Product manual

ManualsBrandsScotsman ManualsIce MakerCME456

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.

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.

CME306 & CME456

January 2000

Page 1

TABLE OF CONTENTS

Specifications ·············PAGE2

Air Cooled Layout ···········PAGE3

Water Cooled Layout ·········PAGE4

Pre-Installation ·············PAGE5

Location ················PAGE6

OnaBin················PAGE7

On a Beverage Dispenser ·······PAGE8

On a Motel Dispenser ·········PAGE9

Cabinet Panel Removal: ········PAGE10

Bin Thermostat: Optional Installation · PAGE 11

Plumbing - Air Cooled ·········PAGE12

Plumbing - Water Cooled ·······PAGE13

Electrical ················PAGE14

After Utility Connections ········PAGE15

Component Description and Function · PAGE 16

AutoIQ Controller ···········PAGE17

How To Operate The AutoIQ Controller PAGE 18

Initial Start Up ·············PAGE19

Adjustments ··············PAGE20

How This Machine Works ·······PAGE21

How This Machine Works ·······PAGE22

Technicians Only: Freeze Cycle Operational

Sequence ···············PAGE23

Technicians Only: Harvest Cycle Operational

Sequence ···············PAGE24

Sanitation and Cleaning ········PAGE25

Additional Maintenance ········PAGE26

Additional Maintenance: Ice Sensors · PAGE 27

Additional Maintenance: Air Filter Replacement

·····················PAGE29

Additional Maintenance: Condenser · · PAGE 30

Service Diagnosis: Controller Diagnostic Light

Analysis ················PAGE31

Service Diagnosis ···········PAGE32

Service Diagnosis: Components····PAGE33

Service Diagnosis: PTCR ·······PAGE34

Operational Characteristics: CME306 · PAGE 35

Operational Characteristics: CME456 · PAGE 36

Removal and Replacement: Water Level Sensor

·····················PAGE37

Removal and Replacement: Fan Blade and/or Fan

Motor··················PAGE38

Refrigeration ··············PAGE39

Before Calling for Service ·······PAGE40

Parts Lists and Wiring Diagrams are Located in the Center of this Manual

™

CM Cubed™ Cuber Performance Raised

to a Higher Power.™

Summary of content (40 pages)

PAGE 1
CME306 & CME456 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.
PAGE 2
CME306 & CME456 Specifications This ice machine is designed to be installed indoors, in a controlled environment. It will operate satisfactorily under a wide variety of conditions. Do NOT operate the machine in temperatures it has not been designed for. Do NOT operate the machine above or below the voltage limits for the particular model. Do NOT operate the machine with too little or too much water pressure. Note: The ice machine will hang over the back of the Lancer dispensers shown in the following list.
PAGE 3
CME306 & CME456 Air Cooled Layout Bin Stat Bracket Mounting Holes 11.38 in 28.9 cm 1.25 in 3.2 cm Bin Stat Thru Hole 1.75 in 4.4 cm 2.63 in 6.7 cm 8.75 in 22.2 cm 12.88 in 32.7 cm 4.00 in 10.2 cm 16.7 in 42.4 cm 3.75 in 9.5 cm Plan View 22.00 in 55.9 cm Ice Opening AIR COOLED CONDENSER BACK VIEW .88 DIA. HOLE ELECTRICAL INLET WATER INLET 3/8" FLARE 4.24 in 10.8 cm 3.72 in 9.5 cm SUMP DRAIN 3/4" F.P.T. 3.16 in 8.0 cm 6.40 in 16.3 cm 9.15 in 23.2 cm January 2000 Page 3 6.22 in 15.
PAGE 4
CME306 & CME456 Water Cooled Layout Bin Stat Bracket Mounting Holes 11.38 in 28.9 cm 1.25 in 3.2 cm Bin Stat Thru Hole 1.75 in 4.4 cm 2.63 in 6.7 cm 8.75 in 22.2 cm 12.88 in 32.7 cm 4.00 in 10.2 cm 16.7 in 42.4 cm 3.75 in 9.5 cm Plan View 22.00 in 55.9 cm Ice Opening CONDENSER INLET 3/8" F.P.T. .88 DIA. HOLE ELECTRICAL INLET WATER INLET 3/8" FLARE CONDENSER DRAIN 1/2" F.P.T. BACK VIEW 19.99 in 50.8 cm 17.17 in 43.6 cm 7.39 in 18.8 cm 24.02 in 61.0 cm 4.54 in 11.5 cm SUMP DRAIN 3/4" F.P.T.
PAGE 5
CME306 & CME456 Pre-Installation Other Applications: Check Scotsman sales information for recommendations regarding applications. Do not place Air Cooled models where the noise from the fan(s) will be objectionable. Check the nameplate for electrical requirements. The nameplate is located on the back of the ice machine. While the model and serial number are on the nameplate, a serial number plate is located at the front of the machine, near the controller. Water: There is no such thing as pure water.
PAGE 6
CME306 & CME456 Location Air cooled models take room temperature air in from the left side and discharge warm air out the back. Do not place them where the heat and noise will be objectionable. Remove Air Baffle from its Shipping Position. Use baffle for In-The-Corner Applications A 6 inch MINIMUM clearance between the back and a wall and between the left side and a wall or another product is required for the basic operation and service of the air cooled model.
PAGE 7
CME306 & CME456 On a Bin Unpacking and Assembly: Application Notes: Begin with unpacking the ice storage bin. Remove the carton, and using part of the carton as a cushion, tip the bin on its back to remove the skid and attach the legs or casters. No thermostat is required for any of the following bins. Level the top edge of the bin front to back and left to right. HTB555: Use KBT27 BH375: Direct fit.
PAGE 8
CME306 & CME456 On a Beverage Dispenser The CME306 or CME456 will mount on top of many brands of ice and beverage dispensers. The brands include Scotsman, Cornelius and Lancer. A bracket and filler plate kit (KLD22-30) is required to connect and secure the CME306 or CME456 to the Lancer 30” wide ice or ice and beverage dispenser. It includes a thermostat and bracket. Scotsman and Cornelius use the same adapter kits.
PAGE 9
CME306 & CME456 On a Motel Dispenser Either the CME306 or the CME456 may be placed on a Motel Dispenser. No thermostat is required when used on either the SLD150 or the HD150, or HD156 or HD22. Scotsman model SLD150 may be used, but the back portion of the top must be removed and replaced with the KDT22 kit. The Scotsman HD22 is a direct fit.
PAGE 10
CME306 & CME456 Cabinet Panel Removal: Note: The top panel holds the upper edges of the side panels in place. 1. Remove the front panel by removing the two screws connecting the top edge of the front panel to the machine, then pull out at the bottom. 2. Lift up at the front edge and push the top panel back until it releases from the tabs connecting it to the side panels. 3.
PAGE 11
CME306 & CME456 Bin Thermostat: Optional Installation The normal bin control is the ice sensor set. An 4. Carefully position the thermostat bulb on the option, required in some cases, is a thermostat. Its bracket. bulb must be deployed after the ice machine has been placed on the bin or dispenser. Note: Some configurations may have parts that vary from these instructions. Follow the instructions for the particular configuration. Before starting, remove the left side panel and any baffle in the bin. 1.
PAGE 12
CME306 & CME456 Plumbing - Air Cooled All models require an adequate potable water supply and a gravity drain. The recommendations for tubing are: • Water supply to be 3 8" OD. • Drain to be 3 4" OD. All Drain Tubing Material must be RIGID. Flexible tubing will eventually cause a restricted drain. Drain: Note: When replacing a prior ice machine, do not take a short cut and reuse the old inlet and drain system. INSTALL A NEW SYSTEM.
PAGE 13
CME306 & CME456 Plumbing - Water Cooled All models require an adequate potable water supply and a gravity drain. The recommendations for tubing are: • Water supply to be 3 8" OD. • Drain to be 3 4" OD. Note: When replacing a prior ice machine, do not take a short cut and reuse the old inlet and drain system. INSTALL A NEW SYSTEM.
PAGE 14
CME306 & CME456 Electrical All models must be installed with the correct wire Follow all Local, State and National codes. size and type per the National Electric Code. Locate the nameplate on the back of the cabinet Water Cooled and find the numbers for Voltage, Phase, Minimum Connections Circuit Ampacity and Maximum Fuse Size. Either fuses or HACR type circuit breakers may be used. Electrical connections are made in the junction box in the back of the cabinet. 1. Remove the junction box cover. 2.
PAGE 15
CME306 & CME456 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. 3. Locate the ice scoop (if supplied) and have it available for use when needed. Final Check List: ____1. Is the unit located indoors in a controlled environment? ____2. Is the unit located where it can receive adequate cooling air? ____3.
PAGE 16
CME306 & CME456 Component Description and Function Reservoir: Contains the water for ice making. Water Inlet Valve: Opens to allow water into the reservoir. Located on the back panel. Cube Deflector: The slots in the inclined deflector allows the water falling from the evaporators back into the reservoir, but when ice falls during harvest, the ice slides off the deflector into the bin. Water Level Sensor: Controls the size of the ice cube by measuring how much water is used in a cycle.
PAGE 17
CME306 & CME456 AutoIQ Controller Indicator Lights: Cycle Definitions: • 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 mode is pending. Harvest: On when the unit is in the Harvest cycle. Clean: On when the unit is in the Clean cycle, blinks when preparing for a clean mode. Off: On when the unit has been switched off, blinks when the machine is preparing to shut off.
PAGE 18
CME306 & CME456 How To Operate The AutoIQ Controller The AutoIQ Controller is a microprocessor based device that receives input from several sources and switches various components on and off. To Reset Machine (machine off, error light on): First push and release the Off button, then push and release the Freeze button. Its manual control is thru the use of the Push Button Control Switches Diagnostic Light Recall 8 To recall the last error on the blue housing CM3 controller: 1.
PAGE 19
CME306 & CME456 Initial Start Up • The Bin Full indicator light will go on and off 1. Remove the front panel. as ice falls from the evaporators. 2. Locate the AutoIQ Controller. 3. Switch on the electrical power. Note that the controller’s indicator lights all flashed on briefly, then the two red lights flashed on and off while the Freeze and Harvest (for CME306) or Freeze, Harvest and Clean (for CME456) lights are on.
PAGE 20
CME306 & CME456 Adjustments If there was a problem during Initial Start Up: Thermostatic Expansion Valve: If an error light came on, check the following. The TXV is not adjustable, do not attempt to adjust it. 1. Water error. How to Adjust the Amount of Water Purge 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.
PAGE 21
CME306 & CME456 How This Machine Works During the Harvest cycle, water again enters the water reservoir, and a purge valve opens to drain the reservoir and dilute the concentration of accumulated minerals. The purge valve is opened The AutoIQ Controller operates the ice machine by for a fixed amount of time, but the water pump monitoring several input measures and switching does not start right away, but at a time determined various loads on and off. by the AutoIQ Controller’s purge setting.
PAGE 22
CME306 & CME456 How This Machine Works 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. As liquid refrigerant passes thru the Thermostatic Expansion Valve, it enters the bottom of the evaporators, and ice will form at the bottom first.
PAGE 23
CME306 & CME456 Technicians Only: Freeze Cycle Operational Sequence Assuming the machine has been operational, the Freeze cycle begins with the end of Harvest: • • • • • restarts, the inlet water valve opens to refill the reservoir. 8. As the machine makes ice, the water level in the reservoir will ultimately fall to the Harvest Level .
PAGE 24
CME306 & CME456 Technicians Only: Harvest Cycle Operational Sequence Harvest Diagnostic Lights and Manual Resets The (air cooled model) fan(s) is(are) off. The controller will shut the machine off if a malfunction is sensed. The Controller will restart The purge valve opens, and will remain open for the machine 2 times, with a 50 minute interval 40 seconds. between restarts.
PAGE 25
CME306 & CME456 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 26
CME306 & CME456 Additional Maintenance To drain reservoir completely (if desired): 1. Remove front panel. 2. Push and hold the Off button. 3. Push and hold the Clean button for 3 seconds to activate the purge valve. 6. Examine the top of the evaporators. The Water Distribution Channels must be free from mineral build up. If build up is evident, scrub the channels with Scotsman Ice Machine Cleaner and a plastic bristle brush. To Sanitize the Ice Storage Bin 1. Remove all ice. 2. Remove baffle. 3.
PAGE 27
CME306 & CME456 Additional Maintenance: Ice Sensors The ice sensors use a system of infrared emitting and receiving components to sense ice. They are located at the bottom of the ice outlet port. They must be free of mineral build up to function properly. To check: 1. Remove front panel. 2. Push and release the off button. 5a. If there is room above the unit, remove the top panel and reach down from above to remove the back sensor. 5b.
PAGE 28
CME306 & CME456 Additional Maintenance: Water Level Sensor Water Level Sensor: Clean the lenses inside the water level sensor. 1. Remove front panel. 2. Push and hold the Off button until the ice machine stops. Float Stem Dust Cover Water Level Sensor Lenses 3. Unplug the wire harness from the sensor. 4. Remove the reservoir cover. 5. Lift up on cover and pull float from float stem. 6. Unsnap sensor from cover. Remove the sensor from its installed position. 7. Remove dust cover. 8.
PAGE 29
CME306 & CME456 Additional Maintenance: Air Filter Replacement Air Filter Cleaning / Replacement - Do Monthly 1. Remove the front panel. To Check the Inlet Water Valve Screen. 1. Disconnect the electrical power. 2. Shut off the water supply. 2. Remove the top panel. 3. Disconnect the water supply from the ice machine. 3. Remove the left side panel. Remove the filter from the side panel. Wash it with 4. Unscrew the water fitting at the back of the ice cold water to remove all embedded dust.
PAGE 30
CME306 & CME456 Additional Maintenance: Condenser To Clean the Air Cooled Condenser 1. Remove the front panel. 2. Push and release the Off button. 3. Remove the top panel. 4. Remove the left side panel. 5. Check the fan blade(s) and condenser for grease or dust build up. Because air flow is from the inside of the cabinet out, the inside of the condenser fins will have the most build up. Fan Motor Harness A. Place the inlet hose of a vacuum cleaner in the condenser shroud. B.
PAGE 31
CME306 & CME456 Service Diagnosis: Controller Diagnostic Light Analysis Problem or Symptom Possible Cause Probable Correction Machine is off Bin is full, ice in cube port Use some ice Bin full light on, no ice in cube port Check optional thermostat, check for scale on ice sensor lens Power is off, check lights. If all lights are out, check power supply, restore power if off Optional bin thermostat is closed Check thermostat for ice on the bulb. If none, check adjustment.
PAGE 32
CME306 & CME456 Service Diagnosis Problem or Symptom Possible Cause Probable Correction 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. Check ice sensors. The bin full light should be off. If it is on or blinking the bin controls may be dirty. Clean if dirty. The board and bin controls may also need to be checked. Push and release Off button. Push and release Freeze button. Check machine operation.
PAGE 33
CME306 & CME456 Service Diagnosis: Components Problem or Symptom Possible Cause Probable Correction Fan motor does not turn. Refrigeration light may be on steadily or blinks 3 times and repeats. Open motor windings, or seized bearings Replace fan motor No power to fan motor Fan motor unplugged, check for voltage from controller. If none, replace controller. Pump motor does not turn Open motor windings, or seized bearings Replace pump No power to pump Check electrical connections.
PAGE 34
CME306 & CME456 Service Diagnosis: PTCR The CME306 and CME456 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. • A wire connects the other terminal of the PTCR to the compressor’s Start winding. • Another wire connects the run capacitor to the start winding. • A parallel circuit connects power from the contactor to the Run winding of the compressor. Diagnosis: 1.
PAGE 35
CME306 & CME456 Operational Characteristics: CME306 Cycle Times (minutes): Air Cooled 70oF. indoor air, 50oF. water 90oF. indoor air, 70oF. water Freeze 11 - 12 minutes 14 - 15 minutes Harvest 1 ¼ - 1 ½ minutes 1 minutes Water Cooled 70oF. indoor air, 50oF. water 90oF. indoor air, 70oF. water Freeze 11 - 12 minutes 12 - 13 minutes Harvest 1 ½ minutes 1 ¼ minutes Air Cooled 70oF. indoor air, 50oF. water 90oF. indoor air, 70oF.
PAGE 36
CME306 & CME456 Operational Characteristics: CME456 Cycle Times (minutes): Air Cooled 70oF. indoor air, 50oF. water 90oF. indoor air, 70oF. water Freeze 18 - 19 minutes 23 - 24 minutes Harvest 1 ¾ minutes 1 ½ minutes Water Cooled 70oF. indoor air, 50oF. water 90oF. indoor air, 70oF. water Freeze 15 - 16 minutes 17 - 18 minutes Harvest 3 ¼ minutes 2 minutes Air Cooled 70oF. indoor air, 50oF. water 90oF. indoor air, 70oF.
PAGE 37
CME306 & CME456 Removal and Replacement: Water Level Sensor 1. Remove front panel. Water Temperature Sensor 2. Push and hold the OFF button. Release it when the machine stops. Note: This sensor is replaced as a set with the Discharge Temperature Sensor. 3. Unplug the wires from the sensor. 1. Remove front panel. 4. Remove one screw holding sump cover to sump. 2. Push and release Off button. 5. Unwind wires from sump cover. 6. Lift the cover enough to remove the float from the stem. 7.
PAGE 38
CME306 & CME456 Removal and Replacement: Fan Blade and/or Fan Motor 1. Disconnect electrical power. Electrical Shock Hazard Disconnect Electrical Power Before Servicing Fan Motor Harness 2. Remove front, top and left side panels. 3. Remove the fan and motor shroud assembly. A. Remove the 6 sheet metal screws holding the assembly to the condenser. B. Unplug the fan motor(s) from the wire harness. C. Lower and tilt the assembly until it clears the refrigerant lines. D. Lift it out of the machine. 4.
PAGE 39
CME306 & CME456 Refrigeration To use the access valves: 3. Close the low side service access valve. 1. Be sure that the valve is closed. Remove the stem cap and insert a 3/16" allen wrench. Check that the valve is closed. 4. Open the discharge side manifold valve and weigh in the name plate charge. After the charge is weighed in, wait a moment & re-check the scale. 2. Remove the port cap and attach refrigerant manifold hoses. 5.
PAGE 40
CME306 & CME456 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. 3. Has someone shut the water off to a water cooled unit?. If yes, the ice machine may need to be manually reset. 4.