Describe the meaning, usage and care of a dishwashing machine

Proper operation and care of dishwashing machines are vital to the sanitation, safety, and efficiency of activities, so one must know the machines and follow directions for their use and maintenance.

Operation

Read and become familiar with the operating instructions included on the instruction plate that is mounted on the hood of the machine one is operating. Always follow these instructions otherwise, you may damage the equipment or injure yourself and others.
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: 8. Wash: 140°F - 160°F Rinse: 180°F-195°F Final rinse: 180°F - 195°F Place the dish rack on the conveyor carefully and allow the conveyor to push the rack through the machine. If the conveyor is properly set, the utensils will
receive a 20-second wash and a 20-second rinse.
9. As the dish rack 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 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. 6. Open the drain valves to the wash and rinse tanks; open the doors and allow the machine to cool.
7. Remove the doors, scrap screens, metal frames, wash and rinse spray arms, pump intake strainer, drain strainer, and splash curtains. Wash thoroughly in the utensils wash sink and rinse.
8. Using hand-dishwashing detergent and water with a nylon-bristled brush, thoroughly clean the inside and outside of the machine. Rinse with clean water to remove all loosened dirt and detergent.
9. Reassemble the machine, close the drain valve to the wash and rinse tanks. 10. Fill the tanks one-half full of water, open the steam valve to the rinse tank and allow the temperature to reach 180°F.
11. Turn the machine on and operate for 5 minutes without detergent. 12. Turn the machine off, close the steam valve to the rinse tank, and open the drain valves to the wash and rinse tanks.

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Titany answered the question on September 10, 2021 at 07:23