
dinary Uses
NSF 3 Spray Type Dishwashing Machines
A 167 Specification for Stainless and Heat-Resisting
NSF 5 Commercial Hot Water Generating Equipment
Chromium-Nickel Steel Plate, Sheet, and Strip
NSF 29 Detergent/Chemical Feeders For Commercial Spray
A 276 Specification for Stainless and Heat-Resisting Steel
Type Dishwashing Machines
Bars and Shapes
NSF 51 Plastic Materials and Components Used in Food
A 436 Specification for Austenitic Gray Iron Castings
Equipment
A 554 Specification for Welded Stainless Steel Mechanical
NSF Criteria C-2 Special Equipment and/or Devices
Tubing
NSF Food Equipment and Related Products, Components,
A 582 Specification for Free-Machining Stainless and Heat-
and Materials
Resisting Steel Bars, Hot-Rolled or Cold-Finished
2.7 Underwriters Laboratories Standard:
B 43 Specification for Seamless Red Brass Pipe, Standard
UL 921 Commercial Electric Dishwashers
Sizes
2.8 American Society of Sanitary Engineering Standards:
B 75 Specification for Seamless Copper Tube
ASSE S1001 Pipe Applied Atmospheric Vacuum Breakers
B 127 Specification for Nickel-Copper Alloy (UNS NO
ASSE S1004 Dishwashers
4400) Plate, Sheet, and Strip
Annual Book of ASTM Standards, Vol 15.07.
Code of Federal Regulations, Chapter XVII, Part 1910, available from
Superintendent of Documents, Government Printing Office, Washington, DC 20402.
1 11
This specification is under the jurisdiction of ASTM Committee F-26 on Food Available from American National Standards Institute, 11 W. 42nd St., 13th
Service Equipment and is the direct responsibility of Subcommittee F26.01 on Floor, New York, NY 10036.
Cleaning and Sanitation Equipment. Available from National Electrical Manufacturers Assn., 2101 “L” Street,
Current edition approved May 10, 1996. Published August 1996. Originally N.W., Washington, DC 20037.
published as F 860 – 84. Last previous edition F 860 – 90. Available from National Fire Protection Assn., Batterymarch Park, Quincy,
Annual Book of ASTM Standards, Vol 01.05. MA 02269.
3 14
Discontinued, see 1986 Annual Book of ASTM Standards, Vol 01.01. Available from NSF International, P.O. Box 130140, Ann Arbor, MI 48113-
Annual Book of ASTM Standards, Vol 01.03. 0140.
5 15
Annual Book of ASTM Standards, Vol 01.02. Available from Underwriters Laboratories, Inc., 333 Pfingsten Road, North-
Annual Book of ASTM Standards, Vol 01.01. brook, IL 60062.
7 16
Annual Book of ASTM Standards, Vol 02.01. Available from American Society of Sanitary Engineering, P. O. Box 9712,
Annual Book of ASTM Standards, Vol 02.04. Bay Village, OH 44140.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
F 860
3. Terminology 5.1.4 Noise level requirements, if other than specified (see
11.2),
3.1 Definition:
5.1.5 When a service-supply valve is required (see 7.5),
3.1.1 commercial dishwashing machines—machines that
5.1.6 When a standard 40°F (22°C) temperature rise steam
uniformly wash, rinse, and hot water-sanitize eating and
or electric, or gas booster is required, or stipulate if the required
drinking utensils. The machines shall be capable of removing
temperature rise is more than 40°F (22°C) (see 7.14),
physical soil from properly pre-scraped items, and sanitizing
5.1.7 Electrical power supply characteristics (current, volt-
multiple use eating and drinking utensils. These machines shall
age, phase, frequency) (see Section 8),
automatically convey soiled dishes through the treatment
5.1.8 When a detergent feeder is required (see 7.15),
stages of the machine, conveying them out at the clean end of
5.1.9 When a rinse agent feeder is required (see 7.16),
the machine. The dishwashing machines shall consist of the
5.1.10 Accessory equipment, such as end cowls with vent
following principal parts: legs, wash chamber, rinse chamber,
opening, or spare and maintenance parts required, as suggested
tank, door, spray assemblies, pump motors, controls, piping,
by manufacturer,
valves, conveying mechanism, heating equipment, and acces-
5.1.11 Treatment and painting if other than specified (see
sories.
Section 10),
5.1.12 When energy consumption profiles, water consump-
4. Classification
tion profiles, or productivity profiles are desired (see 12.3), and
4.1 General—Dishwashing machines shall be of the follow-
5.1.13 Manufacturing certification when required (see Sec-
ing types, styles, classes, and groups, as specified.
tion 13).
4.2 Types:
4.2.1 Type I—This machine shall be designed and supplied
6. Materials and Design
to accept the feeding of soiled tableware from the right side,
6.1 All materials shall be specified as follows:
when facing the front of the machine.
6.1.1 Materials used shall be free from defects which would
4.2.2 Type II—This machine shall be designed and supplied
adversely affect performance or maintainability of individual
to accept the feeding of soiled tableware from the left side,
component of the overall assembly. The dishwashing machines
when facing the front of the machine.
shall meet the material design and construction requirements of
4.3 Styles and Classes:
NSF 3, and Criteria C-2, where applicable.
4.3.1 Style 1 (Steam Heated)—Low pressure steam 10 to 15
6.1.2 Corrosion-Resistant Steel—Corrosion-resistant steel
psi (68.9 to 103.4 kPa) flowing pressure at point of machine
shall conform to the requirements of any 300 series stainless
connection.
steel specified in 2.1.
4.3.1.1 Class A—Injectors.
6.1.3 Corrosion Resisting Material—Corrosion resisting
4.3.1.2 Class B—Heat exchange coils.
material is other than corrosion resistant steel that is equivalent
4.3.2 Style 2 (Electrically heated).
in the dishwasher application.
4.3.3 Style 3 (Gas heated).
6.1.4 Nickel-Copper Alloy—Nickel-Copper alloys shall
4.3.3.1 Class C—Natural gas.
conform to the requirements of Specification B 127.
4.3.3.2 Class D—LP gas.
6.1.5 Plastics—All plastic materials and components used
4.4 Size and Capacity (see Specification F 861).:
in the dishmachine rinse system shall conform to NSF
4.4.1 Group A—Minimum conveyor width 22.5 in. (571.5
3 and 51.
mm) with an operating capacity of 5000 dishes per hour
minimum. 7. Construction Requirements
4.4.2 Group B—Minimum conveyor width 26.5 in. (673.1
7.1 The dishwashing machine shall be complete so that
mm) with an operating capacity of 8700 dishes per hour
when connected to the specified source of power, water supply,
minimum.
heating means (steam, electric, or gas), drainage, detergent,
4.4.3 Group C—Minimum conveyor width 31 in. (787 mm)
and rinse agent feeder as applicable, the unit can be used for its
with an operating capacity of 11800 dishes per hour minimum.
intended function. Dishwashers shall be rigid, quiet in opera-
4.5 All dishwashing machines of the same classification,
tion, free from objectionable vibration, and so constructed as to
model, or material list designation furnished with similar
prevent objectionable splashing of water to the outside of the
options under a specific purchase order; shall be identical to the
machine. The machine shall be equipped with splash curtains
extent necessary to ensure interchangeability of component
to prevent excessive splash and spray carryover. Parts requiring
parts, assemblies, accessories, and spare parts.
adjustment or service, or both, shall be readily accessible from
the front and side of the machine. The machine shall be
5. Ordering Information
furnished with a loading and unloading section. The machine
5.1 Purchasers should select the preferred options permitted shall wash dishes by means of a water and detergent solution
in this specification and include the following information in
pumped from a tank and shall pump rinse the dishes under
procurement documents: pump pressure prior to the final rinse of fresh water from an
5.1.1 Title, number, and date of this standard, outside source. Provisions shall be made to fill the wash and
5.1.2 Type, style, class, and group machine required (see rinse tank either directly from the regular hot water supply with
4.1), a hand valve or through the booster or solenoid, or both. The
5.1.3 Length of load and unload sections (see 4.4), dishwashing machine shall have a conveyor belt suitable for
F 860
handling eating and drinking utensils, the conveyor belt shall the use of tools and shall be easily cleanable or easily cleanable
be protected by an adjustable slip clutch or other device. Means in place.
shall be provided for releasing or disconnecting the driving
7.7 Tank—The tank shall be constructed of not less than
power, or the drive, in case of jamming. The conveyor belt
0.055 in., corrosion-resistant steel, or other corrosion-resisting
shall be driven by a motor driven gear reduction unit. The
material.
wash, pumped rinse, and final rinse treatment shall be con-
7.8 Overflow—The dishwashers shall have a readily acces-
trolled by means of the conveyor speed as determined by NSF
sible overflow drain in the tank. The overflow unit, or cover,
3 for multiple tank conveyor type machines. The final rinse
when provided, shall be readily removable for cleaning.
spray control shall have a positive return to the “off” position
7.9 Scrap Trays (Strainers)—Scrap trays of corrosion-
when there is no tableware in process to ensure the conserva-
resistant steel, not less than 0.044 in. thick, or other corrosion-
tion of final rinse water. The machine shall be provided with
resisting material shall be provided to prevent insoluble matter
tracks of corrosion-resisting steel not less than 0.070 in. thick,
and large pieces of food residue from passing into the tank. The
or other corrosion-resisting material. Dishwashers shall have
ledges on which the scrap trays rest shall be so designed that
an inside working height of not less than 17 ⁄2 in. (444.5 mm).
surfaces beneath the ledges are easily accessible for cleaning
7.2 Conveyor Belt—The conveyor belt shall be of heavy
when the trays are removed. Any opening around or between
duty construction adequately supported for added strength and
scrap trays shall be held to a minimum, and as close as
rigidity. The conveyor belt shall be constructed of a suitable
practical to the size of the scrap tray opening.
corrosion-resistant steel or corrosion-resisting material. The
7.10 Access Door(s)—Access door(s) shall be provided for
upright portion of the belt may be of corrosion-resistant steel or
ease of machine cleanout. The door(s) shall be constructed of
corrosion resisting material. When dishware contact surfaces
not less than 0.044 in. thick corrosion-resistant steel, or other
occur, a non-metallic, non-marking material shall be utilized. It
corrosion resisting material, shall be rigid and stiffened as
shall be designed to accept dishes, cup and glass racks when
necessary. Door safety catch(es) shall be provided for opening
used and food service utensils. The conveyor will automati-
the door during operation, shall automatically stop if the
cally stop if the operator should fail to remove sanitized items
machine is in operation at the time the access doors are opened.
from the conveyor belt at the unload end.
For maximum operator safety, the door handles shall be of
7.3 Piping, Tubing, Fittings, and Valves (Installation)— insulated handle design. Doors shall be splash-proof and their
Connections shall be readily accessible to facilitate installation exposed edges shall be smooth and formed to prevent canting
and maintenance. Piping, tubing, and valves shall be located, or warping. One door assembly shall be furnished for each
whenever possible, on the exterior of the machine. See tank.
Specifications A 29, A 120, A 167, A 276, A 554, B 43, and
7.11 Legs (Feet)—The machine shall be rigidly constructed
B 75.
and have four or more legs (feet) made of corrosion-resisting
material or other corrosion-resisting material. Legs shall be
7.4 Piping and Fittings—Water, steam piping, and fittings
adjustable, so that the height of the track may be varied from
shall be of corrosion resisting material. Fresh water supply to
34 to 35 in. (863.6 to 889 mm) above the floor.
the tank shall be discharged not lower than 2 in. (50.8 mm)
above the maximum flood level rim, or an effective air gap or 7.12 Pump and Motor Assemblies:
vacuum breaker shall be installed to prevent backflow. Back-
7.12.1 Assemblies—The pump and motor assembly shall be
flow protection shall be in accordance with ASSE 1004. The
mounted on the tank or on a rigid steel base. Rotary seals shall
drain and other plumbing connections shall be standard pipe or
be provided for pump shafts and shall be removable for
tubing connections. Drainage piping shall be corrosion-
servicing.
resisting material, or suitable heat-resisting plastic tubing with
7.12.2 Pump (see Specification A 436)—Pump casings shall
fittings. Drains may be joined into a single trunk line requiring
be cast iron or corrosion-resisting material and shall have a
only one connection or arranged to permit individual connec-
removable cover or inspection plate, or be of such a design as
tions to the waste line.
to permit acc
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