ASTM F1360-93(1999)
(Specification)Standard Specification for Ovens, Microwave, Electric
Standard Specification for Ovens, Microwave, Electric
SCOPE
1.1 This specification covers commercial microwave ovens. These ovens use ultrahigh frequency electromagnetic radiation in the approved industrial, scientific, and medical bands to defrost, heat, and cook food.
1.2 Limitations -This specification does not include all types, sizes, groups, styles, and classes of the commodities indicated by the titles of the specification, or that are commercially available, but is intended to cover the types, sizes, groups, styles, and classes that are suitable for general requirements.
1.3 Oven Selection And Application -Prior to the use of the classifications given in 4.1, the user agency should ensure they are not restricted by some aspect of the microwave oven design such as a weight or external dimension limitation that would prevent the unrestricted use of the classifications given in 4.1.
1.4 Microwave Oven Availability -Although 4.1 lists a wide range of sizes, classes, groups, and styles for commercial types of ovens, not all combinations are available.
1.5 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.
1.6 The following precautionary caveat pertains to the test method portion only, Section 11, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
An American National Standard
Designation: F 1360 – 93 (Reapproved 1999)
Standard Specification for
Ovens, Microwave, Electric
This standard is issued under the fixed designation F1360; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 mium Steel Plate, Sheet, and Strip
A 240 Specification for Heat-Resisting Chromium and
1.1 This specification covers commercial microwave ovens.
Chromium-Nickel Stainless Steel Plate, Sheet, and Strip
These ovens use ultrahigh frequency electromagnetic radiation
for Pressure Vessels
in the approved industrial, scientific, and medical bands to
B108 Specification for Aluminum-Alloy Permanent Mold
defrost, heat, and cook food.
Castings
1.2 Limitations—This specification does not include all
B209 Specification for Aluminum and Aluminum-Alloy
types, sizes, groups, styles, and classes of the commodities
Sheet and Plate
indicated by the titles of the specification, or that are commer-
D3951 Practice for Commercial Packaging
cially available, but is intended to cover the types, sizes,
F760 Specification for Food Service Equipment Manuals
groups, styles, and classes that are suitable for general require-
2.2 ANSI Standards:
ments.
B1.1 Unified Inch Screw Threads (UN and UNR Thread
1.3 Oven SelectionAndApplication—Priortotheuseofthe
Form)
classifications given in 4.1, the user agency should ensure they
C62.41 GuideforSurgeVoltagesinLowVoltageAC-Power
arenotrestrictedbysomeaspectofthemicrowaveovendesign
Circuits
such as a weight or external dimension limitation that would
WD-6 Wiring Devices—Dimensional Requirements
prevent the unrestricted use of the classifications given in 4.1.
Z1.4 Sampling Procedures and Tables for Inspection by
1.4 Microwave Oven Availability—Although 4.1 lists a
Attributes
wide range of sizes, classes, groups, and styles for commercial
2.3 International Electrotechnical Commission Standard:
types of ovens, not all combinations are available.
Standard No. 705 Methods for Measuring the Performance
1.5 The values stated in inch-pound units are to be regarded
of Microwave Ovens for Household and Similar Pur-
as the standard. The SI units given in parentheses are for
poses
information only.
2.4 National Sanitation Foundation Standard:
1.6 The following precautionary caveat pertains to the test
StandardNo.4 CommercialCookingandHotFoodHolding
method portion only, Section 11, of this specification: This
Equipment
standard does not purport to address all of the safety concerns,
2.5 Underwriters Laboratories Standard:
if any, associated with its use. It is the responsibility of the user
Standard No. 923 for Microwave Cooking Appliances
of this standard to establish appropriate safety and health
2.6 Federal Standard:
practices and determine the applicability of regulatory limita-
FED-STD-123 Marking for Shipment (Civil Agencies)
tions prior to use.
2.7 Military Standards:
2. Referenced Documents MIL-STD-167-1 Mechanical Vibrations of Shipboard
Equipment
2.1 ASTM Standards:
A 167 Specification for Stainless and Heat-Resisting
Chromium-Nickel Steel Plate, Sheet, and Strip
Annual Book of ASTM Standards, Vol 02.02.
Annual Book of ASTM Standards, Vol 15.09.
A176 Specification for Stainless and Heat-Resisting Chro-
Annual Book of ASTM Standards, Vol 15.07.
Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036.
1 7
This specification is under the jurisdiction ofASTM Committee F-26 on Food Available from National Sanitation Foundation, 3475 Plymouth Rd., P.O. Box
Service Equipment and is the direct responsibility of Subcommittee F26.02 on 1468, Ann Arbor, MI 48106.
Cooking and Warming Equipment. AvailablefromUnderwritersLaboratories,Inc.333PfingstenRd.,Northbrook,
Current edition approved Dec. 15, 1993. Published February 1994. Originally
IL 60062.
1 9
published as F1360–91. Last previous edition F1360–91e . AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
Annual Book of ASTM Standards, Vol 01.03. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
F 1360 – 93 (1999)
MIL-V-173 Varnish, Moisture-and-Fungus Resistant (For 4.1.2.3 Size 1800—1800andgreaterwattmicrowavepower
TreatmentofCommunications,Electronic,andAssociated output.
Equipment) 4.1.3 Group:
3 3 3
MIL-STD-461 Requirements For The Control of Electro- 4.1.3.1 Group 1—0.5 to 0.8 ft (0.014 m to 0.0226 m )
magnetic Interference Emissions and Susceptibility
cooking cavity (minimum cooking cavity dimensions of 7.5
MIL-STD-462 Measurement of Electromagnetic Interfer- shall be met).
3 3
ence Characteristics
4.1.3.2 Group 2—Over 0.8 to 1.2 ft (0.0226 m to 0.034
MIL-STD-1399/300 Interface Standard for Shipboard Sys- m ) cooking cavity.
3 3 3
tems Section 300A Electric Power, Alternating Current
4.1.3.3 Group3—Over1.2to1.5ft (0.034m to0.042m )
MIL-E-17555 Electronic and Electrical Equipment, Acces- cooking cavity.
3 3
sories, and Provisioned Items (Repair Parts): Packaging
4.1.3.4 Group 4—Over 1.5 ft (0.042 m ) cooking cavity.
of
4.1.4 Style:
2.8 Federal Regulations:
4.1.4.1 Style 1—Dial type timer(s).
Title 21, Food and Drugs, Subchapter J—Radiological
4.1.4.2 Style 2—Digital timer and touchpad controls (com-
Health
puter controlled).
Title29, Labor,Chapter17,OccupationalSafetyandHealth
4.1.4.3 Style 3—Dial or pushbutton timer(s), or both.
Administration, Department of Labor
4.1.5 Class:
4.1.5.1 Class 1—10to15in.(254to381mm)widecooking
3. Terminology
cavity.
3.1 Descriptions of Terms Specific to This Standard:
4.1.5.2 Class 2—Over 15 to 18 in. (381 to 457 mm) wide
3.1.1 cavity—that portion of the microwave cooking appli-
cooking cavity.
ance in which food may be heated, cooked, or defrosted.
4.1.5.3 Class 3—Over 18 to 24 in. (457 to 610 mm) wide
3.1.2 door—the moveable barrier that permits access to the
cooking cavity.
cavityforplacementorremovaloffood,andwhosefunctionis
4.1.5.4 Class 4—Over 24 in. (610 mm) wide cooking
to prevent emission of microwave energy from the passage or
cavity.
opening that provides access to the cavity.
3.1.3 interlock—a device or system, either electrical, me-
5. Ordering Information
chanical, or electromechanical, that serves to prevent exposure
5.1 Ordering Data—Purchasers shall select the preferred
to an electric shock, or physical injury, or excessive radiation
optionspermittedhereinandincludethefollowinginformation
emission when a door, cover, or access panel is opened or
in procurement documents:
removed.
5.1.1 Title, number, and date of this specification,
3.1.4 magnetron—a type of microwave energy generator
5.1.2 Type, size, group, class, and style of oven required
usually used in microwave cooking appliances.
(see 1.2 and 4.1),
3.1.5 microwave oven—a device that uses ultrahigh fre-
5.1.3 When oven hardware, fittings, door, cooking cavity,
quencyelectromagneticradiationinthebandsof915 625and
and exterior materials are other than as specified (see 6.2, 6.4,
2450 6 50 MHz to prepare food.
6.5, and 6.6),
3.1.6 microwave radiation emission—the microwave en-
5.1.4 When an automatic oven shutdown is required for
ergy to which persons might be exposed during operation or
vending operation use (see 7.3.2),
user servicing of a microwave cooking appliance.
5.1.5 When surge voltage protection is required (see 7.4.2),
3.1.7 viewing screen—that feature of a microwave appli-
5.1.6 When an air intake filter is required (see 7.6),
ance, usually part of the door assembly, that is opaque to
5.1.7 When a heat control is to be provided (see 7.7),
microwave energy but visually transparent to provide for
5.1.8 When convection heating capability is to be provided
viewing the oven contents.
(see 7.7),
5.1.9 When a temperature sensing probe is to be provided
4. Classification
(see 7.7),
4.1 Microwave ovens covered by this specification are
5.1.10 Whenaninfraredtemperaturesensingdeviceistobe
classifiedbytypes,sizes,groups,styles,andclassesasfollows:
provided (see 7.7),
4.1.1 Type:
5.1.11 When power level controls are to be other than
4.1.1.1 Type I—Commercial microwave oven.
specified, or when selection of microwave power in 10%
4.1.1.2 Type II—Combination commercial microwave and
increments is offered (see 7.7.2),
convection/radiant heat oven.
5.1.12 Voltage and frequency (Hz) of input power, if other
4.1.2 Size:
than specified (see 7.8.1),
4.1.2.1 Size 600—600 to 1199 W microwave power output.
5.1.13 When the power cord length is other than specified
4.1.2.2 Size 1200—1200 to 1799 W microwave power
(see 7.8.2),
output.
5.1.14 Treatment and painting, if other than specified (see
7.9),
10 5.1.15 Whenwindowsarerequiredinovendoors(see7.12),
Available from Superintendent of Documents, U.S. Government Printing
Office, Washington, DC 20402. 5.1.16 When a mounting is required for the oven (see 8.1).
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
F 1360 – 93 (1999)
5.1.17 When a cavity light for ovens without viewing 6.6 Exterior—Unlessotherwisespecified(see5.1),material
screens is other than specified (see 8.2), shall be Types 302, 304, 316 or 430 corrosion-resistant steel
5.1.18 Whenthecontractoristohaveresponsibilityfor,and conforming to Specification A240 or to Specifications A167
use facilities other than specified for inspection requirements or A176 as applicable, and thickness shall be 20 gage min.
(see 10.3), (0.0375 in. (1 mm) U.S. revised standard gage).
5.1.19 When a first article is required for inspection and
7. Design, Construction, and Physical Requirements
approval (see 10.6),
7.1 General—Microwave ovens shall conform to the refer-
5.1.20 When an oven light is required to be on (see 11.5.2),
enced documents listed in Section 2. The oven shall be
5.1.21 Level of preservation and packing required if other
deliveredassembledwithallcomponentsnecessarytoensurea
than as stated in Practice D3951 (see 12.1),
fully functional product.
5.1.22 When sides of shipping containers are to be marked
7.2 Microwave Energy Source—Microwave energy shall be
other than as specified (see 12.2),
generated using one or more magnetron tubes or any other
5.1.23 When Federal/Military procurements are required,
suitable generating source of microwave energy. Microwave
review and implement the applicable supplemental require-
energy shall be interrupted and the generating source shall be
ments (see S1.1 thru S7.2.3),
renderedinoperative(eitherturnedofforswitchedtoastandby
5.1.24 When specified in the purchase order or contract, the
mode) when the oven door is open or not securely latched in
purchaser shall be furnished certification that samples repre-
the closed position.
sentingeachlothavebeeneithertestedorinspectedasdirected
7.2.1 Warning Label—A warning marking shall be affixed
inthisspecificationandtherequirementshavebeenmet.When
to the outer case assembly or adjacent to each service access
specified in the purchase order or contract, a report of the test
coverandadjacenttooneofthefastenersthatsecurestheouter
results shall be furnished.
case assembly to the oven chassis. A high voltage warning
6. Materials
label shall also be placed near the high voltage components
6.1 General—Microwave ovens shall conform to the refer- inside the outer case. The label shall include but is not limited
enced documents listed in Section 2. Materials used shall be to the following warnings:
free from defects that would affect the performance or main- 7.2.1.1 A warning of high voltage,
tainabilityofindividualcomponentsoroftheoverallassembly. 7.2.1.2 Power supply must be disconnected before servic-
Materialsnotspecifiedhereinshallbeofthesamequalityused ing,
for the intended purpose in commercial practice. Unless 7.2.1.3 Access covers must be in place during use, and
otherwisespecifiedherein,allequipment,material,andarticles 7.2.1.4 Servicing should be done only by authorized indi-
incorporatedintheworkcoveredbythisspecificationaretobe viduals.
new and fabricated using materials produced from recovered 7.2.2 Microwave Radiation Distribution— Means shall be
materialstothemaximumextentpossiblewithoutjeopardizing provided to maintain uniform distribution of microwave radia-
the intended use. The term “recovered materials” means tion throughout the cooking cavity (see 11.6).
materials that have been collected or recovered from solid 7.2.3 Door Latch Mechanism—The mechanical door latch
waste and reprocessed to become a source of raw materials, as mechanism shall be certified to be operable for no fewer than
opposed to virgin raw materials. None of the above shall be 10000 cycles without any visible deformation or inoperation.
interpreted to mean that the use of used or rebuilt products are 7.3 Magnetron Protection:
allowed under this specification unless otherwise specified. 7.3.1 Reflected Energy—With the oven empty except for
6.2 Hardware and Fittings—Unless otherwise specified any required tray or sheet furnished by the manufacturer, the
(see 5.1), all hardware and fittings shall be corrosion-resistant oven shall be capable of operation at maximum power output
orsuitablyprocessedtoresistcorrosioninaccordancewiththe for1horone maximum timer cycle, whichever is shorter,
manufacturer’s standard practice. without damage to the magnetron or other oven components.
6.3 Threaded Parts—All threaded parts shall conform to 7.3.2 Automatic Shutdown—When specified (see 5.1), the
ANSI B1.1. ovens shall automatically shift to a standby condition after a
6.4 Cooking Cavity—Unless otherwise specified (see 5.1), nominal 60 s of nonoperation.
the cooking cavity shall be constructed of Types 302, 304, or 7.3.3 Thermal Protection—Means shall be provided to pro-
316 corrosion-resistant steel conforming to Specifications tect the magnetron from damage due to excessive heating.
A167orA240,oraluminumalloyType3003-0conformingto Protective devices shall be automatically resetable, or manu-
Specification B209. The cooking cavity shall be constructed ally resetable without requiring any disassembly of the oven.
and sealed to prevent spillage from draining into the oven 7.4 Circuit Protection:
chassis. 7.4.1 Excess C
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