Page 1: Table Of Contents
Keep it for future reference. There are 3 models covered in this manual: CME506R, a 115 volt, dual evaporator • machine CME656R and CME806R, 230 volt, dual •...
Page 2: Specifications
* The remote condenser is designed to work in temperatures from -20 Refrigerant charge for CME506R is 224 ounces; CME656R or CME806R use 232 ounces when connected to ERC201, and 280 ounces when connected to ERC402. All R-404A. Use precharged tubing kits, RTE25 (25’) or RTE40 (40’).
Page 3: Pre-Installation
That water rinse, combined with water filters, prolongs the times between needed water system cleaning. Note: All Scotsman CM 3 models, like those described in this manual, feature Scotsman’s AutoIQ™ control system and ReliaClean™ water system cleaning process.
Page 4: Location
If the ice machine has not been unpacked, do so now. Remove the carton from the skid. Lift the ice machine off the skid directly onto the bin.
Page 5: Stacking
CME506R, 656R, 806R: AutoIQ Cubers Stacking: Models CME256, CME506, CME656 and CME806 may be stacked together in any combination. Use kit number KSCME6-30. 1. Remove the front, left side and top panels from the bottom machine. Discard the top panel.
Page 6: Remote Condenser Location
Location Limits - condenser location must not exceed ANY of the following limits: Maximum rise from the ice machine to the • condenser is 35 physical feet Maximum drop from the ice machine to the •...
Page 7: For The Installer: Remote Condenser
Locate the condenser as near as possible to the interior location of the ice machine. Note: The location of the condenser is relative to the ice machine is LIMITED by the specification on the prior page. Meet all applicable building codes.
Page 8: Coupling Instructions
2. Lubricate the inside of the couplings, especially the O-rings, with refrigerant oil. Clean and Lubricate Couplings 3. Position the fittings on the correct connections on the condenser and ice machine. ² discharge line (schrader valve end) • goes to the remote condenser fitting marked “discharge line”.
Page 9: Electrical
CME506R, 656R, 806R: AutoIQ Cubers Electrical: All models must be installed with the correct wire size and type per the National Electric Code. Locate the nameplate on the back of the cabinet and find the numbers for Voltage, Phase, Minimum Circuit Ampacity and Maximum Fuse Size.
Page 10: Electrical Connections: Kcmr230 Fan Relay Kit (Cme656R & Cme806R Only)
3. Route the connecting wires from the first ice machine’s fan wires to the relay kit terminal strip posts marked: No. 1 Ice Machine. 4. Route the connecting wires from the second machine’s fan wires to the relay kit terminal strip posts marked: No.
Page 11: Plumbing
It must be vented at the back of the cabinet. The ice storage bin will have a drain out the back “ or base, depending upon the model. Note: Scotsman HTB555 (shown in this manual) may be drained either out the back or the base. January 2000 Page 11...
Page 12: After Utility Connections
CME506R, 656R, 806R: AutoIQ Cubers After Utility Connections: 1. Level the cabinet, use the leg levelers on the end of the legs to adjust the cabinet height. 2. Wash out the bin. If desired, the interior of the bin could be sanitized.
Page 13: Component Location And Function
AutoIQ Controller: Controls the complete operation of the ice machine. Turns it on and off; switches it between cycles; shows information via indicator lights; and shuts the machine down if there is a problem.
Page 14: Autoiq Controller
AutoIQ Controller: Indicator Lights: Bin Full: On when bin is full, goes on and • off as ice falls during a harvest cycle. Freeze: On when the unit is in the Freeze • cycle, blinks when a freeze cycle is pending. Harvest: On when the unit is in the Harvest •...
Page 15: Initial Start Up
9. After a few minutes the machine will return to a freeze cycle. 10. Fill out the Customer Evaluation and Warranty Registration. Send it to Scotsman. 11. Return all panels to their normal positions. 12. Inform the user of the location and telephone number of the local service company.
Page 16: Adjustments
Adjustments: If there was a problem during Initial Start If an error light came on, check the following. 1. Water error. A water error could have been determined by the AutoIQ Controller if the inlet water valve does not fill the reservoir or if the water pump does not start and lower the water level in the reservoir.
Page 17: Adjustments
Adjustments: Thermostatic Expansion Valve: The TXV is not adjustable, do not attempt to adjust How to Adjust the Amount of Water Purge Adjustment is done by use of the control buttons on the AutoIQ Controller. Examine the next section to become familiar with the AutoIQ Controller before beginning.
Page 18: How To Operate The Autoiq Controller
3. Clean Button: Pushing and releasing this button will cause the machine to only power the water pump for circulation of ice machine cleaner. After the ice machine cleaner has circulated for about 10 minutes a second push of this button...
Page 19: 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. The AutoIQ Controller operates the ice machine by monitoring several input measures and switching various loads on and off. Water System: Water flows into the ice machine during the harvest cycle from thru the inlet water valve.
Page 20: Technicians Only: Freeze Cycle Operational Sequence
Technicians Only: Freeze Cycle Operational Sequence Assuming the machine has been operational, the Freeze cycle begins with the end of the Harvest Cycle: Water level overflowing • Water Inlet Valve is OFF • Water Pump is ON • Liquid Line Valve is OPEN •...
Page 21: Technicians Only: Harvest Cycle Operational Sequence
Technicians Only: Harvest Cycle Operational Sequence Harvest The water valve opens and fills the reservoir to the Full level. The water pump shuts off. It will restart in less than a minute. Note: Machines built after August 1996: If the machine remains in the harvest cycle •...
Page 22: Sanitation And Cleaning
Sanitation and Cleaning It is the User’s responsibility to keep the ice machine and ice storage bin in a sanitary condition. Without human intervention, sanitation will not be maintained. 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.
Page 23: Additional Maintenance
To Sanitize the Ice Storage Bin 1. Remove all ice. 2. Remove baffle. 3. Switch ice machine OFF or wait for it to be in a cleaning cycle. 4. Mix a 1 gallon solution of warm (95-115 o F.) water and sanitizer. Follow local codes for sanitizer.
Page 24: Additional Maintenance: Water Distributors
Soak or scrub the distributors in or with a solution of Scotsman Ice Machine Cleaner and warm potable water. 9. Return the water distributors to their normal installed position.
Page 25: Additional Maintenance: Inlet Water Valve Screen
Additional Maintenance: Inlet Water Valve Screen The inlet water valve has a screen on its inlet side to keep debris from flowing into the valve. In some cases, this screen may become clogged or restricted by debris build up. Check for the proper water flow: Flow rate is 1.25 G.P.M.
Page 26: Additional Maintenance: Bin Controls, Condenser
7. Examine the bottom of the brackets, there are two sensors in each bracket, check that they are clear of mineral build up. They may be wiped clean with ice machine cleaner to assist in removal of the build up. Note: Do NOT use abrasive materials or cleaner on the bin sensor lenses.
Page 27: Service Diagnosis: Controller Diagnostic Light Analysis
Service Diagnosis: Controller Diagnostic Light Analysis Problem or Symptom Possible Cause Machine is off Bin is full, ice in cube port Power is off, check lights. Transformer is open Unit has been switched off or has finished a Clean cycle, Off light is glowing Unit has Shut Down Unit is off &...
Page 28: Service Diagnosis
Service Diagnosis Problem or Symptom Possible Cause Unit is off because of a Bin controls did not sense “Harvest Problem” ice falling, unit stayed in harvest until the maximum harvest time ran out. Bin controls or AutoIQ Controller may have failed. Other components may have failed Cubes are too large...
Page 29: Service Diagnosis: Components
Service Diagnosis: Components Problem or Symptom Possible Cause Fan motor does not Open motor windings, or turn. seized bearings No power to fan motor Pump motor does not Open motor windings, or turn seized bearings No power to pump Hot Gas Valve does Open solenoid coil.
Page 30: Service Diagnosis
Service Diagnosis Problem or Symptom Poor harvest Low capacity Compressor cycles on and off Possible Cause Hot gas valve does not open Head pressure control valve does not maintain enough pressure (in freeze) High discharge pressure, from a dirty condenser or faulty fan motor Extreme hot location Extremely hot condenser...
Page 31: Ptcr Diagnosis
PTCR Diagnosis The CME506R, CME656R and CME806R D Series all use a PTCR (Positive Temperature Coefficient Resistor) in place of a conventional start relay and start capacitor. Power from the contactor connects to the • PTCR and to the Run Capacitor.
Page 32: Operational Characteristics: Cme506R
• Harvest: 12- 13 • Typical Harvest Ice Weight 6.5 - 7 lb. • Note: Beginning with CME506R - E series, the refrigeration system uses 2 internally equalized thermostatic expansion valves. F. condenser air 70 F. indoor air, F. water 21 - 24 1.5 - 2.5...
Page 33: Operational Characteristics: Cme656R
Operational Characteristics: CME656R Cycle Times (minutes): Freeze Harvest System Pressures (PSIG): Suction: End of Freeze Suction: Peak in Harvest Discharge: 5 minutes into Freeze Discharge: Minimum in Harvest Refrigerant Charge CME656R uses 232 ounces when • connected to ERC201, or 280 ounces when connected to ERC402.
Page 34: Operational Characteristics: Cme806R
Operational Characteristics: CME806R Cycle Times (minutes): Freeze Harvest System Pressures (PSIG): Suction: End of Freeze Suction: Peak in Harvest Discharge: 5 minutes into Freeze Discharge: Minimum in Harvest Refrigerant Charge CME806R uses 232 ounces when connected to ERC201, or 280 ounces when connected to •...
Page 35: Removal And Replacement
Removal and Replacement Inlet Water Valve 1. Remove the front panel. 2. Shut off the water supply. 3. Push and release the OFF button. 4. Pull the wire harness off the inlet water valve. 5. Remove screws holding the inlet water valve to the cabinet.
Page 36: Removal And Replacement
7. Lift pump up slightly and pull discharge hose from pump. 8. Remove pump and water level sensor from ice machine. 9. Pull up and forward to remove standpipe. 10. Disconnect back of cabinet drain system. 11. Remove nut on inside of reservoir (where standpipe was).
Page 37: Removal And Replacement: Autoiq Controller
Removal and Replacement: AutoIQ Controller 1. Disconnect the electrical power. 2. Remove the front panel. 3. Remove mounting screw holding controller to cabinet. 4. Touch a metal surface to discharge any static electricity. 5. Pull controller out slightly and unplug all electrical connections.
Page 38: Removal And Replacement: Water Level Sensor
Removal and Replacement: Water Level Sensor 1. Remove front panel. 2. Push and hold the OFF button. Release it when the machine stops. 3. Trace wire harness from water level sensor to the Controller (#2). Unplug the harness from the controller.
Page 39: Removal And Replacement
Refrigerant: This ice machine uses R-404A or HP62 as a refrigerant. It has several unique characteristics. A. It must use polyol ester refrigerant oil, and that oil is very water absorbent.
Page 40: Access Valves
7. With a sight glass or charge faster in the hose to the low side port, start the ice machine. 8. Open the low side service access valve. 9. Crack open the low side manifold valve and watch the scale and sight glass.
Page 41: Before Calling For Service
Before Calling for Service Check the following: 1. Has the water supply to the ice machine or building been shut off? If it has, the ice machine will automatically restart within 25 minutes after water begins to flow to it.
Page 43 7. Pour 12 ounces of Scotsman Ice Machine Cleaner into the reservoir water. Return the evaporator cover to its normal position. 8. Mix a solution of 8 ounces of Scotsman ice machine cleaner and 1 gallon of warm (95-115 F.) water. Use the solution to scrub the cascading shield and cube deflector in the separate container.

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