LAUNDRY EQUIPMENT

9G6810-00-264-6722 Orthophosphoric acid 85 percent technical, 7-pound bottle 9Q7930-00-282-9699 Detergent, general- purpose, 1-gallon can 9Q7930-00-985-6911 Detergent, general- purpose, 5-gallon pail You should know the capacity of the dishwashing machine tanks. Measure (in inches) the inside dimensions of each tank and apply the following formula: length X width X depth (to water line) 231 = capacity in gallons. Steps and key points in descaling the machine: Steps and key points in descaling the machine. 1. 2. 3. 4. 5. 6. Fill the tanks halfway to the overflow level with hot, clean water. If tanks do not have water level indicators, remove a section of the scrap tray in each tank so that you can see the overflow pipe. Add the required amount of acid and detergent to the water to prepare the cleaning solution. Measure amounts carefully. Use 7 fluid ounces of orthophosporic acid 85 percent plus 1/2 fluid ounce detergent, general purpose. Use this measure for each gallon capacity of the tank when it is filled to the overflow level. Complete filling the tanks. Fill to the overflow level. Put scrap screens, spray pipes, and splash curtains in place. Remove scale deposits on all attachments. Turn on the machine. Operate the machine at the highest permissible operating temperature for 60 minutes. Turn off and drain the machine. Open the drain valves and allow all the cleaning solution to drain from the tanks. 7. Refill. Use fresh hot water. 8. Turn on the machine. Operate the machine at the highest temperature for 5 minutes. Repeat steps 7 and 8 several times. Repeat the entire method at such intervals as may be required for operation of the dishwashing machine. LAUNDRY EQUIPMENT Equipment used to clean, dry, and press clothing includes washers, extractors, dryers, dry-cleaning machines, and various types of presses. Most of the maintenance on this equipment is concerned with inspecting and lubricating the various parts. Most laundry equipment is equipped with a number of safety devices. If disabled, these safety devices can and have caused shipboard fires and damage to equipment, clothing, and personnel. Pay special attention to these safety devices during preventive and corrective maintenance. Pay extra special attention to those devices designed to protect operator personnel. SUMMARY This chapter covered refrigeration equipment, cooling systems, air compressors, purifiers, and lubrication, electrohydraulic drive machinery, and weight-handling equipment. It also covered galley equipment, including steam kettles and dishwashers. Laundry equipment was covered briefly since most of your work is limited to inspection and lubrication. Think back over these broad areas. If you feel that you do not have a general understanding of your rate as it relates to a specific type of equipment, go back now and review that section. 10-54