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Double-tank Method - 14163_94
Mess Management Specialist 1 & C - Military manual for maintaining a mess hall
Descaling Dishwashing Machines - 14163_96
prewash,  wash,  and  rinse  sections.  The  final  rinse should always remain the same (180°F to 195°F). OPERATING THE DISHWASHER The first thing you should do is to read and become familiar with the operating instructions included on the instruction plate that is mounted on the hood of the machine   you   are   operating.   Always   follow   these instructions. Otherwise,  you  may  damage  the equipment  or  injure  yourself  and  others. The following detailed instructions are given for double-tank  machines  since  most  machines  in  service are of this type. These directions are also generally applicable to single-tank units, except for wash and rinse time intervals and temperatures. 1.  Inspect  the  machine  to  make  sure  the  scrap screens are in place, spray arms are capped and adjusted so that the spray hits the utensils directly, and splash curtains are in place and not hanging closer than 5 inches to the conveyor. 2. Close the drain valves to the wash and rinse sections of the machine. Open the hot water  fill valves and fill the tanks to the full mark on the water level indicator. 3.   Open   the   steam   valves   and   allow   the temperature of the water to reach 180°F. Adjust the mixing  valve  to  the  HOT  position  to  maintain  a temperature range of 180°F to 195°F. On machines with hot water booster heaters installed, open the hot water and steam valve to the booster heater. 4.  On  machines  without  automatic  detergent dispensers,  add  the  prescribed  amount  of  detergent. 5. Push the START button to start the pumps and conveyor  and  run  the  machine  for  2  minutes  to thoroughly mix the detergent and bring the temperature of the wash tank up to 140°F or above. 6. Look inside the ends of the machine to make sure the  power  sprays  are  operating  properly. 7. During the operation of the machine keep a close check on the temperature gauges and make sure they are within  the  following  temperature  ranges: l l l 8. Wash: 140°F - 160°F Rinse:  180°F-195°F Final rinse: 180°F - 195°F Place the dishrack on the conveyor carefully and allow  the  conveyor  to  push  the  rack  through  the 4-21 machine. If the conveyor is properly set, the utensils will receive a 20-second wash and a 20-second rinse. 9.  As  the  dishrack  approaches  the  end  of  the machine, it will pass a lever that will actuate the final rinse. Observe the final rinse temperature gauge for correct  temperature  (180°F-  195°F). 10.  Allow  all  dinnerware  and  silverware  to  air  dry for at least 1 minute after passing through the machine. 11. Place the clean, air-dried dinnerware and trays bottom side up in a clean storage cabinet or dispenser. 12. Place an empty cylinder over clean, air-dried silverware; invert and place in a clean storage cabinet. 13.  For  every  30  to  45  minutes  of  continuous machine operation, the wash tank should be drained and the   scrap   trays   cleaned.   Check   the   machine temperatures  frequently  using  a  pocket  thermometer (0°F-200°F) to assure the accuracy of the temperature gauges. The  washing  of  silverware  is  often  unsatisfactory because too much silverware is placed in the rack to be thoroughly  cleaned.  The  proper  procedure  for  washing the silverware is to sort the silver and place 15 to 20 pieces  in  each  cylinder-shaped  compartment;  run  the silverware through the dishwashing machine with the service end up. When the wash-rinse cycle is complete, the sanitized silver should be stored by inverting it in the cylinder-shaped  containers;  thereby  the  washing  and sanitizing is done without having to touch the utensils. CLEANING THE DISHWASHING MACHINE The  dishwashing  machine  must  be  thoroughly cleaned  after  each  meal  or  use. The   following procedures  are  to  be  followed: 1. Turn the machine off. 2. Secure the steam and hot water valves to the final rinse mixing valve, or the steam and hot water valves to the hot water booster heater. 3. Add 3/4 to 1 1/2 cups of dishwashing machine detergent to the rinse tank, depending on the capacity of the rinse tank. 4. Turn the machine on and allow it to operate for 5 minutes. 5. Turn the machine off and secure the steam valve to the rinse tank.

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