Scotsman CME456R Product Manual
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Scotsman CME456R Product Manual

Scotsman CME456R Product Manual

Scotsman cme456r ice machine: user guide
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Table of Contents

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Download this manual See also: User Manual
Introduction
This product manual contains the information
needed for the setup, installation, initial start up,
sanitation and maintenance of this ice machine.
Keep it for future reference.
Be certain that the information applies to the model
in question. If no model is listed, the information
applies to all models.
Specifications . . . . . . . . . . . . . . Page 2
Pre-Installation . . . . . . . . . . . . . . Page 4
Coupling Instructions . . . . . . . . . . . Page 9
Fan Relay Kit . . . . . . . . . . . . . . Page 10
Electrical . . . . . . . . . . . . . . . . Page 11
Plumbing . . . . . . . . . . . . . . . . Page 12
After Utility Connections . . . . . . . . Page 13
AutoIQ Controller . . . . . . . . . . . . Page 15
Initial Start Up . . . . . . . . . . . . . . Page 16
. . . . . . . . . . . . . . . . . . . . . . Page 21
Parts Lists and Wiring Diagrams are in the section at the center of this manual.
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.

Table of Contents

Page 18
December 2000
Page 1
Sanitation and Cleaning . . . . . . . . Page 23
Additional Maintenance . . . . . . . . . Page 24
Removal and Replacement . . . . . . . Page 32
. . . . . . . . . . . . . . . . . . . . . . Page 33
Refrigerant . . . . . . . . . . . . . . . Page 35
CME456R
.
Page 31

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Summary of Contents for Scotsman CME456R

  • Page 1: Table Of Contents

    Specifications ....Page 2 Condenser and Ice Machine Layouts . . Page 3 Pre-Installation ....Page 4 Location &...

  • Page 2: Specifications

    Remote Condenser Operational Limits Minimum -20 o F. Air Temperature Voltage (60 Hz) Scotsman reserves the right to make design changes and/or improvements at any time. Specifications and designs are subject to change without notice. Scotsman assumes no liability or responsibility of...

  • Page 3: Condenser And Ice Machine Layouts

    Condenser and Ice Machine Layouts Bin Stat Bracket Mounting Holes Bin Stat Thru Hole 12.88 in 32.7 cm 3.75 in 9.5 cm 11.38 in 28.9 cm 1.25 in 3.2 cm 1.75 in 2.63 in 4.4 cm 6.7 cm 8.75 in 22.2 cm...

  • Page 4: Pre-Installation

    Other Applications: Check sales literature for additional information. Note: Slope-front bins must have an internal baffle. Scotsman BH375 has the required baffle, and the BH260 does not need one. Baffle must be approximately in the position shown in the diagram below.

  • Page 5: Location & Assembly

    Level the top edge of the bin front to back and left to right. If the ice machine has not been unpacked, do so now. Remove the carton from the skid. Remove shipping straps.

  • Page 6: Bin Control: Optional Installation

    The normal bin control is the ice sensor system. A bin thermostat may be required in some cases, It must be field installed after the ice machine has been placed on the bin. Before starting, remove the front panel and any baffle in the bin.

  • Page 7: For The Installer: Remote Condenser

    See the Coupling Instructions for final connections. If two CME456R ice machines are to be installed, mark one as Ice Machine #1 and the other as Ice Machine #2. Tag their refrigerant lines the same way.

  • Page 8: 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 9: Coupling Instructions

    “ liquid line goes to the ice maker • fitting marked “liquid line”. Note: The system charge is contained in the receiver tank of the ice machine. Only “holding" charges are present in the “pre-charged" tubing or the condenser. Final Connections: 4a.

  • Page 10: Fan Relay Kit

    Power Before Beginning 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. Put the Hot (line) wire on Terminal 1 and the • Neutral wire on Terminal 2.

  • Page 11: Electrical

    Voltage variation must not exceed the limits listed on page 2. The remote condenser is designed to be powered from the ice machine. A separate knockout hole has been provided in the ice maker electrical junction box. Interconnecting...

  • Page 12: Plumbing

    " The ice storage bin will have a drain out the back or base, depending upon the model. The drain for the ice machine and the ice storage " bin must be SEPARATE or the ice machine’s drain water may run into the bin and MELT THE ICE.

  • Page 13: After Utility Connections

    After Utility Connections 1. Wash out the bin. If desired, the interior of the bin could be sanitized. 2. Locate the ice scoop (if supplied) and have it available for use when needed. 3. Switch on the electrical power. Do not start the machine for 4 hours.

  • Page 14: Component Location And Function

    Component Location and Function Reservoir: Contains the water used to make ice. Water Inlet Valve: Opens to allow water into the reservoir. Freezing Compartment: Location of the evaporators. Ice forms on the evaporators, and is released when warmed up during the harvest cycle.

  • Page 15: 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 16: Initial Start Up

    10. The reservoir refills at the beginning of Freeze. 11. Fill out the Customer Evaluation and Warranty Registration. Send it to Scotsman. 12. Return all panels to their normal positions. 13. Inform the user of the location and telephone number of the local service company.

  • Page 17: Adjustments

    Adjustments If there was a problem during Initial Start If a diagnostic light came on, check the following. 1. Water. 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 18: How To Operate The Autoiq Controller

    After the ice machine cleaner has circulated for about 10 minutes a second push of this button will switch on the rinsing system to flush out the dissolved scale and ice machine cleaner.

  • Page 19: How The Electronic Cuber Works

    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. Refrigeration System: The refrigeration system is similar to that of most commercial cube ice machines. Heat is removed from the water and discharged out the condenser during the freeze cycle.

  • Page 20: Water System

    After the purge valve has closed, the inlet water valve opens and water flows into the ice machine. The water valve will NOT be open the complete length of the harvest cycle.

  • Page 21: Technicians Only: Freeze Cycle Sequence

    Technicians Only: Freeze Cycle Sequence Assuming the machine has been operational, the Freeze cycle begins with the end of the Harvest Cycle: Water Inlet Valve is Closed • Water Pump is ON • Compressor is ON • Hot Gas Valve is Open •...

  • Page 22: Technicians Only: Harvest Cycle Sequence & Other Notes

    Technicians Only: Harvest Cycle Sequence & Other Notes Harvest The Purge Valve will be open for 40 seconds. The water pump shuts off, it will restart before 40 seconds, the restart time is based on the Purge Level Setting. The pump restarts and pumps water out of the reservoir until the purge valve closes.

  • Page 23: 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 24: Additional Maintenance

    Soak or scrub the distributors in or with a solution of Scotsman Ice Machine Cleaner and warm potable water. 8. Return the water distributors to their normal installed position.

  • Page 25: Additional Maintenance: Inlet Water Valve Screen

    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 26: Additional Maintenance: Ice Sensors, 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 ice sensor lenses.

  • Page 27: Service Diagnosis: Diagnostic Light Analysis

    Service Diagnosis: Diagnostic Light Analysis Problem or Symptom Possible Cause Machine is off Bin is full Bin full light is ON, no ice in cube port Bin thermostat is closed Power is off, check Lights. Transformer is open Unit has been switched off or has finished a Clean cycle, Off Light is glowing...

  • Page 28: Service Diagnosis

    Service Diagnosis Problem or Symptom Possible Cause Unit is off because of a Ice sensors 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 Scale in water system. Water or Air Temperatures too cold Low system charge Bypass solenoid does not open Check valve leaks back Hot gas valve does not open Head pressure control valve does not maintain enough pressure (in freeze)

  • Page 31: Operational Characteristics: Cme456R

    Operational Characteristics: CME456R Cycle Times: Freeze Harvest System Pressures (PSIG) (minutes): Suction: End of Freeze Suction: Peak in Harvest Discharge: 5 minutes into Freeze Number of Evaporators: • Refrigerant Charge 192 ounces of R-404A • Typical Compressor Amps, 7 - 13 •...

  • Page 32: Removal And Replacement

    Removal and Replacement Inlet Water Valve 1. Remove the front and left side panels. 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 back panel.

  • Page 33: Removal And Replacement: Autoiq Controller

    CME456R 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 34: Removal And Replacement: Water Level Sensor

    Removal and Replacement: Water Level Sensor Electrical Shock Hazard Disconnect Electrical Power Before Beginning 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).

  • Page 35: Refrigerant

    Refrigerant 1. This ice machine uses R-404A or HP62 as a refrigerant. It has several unique characteristics. A. It is a near-azeotrope, and must be liquid charged. B. 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.

  • Page 36: 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 yes, the ice machine will automatically restart within 25 minutes after water begins to flow to it. 2. Has power been shut off to the ice machine? If yes, the ice machine will automatically restart when power is restored.

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