Scotsman Ice MDT5N40 Electrical Sequence, Start up consists, Shut Down consists, Ice Vending

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MDT5N25 & MDT5N40

ELECTRICAL SEQUENCE

Refer the wiring diagram as needed.

The “Power” light on the board glows whenever there is power to the machine (and the master switch is ON).

If the machine is switched off at the master switch, but is otherwise ready to go, switching the master switch to ON does the following:

￿The bin empty and power lights on the circuit board glow.

￿There is a 15 second delay

￿If there is enough water in the reservoir, the circuit board will allow the machine to start up.

Start up consists of:

￿The compressor contactor coil receives power from the circuit board.

￿The contactor is energized, connecting power to the compressor, and the compressor starts.

￿The auger motor receives power from the circuit board and starts.

￿As ice goes past the ice level sensors, the bin empty light will stay on and the machine will continue to run, unless the ice stays between the sensors for more than 15 seconds (bin full). At that point, the bin empty light goes out, and the machine shuts down.

Other reasons for shut down:

￿Low water level (as sensed by the thermistor in the reservoir).

Shut Down consists of:

￿The compressor contactor opens

￿The compressor stops

￿The auger motor is run by the circuit board for 2 more minutes, clearing out ice in the evaporator, and then

￿The auger motor no longer receives power from the circuit board, and the auger motor stops.

After a 6 minute delay, If the ice level sensor is clear (bin empty) for more than 15 seconds, the machine will start up again.

Another purpose of the circuit board is to turn the machine off if there is not enough water in the machine.

￿When the water level in the reservoir falls below the tip of the water level sensor, the machine will “shut down”

￿After a 6 minute delay, if the water refills the reservoir, the machine will start up again.

Separate from the circuit board:

￿If the high pressure control (cut out switch) opens, the compressor will stop immediately (through the contactor ). It must be manually reset.

￿The master switch is the manual control for the complete machine, but it is not a service disconnect.

Ice Vending

￿When a user places a container in front of the Touch Free ice sensor and below the ice delivery chute, the circuit board connects power to the bin drive motor and ice is dispensed for as long as the container is present. If the user does not remove the container, ice will be dispensed for 60 seconds and then stop.

￿When a user places a container in front of the Touch Free water sensor, and below the water spout, the circuit board connects power to the water solenoid valve and water is dispensed. If the user does not remove the container water will be dispensed for 90 seconds and then stop.

Splash panel cleaning:

￿A switch, located next to the water spout, may be pushed to disable the Touch-Free sensors for splash panel cleaning. It automatically resets after 2 minutes, or, if pushed within the 2 minutes, resets the circuit board to enable the Touch Free sensors.

Splash Panel

Cleaning or

Touch Free

Disable Switch

May 2001

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Contents Introduction Table of ContentsMDT5N25 & MDT5N40 Installation Limitations Service Limitations For the Installer Environmental LimitationsMinimum Maximum Water LimitationsMachine Stand Installation For the InstallerCounter Top or Machine Stand Installation Unpack and install the ice and water spoutsFor the Installer Wall Mount Kit Conform to ALL Applicable Codes For the PlumberFor 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 Component Description Control Box On/Off Switch ManualCircuit Board Potential RelayElectrical Sequence Splash panel cleaningStart up consists Shut Down consistsOperation Water Operation Refrigeration Refrigeration SchematicContainer Operation Ice VendingDispense Area Sanitation Scotsman Ice Machine Cleaner contains acids Cleaning and SanitizingTo Sanitize Check and tighten all bolts and screws Moving Parts Hazard Maintenance and CleaningSymptom Possible Cause Probable Correction Service DiagnosisMDT5N25 & MDT5N40 Power Service Diagnosis Circuit BoardOff Timer Bin EmptyBIN Controls Ice Level Sensors Removal and ReplacementTo Remove the Breaker Bearing Assembly Removal and Replacement Bearing And BreakerTo 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 Do not USE Mineral OIL in this Refrigeration System Refrigeration Service R-404A HP62General Information Refrigeration ServiceOnly a HFC type dryer should be used Printed Circuit Board Handling Precautions Circuit Board ServiceLiquid Charging Instructions for R-404A

MDT5N40, MDT5N25 specifications

The Scotsman Ice MDT5N25 and MDT5N40 models are part of a sophisticated line of ice machines designed for commercial use. These models stand out for their efficiency, reliability, and advanced technology, making them ideal for restaurants, bars, and other food service establishments that require a constant supply of ice.

One of the main features of the Scotsman MDT5N25 and MDT5N40 models is their ability to produce high volumes of ice quickly while maintaining energy efficiency. These machines are designed to provide a steady supply of ice, ensuring that businesses can meet the demands of their customers without interruption. The MDT5N25 can produce approximately 260 pounds of ice per day, while the MDT5N40 takes it a step further by producing around 450 pounds daily. These capacities make both models suitable for various applications, from small cafes to larger dining venues.

Both models are equipped with Scotsman’s proprietary EcoX technology, which enhances energy efficiency and reduces water consumption. This technology employs advanced engineering designs that minimize waste and optimize production cycles. This focus on sustainability not only helps reduce operational costs but also appeals to environmentally conscious businesses.

The MDT5N25 and MDT5N40 also feature a self-cleaning mechanism that simplifies maintenance and ensures consistent ice quality. The automatic cleaning cycle helps prevent limescale and bacteria buildup, providing peace of mind for operators who prioritize hygiene and food safety.

In terms of design, both models boast a compact footprint, making them suitable for establishments with limited space. They come with a built-in storage bin that efficiently holds large quantities of ice, streamlining operations and making it easy for staff to access ice when needed. The sleek stainless steel finish of the machines not only enhances their durability but also ensures they can blend seamlessly into any commercial kitchen environment.

The user-friendly control panel on both the MDT5N25 and MDT5N40 allows for easy adjustments and monitoring of the machine’s performance. Operators can easily keep track of production levels and patterns, ensuring they can manage their ice supply effectively.

In conclusion, the Scotsman Ice MDT5N25 and MDT5N40 models represent a robust solution for commercial ice production, combining efficiency, advanced technology, and ease of use. With their impressive output capacities, energy-efficient designs, self-cleaning features, and durable construction, these machines are perfect for businesses that rely on consistent ice production to meet their needs.