Scotsman Ice MDT5N25 Component Description Control Box, Circuit Board, On/Off Switch Manual

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MDT5N25 & MDT5N40

COMPONENT DESCRIPTION: Control Box

Circuit Board:
The circuit board receives
input signals from several
sensors and translates them to
control the electrical power
supply to the various loads.
The sensors include:
Touch Free ice or water.
Ice level in the bin.
Water level in the reservoir.
The loads include:
Compressor contactor
Fan motor
Bin drive motor
Auger drive motor
Water solenoid.
In addition, a “Clean” switch is	ON-OFF
available to temporarily disable	SWITCH
the Touch-Free sensors for
cleaning of the splash panel.
On/Off Switch: Manual
control for the machine.
Contactor: A definite purpose
contactor connecting the
compressor to the power
supply.
Potential Relay: The
compressor start relay.

START

CAPACITOR

CONTACTOR

POTENTIAL

RELAY

CIRCUIT BOARD

May 2001

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Contents

Table of Contents IntroductionMDT5N25 & MDT5N40 For the Installer Environmental Limitations Installation Limitations Service LimitationsMinimum Maximum Water LimitationsFor the Installer Machine Stand InstallationCounter Top or Machine 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 Initial Start UP Pre Start InspectionStart Up Component Description ICE Sweep Bearing Breaker Motor Evaporator Auger Water Seal On/Off Switch Manual Component Description Control BoxCircuit Board Potential RelaySplash panel cleaning Electrical SequenceStart up consists Shut Down consistsOperation Water Refrigeration Schematic Operation RefrigerationOperation Ice Vending ContainerDispense Area Sanitation Cleaning and Sanitizing Scotsman Ice Machine Cleaner contains acidsTo Sanitize Check and tighten all bolts and screws Maintenance and Cleaning Moving Parts HazardService Diagnosis Symptom Possible Cause Probable CorrectionMDT5N25 & MDT5N40 Service Diagnosis Circuit Board PowerOff Timer Bin EmptyRemoval and Replacement BIN Controls Ice Level SensorsRemoval and Replacement Bearing And Breaker To Remove the Breaker Bearing AssemblyTo Remove the Auger Removal and Replacement Water Seal To Remove the Water SealTo Replace the Water Seal For Access to the Evaporator to Gearmotor bolts To Replace the EvaporatorTo Reassemble the Evaporator and Auger To Remove and Repair the Gearmotor Assembly Electrical Shock HazardTo Inspect the gearmotor Refrigeration Service R-404A HP62 Do not USE Mineral OIL in this Refrigeration SystemRefrigeration Service General InformationOnly a HFC type dryer should be used Circuit Board Service Printed Circuit Board Handling PrecautionsLiquid Charging Instructions for R-404A