User manual SCOTSMAN CME456

[. . . ] CME306 & CME456 INTRODUCTION This product manual contains the information needed for the setup, installation, initial start up, sanitation and maintenance of this ice machine. Be certain that the information applies to the model in question. If no model is listed, the information applies to all models. 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. [. . . ] If the discharge temperature exceeds the design maximum the controller shuts the unit off. Checks for a "bin full" signal throughout the cycle. · · · · · · Water level = below harvest position Condenser fan will be off Water inlet valve will be off Water pump will be ON Compressor will be ON Hot gas valve will be off At this point Harvest begins and the AutoIQ Controller switches the Harvest indicator light ON. Restarts: If restarting after shutting off because the bin was 6. Measures the reservoir water temperature. If the full, the first freeze cycle sequence is like this: machine is operating correctly, the reservoir water temperature will fall at a standard rate. Controller will be checking to see if the water 2. If not, it re-checks the discharge line temperature. 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 it does not, it is assumed that there is a water pump problem and the controller shuts the unit off. If the water level does "measure up" the water pump is restarted and the AutoIQ Controller then measures how long it takes to lower the water level. If the water level does not fall, the machine Shuts Down on a Water Error. Once per cycle the machine will shut off the water pump. It only does this when the water temperature reaches a preset minimum. The pump will only be off for a few seconds. Water valve opens to fill the reservoir. Note: If there is a power interruption, after power is restored the machine will restart, go thru a brief Freeze cycle and then go thru a 5 minute Harvest cycle. The Freeze light will be blinking - even when the machine is in harvest. Error Restarts: The machine automatically attempts to restart 50 minutes after a shut down. If another problem occurs in the next cycle, the machine will attempt one more restart. If another problem occurs in the next cycle, the machine will be off and must be manually reset. January 2000 Page 23 CME306 & CME456 Technicians Only: Harvest Cycle Operational Sequence Harvest The (air cooled model) fan(s) is(are) off. Diagnostic Lights and Manual Resets The controller will shut the machine off if a malfunction is sensed. The Controller will restart The purge valve opens, and will remain open for the machine 2 times, with a 50 minute interval 40 seconds. If a malfunction is still present after the second restart, the machine will then shut The water pump shuts off, it will restart in less than off and must be manually reset. [. . . ] It must use polyol ester refrigerant oil, and that oil is very water absorbent. The system must not be open for more than 15 minutes. An electronic leak detector capable of locating HFC-134a type refrigerant must be used to locate refrigerant leaks. An HFC type liquid line dryer must be used. [. . . ]