Scotsman CME1202 User Manual

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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.
Table of Contents
FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2
AIRFLOW ON AIR COOLED MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3
UTILITY CONNECTION LOCATIONS: Back Views . . . . . . . . . . . . . . . . . . . . . . . . page 4
FOR THE INSTALLER: Location & Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5
FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7
FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8
FINAL CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9
INITIAL START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 10
FREEZING CYCLE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 13
HARVEST CYCLE - HOT GAS BYPASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 14
COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 18
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 20
SYSTEM SPECIFICATIONS: CME1202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 22
SYSTEM SPECIFICATIONS: CME1402 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 23
SERVICE DIAGNOSIS: Electrical and/or Adjustments . . . . . . . . . . . . . . . . . . . . . . page 24
SERVICE DIAGNOSIS: Refrigeration and/or Mechanical . . . . . . . . . . . . . . . . . . . . . page 25
SERVICE DIAGNOSIS: Ice Level Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . page 26
REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 27
REFRIGERATION SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29
R-404A INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 30
LIQUID CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
Note this symbol when it appears in the
manual. It indicates a potential hazard.
CME1202 & CME1402
January 1995
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Summary of Contents

Page 1 - CME1202 & CME1402

INTRODUCTIONTo the owner or user: This service manual isintended to provide you and the maintenance orservice technician with the information needed t

Page 2

INITIAL START UP1. Remove the front panels by removing screws atthe base and pulling out.2. Remove two screws and the control box cover.3. Check that

Page 3

INITIAL START UP12. After an ice harvest check Cube Size.There is just enough water available in thereservoir to make one full sized batch of cubes.Th

Page 4

INITIAL START UP13. Check harvest time. There must be enoughtime in the harvest cycle to defrost all the cubes,but not an excessive amount that will w

Page 5

FREEZING CYCLE OPERATIONWater from the sump assembly is pumped to thewater distributor system at the top of eachevaporator plate. From the water distr

Page 6

HARVEST CYCLE - HOT GAS BYPASS When the timer switches the ice maker into theharvest cycle, the finish relay is de-energized, andthe hot gas valve and

Page 7

COMPONENT DESCRIPTIONCube Size ControlThis reverse acting thermostat controls the lengthof the freezing cycle. It is sensing the temperatureof the suc

Page 8

COMPONENT DESCRIPTIONBin Level ControlThis electronic control uses sound waves tomeasure the distance between the bottom of theice machine and the top

Page 9

COMPONENT DESCRIPTIONWater Inlet Solenoid Valve The water inlet solenoid valve fills the sumpassembly with water. Extra water overflows out theoverflo

Page 10

CLEANINGA Scotsman Ice System represents a sizable investment of time and money in any company’s business. Inorder to receive the best return for tha

Page 11

CLEANINGAIR COOLED CONDENSER1. Disconnect electrical power.2. Remove front panel.3. Clean or replace the air filter.4. Check to see that the inside of

Page 12

Model Number Dimensions(w/o bin)W" x D" x H"BasicElectricalMinimumCircuitAmpacity*MaximumFuseSize+Refrigerant ChargeR-404ACondenserType

Page 13

ADJUSTMENTSAdjustment Of The Cube Size ControlCAUTIONBEFORE adjusting the cube size control, checkother possible causes for cube size problems,refer t

Page 14

ADJUSTMENTSAdjustment Of The Timer & Switch AssemblyOne complete revolution of the cam on the timertakes eight minutes. The normal setting is thre

Page 15

SYSTEM SPECIFICATIONS: CME1202The following numbers can be used as a guideline. There will be some variation from unit to unit.Column head numbers = A

Page 16

SYSTEM SPECIFICATIONS: CME1402The following numbers can be used as a guideline. There will be some variation from unit to unit.Column head numbers = A

Page 17

SERVICE DIAGNOSIS: Electrical and/or AdjustmentsSYMPTOM POSSIBLE CAUSE PROBABLE FIXNothing operates Bin level control holding machineoff Bin is full -

Page 18

SERVICE DIAGNOSIS: Refrigeration and/or MechanicalSYMPTOM POSSIBLE CAUSE PROBABLE FIXPoor harvest Too short harvest time Check and adjust harvest time

Page 19

CONDITION DETERMINE CAUSE PROBABLE CORRECTIONIce Machine does not run, it haspower to it, the high pressurecontrol is closed, the on/off switchis set

Page 20

Sonar Sonar is Scotsman's ultrasonic device for measuring ice level and switching the ice machine on and off. It consists of a control board, t

Page 21

Sonar Service Diagnosis Step 1. Determine if it's a bin control problem.– Machine will not switch on  Reset high pressure cut out Jump the two

Page 22

Sonar Service Diagnosis Step 2: If it is a sonar problem, check the board.– 12 volts to board.  If not, check the transformer.– When ice is called f

Page 23

A Serial Number Plateis Located Behind TheFront PanelAIRFLOW ON AIR COOLED MODELSAIR FLOWS IN THE FRONT AND OUT THE BACKNAMEPLATE IS ON THE BACK PANEL

Page 24

Sonar Service Diagnosis Step 3. If the red light is NOT ON– Check the selector switch and harness.  Jump out the two outside pins on the board where

Page 25

Sonar Service Diagnosis Step 4: If the red light is not on, and jumping the two outside pins does not work, check the transducer.– CME1202 or CME1402

Page 26

Sonar Service Diagnosis Transducer Check– “Ticking” sound is normal– Examine the screen and face of the transducer. If the screen is dirty, clean it

Page 27

Sonar Service Diagnosis Transducer Check Switch power on and check the transducer against a hard, flat surface.  Try a NEW transducer, if that does

Page 28 - Sonar Service Diagnosis

Sonar Service DiagnosisCheck Transducer Resistor (green and white wires)- should be about 260-270 ohms.

Page 29

REMOVAL AND REPLACEMENTWater Distributor Tubes And Manifold Tubes To remove the water distributor tube and manifoldtube: 1. Remove the front panel. 2.

Page 30

Water Pump1. Remove front panel.2. Unplug water pump electrical connection.3. Drain water reservoir.4. Use corbin clamp pliers to loosen and slidecorb

Page 31

REFRIGERATION SERVICEGeneral:••Scotsman recommends that any work on therefrigeration system only be done when it iscertain that the system needs repai

Page 32

VAPOR VAPOR TEMP. PRES. TEMP. PRESS.(DEG F) (PSIG) DEG F) (PSIG)-20 17 70 146-18 18 72 150-16 20 74 155-14 21 76 16

Page 33

LIQUID CHARGING Instructions for R-404AIn preparation for charging, the low side hoseshould have a sight glass, and/or a restrictordevice (such as a &

Page 34

UTILITY CONNECTION LOCATIONS: Back ViewsCONDENSER INLET1.0 CM 3/8 IN. FPT8.91 INWATER INLET3/8 IN MALE FLAREWater CooledAir CooledCME1202 & CME14

Page 35

FOR THE INSTALLER: Location & AssemblyWhen alignment and leveling are completed,tighten the bolts to secure the mounting straps.Remove the front p

Page 36

FOR THE INSTALLER: Location & AssemblyStacking InstructionsA stacking kit, KSCMS48, is required tointerconnect the ice level controls, seal thefr

Page 37

FOR THE ELECTRICIAN SEE NAMEPLATE for current requirements todetermine wire size to be used for electricalhookup. The cuber requires a solid chassis

Page 38

FOR THE PLUMBERFOLLOW ALL LOCAL CODES:The recommended water supply line is a 3/8-inchO.D. copper tubing with a minimum operatingpressure of 20 PSIG an

Page 39

FINAL CHECK LIST1. Is the cabinet in a room where ambienttemperatures are within the minimum andmaximum temperatures specified?2. Is there at least si

Related models: CME1402

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