User manual SCOTSMAN MDT3F12

[. . . ] MDT3F and MDT4F Manual Purpose of this manual: To provide detailed installation and operation instructions; to give insights into how the machine works; to list possible causes for problems; and to suggest procedures for specific types of service. MDT3F & MDT4F The MDT3F and MDT4F are combination ice makers and dispensers. The refrigeration system is air cooled, using R-134a as a refrigerant. The control system uses electric eyes as a bin control and a water level sensor as the water safety control. As ice is made, it fills a plastic storage bin. [. . . ] The sink should be flushed with hot water and wiped clean with sanitizer. The splash panel requires special attention to clean it. ·Push and release the Cleaning Switch located to the left of the ice spout. This disables the Touch Free Sensor so the splash panel may be cleaned without vending ice or water. MDT3F & MDT4F ·Wash the splash panel and wipe with sanitizer. ·Re-push the clean switch or allow 2 minutes to pass for the Touch Free system to reset. Push Touch Free Sensor Disable Button Before Wiping Splash Panel Pour Hot Water Into Sink Regularly To Keep Drain Line Open May 2001 Page 15 MDT3F & MDT4F Auger and Bearing Inspection While in most areas regular in-place cleaning with Scotsman Ice Machine Cleaner will be adequate to keep the interior of the evaporator free of excessive mineral build up, some water conditions may require more intense methods. In addition, the auger bearings require physical inspection to determine that they are not wearing. This physical inspection is recommended twice per year for the top bearing and once per year for the auger and both bearings. Whenever the auger is removed, replacement of the water seal is recommended. If a bearing requires replacement, the other bearing must also be replaced. Unplug or disconnect electrical power. Rotating Parts Hazard Disconnect Electrical Power Before Beginning Breaker Screws Snap Ring Cap Cap Screw Washer Top Bearing Set Breaker Auger 2. Remove 2 permagum plugs from the side of the evaporator. Remove 2 screws (screwheads were covered by the permagum). Pull up on the pull ring to remove the auger. Remove the breaker cover by taking the snap ring out. Use threaded rod or a slide hammer puller and screw into the auger, slide the weight quickly up against the stop to remove the auger. If the auger still will not move, bearing replacement is mandatory. See Bearing Removal and Replacement. Adapter Stand Bottom Bearing Water Seal Coupling May 2001 Page 16 Inspection: Auger The auger is made of stainless steel. It has a polished surface that may be either shinny or dull, but must be smooth. After removal, allow the auger to dry to inspect for scale. If mineral scale is found on the auger's surface, clean off the auger with ice machine cleaner and a scrubbing pad. Remove the water seal and clean off the shoulder of the auger. Bearings: The top bearing should spin freely with no rough spots. [. . . ] Disconnect the electrical wires from the centrifugal switch. Drain the evaporator and reservoir. Rotor Cover & Bearing Rotor Bearing Shaft Seals Fan Stator E-Clip Woodruff Key Rotor Output Gear Gear Reducer Components Gear Case May 2001 Page 27 MDT3F & MDT4F Auger Drive Motor The windings or top bearing & cover may be replaced without removing the evaporator or gear reducer from the machine. Pull and/or tap on the pliers to pull the rotor & bearing out of the gear reducer. Electrical Shock Hazard Disconnect electrical power before beginning. [. . . ]