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Scotsman MDT5N User Manual

Scotsman MDT5N
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Ice Maker - Dispensers
Technical Training
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Scotsman MDT5N Specifications

General IconGeneral
Ice TypeNugget Ice
Weight130 lbs
Voltage115V
Drain Connection3/4" FPT
Power Supply115V/60/1
Ice Production (24h)1, 000 lbs
TypeModular Ice Maker
Dimensions (H x W x D)30 in x 48 in x 24 in

Summary

Presentation Topics

Topic 1: Nugget Ice Maker Dispensers

Covers MDT5N and MDT6N models of Nugget Ice Maker Dispensers.

Topic 2: Flaked Ice Maker Dispensers

Focuses on MDT3F and MDT4F models of Flaked Ice Maker Dispensers.

Topic 3: Cubelet Ice Maker Dispenser

Details the MDT2 model of Cubelet Ice Maker Dispenser.

Model Number Scheme

Decoding the Model Number

Explains the components and meaning of the MDT model number scheme (e.g., MDT5N40A-1J).

MDT Nugget Dispenser Models

MDT5N Nugget Dispenser

Specific details for the MDT5N Nugget Dispenser, including the MDT5N40 taller variant.

MDT6N90 Dispenser Features

Large Capacity Touch-Free Operation

Highlights the large capacity and touch-free dispensing feature of the MDT6N90.

Pitcher Filling Capability

Describes the MDT6N90 as ideal for filling pitchers.

MDT5 and MDT6 Dispensing Stations

Dual Dispensing Spouts

Details the two dispensing stations: one for Ice and one for Water.

MDT5 Dispensing Operation

Sensor and Spout Placement

Instructions on placing a container in front of the sensor and under the spout for dispensing.

Touch-Free Operation Explained

Infrared Triangulation System

Explains the 'infrared triangulation' position control mechanism for touch-free dispensing.

Beam Interruption Trigger

Describes how reflected infrared light triggers sensors and dispensing.

MDT5 Internal Components Overview

Control Box and Reservoir

Identifies the control box, reservoir, and ice storage bin behind the front panel.

MDT5 Control Box Components

Electrical Components

Lists key electrical components: Contactor, Compressor Relay, and Control Board.

Touch Free Control Board Indicators

Indicator Light Functions

Lists indicator lights: Power, Bin Empty, Off Timer, and No Water.

Control Board Power and Bin Empty Lights

Power Light Status

Explains the Power Light illuminates when power is supplied to the board.

Bin Empty Light Status

Explains the Bin Empty Light illuminates when the ice bin is not full.

Control Board OFF Timer Light

OFF Timer Light Function

Describes the OFF Timer light as ON when the unit shuts off, with a 6-minute restart delay.

Control Board No Water Light

No Water Light Function

Explains the No Water Light illuminates when the water sensor is dry.

Water Level Sensor

Thermistor Type Sensor

Identifies the water level sensor as a thermistor type.

MDT Bin Level Control System

Electric Eye Operation

Explains the electric eye bin level control using infrared sender/receiver.

Shutdown and Restart Logic

Details how ice blockage triggers shutdown and a 6-minute restart delay.

MDT5 Storage Bin Components

Storage Bin Cover and Sensor

Identifies the storage bin cover, infrared sensor, and mounting socket.

MDT5 Photoelectric Eyes Location

Eyes in Bin Cover

Specifies that the photoelectric eyes are located within the bin cover.

Inside the Ice Storage Bin

Internal Bin Components

Identifies components within the ice storage bin: chute, vane, and bottom.

Inner Bin Bottom and Dispensing Vane

View of Bin Interior

Shows the inner bin bottom and dispensing vane from a top-down view.

Ice Dispensing Vane Operation

Vane Construction and Removal

Describes the electro-polished vane, its mounting, and removal process.

MDT5 Bin Bottom Removability

Sanitizing Access

Highlights that the bin bottom is removable for easier sanitizing.

MDT6 Solenoid Dispensing Door

Unique Dispensing Mechanism

Identifies the MDT6 as the only model with a solenoid-operated dispensing door.

MDT Reservoir Components

Float Valve and Water Sensor

Details the reservoir's float valve, water flow to evaporator, and thermistor level sensor.

Ice Making Components

Key Component Specifications

Lists components like stainless steel evaporator, extruder, auger, and top bearing.

Auger Removal Procedure

Step-by-Step Auger Removal

Outlines steps for auger removal: chute cover, ice sweep, and breaker cover.

MDT5/MDT6 Top Bearing Check

Bearing Lubrication Inspection

Instruction to check the top bearing for proper lubrication.

MDT5/MDT6 Auger and Breaker Removal

Auger and Breaker Removal Steps

Details steps to remove the chute, breaker bolts, and auger stud.

MDT5/MDT6 Auger Removal Method

Auger Extraction Technique

Instructs to pull UP to remove the auger assembly.

MDT5/MDT6 Auger Construction

Auger Design Features

Describes the double-spiral design, segmented flights, and shaft flats.

MDT Auger Water Seal

Face Type Seal Operation

Explains the face-type auger water seal, its rotating and stationary parts.

MDT5/MDT6 Top Bearing Construction

Top Bearing Design Details

Details the double-row bearing, housing, seals, and thrust absorption.

Maintenance Procedures

Cleaning and Sanitizing Tasks

Covers cleaning auger/evaporator and sanitizing water system/ice bin.

Mechanical Maintenance Tasks

Includes cleaning condenser and checking/greasing bearings/couplings.

Auger Service: Scale Identification

Visual Scale Indicator

Shows an image of scale buildup on the auger.

MDT Touch-Free Sensors

Sensor Features and Location

Describes sensor attachment, foam cover, replacement, and switch location.

MDT5/MDT6 Accessible Parts

Components Visible After Panel Removal

Lists accessible parts: condensing unit, access valves, and bin drive motor.

MDT5 Dispense Drive Motor

Dispense Motor Identification

Shows and identifies the dispense drive motor for the MDT5.

MDT5/MDT6 Refrigeration Details

Refrigerant and Pressure Specifications

Details refrigerant type R-404A and typical operating pressures.

Product Updates

Compressor and Ice Chute Revisions

Information on compressor change (late 2010) and ice chute update (Nov 2010).

MDT Series Summary

Key Model Characteristics

Summarizes MDT/TDE touch-free actuation, electric eye control, and component materials.

Topic 2: Flake Ice Maker Dispensers

MDT3F12 and MDT4F12 Models

Introduces the MDT3F12 and MDT4F12 Flake Ice Maker Dispensers.

MDT3F and MDT4F Features

Dispenser Design and Operation

Highlights compact design, touch-free dispensing, taller cabinet, and quiet operation.

MDT2, MDT3F, MDT4F Model Overview

Model Refrigerant and Control Systems

Details refrigerant (R-134a), electric eye controls, and touch-free operation.

Ice Type Differentiation

Distinguishes MDT2 (cubelet) from MDT3F/MDT4F (flaked) ice types.

MDT3 and MDT4 Series Details

Compact Counter-Mounted Design

Describes them as compact dispensers designed for counter mounting with available wall kits.

Touch Free Control Board Functions

Control Board Responsibilities

Outlines the control board's role in ice making, ice dispensing, and water dispensing.

MDT3 and MDT4 Water System

Water Level Sensing

Details water control, float valve, and the thermistor water level sensor.

MDT3 and MDT4 Compressor and Service

Compressor Type and Service Access

Identifies the Tecumseh R-134a compressor and service valve locations.

MDT3 and MDT4 System Pressures (R-134a)

Operating Pressure Ranges

Specifies suction pressure (11-13 PSIG) and discharge pressure (120-135 PSIG).

Maintenance Schedule

Cleaning and Sanitizing Tasks

Ensures auger is shiny, evaporator is scale-free, and sanitizes reservoir/evaporator/bin.

Mechanical Maintenance Tasks

Includes cleaning condenser, checking bearing, and greasing coupling.

Flaker Service: Evaporator Scale

Visual Scale Indicator on Evaporator

Shows an image of scale buildup inside the flaker evaporator.

Topic 3: Cubelet Ice Maker Dispenser

MDT2C12 Cubelet Ice Dispenser

Introduces the MDT2C12 Cubelet Ice Maker Dispenser.

MDT2C12 Features

Cubelet Ice and Touch-Free Operation

Highlights cubelet ice form, portion control, touch-free, and air-cooled design.

Operation: Control System and Sensors

Electronic Control Board

Manages ice making process based on sensor data.

Ice Level Sensor

Monitors ice level in the storage bin.

Water Level Sensor

Monitors water level in the reservoir.

Condenser Temperature Sensor

Controls fan operation based on condenser temp.

Evaporator Temperature Sensor

Monitors evaporator temp on suction line.

Auger Motor Rotation Sensor

Senses auger motor rotation and direction.

MDT2 Controls: Water Level

Water Level Sensing Components

Identifies the water level sensor and conductivity probes.

MDT2 Ice Level Sensor

Infrared Sensor View

Shows the infrared ice level sensors viewed from below.

MDT2 Evaporator Sensor

Evaporator Sensor Location

Highlights the location of the evaporator sensor.

MDT2 Condenser Sensor

Condenser Sensor Location

Highlights the location of the condenser sensor.

MDT2 Magnetic Sensor

Magnetic Sensor Identification

Shows and identifies the magnetic sensor used in the MDT2.

MDT2 Water Reservoir

Reservoir Components

Identifies the water reservoir, float valve, and water level sensor.

MDT2 Mechanical: Auger Coupling

Auger Coupling Function

Explains the auger coupling slips when the motor runs backwards for safety.

MDT2 Bearings and Seals

Bearing and Seal Components

Identifies top bearing, thrust washer, water seal, and bottom bearing.

MDT2 Auger Details

Auger Material and Assembly

Describes the stainless steel auger and its attachment to the breaker.

MDT2 Breaker Details

Breaker Function and Features

Explains ice extrusion, top bearing containment, and alignment bushing.

MDT2 Control Board Indicator Lights

Bin Status Indicators

Lights for Bin Empty and Bin Full status.

Temperature Alert Indicators

Lights for High Condenser or Evaporator Temperature alerts.

Auger Motor Status Indicator

Light indicating auger motor operation status.

Power and No Water Indicators

Lights indicating unit power status and water supply.

MDT2 Power Up Status

Startup Indicator Logic

Shows control board lights during power up, including bin empty status and 3-minute wait.

MDT2 Normal Operation Status

Normal Operation Indicators

Illustrates control board lights during normal operation, showing bin empty status.

MDT2 Error: High Condenser Temp

High Condenser Temperature Error

Indicates error state for high condenser temperature when steady.

MDT2 Error: Auger Motor/Evaporator Temp

Auger Motor or Evaporator Temp Error

Indicates errors for auger motor not turning or high evaporator temperature.

MDT2 No Water Status

No Water Indicator Status

Shows the control board lights indicating a 'No Water' condition.

MDT2 Bin Full Status

Bin Full Indicator Status

Shows the control board lights indicating the ice bin is full.

Scotsman Ice Systems Product Range

Overview of Product Categories

Lists various product lines including cubers, flakers, dispensers, and storage bins.

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