MIL-HDBK-740 Dishwashing OperationsThis handbook contains information concerning the equipment, supplies, and procedures for the cleaning of tableware in single-tank and multiple-tank dishwashing machines, hand washing in kitchens and hand washing in the field.

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SECTION II - DISHWASHING MACHINES A.        CLASSIFICATION

MIL-HDBK-740

1.  SINGLE-TANK STATIONARY RACK, DOOR-TYPE DISHWASHING MACHINE- MULTIPLE-TANK (CONVEYOR-TYPE) DISHWASHING MACHINE.

a.  Description:  The single-tank stationary rack, door-type dishwashing machine (Figure - 1), and the multiple-tank (conveyor-type) dishwashing machine (Figures 2, 3, & 4) should conform to the requirements specified in the National Sanitation Foundation Standard No. 3,

"Commercial Spray-Type Dishwashing Machines".  The single-tank dishwashing machine is capable of handling 50 racks of tableware (1000 dishes) and

other serving utensils per hour and may be either manually or automatically operated.  The multiple-tank dishwashing machine is capable of handling 250 racks of tableware (6,250 dishes) and other serving utensils per hour, depending upon conveyor speed and personnel.  The capacity of the multiple- tank rackless conveyor type dishwashing machine is based on the number of pieces of tableware washed and rinsed per hour.

In the rack-type machine, items of tableware are placed in appropriate racks. The racks are placed on the conveyor.  In the rackless type machine, dishes are placed directly on the conveyor, held in position and supported by pegs

in the conveyor belt (Figure 5).  Other serving utensils are placed in appropriate racks.

Above each wash and rinse tank in a multiple-tank dishwashing machine is a wash and rinse chamber.  The wash and rinse chambers are enclosed in a rectangular housing.  Each chamber is fitted with a battery of spray mani- folds (Item #2, Figure 6), two or more at the top and two or more at the bottom of each chamber.  The bottom manifolds are below or even with the conveyor chains (Item #6, Figure 6), which move the racks through the dish- washer.  Open ends of the chamber housing are fitted with splash curtains. Other splash curtains are located in the interior of the dishwashing chamber.

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