Scotsman CME1202 User Manual
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Scotsman CME1202 User Manual

Scotsman CME1202 User Manual

Scotsman cme1202 ice machine: user guide
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INTRODUCTION
To the owner or user: This service manual is
intended to provide you and the maintenance or
service technician with the information needed to
install, start up, clean, maintain and service this
ice system.
FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2
BACK VIEW OF CABINET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3
FOR THE INSTALLER: Scotsman Remote Condenser . . . . . . . . . . . . . . . . . . . . . . page 7
FOR THE INSTALLER: Coupling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8
FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 10
INITIAL START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 12
COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 16
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 19
SYSTEM SPECIFICATIONS: CME1202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 21
SYSTEM SPECIFICATIONS: CME1402 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 22
SERVICE DIAGNOSIS: Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 24
SERVICE DIAGNOSIS: Refrigeration and/or Mechanical . . . . . . . . . . . . . . . . . . . . . page 26
SERVICE DIAGNOSIS: Bin Ice Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . page 27
REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 28
REFRIGERATION SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 31
Parts Lists and Wiring Diagrams are located in
the center of this manual, printed on yellow
paper.
This manual was printed on recycled paper.
Keep this manual for future reference.

Table of Contents

CME1202R & CME1402R
Note this symbol when it appears in the
manual. It indicates a potential hazard.
January 1995
Page 1

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Summary of Contents for Scotsman CME1202

  • Page 1: Table Of Contents

    CLEANING ..........page 19 SYSTEM SPECIFICATIONS: CME1202 ......page 21 SYSTEM SPECIFICATIONS: CME1402 .

  • Page 2: For The Installer

    ** The unit is shipped with the charge in the receiver and, beginning with May 1996 production, 112 oz in the Scotsman ERC401 condenser. For re-charging purposes, see the table below. Use Scotsman remote condenser RCE1401 or ERC401. Use precharged tubing kit RTE25 (25’) or RTE40 (40").

  • Page 3: Back View Of Cabinet

    CME1202R & CME1402R BACK VIEW OF CABINET June 1996 Page 3...

  • Page 4: Erc401 Specifications

    CME1202R & CME1402R ERC401 SPECIFICATIONS ERC Dimensions " " " June 1996 Page 4 " " "...

  • Page 5: For The Installer: Location & Assembly

    Use bolts and straps found on the back of the ice machine to secure the ice machine to the bin. When alignment and leveling are completed, tighten the bolts to secure the mounting straps.

  • Page 6: Evaporator Cover

    Install the panel retaining bracket onto the bottom ice machine before placing the upper unit on it. Place additional gasket onto the top edges of the bottom ice machine. Carefully lift the uncrated top unit onto the bottom one and align the two cabinets.

  • Page 7: For The Installer: Scotsman Remote Condenser

    FOR THE INSTALLER: Scotsman Remote Condenser Locate the condenser as near as possible to the interior location of the ice maker. Location of the condenser is limited by the specific length of precharged refrigerant tubing supplied for the application. The pre-charged tubing connects the ice maker to the remote condenser.

  • Page 8: For The Installer: Coupling Instructions

    CME1202R & CME1402R FOR THE INSTALLER: Coupling Instructions CAUTION The couplings on the sets of precharged lines are self sealing when installed properly. Carefully follow the instructions: Initial Connections: 1. Remove the protector caps and plugs. Wipe the seats and threaded surfaces with a clean cloth to be certain that no foreign matter remains on them.

  • Page 9: For The Electrician

    SWITCH POWER SUPPLY CME1202R & CME1402R The Scotsman remote condenser is designed to be powered from the ice machine. There is a separate electrical junction box at the back of the ice maker for the remote condenser. Wire the remote condenser to the ice maker in accordance with local and national electric codes.

  • Page 10: For The Plumber

    In some cases a plumber will be required. Water Limitations: An ice machine is a food manufacturing plant, it takes in a raw material, water, and turns it into a food product, ice. The purity of the water is very important in obtaining pure ice and in maximizing product life.

  • Page 11: Final Check List

    Registration form been properly ASSEMBLY filled out? Check for correct model and serial numbers from Serial nameplate, then mail to the SCOTSMAN factory. 12. Has the owner/user been SUMP DRAIN given the Service Manual and OPTIONAL instructed how to operate and...

  • Page 12: Initial Start Up

    2. Switch on the electrical power. Electrical power BUTTON MICROSWITCH must be supplied to the ice machine for 4 hours before starting the compressor for the first time. The crankcase heater will now heat the compressor’s oil. The oil is warmed to evaporate any refrigerant that may have collected in it.
  • Page 13 14. Fill out the Warranty Registration and Customer Evaluation form. Explain to the user the maintenance requirements of the ice machine. Inform the user of the name and telephone number of the local SCOTSMAN Distributor or service agency. June 1996 Page 13...

  • Page 14: Freezing Cycle Operation

    CME1202R & CME1402R FREEZING CYCLE OPERATION Water from the sump assembly is pumped to the water distributor system at the top of each evaporator plate. From the water distributor the water cascades by gravity over all cells of the plate and to the sump assembly below.

  • Page 15: Harvest Cycle - Hot Gas Bypass

    HARVEST CYCLE - HOT GAS BYPASS When the timer switches the ice maker into the harvest cycle, high pressure, high temperature gas refrigerant being discharged from the compressor is diverted from the condenser through the hot gas solenoid valve into each evaporator plate. During this cycle, the refrigerant bypasses the condenser.

  • Page 16: Component Description

    CME1202R & CME1402R COMPONENT DESCRIPTION Cube Size Control This reverse acting thermostat controls the length of the freezing cycle. It is sensing the temperature of the suction line. When the suction line gets cold enough, the cube size control closes (on temperature fall) and starts the timer.
  • Page 17 Bin Level Control This electronic control uses sound waves to measure the distance between the bottom of the ice machine and the top of the ice in the bin. It is designed to control the machine’s ice production to maintain that distance.
  • Page 18 CME1202R & CME1402R COMPONENT DESCRIPTION Water Inlet Solenoid Valve The water inlet solenoid valve fills the sump assembly with water and excess water overflows out the standpipe and down the drain. This action fills and rinses the sump during each harvest cycle.

  • Page 19: Cleaning

    CLEANING A Scotsman Ice System represents a sizable investment of time and money in any company’s business. In order to receive the best return for that investment, it MUST receive periodic maintenance. Maintenance and Cleaning should be scheduled at a minimum of twice per year.
  • Page 20 6. Reverse steps 1-4 to reassemble. SCREEN To remove scale: 1. Mix a cleaning solution of 4 ounces of Scotsman Ice Machine Cleaner to 4 pints of hot (95 F.) water. 2. Remove all ice from the bin. 3. Using rubber gloves, dip a nylon scouring pad into the cleaning solution, and scrub the scale off of the liner.

  • Page 21: System Specifications: Cme1202

    High pressure safety, Manual reset, cut out at 450 PSIG Ice Level Control Maximum Range = 8 feet Partial Fill Setting: = 21" - 22" from the base of the ice machine Timer 1 revolution takes 10 minutes (changed from 8 in June 1996)

  • Page 22: System Specifications: Cme1402

    High pressure safety, Manual reset, cut out at 450 PSIG Ice Level Control Maximum Range = 8 feet Partial Fill Setting = 21" - 22" from the base of the ice machine Timer 1 revolution takes 10 minutes (changed from 8 in June 1996)

  • Page 23: Adjustments

    ADJUSTMENTS Electrical power present in the control box can cause personal injury. Disconnect power before beginning to adjust timer. Adjustment Of The Timer & Switch Assembly One complete revolution of the cam on the timer takes eight minutes. The harvest time set at the factory is three and a half minutes.

  • Page 24: Service Diagnosis: Water

    CME1202R & CME1402R SERVICE DIAGNOSIS: Water SYMPTOM No ice is made Cubes are not uniform in shape Long Freeze Cycle Makes thick ice/freezes up Cubes too large Low Capacity Unit runs out of water POSSIBLE CAUSE Inlet water valve will not open or is dirty No water being pumped over evaporators.

  • Page 25: Service Diagnosis: Electrical And/Or Adjustments

    SERVICE DIAGNOSIS: Electrical and/or Adjustments SYMPTOM Machine does not operate Makes thick ice/freezes up Runs, makes no ice Long freeze cycle Cubes too small Cubes too large Compressor cycles on and off on pump down control Compressor will not run Unit cycles on and off anytime in any cycle CME1202R &...

  • Page 26: Service Diagnosis: Refrigeration And/Or Mechanical

    CME1202R & CME1402R SERVICE DIAGNOSIS: Refrigeration and/or Mechanical SYMPTOM Poor harvest Unit cycles off during freeze or harvest Low capacity Unit shuts off before bin is full Compressor cycles on and off Frost on compressor POSSIBLE CAUSE Hot gas valve does not open Head pressure control valve does not maintain enough head pressure.

  • Page 27: Service Diagnosis: Bin Ice Level Control

    SERVICE DIAGNOSIS: Bin Ice Level Control CONDITION Ice Machine does not run, it has power to it, the high pressure control is closed, the on/off switch is set to ON (the compressor will not operate until the liquid line valve opens, but the pump should be working if there is no ice in the bin).

  • Page 28: Removal And Replacement

    CME1202R & CME1402R REMOVAL AND REPLACEMENT Electrical Shock Hazard. Electrical shock can cause personal injury. Disconnect power before beginning to service components. Water Distributor Tubes And Manifold Tubes To remove the water distributor tube and manifold tube: 1. Remove the front panel. 2.
  • Page 29 4. Use corbin clamp pliers to loosen and slide corbin clamps on hoses away from pump. 5. Remove screws retaining pump to bracket. 6. Pull pump out of ice machine. 7. Reverse to reassemble. 8. Replace front panel. 8. Reconnect electrical power.
  • Page 30 4 hours. If the compressor was warm throughout the replacement process, the ice machine may be restarted without waiting to re-warm the compressor. Hot Gas or Liquid Line Valve.

  • Page 31: Refrigeration Service

    TXV, the component must be protected by heat sink material. Recover, reclaim or recycle refrigerant. The method chosen is up to the service company. Any refrigerant placed into a Scotsman ice machine must meet ARI spec 700-93. Reclaim programs are available through most refrigerant wholesalers.

  • Page 32: Liquid Charging

    10. Re-open the manifold valves until all liquid has flowed out of the hoses. 11. Shut the low side access valve on the ice machine. 12. Remove hoses from ice machine and replace all caps. Hose Connection Schematic for Liquid Charging Allen...

This manual is also suitable for:

Cme1202rCme1402Cme1402r

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