1、IINCH-POUND I _ A-A- 5 946 9 23 June 1999 SUPERSEDING MIL-W-19044E 18 September 1993 COMMERCIAL ITEM DESCRIPTION WASHER-EXTRACTOR, LAUNDRY, 35 TO 200 POUND CAPACITI (NAVAL SHIPBOARD) The General Semices Administration has authorized the use of this commercial item description for all federal agencie
2、s. 1. SCOPE This commercial item description (CID) covers fully automatic 35 to 200 pound (dry weight) capacity combination washer-extractor machines for Naval shipboard use. They are not suitable for use aboard Navy submarines. 2. CLASSIFICATION Type 1: Steam booster heater Type 2: Electric booster
3、 heater Class 1: (Not used) Class 2: Microprocessor automatic formula Control unit Class 3: Programmable logic control automatic formula control unit Style 1: Unsectionalized Style 2: Sectionalized SALIENT CHARACTERISTICS 3.1 Desiun and construction. The washer-extractor shall be front loading, full
4、y automatic, shell and cylinder (either open-pocket for washer-extractors 75 pounds or less or three-pocket for washer-extractors 100 pounds or greater, see Table I) with rotating action about the horizontal axis. Axial rotation of cylinders shall incorporate reversing action during appropriate part
5、s of the cycle. 3.1.1 Shell. The shell shall be watertight and rigid. The front of the shell shall be removable to permit replacement of the cylinder and the shell seams shall not pass through the drain valve opening. The shell shall consist of the following: openings for a door; cylinder shaft; fou
6、r-compartment automatic and manual supply dispensers; water piping and either steam or electric heat exchanger; drain outlet; overflow and vent outlet; and water level and temperature indicator. When the door is fitted with a window, the tempered glass used shall be strong enough to prevent damage u
7、nder normal operation. The glass shall be sealed and be readily replaceable. 3.1.2 Cvlinder. The cylinder construction shall be rigid. Perforations in the cylinder shall be sized and spaced for efficient washing, rinsing, and extraction. If the cylinder is the three-pocket type, it shall be provided
8、 with a hinged door as part of the front head and a means to prevent laundry from falling between the cylinder and shell during loading and unloading. The door shall be not less than 150 square inches for each 50 pounds of rated washer-extractor capacity. Beneficial comments, recommendations, additi
9、ons, 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 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited
10、. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-594b9 W 9018054 OOLLBO9 948 A-A-59469 3.1.2.1 Brake. The washer-extractor shall be provided with an electric or pneumatic power-operated brake for rapid deceleration and stopping of the cylinder.
11、The brake shall stop rotation of a loaded cylinder within 60 seconds during any part of the extraction cycle. 3.1.3 CaDac itv. s ize. weiaht and volume. The capacity, size, weight, and volume of the washer-extractor shall be in accordance with Table I. TABLE I. Canacitv. size, weiaht. and volume. 3.
12、1.4 Stvle 2, Sectionalized. The style 2 washer-extractor shall be constructed to be disassembled, transported tthrough a shipboard access measuring 26 X 66 inches with 8-inch radius corners and reassembled within the ship without hot work such as welding or brazing. Major subassemblies that bolt tog
13、ether are preferred and shall be match-marked to assist in field reassembly. 3.1.5 Water consummion. and the location and configuration of the booster heater shall be such that the water consumption will be kept to a minimum. Water levels shall be readily adjustable in the field. 3.1.6 PiDes. fittin
14、us. valves. and connectiong. Piping valves and fittings shall have a working pressure of 100 pounds per square inch. A vacuum breaker backflow preventer shall be installed in the water inlet piping system. 3.1.6.1 Automatic valves. The drain valve, hot and cold freshwater inlet valves, and steam inl
15、et valve (on type 1 washer-extractor) shall be electric or pneumatic and automatically controlled by the automatic formula control unit. The contour and configuration of the shell plating 3.1.6.2 Inlet valves. Two separate inlet valves, for hot and cold fresh water, shall be provided. The machine sh
16、all also be fitted with a threaded 1- 1/2 inch connection on the top of the shell for manual salt water supply. (Shipboard requirement, see 7.2) 3.1.6.3 Overflow and vent connections. The washer-extractor shall be provided with combination overflow and vent connections, located so that the overflow
17、may be piped to the drain line when the washer-extractor is installed. 3.1.6.4 We 1. washer-extractor, steam com ection. The type 1 washer- extractor shall be provided with a steam connection not less than a threaded l/2-inch national pipe size. 3.1.6.5 Drain valve. A normally open drain valve shall
18、 be fitted at the lowest point of the shell. A filter shall be provided to prevent foreign objects from passing through the drain valve into the ships drainage system. The filter shall be readily accessible and easily removable for cleaning. 2 Provided by IHSNot for ResaleNo reproduction or networki
19、ng permitted without license from IHS-,-,-A-A- 59469 3.1.7 Automatic sutmlv. Each washer-extractor shall have an automatic supply dispenser for adding supplies under control of the automatic formula control unit. The dispenser shall contain not less than four compartments which can be filled manuall
20、y at the beginning of the wash cycle. Supply dispenser compartments shall be the water flushing type. Automatic supply dispensers shall not allow soap or detergent to clog or cake. Tilt cans, dump cans, or supply cups shall not be used. 3.1.7.1 Automatic sut3131v injection hose assemblv. The hose as
21、sembly shall consist of an inner rubber tube, two or more plies of fabric braid reinforcement with a rubber ply between the braids, a cover, couplings, and clamps. 3.1.7.1.1 Inner tube. The inner tube shall be homogeneous, nonporous, water resistant, and shall be of uniform thickness. 3.1.7.1.2 Fabr
22、ic reinforcement. The fabric reinforcement shall consist of two or more plies of braided cotton, rayon, or polyester, embedded in a rubber compound with a rubber ply between the braids. The reinforcement shall be evenly and uniformly braided, free from knots, lumps, irregularities of twist, and all
23、other defects. 3.1.7.1.3 Coudinus. For the hose, each 3-feet of length shall have one male and one female coupling fitted into alternate ends of the hose. 3.1.7.1.4 Clamns. Each coupling shall be secured on the hose end by means of three metal clamps staggered at 120 degrees. 3.1.8 Manual sumlv. A s
24、eparate opening shall be provided for manual addition of supplies. The opening shall be designed to protect against water splashing or overflowing during normal operation or in the event the washer- extractor overfills. 3.1.9 TVD e 1 and tme 2, washer-extractor. booster heater. Each washer- extracto
25、r shall be provided with a booster heater unit. One of the following two types of booster heaters shall be provided, depending on the type of washer-extractor: (1) Indirect steam heating for type 1 washer-extractors, or: (2) Electric heating for type 2 washer-extractors. The booster heater shall be
26、located in the tub and shall remain fully submerged at inclination angles of 12 degrees at the lowest water level fill. The configuration of the booster heater shall efficiently heat the tub water as specified in 3.4.1. (Shipboard requirement, see 7.2) 3.1.9.1 TYD e 1, washer-extractor. indirect ste
27、am heater. Each type I washer- extractor shall be provided with a means of efficiently transferring the heat entering the washer-extractor at the steam connection to the wash and rinse solutions, without the steam or its condensate coming into direct contact with the solution or wash load. A steam h
28、eat valve, strainer, and trap shall be provided with the steam piping system and shall be suitable for 100 psi saturated steam working pressure The heat exchanger assembly shall be in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII. 3.1.9.2 TVD e 2. washer-extractor. electric
29、immersion heater. The heating elements shall operate on 440 VAC, 60 Hz, three-phase power and shall use power at a rate not greater than the maximum specified in Table II. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-57469 7018054 0011811 5T
30、b m Normal maximum capacity per load (dry weight, pounds) 75 100 150 200 A-A-594 69 TABLE II. Power usaae of heatina element assemblv Maximum power (kW) 24 35 50 60 3.1.11 Drives. 3.1.11.1 Cvlinder drive. The cylinder shall be driven by an electric motor or motors through V-belts or a combination of
31、 gearing and V-belts to provide proper speed for the washing, extracting, and draining (distribution) cycles. The cylinder shall perform not more than three reverse rotations per 95 seconds during the washing cycle. A means shall be provided for inching the cylinder door to the proper loading positi
32、on on three-pocket washer- extractors. Means shall be provided for adjusting tension of the V-belts. 3.1.11.2 Gears. Gears shall be in accordance with AGMA 2000-A88 and AGMA 2001-B88. The gears shall transmit full rated horsepower throughout the speed ranges without failure for the expected service
33、life of the washer-extractor. 3.1.12 Interlock and safetv devices. 3.1.12.1 Functional modes. Safety and interlocking devices shall function for both clockwise and counterclockwise rotation of the cylinder and when the ship is rolling or listing at not less than 12O from its normal position. (Shipbo
34、ard requirement, see 7.2) 3.1.12.2 Wash-extract interlock. The driving arrangement shall permit changing from the wash to the extract cycle and vice versa with interlocking feature to ensure smooth transfer. 3.1.12.3 cylinder rotation while the machine is off. Also, in the event of power loss and/or
35、 loss of low pressure air the brake shall close automatically. 3.1.12.4 Shell door interlock. The shell door shall be fitted with an electric interlock that prevents the door from being opened when the machine is in the extract mode, and prevents rotation of the cylinder when the shell door is open
36、except in the JOG mode. 3.1.12.5 JOG buttons. JOG or inching buttons shall be provided on the control panel on multi-pocket machines. The JOG function shall require the use of both hands of the operator while inching the cylinder. Depressing both the JOG button and either of the directional buttons
37、shall release the brake and engage cylinder movement. Releasing either button shall bring the cylinder to an immediate stop. 3.1.12.6 Guards. Exposed belts, shafts, pulleys, and other moving parts shall be fully enclosed by metal guards. Gears shall be fully enclosed in gear housing. Metal guards sh
38、all be firmly supported, but shall also be readily removable for maintenance. Brake interlock. The main brake shall be normally closed and prevent 3.1.12.7 Vibration switch . adjustable vibration limit cutout device to disconnect service should excessive equipment-damaging vibration occur. 3.1.12.8
39、Drain interloc k. the machine from extracting until the water level has drained to a safe level. The washer-extractor shall be provided with an An interlock shall be provided which will prevent 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59
40、4b9 W 9038054 0033832 432 W 3.1.12.9 Rnersencv stop button. an emergency stop button, located accessible area. The button shall stop when activated. A-A-594 69 The washer-extractor shall be provided with on the front of the unit within an bring the washer-extractor to an immediate 3.1.13 Automat ic
41、formula control unit. Each washer-extractor shall be provided with an automatic formula control unit for controlling the washer- extractor through any complete cycle of wash, multiple rinse, drain, and intermediate and final extraction phases up to 60 minutes in duration. The unit shall automaticall
42、y control fills, drains, temperatures, rinses, extracts, supply injection, all phases of clutching and braking, and audible and visible signals. The automatic formula control unit shall be the solid state, microprocessor type on class 2 washer-extractors and the progranunable logic control type on c
43、lass 3 washer-extractors. 3.1.13.1 Functional control. Water level control shall be achieved by a switch electrically interconnected to the automatic formula control unit as programmed. The control unit shall automatically control the water level for not less than two separate levels and a safety le
44、vel (3.1.12.8) and shall automatically add water to compensate for water absorbed by the load. The water levels shall be readily adjustable. Water temperature control be achieved by thermostatic regulation of the hot and cold water inlet valves and the booster heater and shall be electrically interc
45、onnected to the automatic formula control unit as programmed. Means shall be provided to allow the operator to set and adjust not less than two separate bath temperatures ranging from 60 to 220 OF; (1) A controlled temperature bath in which the hot and cold water valves alternately cycle open and cl
46、osed to approximately attain the set point temperature, timing shall advance after the water level is attained, and (2) A heated temperature bath in which the machine fills with hot water after which the heater shall energize if the bath temperature is below the set point temperature (the heater sha
47、ll not energize until the minimum water level is attained). An ON/OFF switch shall be provided on the control unit which shall allow formula timing to advance while the heater is energized. With the switch in the OFF position the timing shall not proceed until the heated bath set point temperature i
48、s attained. The thermostatic control shall provide a digital display which will allow the operator to scroll through the set point temperatures and actual bath temperature. 3.1.13.2 Class 2. microDrocessor control unit. The microprocessor formula control unit located on the class 2 washer-extractor
49、shall have an operational mode for storing not less than four independent laundry wash formulas. The four formulas shall have not less than 25 separate steps (that is, break suds, rinse, extract, drain, and finish). The control unit shall be provided with a means to start, stop, or reset the existing selected formula. 3.1.13.2.1 Class 2. non-txosranunable control unit. The nonprogrammable control unit shall be preprogrammed with three standard Navy wash formulas published in the Navy Exchange Service Com
