1、COMMERCIAL ITEM DESCRIPTION IINCH-POUNDI A-A- 593 63 21 Januarv 1999 SUPERSEDING 9 April 1990 MIL-L-19493C LAUNDRY PRESSING AND FINISHING EQUIPMENT (NAVAL SHIPBOARD) The General Services Administration has authorized the use of this commercial item description for all federal agencies. 1. SCOPE This
2、 commercial item description (CID) covers laundry pressing and finishing equipment for Naval shipboard use. 2. CLASSIFICATION Type 1: Laundry presses, steam heated Class 1: Trouser topping, double Class 2: General utility Type 2: Laundry presses, electrically heated Class 1: Trouser topping, double
3、Class 2: General utility Type 3: Flatwork ironer, cylinder, steam heated Size 1: 85 inch ironer Size 2: 60 inch ironer 1 3. SALIENT CHARACTERISTICS 3.1 Desisn and construction. 3.1.1 e 1 and tvDe 2, laundrv Dresses. steam, an d electricallv heated. Each press shall be provided with a rigid frame sup
4、porting a heated head and buck. The frame shall provide support for the work table, operating mechanism, and the operating mechanism enclosure. The operating enclosure shall enclose the operating mechanism to the maximum extent practicable, and it shall be provided with access plates as necessary fo
5、r inspection and maintenance. 3.1.1.1 Head des im. The head shall be concave in shape to conform with the buck. Type 1 press head shall be fabricated in accordance with ASME Boiler and Pressure Vessel Code, Section VIII. The head shall be unpadded and completely cover the padded buck when closed. (S
6、hipboard requirement, see 7.2) Beneficial comments, recommendations, additions, deletions, clarifications, etc., and any other data which may improve this document should be sent to: Commander, Naval Sea Systems Command, 2531 Jefferson Davis Highway, Arlington, VA 22242-5160. AMSC N/A FSC 3510 DISTR
7、IBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59363 = 9038054 0004544 073 m A-A-593 63 - 3.1.1.2 Buck desian. The buck shall be mounted on the press frame. The top pla
8、te of the buck shall be curved and shaped to fit the head. Type 1 press bucks shall conform to ACME Boiler and Pressure Vessel Code, Section VIII. (Shipboard requirement, see 7.2) 3.1.1.3 Buck Daddinq. A resilient pad with additional padding and covering shall ensure uniform pressure and conform to
9、the uneven thickness of goods being pressed. 3.1.1.4 Head and buck arranaements. When required, the head shall be movable and spring counterbalanced for ease of movement. Radial movement and alignment of the head shall offer no interference or danger to the operator in the performance of the pressin
10、g functions and shall be positioned for proper contact with the buck. 3.1.1.4.1 Head s hock absorber. A shock absorber or similar mechanism shall be provided to permit checking of the head to a smooth, silent stop but not to interfere with rapid opening or closing of the head. 3.1.1.5 Head and buck
11、adiustment. Means shall be provided for adjusting and aligning either the head or the buck, or both, to conform to varying thicknesses of goods being pressed. 3.1.1.6 Table. A finished and rigid work table shall be provided with each press. Table and edge aprons shall support press work that overlap
12、s the buck, and shall be snag free. 3.1.1.7 Heatina of head and buck. 3.1.1.7.1 Steam and condensate. . Each head and buck shall be unifontil. -sated and properly drained. The steam and the condensate lines to and from the moving members shall be connected by means of a flexible metallic hose -ated
13、for a saturated steam working pressure of 100 psi gauge. All exposed flexible steam hoses shall be sheathed with insulating material to prevent burn hazards to operating and machine personnel. 3.1.1.7.2 Electric heatins of head and buck. Press head and buck shall be heated by sheathed, electric stri
14、p heating elements. The electric strip heating shall allow replacement of damaged elements by maintenance personnel. Elements shall be configured and arranged for efficient and uniform heating of each pressing surface. The arrangement of temperature sensors shall preclude the overheating of any area
15、 in the event of element failure. The thermostat controller for the press head shall have a temperature setting of not greater than 320 “F. The thermostat controller for the press buck shall have a single temperature setting of 275 “F. The thermostats shall be provided with an indicator light to ind
16、icate energization of the electric strip heating elements in the head and buck. The thermostat capillary tube shall be covered and insulated to prevent false temperature readings due to air flow across the top of the hood surface. Sheath material shall be corrosion-resistant with a sheath material o
17、perating temperature of not less than 900 “F. The sheath shall enclose a 80Ni-20Cr helically-coiled resistance wire, uniformly spaced over the length and width of the element. Mounting slots or holes shall be provided at both ends of the heating elements. Shielding of element threaded terminals and
18、wiring shall prevent electric shock, moisture infiltration, and burn hazards for operators and maintenance personnel. Bending or forming shall be done at the element manufacturers plant. 3.1.1.8 Pneumatic DO wer amlication. Presses shall be arranged so that the head or heads shall be moved automatic
19、ally to the full open position when the pneumatic power is off. The head or heads shall be moved continuously and uniformly by air power only so as to make contact with the opposite member. In 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5 9
20、3 63 this position the air power shall provide the necessary incoming air pressure for pressing materials. The press head and buck shall provide an automatic take-up to compensate for shrinkage of padding. The press shall ensure satisfactory pressure for garments of unequal thickness as well as thos
21、e of uniform thickness. Presses shall be pneumatically operated and shall operate on a working air pressure of not less than 65 psi gauge. 3.1.1.9 Press controls. manually operated safety bar that closes the press when pushed down and opens the press when lifted. The safety bar shall surround the pe
22、riphery of the press head except in way of the rear operating mechanism and precede the head in closing. The press shall automatically release if the safety bar comes into contact with an obstruction on the downstroke. Power for the moving member shall be controlled by a Type 1 2 Class r.? dt h Dept
23、h 1 and 2 49 44 6: 44 1 and 2 - TABLE 2. Buck dimensions (inches) Class 1 2 Length Width at Width Width at Pressing ( max ) end (max) ctr) end (min) Requirements 35-1/2 - 12 7-both Trouser topping (double) two at a time 53-1/4 18 - 10-1/2 General utility 3 Provided by IHSNot for ResaleNo reproductio
24、n or networking permitted without license from IHS-,-,- A-A-593b3 D 9038054 0004546 Lib Size Length (max) 1 13 O 2 105 Depth (max) Height (max) 54 70 54 70 Size 1 2 3.1.2.4 Steam workina messure. The cylinder and all working parts connected therewith shall be constructed and rated for a saturated st
25、eam working pressure of 100 to 125 y- gauge. 3.1.2.5 Auxiliam roli . rhere shall be one padded compression roller having a diameter of 6-3/8 inr“s. A lever shall be provided to raise and lower the padded compression roller from contact with the heated cylinder. A padded finger roll (doffer roll) sha
26、ll be mounted on the feed ribbons in front of the finger guard safety devices. This roll shall act as a guide in feeding and shall eliminate wrinkles from the work. i outside diameter Length (min) Length (max) 18 90 100 18 6S 75 3.1.2.6 Ribbons. The material shall be fitted to prevent the flatwork f
27、rom winding around the auxiliary rolls and to deliver the pressed flatwork back to the receiving table. 3.1.2.7 Alianment mide . Means shall be provided to automatically hold the feed ribbons and the return ribbons in tension and alignment. 3.1.2.8 Bearin- . The rolls and cylinder shall be provided
28、with self- aligning ball or roller bearings. The bearings shall be readily replaceable. Contacting metal swinging surfaces during normal operation, shall be provided with bronze bushings, ball, or roller bearings. 3.1.2.9 Receivina tabk . A rigid work table shall be fitted along the feed (front) sid
29、e of the machine at the proper height for receiving ironed flatwork from the machine. The table shall hold the flatwork and shall be snag free. 3.1.2.10 Safety uuards. Exposed parts such as belts or chains, that may cause injury to personnel, shall be enclosed or covered with protective guards or sh
30、ields. Top and rear guards shall also be provided in way of rotating cylinders. Such guards shall be readily removable where maintenance is required. A guard shall be provided across the entire line of feed, arranged so that a slight movement of the guard in the feeding direction shall immediately s
31、top the machine. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59363 1111 9038054 0004547 882 m A-A-5 93 63 - 3.1.2.11 Drive mechanism. The machine shall be driven by an electric motor, mounted on the frame of the machine and connected by gea
32、ring, V-belts, or chains. The motor shall be powerful enough to drive the machine continuously. Gears, chains, and belts shall be readily accessible for adjustment of tension. 3.1.3 Valves. Steam and air supply connections shall be provided with the valves as necessary. Rotary valve controls shall o
33、pen the valve with a counterclockwise motion. Valve controls shall be provided with double ended arrows showing the direction of operations and shall be labeled at each end to indicate the functional result. Each valve shall be provided with a renewable stainless steel disc, stem, and seat. 3.2 Mate
34、rials. 3.2.1 Sta inless steel. Stainless steel materials shall be in accordance with ASTM A167, type 302 or 304. Bolts, screws, nuts, or other parts used for securing stainless steel parts shall also be stainless steel. 3.2.2 Tme 1 and twe 2, laundry messes. steam and electr icallv heated. Each pres
35、s shall have a rigid supporting frame of steel in accordance with ASTM A36 or malleable iron in accordance with ASTM A47. Aprons/workthrough, cover cloths, feed ribbons and pads shall be furnished with the unit, as applicable. All nuts subjected to shock or vibration shall be lock nuts. 3.2.2.1 Pres
36、s head . Press head shall be constructed of materials in accordance with ASTM A285 Grade C plate and ASTM A36 internal structures and fabricated in accordance with the design requirements of ASME Boiler and Pressure Vessel Code Section VIII. The heating elements on the top surface of type 2 press he
37、ads shall be covered with sheet metal. The finishing or lower surface shall be smooth to the touch and either polished or plated. (Shipboard requirement, see 7.2) 3.2.2.2 Head exhaust hood. The hood shall be constructed of .063-inch thick aluminum alloy in accordance with ASTM B209. 3.2.2.3 Press bu
38、ck. The buck shall be constructed of materials in accordance with ASTM A285 Grade C plate and ASTM A36 internal structures and fabricated in accordance with the design requirements of ASME Boiler and Pressure Vessel Code Section VIII. 3.2.2.4 Buck Paddinq. The buck shall be covered with a preformed
39、corrosion- resisting woven metallic pad which shall be covered with double face nylon flannel and tailored heat-resisting non-flammable, nylon-polyester blend cover cloth having a draw string and retaining springs where necessary. In addition a non-asbestos insulation material shall be placed betwee
40、n the woven metallic pad and the heated buck surface. 3.2.2.5 Table. The press table shall be made of corrosion resistant metal. 3.2.3 We 3, f latwor k ironer. The flatwork ironer shall have a rigid supporting frame of steel in accordance with ASTM A36 or malleable iron in accordance with ASTM A47.
41、3.2.3.1 Steam cylinder. The cylinder shall be constructed of steel in accordance with ASME Boiler and Pressure Vessel Code, Section II, Part A, SA 53 (Grade B) or equivalent. 3.2.3.2 Auxiliam roll. The roll shall be constructed of steel with heads and trunnions secured. The padding of the compressio
42、n roller, cover cloth, and return ribbons shall be constructed of temperature resistant fabrics. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - A-A-593b3 m 9038054 0004548 719 m A-A- 5 9 3 6 3 - 3.2.3.3 Ribbons. The ribbons shall be duck, nomex
43、, or equivalent material. 3.2.3.4 Receivina table. A corrosion-resistant metal table shall be provided along the feed side (front) of the machine at the proper height for receiving ironed flatwork from the machine. 3.2.3.5 Guards. Safety guards shall be made of aluminum alloy or corrosion- resistant
44、 metal. 3.2.4 Pipes, fittinas, and valves. 3.2.4.1 PiDes. Pipes shall be constructed of stainless steel in accordance with ASTM A269, type 304, or copper in accordance with ASTM B75. 3.2.4.2 Fittinas. Fittings shall be cast bronze in accordance with ASTM B61 or ASTM B62 or other suitable metal or me
45、tal alloy in accordance with the manufacturers standard comercial practice. 3.2.4.3 Valves. Valves shall be cast bronze in accordance with ASTM B61 or other suitable metal or metal alloy in accordance with the manufacturers standard commercial practice. 3.2.4.4 Flexible steam hose assemblies. Flexib
46、le steam hose assemblies shall be extruded or convoluted tetrafluoroethylene hose with stainless steel wire braid and end fittings in accordance with SAE AS 604 or AS 620. 3.3 Electrical reauirements. The unit shall operate on 440 VAC, 60 Hz, three-phase power, as defined in DOD-STD-1399, Section 30
47、0, and shall have provisions for making direct (hardwired) connections for electric r-? (3 conductors) and for equipment grounding (1 conductor). All outermoa,-,Lietallic surfaces shall be grounded via the equipment grounding connection. The grounding resistance between any exposed metallic surfaces
48、 and the mon ground point shall be not greater than 0.1 ohm. Electrical components, other than the hermetically sealed motor, shall be provided in accordance with NEMA 250, Type 13 or equivalent enclosure protection. Metal parts of electrical components and enclosures shall be inherently corrosion r
49、esistant or shall be treated and processed for corrosion resistance in accordance with IEEE Standard 45. (Shipboard requirement, see 7.2) 3.3.1 Switches and timers. Each pneumatically and electrically operated unit of pressing and finishing equipment shall be provided with timers, limit switches, remote control push-button switches, signals, and indicating lights as necessary. The push-buttons shall be fully protected or recessed to prevent accidental operation of the unit. Eme
