Scotsman Ice MDT5N25, MDT5N40 service manual Component Description

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ICE LEVEL SENSORS

MDT5N25 & MDT5N40

COMPONENT DESCRIPTION

High Pressure Cut Out Switch: A manual reset switch sensing the high side refrigeration pressure. It is set to shut the machine off if the discharge pressure should ever exceed 450 psig.

Evaporator: A vertical stainless steel tube, refrigerated, and water filled. In it there is a stainless steel auger.

Reservoir: Float operated, it maintains the water level in the evaporator at a constant level, it also contains the water level sensor.

Water Level Sensor: Senses if there is water in the reservoir to make ice out of. Will shut the machine off it there is none.

Ice Level Sensor: An electronic “eye”, it senses the presence of ice in the

bottom of the ice discharge chute. Operates to turn the ice machine on and off automatically as the level of ice in the bin changes.

Drain Tube: When uncapped and lowered, drains the evaporator.

Condenser: Air or water cooled, where the heat removed in ice making is discharged.

Ice Storage Bin Assembly: A plastic lined, insulated cylinder that receives, stores and dispenses the ice. Fresh ice enters at the top, and when the bin is full enough the ice will be between the ice level sensors, and the ice making will stop. Ice is dispensed through a chute at the bottom front when the bin vane sweeps the ice over the chute.

CONDENSER

May 2001

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WATER LEVEL

SENSOR

EVAPORATOR

RESERVOIR

DRAIN TUBE

HIGH PRESSURE

CUT OUT

ICE STORAGE BIN

TOUCH FREE SENSOR

Image 10 Contents
Table of Contents IntroductionMDT5N25 & MDT5N40 Minimum Maximum For the Installer Environmental LimitationsInstallation Limitations Service Limitations Water LimitationsCounter Top or Machine Stand Installation For the InstallerMachine Stand Installation Unpack and install the ice and water spoutsFor the Installer Wall Mount Kit For the Plumber Conform to ALL Applicable CodesFor the Electrician For the Installer Final Check List Pre Start Inspection Initial Start UPStart Up Component Description ICE Sweep Bearing Breaker Motor Evaporator Auger Water Seal Circuit Board On/Off Switch ManualComponent Description Control Box Potential RelayStart up consists Splash panel cleaningElectrical Sequence Shut Down consistsOperation Water Refrigeration Schematic Operation RefrigerationOperation Ice Vending ContainerDispense Area Sanitation Scotsman Ice Machine Cleaner contains acids Cleaning and SanitizingTo Sanitize Check and tighten all bolts and screws Maintenance and Cleaning Moving Parts HazardService Diagnosis Symptom Possible Cause Probable CorrectionMDT5N25 & MDT5N40 Off Timer Service Diagnosis Circuit BoardPower Bin EmptyRemoval and Replacement BIN Controls Ice Level SensorsRemoval and Replacement Bearing And Breaker To Remove the Breaker Bearing AssemblyTo Remove the Auger To Remove the Water Seal Removal and Replacement Water SealTo Replace the Water Seal To Replace the Evaporator For Access to the Evaporator to Gearmotor boltsTo Reassemble the Evaporator and Auger Electrical Shock Hazard To Remove and Repair the Gearmotor AssemblyTo Inspect the gearmotor Refrigeration Service R-404A HP62 Do not USE Mineral OIL in this Refrigeration SystemGeneral Information Refrigeration ServiceOnly a HFC type dryer should be used Liquid Charging Circuit Board ServicePrinted Circuit Board Handling Precautions Instructions for R-404A