1、MIL-L-43575A 1 June 1970 SUPERSEDING MIL-L-435 7 5 20 March 1968 KILITARY SPECIFICATION LAUNDRY PRESS, COMMERCIAL, CABINET TYPE, SINGLE LAY, LW CABINET, DRYING, FOR WASHABLE TROUSERS This specification is mandatory for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Sc
2、ope.- This specification covers a cabinet type laundry press which vil1 press washable trousers, with a crease (see 6.5) in the front and back of the legs in one lay, and a drying cabinet to completely dry trousers (see 6.1). 1.2 Classification.- Items shall be selected from the following as specifi
3、ed (see 6.2): Item 1 - Press Item 2 - Drying cabinet 2. APPLICAELE DOCUMENTS 2.1 The following documents of the issues in effect on date of invitation for bids or request gor proposal, fom a part of this specification to the extent specif i 207 East Ohio Street, Chicago, Illinois 60611; or 1655 Scot
4、t 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-XIL-L-435 7 SA NATIONAL FIRE PROTECTION ASSOCIATION (WPA) Standard No. 70 - National Electrical Code (1968). (Application for copies should be addressed to the National Fire Protection Association,
5、60 Batterymarch Street, Boston, Massachusetts 02110,) AMERICAN SOCIETP OF MECHANICAL ENGINEERS CODE (MME) Boiler and Pressure Vessel Code, Section VIII, Unfred Pressure Vesselsa Welding Qualifications of the American Society of Mechanical Engineers (Application for copies should be addressed to the
6、American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, New York 10017.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) Specification Al6743 - Corrosion-Resisting Chromium-Nickel Steel . Plate, Sheet, and Strip, Specification Ai76-63 - Corrosion-Resist
7、ing Chromium Steel Plate, (Application for copies should be addressed to the American Society for Sheet, and Strip. Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103.) AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) Standard 28.14961 - Safety Code for Laundry Machinery and Opera
8、tions. (Application for copies should be addressed to the American National Standards (Technical society and technical association specifications and standards are Institute, 1430 Broadway, New York, New York 10018.) generally available for reference from libraries. among technical groups and using
9、Federal agencies;) They are also distributed 3. REQorrreierrS , 3.1 First article.- This specification contains provisions for first article test and approval (see 4.2, 6.2, and 6.6). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43575A * 3
10、.2 Standard product.- Trouser presses and drying cabinets covered by this specification shall be the manufacturers current standard products except for those changes necessary to comply with this specification. components normally offered commercially shall be furnished with each laundry press and c
11、abinet. All accessories and 3.3 Codes and standards.- * 3.3.1 NFPA.- The laundry press and cabinets shall be wired to conform to NFPA Standard No. 70, * 3.3.2 i trou- sers fabricated of 35 percent cotton or rayon and 65 percent polyester yarns; and standard khaki and fatigue trousers. to fit waists
12、from 28 to 48 -inches, stretch legs with inseam measurements of 24 to 37 inches their full length, and fit cuffs 9-3/4 to 11-1/2 inches wide (measured across the leg from edge to edge at the bottom of the trousers). Presses shall be furnished complete with motors, driving mechanism, including produc
13、tion counter belts and chains, starters and controllers, master switches, timers, cutouts, and other electrical equipment and commercial accessories in- cluding anchor bolts, if, and as applicable. All presses furnished under this specification shall show that the assembly of component parts are com
14、plete; of proper interrelationship; moving parts evidence no undue vibration, noise, or wer heating of bearings; and the opening and closing devices operate smoothly and positively whea.submitted to the test specified in k.4.1. In addition to the above, the trousers pressed during the test The waist
15、 and The press shall be capable of shul- The press shall have automatic expanders * shall conform to the following: a, Top (1) (2) (3) (4) Waist sides free of wrinkles. Pocket area free of wrinkles. Fly area free of wrinkles and puckering. Crotch free of wrinkles or folds. 6 Provided by IHSNot for R
16、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43575A b. Legs (1) (2) (3) (4) Outseam free of wrinkles or folds. Inseam free of wrinkles or folds. Full length prominent crease (see 6.5) in both front and back of legs. Outseam and inseam etch within 1/4 inch from cuff
17、 to crotch. * 3.6.1.1 Performance.- Presses furnished under this specification shall be capable of satisfactorily and completely processing approximately 100 trousers per hour when two presses are operated by one operator (see 4.4.1). 3.6.1.2 Heads, press.- The press heads shall be removable steam c
18、hambers of cast iron, cast steel, fabricated carbon steel, or corrosion-resistant metal shaped to conform to the contour surfaces against which they press. cast-iron, or fabricated carbon steel ironing surfaces shall be plated or sprayed with nickel or corrosion-resistant metal. All ironing surfaces
19、 shall be polished smooth. Cast-steel, Altrminian heads are not acceptable. 3.6.1.3 Safety devices.- Each trouser press shall be provided with (1) a touch safety device; or (2) press heads shall be interlocked with a cabinet door that shall automatically be activated stopping the pressing cycle, if
20、the operator places a hand inside the machine; or (3) two manually operated controls may be conveniently located and arranged so that both hands of the operator must be on the controls before the heads can be closed (see 4.4.1). 3.6.2 Item 2 - drying cabinet.- The cabinet shall be steam heated and d
21、esigned for drying approximately 100 washable trousers per hour which are not completely dry when removed from a press. It shall be approximately 23 inche6 wide, 8 feet long, and 6 feet high; of welded steel construction, and well insulated with batts not less than 1-inch thick. for maintaining a te
22、bperature between 250 and 275 degrees Fahrenheit (F.) within the cabinet. trousers through the cabinet and shall be compatible with the press with which it is to be used. ing clips. The conveyor control shall be interlocked with the presses so that when either of the presses goes through a pressing
23、cyche, the conveyor will ad- vance one station, (set qf clips or hooks supporthg one pair of trousers) or when specified (see 6.2), the cabinet shall be equipped with a foot pedal con- trolled, electrically driven gear motor. Cabinets shall be furnished complete with motors, driving mechanism, inclu
24、ding belts and Chains, starters and con- trollers, master switches, timers, cutouts, and other electrical equipment and commercial accessories, if, and as applicable. All cabinets furnished under this specification shall show that the assembly of component parts are complete; Of proper interrelation
25、ship; moving parts evidence no undue vibration, noise, or overheating of bearings; and the opening and closing devices operate smoothly and positively when tested as specified in 4.4.1. Sufficient heating coils shall be provided The cabinet shall be-equipped with a conveyor for transporting The conv
26、eyor shall be furnishedwith replaceable trouser hold- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I - flIL-L-q3575A 35 W 9999906 0249089 9 W, . ._ _-._ t- - MIL-L-45575A I 3.6,3 Wiring and instructfons.- Wiring shall be provided between motors, c
27、ontrollers, timers, pushbuttons, starters, and limit switches installed on the equipment and shall be done with materials specified in 3.5.4, as applicable, except metallic armored cable may be used where required for belt adjustment by moving a motor. All wiring shall terminate in connection boxes
28、with provisions for connection beyond the machine, different color. Each conductor shall be identified by a 3.6.4 Motor control circuit.- Controllers shall be of the magnetic across- the-line type having a separate pole for each ungrounded conductor. control stations shall be mounted at points readi
29、ly accessible to operators. Pushbuttons shall be fully protected or recessed to prevent accidental operation. Pushbutton 3.6.5 Applicability for current characteristics.- The electrical parts of the machine shall be designed for the voltage, frequency, and number of phases specified (see 6.2) , 3.6.
30、6 PipinK.- Necessary integral pipe fittings shall be furnished and installed to comply with accepted plumbing practice. connections shall be supplied with manually operated shutoff valves. Inlet steam and air supply 3.6.6.1 Valves and traps.- Steam, drain, condensate (with three-valve bypass and tra
31、p), pressure reducing, and other operational valves shall be so installed -. - as to be readily accessible-f or operation- and maintenance. 3,6.6.2 Steam and air pressures.- Assembly of pipe, tube, fittings, coils, cylinders, chests, and chambers using steam shall be designed for a working steam pre
32、ssure of 125 p.s.i.g. and shall be capable of withstanding a hydrostatic pressure established in accordance with the provisions of the ASME nfired Pressure Vessel Code, without any leaks. Air lines and cylinders shall be designed to vithstan a minimum of 80 p.s.i.g, without any leaks when tested as
33、specified in 4.4.2, - * 3.6.7 Equipment bases.- Bases shall be constructed so that points of contact with the floor shall be in the same plane. Provisions for anchoring to the floor shall be provided. 1 * 3.6.8 Replaceability of bearings.- All bearings shall be readily replaceable. f 3.6.9 Lubricati
34、on.- Lubrication for forced type systems shall be provided and accessibly located for lubricating bearings, excluding motors (see 3.5.5), and chain or gear drives. Where lubricant reservoirs are required for chain or gear drives the reservoirs shall be provided with a threaded cap at the top and a d
35、rain plug at the bottom. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43575A 35 777770b 02Li9070 5 KCL-L-43575A * 3.6.9.1 Seals.- Seals shall be provided to prevent the lubricant from entering parrs of the.machine where trouser6 are handle
36、d. * 3.6.10 Belts and pulleys.- V-belts shall be of the grades commercially knm as multiple-drive or variable speed types, except where a single belt is furnshed.with a fractional-horsepower motor, a V-belt commercialy known as a fractional-horsepower belt may be supplied. Pulleys for V-belts shall
37、be suitably grooved for the type and size belts used. Chain drives shall be of the silent or roller-chain type. belt and chain tension. Means shall be provided for readily ajusting * 3.6.11 Spacing and extent of fastenings.- The spacing and extent of welds, rivets, bolts, and screws shall prevent bu
38、lging of the metals fastened. * 3.6.12 Marking for identification.- Each machine covered by this specifica- tion shall be marked for identification in accordance with MIL-STD-130. * 3.6.13 Finish and color.- Unless otherwise specified (see 6.2) each press and drying cabinet shall be finished in acco
39、rdance with the manufacturers standard practice except emergency stop pushbuttons shall be red and this calor shall be limited to pushbuttons. shall be finished to a commercial polish in accordance with the manufacturers standard practice. Exposed surfaces of corrosion-resistant metals * 3.6.14 Elec
40、tromagnetic compatibility.- When specified (see 6.2), equipment shall be designed and equipped for electromagnetic compatibility in accordance with class IIB of MIL-STD-461 (see 4.4.3). * 3.6.15 Moisture and fungus resistant treatment.- When specified (see 6.2), electrical components shall be moistu
41、re and fungus resistant treated with material conforming to and applied as specified in MIL-T-152. z * 3.6.16 Welders.- The welders performing the welding on assemblies, sub- assemblies, and on the end it- shall be certified welders and shall have passed the qualification test as prescribed by eithe
42、r the “Standard Qualification Procedures of the American Welding Society“ or “Welding Qualification of the American Society of Mechanical Engineers“. The supplier shall furnish the Government with a list of names of his welders who are-certified and have passed the test of either referenced codes an
43、d he shall certify that the welding of this equipment was performed by welders on the list. 3.7 Workmanship.- Presses and drying cabinets shal be free from defects such as fractures, splits, punctures, tears, dents, creases, or malformations. There shall be no sharp edges, slivers, burrs, or project
44、ions. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-LI3575A 35 7777706 0247093 7 W MIL-L-4 35 7 5A 3.7.1 App licaton of finish.- continuous, smooth, adherent, without discoloration or imbedded foreign material and shall contain no sags, run
45、s, drips, creeps, laps, bubbles, streaks, vrinkles, blisters, scratches, pours, pits, lumps, flux, or orange peel. grinds, or toolmarks shall Shaw through the coating. The finish applied to the end item shall be No rust, rough 3.7.2 Welding and brazing.- All surfaces of parts to be welded or brazed
46、Welding and brazing shall be accomplished in a manner which shall be clean. vill prevent the occurrence of burn holes, cracks, fractures, or incomplete fusion and deformation of material. moved from finished welds. deposit material compatible with the base metal. A1 scale and flux deposits shall be
47、re- Electrodes or welding rods used for welding shall 3.7.3 So1derq.- Soldering shall be complete and adherent with all flux and residue removed and shall contain no pin holes. 3.7.4 Threaded fasteners.- Threaded fasteners shall not be broken, stripped, fractured, or loose. 3.7.5 Rivets.- Rivets sha
48、ll be driven to completely fill the holes, with full size heads neatly finished and in full contact with the surface of the riveted nexthers. 3.7.6 Electrical wiring.- Wiring shall not be cut, abraded, or have excessive insulation stripped, and shall be properly and tightly joined at terminals. Wiri
49、ng shall have adequate slack to provide strain relief. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchace order, the supplier is responsible for the perfonnance of all inspection requirements as specified herein. specified in the contract or order,the supplier may use his own or any other facilities suitable for the performance of the inspection requirements specified her
