Scotsman Ice MDT5N25, MDT5N40 Circuit Board Service, Liquid Charging, Instructions for R-404A

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May 2001
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MDT5N25 & MDT5N40

CIRCUIT BOARD SERVICE

Printed Circuit Board Handling Precautions

 

Follow these simple precautions when replacing a

 

Printed Circuit Board

 

1.

Keep the replacement PC Board in the

 

anit-static packaging until it is ready to be installed.

 

2.

Be sure that your hands are clean.

 

3.

Just before touching the board, touch the

 

cabinet of the machine to discharge any possible

 

build up of static electricity.

 

4.

Handle the original and replacement boards only

 

by their outer edges.

 

5.

Place the original board in the anti-static

 

package for return (if in warranty).

 

LIQUID CHARGING

 

Instructions for R-404A

9. Shut off the valve on the refrigerant drum.

In preparation for charging, the low side hose

10. Re-open the manifold valves until all liquid has

should have a sight glass, and/or a restrictor

flowed out of the hoses.

device (such as a “Charge Faster”) installed in it for

11. Shut the low side access valve on the ice

metering liquid into the low side of the system.

machine.

1.

After a thorough evacuation to at least 300

12. Remove hoses from ice machine and replace

microns, shut off the manifold valves and switch off

all caps.

the vacuum pump.

 

2.

Place a drum of R-404A onto an electronic

 

scale.

 

3.

Attach the charging hose to the drum.

 

4.

Open the valve on the drum and purge the

 

charging hose.

 

5.

Zero out the scale.

 

6.

Shut the low side access valve at the ice

 

machine.

 

7.

Open the discharge manifold valve full open.

 

8.

Watch the scale, when the correct charge is

 

shown, shut the manifold valve.

 

Note: If all of the charge will not “go in” the discharge side:

A. Shut the discharge access valve at the ice machine.

B. Switch the machine on.

C. Open the low side access valve at the ice machine.

D. Open the low side manifold valve and observe the sight glass to be certain that only gas is flowing into the system.

E. When the proper charge is indicated on the scale, shut off the manifold valve(s).

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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 Start Up Initial Start UPPre Start Inspection 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 To Sanitize Cleaning and SanitizingScotsman Ice Machine Cleaner contains acids 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 To Replace the Water Seal Removal and Replacement Water SealTo Remove the Water Seal To Reassemble the Evaporator and Auger For Access to the Evaporator to Gearmotor boltsTo Replace the Evaporator To Inspect the gearmotor To Remove and Repair the Gearmotor AssemblyElectrical Shock Hazard Refrigeration Service R-404A HP62 Do not USE Mineral OIL in this Refrigeration SystemOnly a HFC type dryer should be used Refrigeration ServiceGeneral Information Circuit Board Service Printed Circuit Board Handling PrecautionsLiquid 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.