Scotsman MDT5N40 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 DESCRIPTIONHigh Pressure Cut Out Switch: A manual resetswitch sensing the high side refrigeration pressure.It is set to shut the machine off

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

COMPONENT DESCRIPTION: Control BoxCircuit Board:The circuit board receivesinput signals from severalsensors and translates them tocontrol the electric

ELECTRICAL SEQUENCERefer the wiring diagram as needed.The “Power” light on the board glows wheneverthere is power to the machine (and the masterswitch

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 VendingDispensing takes place when theTouch Free sensor’s infrared beambounces back to the sensor from acontainer placed directly in fr

MDT5N25 & MDT5N40May 2001Page 17DISPENSE AREA SANITATIONThe dispense area; spouts, sink, grill and splashpanel will need periodic cleaning and mai

CLEANING and SANITIZINGA Scotsman Ice System represents a sizable investment of time and money in any company’sbusiness. In order to receive the best

MAINTENANCE AND CLEANING1. Air Cooled Models: Check the air cooledcondenser for lint, dirt or grease build-up. Cleanwith vacuum or soft brush until li

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

MAINTENANCE AND CLEANINGIn some areas, the water supply to the ice makerwill contain a high concentration of minerals, andthat will result in an evapo

MDT5N25 & MDT5N40May 2001Page 21SERVICE DIAGNOSISSymptom Possible Cause Probable CorrectionNo ice made, nothing operates Unit off due to no power

MDT5N25 & MDT5N40May 2001Page 22Symptom Possible Cause Probable CorrectionNo water is vended Check ice vending system, if noice will dispense, che

MDT5N25 & MDT5N40May 2001Page 23Explanation of Indicator Light Position OnBoardName and Meaning ofLight or ResetOn at all times when the master sw

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.)1. Remove the electrica

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

REFRIGERATION SERVICE: R-404A (HP62)THIS ICE MACHINE USES HP62 REFRIGERANTAND POLYOLESTER COMPRESSOR OIL.DO NOT USE MINERAL OIL IN THISREFRIGERATION S

MDT5N25 & MDT5N40May 2001Page 31REFRIGERATION SERVICEGeneral Information:Work on the refrigeration system should only bedone when it is certain th

MDT5N25 & MDT5N40May 2001Page 32CIRCUIT BOARD SERVICEPrinted Circuit Board Handling PrecautionsFollow these simple precautions when replacing aPri

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: The recommended watersupply is clean, cold water. Use 3/8" O.D. coppe

FOR THE ELECTRICIANCONFORM TO ALL APPLICABLE CODESThe electrical power to the unit issupplied through the junction box at therear of the machine.Check

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