N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522Air, Water or Remote Service ManualRepair Procedures: The Water Seal(Assuming all steps to remove the auger have been To Replace the Water Seal:performed.) 1. Lubricate the water seal with a thin coating of food1. The gear reducer/evaporator assembly will have to grade grease or oil, and push the water seal into thebe exposed. bottom of the evaporator slightly past the groove for the snap ring.2. Remove the 4 hex head cap screws holding theevaporator to the gear reducer assembly. Lift the 2. Replace the snap ring and pull the water seal downevaporator up and off of the gear reducer. against it. 3. The part of the water seal that rotates with the auger must also be replaced. Remove the old part from the auger and clean the mounting area. 4. Place a small bead of food grade silastic sealant Sealant3. Remove the snap ring or wire retainer from thegroove under the water seal.Snap Ring Bottom of (such as 732 RTV or Scotsman part number 19-0529- Stationary 01) on the area of the auger where the water seal is Water Seal to be mounted. 5. Carefully push the water seal (rubber side against the auger shoulder and the silastic sealant). Do not get any sealant onto the face of the seal. 6. Allow the auger and seal to air dry until the sealant is dry on the surface. 7. If the original water seal was leaking, it would be a good idea to inspect the interior of the gear reducer.4. Pull or drive out the lower half of the water seal.Tip: Push one side of seal in so the seal is turned 90degrees to the evaporator and pull it out. December 2014 Page 51
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522Air, Water or Remote Service ManualRepair Procedures: The gear reducer(Assuming that the procedures through removal of the the cover onto the lower case, cover will have to bewater seal have been performed.) moved closer to the second gear after the output gear has cleared the second gear top bearing.Electrical Shock Hazard 5. After the case is together, and the locating pins are secure in both ends, replace all cap screws.Disconnect electrical 6. Bench test the gear reducer, check for oil leaks,power before beginning noise, and amp draw.1. Remove the electrical wires from the gear drive Replacement Drive Motormotor. Gear case cover assembly2. Unscrew the 4 cap screws holding the gear reducer Gear case with First and Second Gearsto the ice machine.3. Remove the gear reducer from the icemaker.To Inspect the gear reducer.1. Remove the cap screws holding the gear reducercase halves together and pry the two cases apart.2, To lift off the cover, lift up until you can feel internalcontact, then pull the cover towards the output gearend, and then lift the cover (with drive motor attached)up and away from the gear reducer case.Note: The case cover output gear, bearings, and shaftare one pressed together assembly. Replace as aunit.3. Inspect the oil, gears, and bearings. If the oil leveland condition is acceptable, quickly check the gearsand bearings. They are likely to be fine if the oil is.If there is evidence of water in the oil (rusty bearingsand gears; the oil having a creamy white appearance;oil level too high) carefully inspect the bearingsand gears. If in doubt about the condition of a part,replace it. The oil quantity is 14 fluid ounces, do notoverfill.Note: The gears and bearings are available only aspressed together sets.4. After replacing parts as required, (if any)reassemble the gear case and cover. The two smallergears and the oil should be in the lower case, theoutput gear will be with the cover. As you lower December 2014 Page 52
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522Air, Water or Remote Service ManualRepair Procedures: Replace the Evaporator:(Assuming all the steps for removal of the thrust Repair Procedures: Thermostatic Expansion Valvebearing, breaker, auger, and water seal have been 1. Remove front panel.performed.)1. Recover the refrigerant from the ice maker. 2. If the machine was in operation, push and release the off button to shut it down.2. Unsweat the refrigerant connections: 3. Disconnect electrical power.a) At the thermostatic expansion valve outlet. 4. Recover refrigerant.Heat sink the TXV body when unsweating orresweating the adjacent tubing. 5. Remove insulation covering expansion valve and bulb.b) At the suction line at the joint about 3\" from theevaporator. 6. Remove strap securing bulb to suction line.3. Remove the evaporator. 7. Unsweat the expansion valve from the liquid line. Remove it.4. Unsweat the drier from the liquid line. 8. Unsweat the drier from the liquid line. Remove it.5. After installing a new water seal in the newevaporator (see “To Replace the Water Seal”) sweat 9. Connect nitrogen to discharge access valve.in the new evaporator at the old tubing connections. 10. Immediately place new valve in ice machine.6. Install an new drier in the liquid line. 11. Open nitrogen bottle and braze expansion valve7. Evacuate the system until dehydrated, then weigh inlet and outlet joints together. Braze new drierin the nameplate charge. Check for leaks. into system.8. Install auger, breaker, breaker bearing assembly, 12. Shut off nitrogen, shut access valves.and ice discharge chute in reverse order of 13. Evacuate to at least 300 microns.disassembly.To Reassemble the Evaporator and Auger 14. Weigh in the nameplate charge. Check for leaks.1. After the gear reducer has been inspected, fasten 15. Attach bulb to suction line. Position at 4 or 8the evaporator to the gear reducer. Torque the bolts to o'clock on the tube. Secure tightly but do not crush110 inch pounds. the bulb with the strap.2. Lower the auger into the evaporator barrel, slightly 16. Attach valve and bulb insulation.turning it to match up with the drive end. Do Not Drop 17. Reconnect electrical power.Into the Evaporator. 18. Return all panels to their original positions.3. Complete the reassembly by reversing thedisassembly for the breaker & thrust bearingassembly. December 2014 Page 53
SCOTSMAN ICE SYSTEMS 775 Corporate Woods Parkway Vernon Hills, IL 60061 800-726-8762 www.scotsman-ice.com291-855
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