User manual SCOTSMAN MDT2C12

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Manual abstract: user guide SCOTSMAN MDT2C12

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[. . . ] MDT2 INTRODUCTION This manual provides the specifications and the step-by-step procedures for the installation, start-up, operation, maintenance and cleaning for the SCOTSMAN MDT2 counter top cubelet ice dispenser. NOTE: To retain the safety and performance built into this ice machine, it is important that installation and maintenance be conducted in the manner outlined in this manual. Table of Contents SPECIFICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 2 CABINET DIAGRAMS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 3 · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 4 GENERAL INFORMATION AND INSTALLATION ELECTRICAL CONNECTIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 5 WATER SUPPLY AND DRAIN CONNECTIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 6 FINAL CHECK LIST · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 7 OPERATING INSTRUCTIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 8 INITIAL START UP CONTINUED · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 9 SETTING THE DISPENSING SELECTOR · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 11 PRINCIPLE OF OPERATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 12 REFRIGERANT CIRCUIT · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 13 MECHANICAL SYSTEM · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 14 COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 15 COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 16 COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 17 COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 18 SERVICE DIAGNOSIS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 19 SERVICE DIAGNOSIS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 20 MAINTENANCE AND CLEANING INSTRUCTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 21 CLEANING INSTRUCTIONS OF WATER SYSTEM · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 22 REMOVAL AND REPLACEMENT · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 23 TOP BEARING REPLACEMENT · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 24 BEARING REPLACEMENT - CONTINUED · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 25 WATER SEAL · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 26 May 2002 Page 1 MDT2 SPECIFICATIONS MDT2C12: Ice Maker Dispenser TouchFree 200 lb ice making capacity Cublet 12 lb storage Important operating requirements: MIN - Air temperature - Water temperature - Water pressure - Electrical voltage variations from voltage rating specified on nameplate 50°F 40°F 20 psi -10% MAX 100°F 95°F 70 psi +10% To keep your SCOTSMAN CUBELET DISPENSER at peak performance levels, periodic maintenance checks must be carried out as indicated in this manual. MACHINE SPECIFICATIONS Model MDT2C12-1A Basic electrical 115/60/1 Cond. unit Air Amps 6 Cabinet Size 34 13/32" high x 15 9/32" wide x 26 7/64" deep Watts 550 Amps fuse 15 Finish S. HP 3/8 Ice bin cap 12 lb. Unit is equipped with leveling legs. [. . . ] The fan motor will cycle on an off to maintain the discharge pressure. GEAR MOTOR ROTATION AND SPEED SENSOR - RED FOUR POLE CONNECTOR MANUAL RESET This safety device is housed on top of the Drive Motor and detects - based on the Hall Effect principle - the rotating speed and rotating direction of the drive Motor. Should the rotating speed drop below 1300 rpm the magnitude measured by this device signals the microprocessor to stop the unit and turns on the 3rd YELLOW LED. The same reaction occurs when the drive motor rotates in the wrong direction (counterclockwise) or it doesn't rotate at all. NOTE: After diagnosing and eliminating the problem that caused the intervention of the safety device, press the RESET button or turn the power line main disconnect switch OFF and ON to restart the unit after the shut down. May 2002 Page 15 MDT2 COMPONENT DESCRIPTION E. ICE BIN LEVEL LIGHT CONTROL ­ BLACK FOUR POLE CONNECTOR ­AUTOMATIC RESET The electronic ice bin level control (located on the ice spout) stops the operation of the ice machine when the light beam between the light source and the sensor gets interrupted by the ice which accumulates in the spout. When the light beam is interrupted for 6 seconds, the 1st RED LED (on the front of the PC board) goes off and the ice machine stops ice production and turns on the 6th YELLOW LED to show that there is a full storage bin. The 6-second delay prevents interruption of machine operation in the case of minimal breaks in the light beam that can occur due to the ice dropping through the ice spout blocking the sensor. As soon as ice is scooped out of the bin, the light beam resumes contact with the two infrared sensors of ice level control. The RED LED lights up and after 6 seconds the ice machine resume its operation and the 6th YELLOW LED turns off. ICE/WATER OPTICAL DISPENSING DEVICE BLUE FOUR-POLE CONNECTOR Located on the front of the dispensing area it consists of a combination of an infrared Transmitter and Receiver. When a glass or a carafe is placed in front of the Infrared sources, the optical device transmits a signal to the PC Board. This activates the dispensing drive motor, which in turn, puts into rotation a dispensing vane that pushes the ice towards a rectangular opening located in the bottom of the storage bin. After the glass/carafe is removed or the dispensing time has elapsed (5, 10 or 15 seconds according to the setting) the infrared transmitter switches off the dispensing drive motor. Fig 6 Reset button Bin empty Hi cond temp when Steady 3 minute wait when Blinking Auger Motor when Steady Hi evap temp when Blinking Bin full No water Power May 2002 Page 16 MDT2 COMPONENT DESCRIPTION G. FRONT DISPENSING SELECTOR/DISPLAY BLACK SIX-POLE CONNECTOR Placed in the upper front part of the dispensing area it is used to select (varies by machine model): a) Ice (first switch) or a) Ice (first switch) b) Ice and water (second switch) c) Water - not chilled - (third switch) It is also possible to set up for "continuous" dispensing operation just by pushing the fourth switch before or after the selection of the dispensed product. Once completed the dispensing selector/display resumes its original dispensing setting mode. NOTE: It is possible to modify the original resume mode (default) by pushing the corresponding switch for 5 seconds (all machines are factory set to the ICE dispensing mode). It is also possible to modify the dispensing time controlled by the PC Board to 5, 10 or 15 seconds by: a) Push and hold the 4th switch "continuous" for approximately 10 seconds till the first 3 lights start to blink b) Pushing the 1st switch (ICE) is equivalent to 5 seconds. Pushing the 2nd switch (ICE+WATER) is equivalent to 10 seconds. Pushing the 3rd switch (WATER) is equivalent to 15 seconds. PC BOARD (Data processor) The PC BOARD (in a plastic box on the right side of the unit) consists of two separated printed circuit boards; one at high voltage and the other at low voltage, protected by three fuses, integrated with a RESET button. It also consists of six aligned LEDS monitoring machine operation, input terminals for the leads of the sensor probes as well as input and output terminals for the leads of the ice machine electrical wires. [. . . ] Carefully clean out the breaker, removing any debris or dirt. Separate the flat-bearing & thrust washer from the new roller bearing. Flat bearing Thrust Washer Not Shown Roller Bearing Flat Washer 5/16" bolt ¾" copper coupling Large Flat Washer Nut for centering Nut for tightening Roller Bearing Flat washer Construction of Bearing Insertion Tool ·Place copper coupling onto top of bearing ·Place large washers over coupling and small washer under bottom of bearing. ·Insert bolt through large washers, coupling and bearing. Run one nut into bearing to center the bolt. [. . . ]

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