Scotsman NDE554 Service Manual

INTRODUCTIONTo the owner or user: The service manual you arereading is intended to provide you, and themaintenance or service technician with theinfor

COMPONENT DESCRIPTIONControl Box: Contains the electrical controls thatoperate the machine.High Pressure Cut Out Switch: An automaticreset switch sens

COMPONENT DESCRIPTIONEvaporator: A refrigerated vertical tube filled withwater and containing a water seal and auger.Auger: A solid stainless steel do

COMPONENT DESCRIPTION: Control BoxContactor: A definite purpose contactorconnecting the compressor to the power supply.Control Board: Controlling the

ELECTRICAL SEQUENCEThere are 7 indicator lights on the control board:·WTR-OK (Water OK). Green. Normal =Glowing. Glows when there is water in thereser

OPERATION: WaterWater enters the machine through the 3/8" maleflare at the rear of the cabinet, goes to the waterreservoir which it enters throug

OPERATION: RefrigerationBeginning at the compressor, the refrigerant iscompressed into a high temperature gas. Thedischarge line directs this gas to t

OPERATION: Ice VendingWhen the ice dispensing glass fillerlever is pushed, an electrical circuitis made the dispense drive motorwhich turns, rotating

CLEANING and SANITIZINGA Scotsman Ice System represents a sizable investment of time and money in any company’s business. Inorder to receive the best

SENSOR MAINTENANCE1. The bin control uses devices that sense light,therefore they must be kept clean enough so thatthey can “see”. At least twice a ye

BEARING MAINTENANCEThe bearing in the breaker should also be checkedat least two times per year.A. Check the bearing by:·removing the ice chute cover·

FOR THE INSTALLER: SpecificationsThis ice maker-dispenser is designed to bemounted on a machine stand, or a countertop, orusing wall mounting kit KWB3

AUGER MAINTENANCEIn some areas, the water supply to the ice makerwill contain a high concentration of minerals, andthat will result in an evaporator a

NDE554 & NDE654March 2000Page 21SERVICE DIAGNOSIS:Symptom Possible Cause Probable CorrectionNo ice is made, nothing operates Unit off due to no po

NDE554 & NDE654March 2000Page 22SERVICE DIAGNOSISSymptom Possible Cause Probable CorrectionWater Leak Drain plugged up Clean out drainTubing crack

NDE554 & NDE654March 2000Page 23CONTROL SYSTEM DIAGNOSTICSThe control system consists of:·Control Board·Water Sensor·Ice Sensors·High Pressure Cut

REMOVAL AND REPLACEMENTWATER RESERVOIR1. Shut off the water supply to the icemaker.2. Remove front panel and reservoir cover.3. Disconnect inlet water

REMOVAL AND REPLACEMENT: Bearing And BreakerNote: Removal of the auger, water seal, evaporatorand gearmotor must begin at the top of theassembly.To Re

REMOVAL AND REPLACEMENTTo Remove the Auger:Turn off the water to the machine, and unclip theevaporator drain hose, pull it down and drain theevaporato

REMOVAL AND REPLACEMENT: Water SealTo Remove the Water Seal:(Assuming all steps to remove the auger havebeen performed.)1. The gearmotor/evaporator as

REMOVAL AND REPLACEMENTTo Replace the Evaporator:(Assuming all the steps for removal of the thrustbearing, breaker, auger, and water seal have beenper

TO REMOVE AND REPAIR THE GEARMOTOR ASSEMBLY(Assuming that the procedures through removal ofthe water seal have been performed.)To Check the Motor:1. R

FOR THE INSTALLER: Environmental LimitationsInstallation LimitationsThis ice system is designed to be installed indoors,in a controlled environment.Mi

NDE554 & NDE654March 2000Page 30REFRIGERATION SERVICEGeneral: This ice machine uses R-404A refrigerantand polyolester oil. Do NOT use mineral oil

FOR THE INSTALLERLocationAfter uncrating and inspection, the unit is ready forinstallation. It is important that the machine beinstalled in a location

FOR THE INSTALLER: Wall Mount KitCAUTIONIt is recommended that the wall mountinginstallation be done by an experienced contractor.The weight of the ma

FOR THE PLUMBERCONFORM TO ALL APPLICABLE CODESWater InletAir Cooled Models: Connect a potable, cold watersupply to the 3/8" male flare at the bac

FOR THE ELECTRICIANCONFORM TO ALL APPLICABLE CODESConnect the electrical power to the unitto the power leads in the junction box atthe rear of the mac

FOR THE INSTALLER: Final Check List1. Is the icemaker-dispenser installed indoors, in alocation where the air and water temperatures arecontrolled, an

INITIAL START UPPre Start Inspection1. Remove the two front panels.2. Check that all shipping blocks have beenremoved.3. Remove any and all packing ta