User manual SCOTSMAN FDE470

[. . . ] FDE470 FDE470 SERVICE 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. 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. When ice is needed, a motor rotates a stainless steel vane inside the storage bin and sweeps the ice into the spout. Table of Contents Specifications: . [. . . ] Replace all panels and reconnect electrical power. August 1994 Page 14 FDE470 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. 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. See Bearing Removal and Replacement. Adapter Stand Water Seal Coupling Bottom Bearing Breaker Screws Snap Ring A ge r u & Be a r i n gs Cap Cap Screw Washer Top Bearing Set Breaker Auger August 1994 Page 15 FDE470 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. If mineral scale is found on the auger's surface, clean off the auger with ice machine cleaner and a scrubbing pad. Note: The top bearing used in the FDE470 is a "directional" bearing. Note which way the inner race is configured and install into the breaker. The breaker is also available as a replacement part with the top bearing already installed. The bottom bearing must be removed from the evaporator when replacing the water seal. Remove the three bolts holding the evaporator to the gear motor adapter and lift the evaporator up slightly. Replace the water seal and install a new bearing set if needed. Outer Race Open Sides To replace the water seal: 1. Place a bead of food grade sealant (such as Scotsman part number 19-0529-01) onto the shoulder of the auger where the rotating half of the water seal will be installed. While wet, slip it onto the bottom of the auger, rubber side toward the auger. Do not allow any sealant to come into contact with the face of the seal. Slip it up into the bottom of the evaporator until the bottom of the seal is inside the evaporator about 1/4". Push the bottom bearing against the water seal until the bottom bearing is inside the evaporator about 1/16". Replace the evaporator on the adapter, and re-attach the stand using the original bolts. Return the auger to the evaporator and slide it down until the splines touch the coupling. Inner Race Wider on Top 9. [. . . ] Use a 3/16" allen wrench to open and close the valve. Stem Cap Torque to 8-12 ft. lb. As with any other refrigerant, do not place pressurized air or oxygen into the refrigeration system. Note: The refrigeration system uses an HFC type refrigerant and MUST use an HFC type drier. Evacuation to 200 microns is recommended. Temperature Pressure Chart, Selected Points Temperature in 0F. [. . . ]