User manual SCOTSMAN CME1856W

[. . . ] CME1856W Introduction This product manual contains the information needed for the setup, installation, initial start up, sanitation and maintenance of this ice machine. This machine incorporates advanced technology, including a scroll compressor. 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. Be certain that the information applies to the model All Scotsman CM3 models, like this one, feature in question. [. . . ] If no cubes fall (or are sensed) by the end of the Maximum Harvest Time, the machine senses a Refrigeration error. If the next cycle also produces a Refrigeration error, the machine will shut down. Note: The last Harvest cycle before shutting off on Bin Full will be 6 minutes long. Note: The machine will not restart for 4 minutes after switching off on Bin Full, unless the Freeze button is pressed. Bin Full: The controller will switch on the compressor for 30 seconds after 12 hours of off time to keep refrigerant out of the compressor oil. Single Phase: Power Interruptions: If the power supply to a single phase unit is interrupted for less than a second, a time delay relay will keep the compressor from restarting until 30 seconds have passed. Continuous Run Time A unit that operates 24 hours a day 7 days a week is too small for the user's needs. To maintain harvest integrity, the controller will extend the harvest time to 6 minutes every 15th consecutive harvest cycle. Bin Thermostat: In normal ambients the thermostat will react to ice on the bulb in a few seconds. Reaction after removal will take about a minute under normal conditions, and longer in colder rooms. Stacked Units: If the bottom unit is in harvest and receives a signal from the top unit that it is also in Harvest, the bottom unit will stay in harvest for about 6 minutes. If the bottom unit is shut off, but its controller still has power, the top unit may continue to operate. If the bottom unit's power is shut off, the top unit will shut down on bin full at the end of the next cycle. If the top unit's power is shut off, it does not impact the bottom unit. Either one may be switched off at the controller without impacting the other. Diagnostic Light Code Table If a Diagnostic Light Blinks once and repeats Blinks twice and repeats Blinks three times and repeats Is ON all the time Water Light Water pump will not start Lack of water fill not used Refrigeration Light Very long ice harvest No harvest of ice High Discharge Temperature Check for low discharge temperature or long freeze cycle Water valve leaking thru rapidly Both ON all the time Check for thermistor set unplugged or failed November 2001 Page 23 CME1856W Sanitation and Cleaning It is the User's responsibility to keep the ice machine and ice storage bin in a sanitary condition. Ice machines also require occasional cleaning of their water systems with a specifically designed chemical. This chemical dissolves mineral build up that forms during the ice making process. Sanitize the ice storage bin as frequently as local health codes require, and every time the ice machine is cleaned and sanitized. The ice machine's water system should be cleaned and sanitized a minimum of twice per year. In Place Cleaning of the Ice Machine Water System: 1. Continue the rinsing process for 20 minutes, then any ice that may be on the evaporators and warms push the off button to switch the machine off. Wait for the machine to finish the Harvest cycle to step 19 to finish the cleaning process. [. . . ] Evaporators In the unlikely event that an evaporator may need to be replaced, do NOT braze the evaporator joints when the evaporators are seated in the freezing compartment, instead lift them up slightly so that the joints to be brazed are above the top edge of the freezing compartment. CME1856W Refrigerant 1. It must use polyol ester refrigerant oil, and that oil is very water absorbent. 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. [. . . ]