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Scotsman CME1202 User Manual

Scotsman cme1202 ice machine: user guide
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INTRODUCTION
To the owner or user: This service manual 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 system.
FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2
UTILITY CONNECTION LOCATIONS: Back Views . . . . . . . . . . . . . . . . . . . . . . . . page 4
FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8
INITIAL START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 10
COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 18
SYSTEM SPECIFICATIONS: CME1202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 22
SYSTEM SPECIFICATIONS: CME1402 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 23
SERVICE DIAGNOSIS: Refrigeration and/or Mechanical . . . . . . . . . . . . . . . . . . . . . page 25
REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 27
REFRIGERATION SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29
R-404A INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 30
LIQUID CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 31
Parts Lists and Wiring Diagrams are located in
the center of this manual, printed on yellow
paper.
This manual was printed on recycled paper.
Keep this manual for future reference.

Table of Contents

CME1202 & CME1402
Note this symbol when it appears in the
manual. It indicates a potential hazard.
January 1995
Page 1

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Summary of Contents for Scotsman CME1202

  • Page 1: Table Of Contents

    ......... . page 20 SYSTEM SPECIFICATIONS: CME1202 ......page 22 SYSTEM SPECIFICATIONS: CME1402 .

  • Page 2: For The Installer

    CME1202 & CME1402 FOR THE INSTALLER These machines will fit Scotsman’s ice storage bin (48" wide) BH900, and with adapters, Scotsman’s ice storage bins BH1000 (with KBT21) or BH1360. They will stack (with kits) onto the following ice machines: CME1202 or CME1402 (use KSCMS48).

  • Page 3: Airflow On Air Cooled Models

    CME1202 & CME1402 AIRFLOW ON AIR COOLED MODELS NAMEPLATE IS ON THE BACK PANEL A Serial Number Plate is Located Behind The Front Panel AIR FLOWS IN THE FRONT AND OUT THE BACK January 1995 Page 3...

  • Page 4: Utility Connection Locations: Back Views

    CME1202 & CME1402 UTILITY CONNECTION LOCATIONS: Back Views Air Cooled Water Cooled WATER INLET 3/8 IN MALE FLARE CONDENSER INLET 1.0 CM 3/8 IN. FPT 8.91 IN January 1995 Page 4...

  • Page 5: For The Installer: Location & Assembly

    1. Arrange for proper electric, water and drain. See instructions for the plumber and for the electrician. 2. Single ice machine on bin: Use legs packed with the bin. After mounting the legs position the ice storage bin in the selected location: Two ice machines on a bin require a stacking kit such as KSCMS48.
  • Page 6 CME1202 & CME1402 FOR THE INSTALLER: Location & Assembly Stacking Instructions A stacking kit, KSCMS48, is required to interconnect the ice level controls, seal the freezing compartments, and to retain the top edges of the bottom unit’s front panels. Follow the installation instructions of the stacking kit, but in general: Use heavy duty legs (kit KLP6).

  • Page 7: For The Electrician

    FOLLOW ALL APPLICALBE CODES ELECTRICAL CONNECTIONS, WATER COOLED CME1202 & CME1402 Electrical connections are made at the rear of the ice maker, inside the junction box. All external wiring should conform to the national, state and local electrical code requirements.

  • Page 8: For The Plumber

    CME1202 & CME1402 FOR THE PLUMBER FOLLOW ALL LOCAL CODES: The recommended water supply line is a 3/8-inch O.D. copper tubing with a minimum operating pressure of 20 PSIG and a maximum of 80 PSIG. Connect to cold water supply line with standard...

  • Page 9: Final Check List

    11. Has the Manufacturers Registration form been properly filled out? Check for correct model and serial numbers from Serial nameplate, then mail the completed card to the SCOTSMAN factory. 12. Has the owner/user been given the Service Manual and instructed how to operate and maintain the ice maker? 13.

  • Page 10: Initial Start Up

    After the first cycle freezing time will range ON/OFF/WASH SWITCH between 13 - 18 minutes on CME1202 and 11 - 15 minutes for the CME1402. ICE LEVEL CONTROL...
  • Page 11 Observe size of the ice in the next ice cube harvest and repeat the adjustment until the correct ice cube size is achieved. CME1202 & CME1402 CUBE SIZE DIAGRAM JUST RIGHT When the cubes are the correct size, they will be connected together vertically, and drop off in strips.
  • Page 12 Customer Evaluation form and send it in. Explain to the owner/user the significant specifications, operation, and maintenance requirements of the ice machine. Inform the owner of the name and telephone number of the local authorized SCOTSMAN Distributor, or service agency. January 1995 Page 12...

  • Page 13: Freezing Cycle Operation

    CME1202 & CME1402 FREEZING CYCLE OPERATION Water from the sump assembly is pumped to the water distributor system at the top of each evaporator plate. From the water distributor the water cascades by gravity over all cells of the plate WATER DISTRIBUTION and to the sump assembly below.

  • Page 14: Harvest Cycle - Hot Gas Bypass

    CME1202 & CME1402 HARVEST CYCLE - HOT GAS BYPASS When the timer switches the ice maker into the harvest cycle, the finish relay is de-energized, and WATER the hot gas valve and inlet water valve OPEN. DISTRIBUTION Then high pressure, high temperature gas...

  • Page 15: Component Description

    450 PSIG (air cooled) or 400 PSIG (water cooled). Found below the control box. RELAY TIMER AND MICROSWITCH ICE/OFF/WASH SWITCH March 1995 Page 15 CME1202 & CME1402 CUBE SIZE CONTROL CONTROL SWITCH DETAIL Hi Pressure Safety, Push To Reset...
  • Page 16 Bin Level Control This electronic control uses sound waves to measure the distance between the bottom of the ice machine and the top of the ice in the bin. It is designed to control the machine’s ice production to maintain that distance.
  • Page 17 CME1202 & CME1402 COMPONENT DESCRIPTION Water Inlet Solenoid Valve The water inlet solenoid valve fills the sump assembly with water. Extra water overflows out the overflow standpipe of the sump. This action fills and rinses the sump during each harvest cycle.

  • Page 18: Cleaning

    CME1202 & CME1402 CLEANING 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. Maintenance and Cleaning should be scheduled at a minimum of twice per year.
  • Page 19 CLEAN Remove any scale prior to sanitizing. To Remove Scale: 1. Mix a cleaning solution of 4 ounces of Scotsman Ice Machine Cleaner to 4 pints of hot (95 F.) water. 2. Using rubber gloves, dip a nylon scouring pad into the cleaning solution, and scrub the scale off of the liner.

  • Page 20: Adjustments

    CME1202 & CME1402 ADJUSTMENTS Adjustment Of The Cube Size Control CAUTION BEFORE adjusting the cube size control, check other possible causes for cube size problems, refer to Service Diagnosis section. DO NOT perform adjustment when a new cube size control...
  • Page 21 CME1202 & CME1402 To Adjust The Timer & Switch Assembly: The length of the harvest cycle can be changed by loosening the set screw on the cam, and then rotating the shaft so that the opening between the cams change.

  • Page 22: System Specifications: Cme1202

    240 PSIG cut in, 190 PSIG cut out Ice Level Control Maximum Range = 8 feet Partial Fill Setting:= 21" - 22" from the base of the ice machine Timer 1 revolution takes 10 minutes (was 8 minutes prior to June, 1996)

  • Page 23: System Specifications: Cme1402

    240 PSIG cut in, 190 PSIG cut out Ice Level Control Maximum Range = 8 feet Partial Fill Setting:= 21" - 22" from the base of the ice machine Timer 1 revolution takes 10 minutes (was 8 up to June 1996)

  • Page 24: Service Diagnosis: Electrical And/Or Adjustments

    CME1202 & CME1402 SERVICE DIAGNOSIS: Electrical and/or Adjustments SYMPTOM Nothing operates Makes thick ice/freezes up Runs, makes no ice Long freeze cycle Cubes too small Cubes too large POSSIBLE CAUSE Bin level control holding machine No Power High pressure control open High temperature cut out open P.

  • Page 25: Service Diagnosis: Refrigeration And/Or Mechanical

    Low capacity Unit runs out of water Unit shuts off before bin is full Unit does not shut off CME1202 & CME1402 POSSIBLE CAUSE Too short harvest time Restriction of incoming water Hot gas valve does not open Not enough refrigerant...

  • Page 26: Service Diagnosis: Ice Level Control Circuit

    CME1202 & CME1402 SERVICE DIAGNOSIS: Ice Level Control Circuit CONDITION Ice Machine does not run, it has power to it, the high pressure control is closed, the on/off switch is set to ON. Machine runs, makes ice, switches on and off, but ice level cannot be controlled.

  • Page 27: Removal And Replacement

    DISTRIBUTOR TUBE CME1202 & CME1402 Cube Size Control To remove the cube size control: 1. Remove front panel.
  • Page 28 CME1202 & CME1402 REMOVAL AND REPLACEMENT Electrical Shock Hazard. Electrical shock can cause personal injury. Disconnect power before beginning to service components Water Pump 1. Remove front panel. 2. Unplug water pump electrical connection. 3. Drain water reservoir. 4. Use corbin clamp pliers to loosen and slide corbin clamps on hoses away from pump.

  • Page 29: Refrigeration Service

    There are various mechanical devices that may be used to recycle refrigerant at the field level, however, Scotsman requires that any refrigerant placed into a Scotsman ice machine meet the latest ARI spec 700. Reclaim programs are available thru most refrigerant wholesalers.

  • Page 30: R-404A Information

    CME1202 & CME1402 R-404A INFORMATION This ice machine uses R-404A refrigerant and polyolester oil. Do NOT use mineral oil in this refrigeration system. R-404A is a "Near Azeotrope" so liquid charging is required: See the next page. When the system is serviced, a special liquid line drier is required. It is included with replacement compressors.

  • Page 31: Liquid Charging

    10. Re-open the manifold valves until all liquid has flowed out of the hoses. 11. Shut the low side access valve on the ice machine. 12. Remove hoses from ice machine and replace all caps. CME1202 & CME1402 Hose Connection Schematic for Liquid Charging January 1995 Page 31...

This manual is also suitable for:

Cme1402

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