Instruction/ maintenance manual of the product MDT5N25 Scotsman Ice
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INTRODUCTION T o the owner or user: The service manual you are reading is intended to provide you, and the maintenance or service technician with the information needed to install, start up, clean, maintain, and service this ice maker-dispenser .
FOR THE INSTALLER: Specifications This ice maker-dispenser is designed to be mounted on a machine stand, or a countertop, or using wall mounting kit KWB3, hung from a wall. The sink may be retained, or removed and the optional longer splash panel (KSP5) installed in place of the original.
FOR THE INSTALLER: Environmental Limitations Installation Limitations This ice system is designed to be installed indoors, in a controlled environment.
FOR THE INSTALLER Location After uncrating and inspection, the unit is ready for installation. It is important that the machine be installed in a location where it has enough space above and behind it for service. Air cooled models require a minimum of 6 inches to the left and right of the machine for air circulation.
FOR THE INSTALLER: Wall Mount Kit CAUTION It is recommended that the wall mounting installation be done by an experienced contractor . The weight of the machine when in use may exceed 350 pounds.
FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES W ater Inlet Air Cooled Models: The recommended water supply is clean, cold water . Use 3/8" O.D. copper tubing, connect to the 3/8" male flare at the back of the cabinet. Install a hand valve near the machine to control the water supply .
FOR THE ELECTRICIAN CONFORM TO ALL APPLICABLE CODES The electrical power to the unit is supplied through the junction box at the rear of the machine. Check the nameplate (located on the back panel) for the voltage requirements, and for the minimum circuit ampacity .
FOR THE INSTALLER: Final Check List 1. Is the icemaker-dispenser installed indoors, in a location where the air and water temperatures are controlled, and where they do not go beyond design limitations? 2.
INITIAL START UP Pre Start Inspection 1. Remove the two front panels. 2. Check that all shipping blocks have been removed. 3. Remove any and all packing tape (check inside the storage bin). 4. Inspect the interior of the machine for loose screws or wires.
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.
COMPONENT DESCRIPTION Evaporator : A refrigerated vertical tube filled with water and containing a water seal and auger . Auger: A solid stainless steel double spiral auger , it pushes the ice crystals up to the top of the evaporator .
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.
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).
OPERATION: Water W ater enters the machine through the 3/8" male flare at the rear of the cabinet, goes to a strainer and then to the water reservoir which it enters through the float valve. The water then goes out the bottom of the reservoir tank to the bottom of the evaporator .
OPERATION: Refrigeration Beginning at the compressor , the refrigerant is compressed into a high temperature gas. The discharge line directs this gas to the condenser . At the condenser (air or water cooled) the gas is cooled by either air or water and it then condenses into a liquid.
OPERATION: Ice Vending Dispensing takes place when the T ouch Free sensor ’ s infrared beam bounces back to the sensor from a container placed directly in front of it.
MDT5N25 & MDT5N40 May 2001 Page 17 DISPENSE AREA SANITATION The dispense area; spouts, sink, grill and splash panel will need periodic cleaning and maintenance. 1. The ice chute may be pulled down to remove it from the ice dispenser . W ash and sanitize it.
CLEANING and SANITIZING A Scotsman Ice System represents a sizable investment of time and money in any company’s business. In order to receive the best return for that investment, it MUST receive periodic maintenance. It is the USER’S RESPONSIBILITY to see that the unit is properly maintained.
MAINTENANCE AND CLEANING 1. Air Cooled Models: Check the air cooled condenser for lint, dirt or grease build-up. Clean with vacuum or soft brush until light can be seen thru the fins. 2. The ice machine senses water level by a probe located in the water reservoir .
MAINTENANCE AND CLEANING In some areas, the water supply to the ice maker will contain a high concentration of minerals, and that will result in an evaporator and auger becoming coated with these minerals, requiring a more frequent removal than twice per year .
MDT5N25 & MDT5N40 May 2001 Page 21 SERVICE DIAGNOSIS Symptom Possible Cause Probable Correction No ice made, nothing operates Unit off due to no power Restore power Unit off due to master switch in OFF position Switch master switch to ON Unit off due to low water level Check water supply, filter, strainer, float valve.
MDT5N25 & MDT5N40 May 2001 Page 22 Symptom Possible Cause Probable Correction No water is vended Check ice vending system, if no ice will dispense, check the splash panel cleaning switch Allow 2 m.
MDT5N25 & MDT5N40 May 2001 Page 23 Explanation of Indicator Light Position On Board Name and Meaning of Light or Reset On at all times when the master switch is ON and machine is connected to electrical power. 1 Power , ON = Normal On when ice level is low (unit making ice).
REMOVAL AND REPLACEMENT W A TER RESERVOIR 1. Shut off the water supply to the icemaker . 2. Remove front panel and reservoir cover . 3. Disconnect inlet water line from valve. 4. T o remove just the float, push the locking tab at the back of the valve mounting block in and lift the valve and block up and out of the reservoir tank.
REMOVAL AND REPLACEMENT: Bearing And Breaker Note: Removal of the auger , water seal, evaporator and gearmotor must begin at the top of the assembly . T o Remove the Breaker Bearing Assembly: 1. Remove panels and disconnect electrical power . 2. Move bail clamp back and remove ice chute cover .
REMOVAL AND REPLACEMENT T o Remove the Auger: T urn off the water to the machine, and unclip the evaporator drain hose, pull it down and drain the evaporator into the bin or a container . 1. The top panel must be removed. 2. Remove ice chute cover . 3.
REMOVAL AND REPLACEMENT: Water Seal T o Remove the W ater Seal: (Assuming all steps to remove the auger have been performed.) 1. The gearmotor/evaporator assembly will have to be exposed. (See illustration - next page) 2. Remove the 4 hex head cap screws holding the evaporator to the gearmotor assembly .
REMOVAL AND REPLACEMENT T o Replace the Evaporator: (Assuming all the steps for removal of the thrust bearing, breaker , auger , and water seal have been performed.) 1. Discharge the refrigerant from the ice maker . 2. Unsweat the refrigerant connections: a) At the thermostatic expansion valve outlet.
TO REMOVE AND REPAIR THE GEARMOTOR ASSEMBLY (Assuming that the procedures through removal of the water seal have been performed.) 1. Remove the electrical wires from the gear drive motor . 2. Unscrew the 4 cap screws holding the gearmotor to the gearmotor plate.
REFRIGERATION SERVICE: R-404A (HP62) THIS ICE MACHINE USES HP62 REFRIGERANT AND POL YOLESTER COMPRESSOR OIL. DO NOT USE MINERAL OIL IN THIS REFRIGERA TION SYSTEM. · R-404A is a “Near Azeotrope”, and therefore liquid charging is required. Weigh into the discharge side as much as possible of the charge as liquid refrigerant.
MDT5N25 & MDT5N40 May 2001 Page 31 REFRIGERATION SERVICE General Information: Work on the refrigeration system should only be done when it is certain that the system needs repair .
MDT5N25 & MDT5N40 May 2001 Page 32 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.
An important point after buying a device Scotsman Ice MDT5N25 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Scotsman Ice MDT5N25 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Scotsman Ice MDT5N25 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Scotsman Ice MDT5N25 you will learn all the available features of the product, as well as information on its operation. The information that you get Scotsman Ice MDT5N25 will certainly help you make a decision on the purchase.
If you already are a holder of Scotsman Ice MDT5N25, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Scotsman Ice MDT5N25.
However, one of the most important roles played by the user manual is to help in solving problems with Scotsman Ice MDT5N25. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Scotsman Ice MDT5N25 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
