User manual SCOTSMAN CME1056R

[. . . ] CME1056R 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 Be certain that the information applies to the model the sanitation section, followed by service in question. TABLE OF CONTENTS Specifications , , , , , , , , , , , , , PAGE 2 Condenser and Ice Machine Layouts , PAGE 3 Pre-Installation , , , , , , , , , , , , , PAGE 4 Location & Assembly , , , , , , , , , PAGE 5 Stacking , , , , , , , , , , , , , , , , PAGE 6 Stacking , , , , , , , , , , , , , , , , PAGE 7 Bin Control: Installation , , , , , , , , PAGE 8 For The Installer: Remote Condenser , PAGE 9 Remote Condenser Location , , , , , PAGE 10 Coupling Instructions , , , , , , , , , PAGE 11 Head Pressure Control Add-On Kit , , PAGE 12 Electrical , , , , , , , , , , , , , , , , PAGE 13 Plumbing , , , , , , , , , , , , , , , , PAGE 14 After Utility Connections , , , , , , , , PAGE 15 Component Location and Function , , PAGE 16 AutoIQ Controller , , , , , , , , , , , PAGE 17 Initial Start Up , , , , , , , , , , , , , PAGE 18 Adjustments , , , , , , , , , , , , , , PAGE 19 How To Operate The AutoIQ Controller PAGE 20 How The Electronic Cuber Works , , , PAGE 21 How The Electronic Cuber Works , , , PAGE 22 Technicians Only: Freeze Cycle Sequence , , , , , , , , , , , , , , , , , , , , , PAGE 23 Technicians Only: Harvest Cycle Sequence & Other Notes , , , , , , , , , , , , , , PAGE 24 Sanitation and Cleaning , , , , , , , , PAGE 25 Additional Maintenance , , , , , , , , PAGE 26 Additional Maintenance: Inlet Water Valve Screen , , , , , , , , , , , , , , , , , , , , , PAGE 27 Additional Maintenance: Ice Sensors, Condenser , , , , , , , , , , , , , , , , , , , , , PAGE 28 Service Diagnosis: Diagnostic Light Analysis , , , , , , , , , , , , , , , , , , , , , PAGE 29 Service Diagnosis , , , , , , , , , , , PAGE 30 Service Diagnosis: Components , , , , PAGE 31 Service Diagnosis , , , , , , , , , , , PAGE 32 PTCR Diagnosis , , , , , , , , , , , , PAGE 33 Operational Characteristics: CME1056R , , , , , , , , , , , , , , , , , , , , , PAGE 34 Removal and Replacement , , , , , , PAGE 35 Removal and Replacement , , , , , , PAGE 36 Removal and Replacement: AutoIQ Controller , , , , , , , , , , , , , , , , , , , , , PAGE 37 Removal and Replacement: Water Level Sensor , , , , , , , , , , , , , , , , , , , , , PAGE 38 Removal and Replacement , , , , , , PAGE 39 Refrigerant , , , , , , , , , , , , , , , PAGE 40 Before Calling for Service , , , , , , , PAGE 41 Parts Lists and Wiring Diagrams are in the section at the center of this manual. May 2000 Page 1 CME1056R Specifications Both of these ice machines are designed to be installed indoors, in a controlled environment. [. . . ] Harvest Button: Pushing and releasing this button will cause the machine to go directly to a Harvest Cycle. Clean Button: Pushing and releasing this button will cause the machine to empty the reservoir, refill and leave only the water pump on for circulation of ice machine cleaner. After the ice machine cleaner has circulated for about 10 minutes a second push of this button will switch on the rinsing system to flush out the dissolved scale and ice machine cleaner. Off Button: Pushing and releasing this button will switch the machine OFF at the end of the next cycle. If the button is pushed and HELD for more than 3 seconds, the unit will switch off immediately. March 2003 Page 20 CME1056R How The Electronic Cuber Works This section is intended for the technician. It is not necessary for the normal operation and maintenance of the machine. 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. At the same time, a Harvest Bypass Valve opens for a few seconds to add the refrigerant needed for harvest. After that the Harvest Bypass Valve and the closed Discharge Check Valve keeps the refrigerant in the condenser out of the Hot Gas Circuit. This warms up the evaporators and the surface of the ice frozen to the evaporator surface melts. The Check Valves also prevent liquid migration during the Off cycle. Thermo Exp. Valve Distributor Remote Condenser Head Pressure Control Valve Check Valve Discharge Line Receiver Check Valve Suction Evaporator Heat Exchange Harvest Bypass Valve Process Port Evaporator Accumulator Hot Gas Valve Compressor Evaporator Refrigeration Schematic May 2000 Page 21 CME1056R How The Electronic Cuber Works Water System: Freeze: The water pump forces water to the top of the evaporators. The un-frozen water falls thru the cube deflectors and back into the reservoir. As water is turned into ice, the water level in the reservoir falls, and the machine will re-fill the reservoir once during the freeze cycle. The AutoIQ Controller operates the ice machine by monitoring several input measures and switching various loads on and off. This is measured by a thermistor located in the water pump outlet. 2. This is measured At the point where the cubes are fully formed, the by a thermistor located on the compressor water level sensor indicates to the AutoIQ discharge line. The float rises and falls with the At the beginning of Harvest, the water pump shuts water level, and switches the sensor on and off as it moves. If ice fills the start at a variable time depending upon the amount bin, it will block the "eyes". Some units are equipped with a bin thermostat, After the purge valve has closed, the inlet water those units use the thermostat to switch the valve opens and water flows into the ice machine. [. . . ] While holding the bracket so that the right end is be removed to access the compressor. higher than the left, insert the right end in the vertical channel in the right side of the freezing compartment. Then, while the helper lifts the right-most evaporator slightly, push the bracket in from below. The freezing compartment walls may be pushed apart slightly to make this easier. [. . . ]