Scotsman NDE754 Wartungshandbuch Seite 1

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

Control BoxContactor: A definite purpose contactorconnecting the compressor to the power supply.Circuit Board: Controlling the ice machinethrough sens

ELECTRICAL SEQUENCEThere are 7 indicator lights on the control board:·WTR-OK. Water OK. Normal = Glowing. Glowswhen there is water in the reservoir.·P

OPERATION: WaterWater enters the machine through the 3/8" maleflare at the rear of the cabinet, goes to a strainerand then to the water reservoir

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 filler lever ispushed, an electrical circuit is made to the icechute door solenoid causing the ice

CLEANING and SANITIZINGIt is the USER’S RESPONSIBILITY to see that the unit is properly maintained. It is always preferable, andless costly in the lon

SENSOR MAINTENANCE1. The ice machine senses water level by a probelocated in the water reservoir. At least twice a year,the probe should be removed fr

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·

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

NDE754March 2000Page 19SERVICE DIAGNOSISSymptom Possible Cause Probable CorrectionNo ice is made, nothing operates Unit off due to no power Restore Po

FOR THE INSTALLER: SpecificationsThis ice maker-dispenser is designed to bemounted on a machine stand, or a countertop.Before beginning the installati

NDE754March 2000Page 20CONTROL SYSTEM DIAGNOSTICSThe control system consists of:·Control Board·Water Sensor·Ice Sensors·High Pressure Cut Out·Low Pres

REMOVAL AND REPLACEMENTWATER RESERVOIR1. Shut off the water supply to the icemaker.2. Remove front panel and reservoir cover.3. To remove float only,

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.)1. Remove the electrica

NDE754March 2000Page 27REFRIGERATION SERVICEGeneral: This ice machine uses R-404A refrigerantand polyolester oil. Do NOT use mineral oil in thisrefrig

FOR THE INSTALLERLocationThis ice system is designed to be installed indoors,in a controlled environment.Minimum MaximumAir Temp 500F. 1000F.Water Tem

FOR THE PLUMBERCONFORM TO ALL APPLICABLE CODESWater InletAir Cooled Models: Connect a clean, potableand cold water supply to the38” male flare at theb

FOR THE ELECTRICIANCONFORM TO ALL APPLICABLE CODESConnect the electrical power supply for the unit tothe wires in the junction box at the rear of them

FOR THE INSTALLER: Final Check List1. Is the icemaker-dispenser installedindoors, in a location where the air andwater temperatures are controlled, 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

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