User manual SCOTSMAN CME1056

[. . . ] CME1056 INTRODUCTION This product manual contains the information needed for the setup, installation, initial start up, sanitation and maintenance of this ice machine. This manual is organized in the same way as the expected use of the machine, it begins with specifications, goes thru unpacking and setup, shows where everything is; continues with initial start up, then describes how it works. After that is the sanitation section, followed by service diagnosis and repair. CM CubedTM Cuber Performance Raised to a Higher Power. TM TM TABLE OF CONTENTS Specifications , , , , , , , , , , , , , PAGE 2 Air Cooled Layout , , , , , , , , , , , PAGE 3 Water Cooled Layout , , , , , , , , , PAGE 4 Pre-Installation , , , , , , , , , , , , , PAGE 5 Location & Assembly , , , , , , , , , PAGE 6 Cabinet Panel Removal: , , , , , , , , PAGE 7 Stacking: Requires Kit , , , , , , , , , PAGE 8 Stacking , , , , , , , , , , , , , , , , PAGE 9 Bin Thermostat: Installation , , , , , , PAGE 10 Plumbing - Air Cooled , , , , , , , , , PAGE 11 Plumbing - Water Cooled , , , , , , , PAGE 12 Electrical , , , , , , , , , , , , , , , , PAGE 13 After Utility Connections , , , , , , , , PAGE 14 Component Description and Function , PAGE 15 AutoIQ Controller , , , , , , , , , , , PAGE 16 How To Operate The Controller , , , , PAGE 17 Initial Start Up , , , , , , , , , , , , , PAGE 18 Adjustments , , , , , , , , , , , , , , PAGE 19 How This Machine Works , , , , , , , PAGE 20 How This Machine Works , , , , , , , PAGE 21 Technicians Only: Freeze Cycle Operational Sequence , , , , , , , , , , , , , , , PAGE 22 Parts Lists and Wiring Diagrams are Located in the Center of this Manual Technicians Only: Harvest Cycle Operational Sequence , , , , , , , , , , , , , , , PAGE 23 Sanitation and Cleaning , , , , , , , , PAGE 24 Additional Maintenance , , , , , , , , PAGE 25 Additional Maintenance: Ice Sensors and Water Level Sensor , , , , , , , , , , , , , , PAGE 26 Additional Maintenance: Air Filter Replacement , , , , , , , , , , , , , , , , , , , , , PAGE 27 Additional Maintenance: Condenser , , PAGE 28 Service Diagnosis: Controller Diagnostic Light Analysis , , , , , , , , , , , , , , , , PAGE 29 Service Diagnosis , , , , , , , , , , , PAGE 30 Service Diagnosis: Components , , , , PAGE 31 PTCR Diagnosis , , , , , , , , , , , , PAGE 32 Operational Characteristics: CME1056 PAGE 33 Removal and Replacement: Water Level Sensor , , , , , , , , , , , , , , , , , , , , , PAGE 34 Removal and Replacement: Fan Blade and/or Fan Motor , , , , , , , , , , , , , , , , , , PAGE 35 Access Valves , , , , , , , , , , , , , PAGE 36 Before Calling for Service , , , , , , , PAGE 37 May 2000 Page 1 CME1056 Specifications This ice machine is designed to be installed indoors, in a controlled environment. [. . . ] The higher the purge setting, the sooner the water Water System: pump will start, and more water will be drained out. Water flows into the ice machine during the harvest cycle thru the inlet water valve. The water valve will NOT be open the complete length of the harvest cycle. The water pump forces water to the top of the evaporators, both in the Freeze and Harvest cycles. Un-frozen water falls thru the cube deflector and back into the reservoir. As water is turned into ice, the water level in the reservoir falls, and at the point where the cubes are fully formed, the Water Level Sensor indicates to the AutoIQ Controller that it is time to begin the Harvest cycle. It is not necessary for the normal operation and maintenance of the machine. Water Distribution System Water Inlet Valve Purge Valve Water Pump Water Reservoir May 2000 Page 20 CME1056 How This Machine Works Refrigeration System The refrigeration system is similar to that of most commercial cube ice machines. Heat is removed from the water and discharged out the condenser during the freeze cycle. As liquid refrigerant passes thru the Thermostatic Expansion Valve, it enters the top of the evaporators, and ice will form at the top first. When cubes need to be released (Harvest) the Hot Gas Valve is opened and Hot discharge gas flows directly from the compressor to the evaporator inlets. This warms up the evaporators and the surface of the ice frozen to the evaporator surface melts. Ice then falls into the bin. Condenser Refrigerant Distributor Evaporators Hot Gas Valve Thermo Expansion Valve May 2000 Page 21 CME1056 Technicians Only: Freeze Cycle Operational Sequence Assuming the machine has been operational, the Freeze cycle begins with the end of the Harvest Cycle: restarts, the inlet water valve opens to refill the reservoir. As the machine makes ice, the water level in the reservoir will ultimately fall to the Harvest Level . The first time that happens during a freeze cycle prompts the controller to re-fill the reservoir. The next time it happens, the unit will begin to go into a harvest cycle. Air cooled models will switch off the fan motor a few seconds before harvest begins. · · · · · Condenser fan is OFF Water Inlet Valve is CLOSED Water Pump may be ON Compressor is ON Hot Gas Valve is OPEN Controller Operation, Beginning freeze: 1. Switches on the Freeze indicator light and shuts Note: If the freeze cycle exceeds the preset Maximum (30 minutes), the Controller will Shut off the hot gas valve. It will · Water level = below harvest position automatically try to restart in 20 minutes. The · Water pump will be ON Controller checks the discharge temperature and · Compressor will be ON cycles the fan every on for 10 seconds and off for · Hot gas valve will be off 20 seconds if the temperature is low. If the discharge temperature exceeds the design maximum, shuts the machine down on a Refrigeration Error. Checks for a "bin full" signal throughout the cycle. At this point Harvest begins and the System Controller switches the Harvest indicator light ON. [. . . ] Unwrap the insulation and un-snap the clip holding the sensor to the discharge line. Trace the sensor wires back to the controller, they are plugged into #5 with the water temperature sensor, and must be replaced with it. Reverse to replace, be sure that the discharge line sensor is 6" up from the compressor discharge port. The sensor for the Discharge line is marked with a small piece of yellow tape. [. . . ]