User manual SCOTSMAN CME1356R

[. . . ] CME1356R and CME1656R Introduction This product manual contains the information needed for the setup, installation, initial start up, sanitation and maintenance of this ice machine. There are 2 models covered in this manual: Be certain that the information applies to the model in question. 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. · CME1356R, (5 evaporators) · CME1656R, (6 evaporators) TABLE OF CONTENTS Specifications . [. . . ] 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. The electric eyes in the cube The water valve will NOT be open the complete outlet port will also control the machine if the bin length of the harvest cycle. The controller measures and compares the beginning of the next freeze cycle. Purge Valve May 2001 Page 23 CME1356R and CME1656R Technicians Only: Freeze Cycle Sequence Assuming the machine has been operational, the Freeze cycle begins with the end of the Harvest Cycle: 8. As the machine makes ice, the water level in the reservoir will ultimately fall to the Harvest Level. The first time that happens per freeze cycle the inlet water valve is re-opened and the reservoir is ·Water Inlet Valve is Closed refilled. The next time it happens, the unit will go ·Water Pump is ON into a harvest cycle. ·Compressor is ON Note: If the freeze cycle exceeds the preset Maximum (36 minutes), the Controller will Shut ·Hot Gas Valve is Open AutoIQ Controller Operation, Beginning freeze: Down the machine and switch on the Refrigeration Light. ·Water level = below harvest position The controller checks that water fills the reservoir, ·Water inlet valve will be off if it does not fill up within 250 seconds, the controller shuts the machine down. It will ·Water pump will be ON automatically try to restart in 20 minutes. 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. If the machine is restarting after it has shut off because the bin was full, the first freeze cycle sequence is like this: 6. the discharge temperature is acceptable, the water Note: If there is a power interruption, after power is system is checked by shutting off the water pump restored the machine will restart, go thru a brief and determining if the water level goes up enough. Error Restarts: If it does not, the inlet water valve will open again to fill it. If, after restarting, the water level does not The machine automatically attempts to restart 50 drop, it is assumed that there is a water pump minutes after a shut down. If another problem problem and the machine Shuts Down on a Water occurs in the next cycle, the machine will attempt Error. If another problem occurs in the next cycle, the machine will shut off and must be If the water level does "measure up" the water manually reset. pump is restarted and the AutoIQ Controller then measures how long it takes to lower the water level. [. . . ] An electronic leak detector capable of locating HFC-134a type refrigerant must be used to locate refrigerant leaks. Recovering the Refrigerant Because of the check valves, liquid refrigerant must be recovered thru the liquid line valve, as well as the low side access valve at the front of the machine. Use a refrigeration wrench and check that the valve stem is fully UP or OUT. Note: Open liquid line valve half way to access both sides of the liquid line. [. . . ]