User manual SCOTSMAN CME656R

[. . . ] CME506R, 656R, 806R: AutoIQ Cubers Introduction: This product manual contains the information needed for the setup, installation, initial start up, sanitation and maintenance of this ice machine. There are 3 models covered in this manual: Be certain that the information applies to the model in question. If no model is listed, the information applies to all models, including A and D series. 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. [. . . ] indicates to the AutoIQ Controller that it is time to begin the Harvest cycle. This is measured During the Harvest cycle, water again enters the water reservoir, and overfills it to rinse the reservoir of accumulated minerals. It does NOT overflow for a fixed amount of time, but for a time determined by the AutoIQ Controller. The water pump will be off for a short period of time at the beginning of Harvest. by a thermistor located on the compressor discharge line. Refrigeration System: 3. The float rises and falls with the water level, and switches the sensor on and off as it moves. The controller measures and compares how long it takes for various events to happen. Water Pump January 2000 Page 19 CME506R, 656R, 806R: AutoIQ Cubers Technicians Only: Freeze Cycle Operational Sequence Assuming the machine has been operational, the Freeze cycle begins with the end of the Harvest Cycle: 6. It only does this when the water temperature reaches a preset minimum. After the pump restarts, the inlet water valve will open to refill the reservoir. As the machine makes ice, the water level in the reservoir will ultimately fall to the Harvest Level. Note: If the freeze cycle exceeds the preset Maximum, the AutoIQ Controller will Shut Down on a Refrigeration Error. The end of Freeze cycle will see the machine in this state: · · · · · · · Water level overflowing Water Inlet Valve is OFF Water Pump is ON Liquid Line Valve is OPEN Pump Down Control is CLOSED Compressor is ON Hot Gas Valve is ON (plus 5 seconds after start of Freeze on D series) AutoIQ Controller Operation, Beginning freeze: Water level = below harvest position Water inlet valve will be off 1. Switches on Freeze indicator light and shuts off Water pump will be ON the hot gas valve. Measures and stores the discharge Hot gas valve will be off temperature. If the discharge temperature exceeds the design Controller switches the Harvest indicator light ON. maximum, shuts the machine down on a Note: If there is a power interruption, the machine Refrigeration Error. Checks for a "bin full" signal throughout the cycle. · · · · · 5. If the machine is operating correctly, the reservoir water temperature will fall at a standard rate. The AutoIQ Controller will be checking to see if the water temperature fall matches that rate. If the discharge temperature is acceptable, the water system is checked by shutting off the water pump and determining if the water level goes up enough. If, after restarting, the water level does not drop, it is assumed that there is a water pump problem and the machine Shuts Down on a Water Error. [. . . ] Remove the gages and replace the stem and manifold but flash off to vapor before it enters the port caps. After the scale = the correct charge, shut off the valve on the refrigerant cylinder. With the ice machine running and the discharge access valve closed, open both manifold valves to allow the refrigerant in the hoses to enter the system. Replace and tighten all caps. January 2000 Page 40 Before Calling for Service Check the following: CME506R, 656R, 806R: AutoIQ Cubers 1. [. . . ]