Binder_A-4_-_Manuals.pdf

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.

There are 2 models covered in this manual:

• CME1356R, (5 evaporators)

• CME1656R, (6 evaporators)

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.

TABLE OF CONTENTS

Specifications . . . . . . . . . . . . . . . . . PAGE 2

Condenser and Ice Machine Layouts . . . . . PAGE 3

Pre-Installation . . . . . . . . . . . . . . . . . PAGE 4

Location & Assembly . . . . . . . . . . . . . PAGE 5

Bin Control: Installation . . . . . . . . . . . . PAGE 6

Bin Control . . . . . . . . . . . . . . . . . . . PAGE 7

Stacking . . . . . . . . . . . . . . . . . . . . PAGE 8

For The Installer: Remote Condenser . . . . . PAGE 10

Remote Condenser Location . . . . . . . . . PAGE 11

Coupling Instructions . . . . . . . . . . . . . PAGE 12

Head Pressure Control Add-On Kit . . . . . . PAGE 13

Electrical . . . . . . . . . . . . . . . . . . . . PAGE 14

Plumbing . . . . . . . . . . . . . . . . . . . . PAGE 15

After Utility Connections . . . . . . . . . . . . PAGE 16

Component Location and Function . . . . . . PAGE 17

AutoIQ Controller . . . . . . . . . . . . . . . PAGE 18

Initial Start Up . . . . . . . . . . . . . . . . . PAGE 19

Adjustments . . . . . . . . . . . . . . . . . . PAGE 20

How To Operate The AutoIQ Controller . . . . PAGE 21

How The Electronic Cuber Works . . . . . . . PAGE 22

Technicians Only: Freeze Cycle Sequence . . PAGE 24

Technicians Only: Harvest Cycle Sequence & Other Notes . . . . . . . . . . . . . . . . . . . . . PAGE 25

Sanitation and Cleaning . . . . . . . . . . . PAGE 26

Additional Maintenance . . . . . . . . . . . PAGE 27

Additional Maintenance: Water Distributors . PAGE 28

Additional Maintenance: Inlet Water Valve Screen . . . . . . . . . . . . . . . . . . . . PAGE 29

Additional Maintenance: Ice Sensors, Condenser . . . . . . . . . . . . . . . . . . PAGE 30

Service Diagnosis: Diagnostic Light Analysis PAGE 31

Service Diagnosis . . . . . . . . . . . . . . PAGE 32

Service Diagnosis: Components . . . . . . . PAGE 33

Service Diagnosis . . . . . . . . . . . . . . PAGE 34

PTCR . . . . . . . . . . . . . . . . . . . . . PAGE 35

Operational Characteristics: CME1356R . . . PAGE 36

Operational Characteristics: CME1656R . . . PAGE 37

Removal and Replacement . . . . . . . . . PAGE 38

Removal and Replacement . . . . . . . . . PAGE 39

Removal and Replacement: AutoIQ Controller

. . . . . . . . . . . . . . . . . . . . . . . . PAGE 40

Removal and Replacement: Water Level Sensor

. . . . . . . . . . . . . . . . . . . . . . . . PAGE 41

Removal and Replacement . . . . . . . . . PAGE 42

Refrigerant . . . . . . . . . . . . . . . . . . PAGE 43

Before Calling for Service . . . . . . . . . . PAGE 45

Parts Lists and Wiring Diagrams are in the section at the center of this manual.

CME1356R and CME1656R

May 2000

Specifications

Both of these ice machines are designed to be installed indoors, in a controlled environment.

They can operate satisfactorily under a wide variety of conditions. However, 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.

Operational Limits

Minimum Maximum

Air Temperature 50oF. 100oF.

Water Temperature 40oF. 100oF.

Water Pressure 20 psi 80 psi

Voltage (60 Hz) 197 253

Voltage (50 Hz) 207 253

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 any kind for products manufactured by Scotsman that have been altered in any way, including the use of any parts and/or other components not specifically approved by Scotsman.

Voltage note: The control system transformer in the control box of this ice machine has two primary taps, one for 208 volt power and one for 240 volt power. The machine ships with the power supply connected to the 208 volt tap. Change to the 240 volt tap when the voltage supplied to the unit is greater than 229 volts.

Bins:

All models will fit a standard, 48" wide or wider open top Scotsman Ice Storage Bin. Examples include BH900, BH1100, BH1300, BH1600

In addition, there may be other bins that can be used, check Scotsman’s sales literature for application information.

Note: Slope-front bins must have an internal baffle.

Scotsman’s BH900 has the required baffle. Baffle must be approximately in the position shown in the diagram below.

Model Number Dimensions W x D x H (w/o bin)

Basic Electrical (volts/Hz/phase)

Use Condenser

Refrigerant Charge R-404A

Minimum Circuit Ampacity

Maximum Fuse Size

CME1356RS-32F 48 ½ “ x 24" x 28 208-230/60/1 ECR411-32A 288 oz 24.9 30

CME1356RS-3F same 208-230/60/3 ECR411-32A 288 oz 15.9 20

CME1356RS-6F same 230/50/1 ERC411-32A 288 oz 24.9 30

CME1656RS-32F same 208-230/60/1 ECR411-32A 288 oz 24.9 30

CME1656RS-3F same 208-230/60/3 ECR411-32A 288 oz 15.9 20

CME1656RS-6F same 230/50/1 ECR411-32A 288 oz 24.9 30

* The remote condenser is designed to work in temperatures from -20oF. to 120oF.

Use precharged tubing kits, RTE25 (25’) or RTE40 (40’) or RTE75 (75’). Select the length closest to the needs of the particular installation.

The stacking kit required to place two like model cubers together is: KSCME6-LG-B. The kit required to connect this ice machine to a central condenser is: RCKCME6-GX

BASIC INFORMATION

12.0"

4.

0" Side View

Baffle

CME1356R and CME1656R

November 2004

CME1356R and CME1656R

May 2001

Condenser and Ice Machine Layouts

.88 DIA. ELECTRICAL

INLET

.65 in

1.7 cm

27.56 in

70.0 cm

2.84 in

7.2 cm

AIR FLOW

.562 DIA.

MOUNTING

HOLES (4)

CONDENSER FINS

23.54 in

59.7 cm

LIQUID LINE

3/8" MALE CPLG.

DISCHARGE LINE

1/2" MALE CPLG.

14.56 in

36.9 cm

7.60 in

19.3 cm

29.19 in

74.1 cm

24.71 in

62.7 cm

28.07 in

71.2 cm

29.50 in

74.9 cm

38.47 in

97.7 cm

35.72 in

90.7 cm

2.75

29.15 in

74.0 cm

32.32 in

82.1 cm

11.50 in

29.2 cm

15-0782-01CAN CAUSE INJURY OR DEATH:DISCONNECT ALL REMOTE ELECTRICPOWER SUPPLIES BEFORE SERVICING.RISK OF ELECTRIC SHOCK^MWARNING

17.87 in

45.4 cm

.88 DIA. KNOCKOUT

REMOTE CONDENSER FAN

REMOTE CONDENSER

LIQUID LINE

3/8" MALE CPLG.

REMOTE CONDENSER

DISCHARGE LINE

1/2" MALE CPLG.

WATER INLET

3/8" FLARE

ICE

OPENING

ICE

OPENINGPLAN VIEW

BACK VIEW

6.00 in

15.2 cm

MINIMUM FOR

UTILITY CONNECTIONS

6.00 in

15.2 cm

MINIMUM FOR

AIR VENTILATION

4.20 in

10.7 cm

10.15 in

25.8 cm

3.81 in

9.7 cm

18.75 in

47.6 cm

2.50 in

6.4 cm

.88 DIA. KNOCKOUT

ELECTRICAL INLET

22.65 in

57.5 cm

23.30 in

59.2 cm

DUMP

VALVE

DRAIN

3/4" F.P.T. 18.67 in

47.4 cm

23.87 in

60.6 cm

5.87 in

14.9 cm

2.46 in

6.2 cm

15.77 in

40.1 cm

21.77 in

55.3 cm

26.10 in

66.3 cm

MINIMUM BIN

TOP OPENING

ERC411

Pre-Installation

Other Applications:

Check sales literature for additional information.

Electrical:

Check the nameplate for electrical requirements.

The nameplate is located on the back of the ice machine. If the information on the nameplate is different from other published information, go by the nameplate data.

While the model and serial number are on the nameplate, a serial number plate is located at the front of the machine, behind the left front panel and to the right of the purge valve.

Water:

There is no such thing as pure water. All water contains some impurities. There are two ways water carries the impurities: suspended and dissolved. Suspended solids can be filtered out.

Dissolved solids must be diluted or treated. Water filters are recommended to remove suspended solids. Some filters have treatment in them for suspended solids. Check with a water treatment service for a recommendation.

Cube Ice machines use more water than what ends up in the bin as ice. While most water is used during ice making, a portion is designed to “rinse" out the water system to keep hard water scale from clogging up the machine. That water rinse, combined with water filters, prolongs the times between needed water system cleaning.

Service Technicians: All models covered here come set from the factory with at a “Standard” water rinse. Standard water rinse is designed to be compatible with typical water conditions. The machine may be adjusted to a different water rinse after start up. If the prior ice machine worked acceptably well with the local water conditions, leave the machine at the factory setting. If severe water conditions are present, and water filters do not solve the problem acceptably, adjust the machine to use more water. If water conditions are excellent, adjust the machine to use less water.

See the Adjustments section.

Note: Water use adjustments are customer convenience adjustments; they are NOT factory defects and are NOT covered by warranty.

CME1356R and CME1656R

May 2001

Nameplate

Serial Number Plate

Location & Assembly

Locate the ice machine indoors. A 6 inch minimum clearance on the back and left sides is required for the proper operation and service of this machine.

Locate the remote condenser as close as possible to the ice machine. See page 11 for details.

Unpacking and Assembly:

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. Note: Stacked applications may not use casters.

Return the bin to an upright position. Check the bin top gasket for gaps and tears, fill any in with food grade sealant prior to placing the ice machine on the bin.

Note: If recycling a prior bin, be sure that the bin top gasket is in good condition or seal the ice machine to the bin with food grade sealant.

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.

Remove the front panels and all packaging materials.

After all packing materials have been removed from the ice machine, lift or hoist the machine onto the bin. Align the sides and back of the machine with the sides and back of the bin.

Secure the ice machine to the bin with the two metal straps and 4 bolts provided.

Cabinet Panel Removal:

1. Remove the front panel by removing the two screws connecting the front panel to the machine.

2. Lift up at the front edge and push the top panel back until it releases from the tabs connecting it to the back panel.

3. Remove two screws at the front of each side panel, and pull them forward until they release from the tabs connecting them to the back panel.

Evaporator Cover:

CME1356R and CME1656R

May 2001

To Remove Evaporator Cover:

Push Up and Tilt Out

Bin Control: Installation

The bin control is a thermostat. It must be field installed after the ice machine has been placed on the bin.

Before starting, remove the left front panel and any baffle in the bin.

1. Locate bin thermostat bulb.

2. Route bulb thru routing tube (located between the compressor and the reservoir).

3. Locate bin thermostat bracket.

4. Carefully position the thermostat bulb on the bracket (see the diagram on the next page).

5. Fasten the bracket to the bottom of the ice machine with the two 3-pronged knobs supplied with the unit.

6. Pull back into the ice machine any excess capillary tubing.

7. Return the baffle to the bin and continue with the installation.

Note: If the machine is located at an altitude higher than 2,000 ft., adjust the thermostat by removing the plastic cover and rotating the adjustment screw per the table.

Route Bin Thermostat Bulb Into Bin

Bin Thermostat Bulb

Thermostat Bulb Routing Tube

Bin Thermostat

Body

Thermostat Bulb Routing Tube

Bin Thermostat Altitude Correction Table

CW Turns of Range Screw (under plastic cover)

Feet Turns Feet Turns

2000 55o 8000 340o

4000 160o 9000 385o

6000 250o 10000 405o

Use This Table to Adjust Thermostat

Bin Control

Attach Thermostat Bulb to Bracket

Bin Thermostat Bracket

Attach Bracket to Bottom of Ice Machine

Minimize Excess Tube in Bin

Bin Thermostat Capillary Tube

Thermostat and Bracket

Three-Pronged Knob

Mount Bulb Tip Here

Mount Thermostat Capillary Tube Here

Stacking - Kit KSCME6-LG-B

Only like models may be stacked. Begin after the bottom unit has been placed on the ice storage bin and secured. Stacking requires heavy duty leg kits.

Casters are NOT recommended.

Note: Instructions are for either model.

Bottom Machine:

1. Remove front panel, left side panel, and top panel.

2. Remove & discard top cover from over the freezing compartment.

3. Install gasket materials to freezing compartment:

Cut about 22" of gasket material from the roll in the kit. Apply it to the back side top edge of the freezing compartment.

Cut two lengths of gasket material to fit the right side top edge of the freezing compartment and apply them.

4. Place a bead of food grade sealant to the top of the back wall’s gasket.

5. Place the shield bracket (has a large hole in the center) from the kit over the center of the freezing compartment.

Insert the tabs of the bracket into slots on the back of the unit.

6. Secure bracket at the front with screws from the kit.

7. Hang the plastic shields from the bracket installed in the prior step. Use the slots in the shields to hang them from the stainless steel hooks.

Note: The notch in the bottom of the shield goes to the front.

Note: The tabs on the shields must fit inside the ice outlet port.

8. Check the position of the shields. They must move freely and be vertical.

Note: The suction line may need to be moved slightly so the tubing clears the bracket & shields.

9. Place a bead of food grade sealant onto the top left edge of the freezing compartment.

10. Install the front-to-back support bracket over the left edge of the freezing compartment.

11. Remove two existing screws and secure the bracket to the: freezing compartment, back panel and front channel with the 2 existing screws and 1 large and 4 small screws from the kit.

Both Machines:

12. Place the top ice machine onto the bottom one.

Secure together with hardware from the top machine. Remove left front and left side panels.

13. At the back of the ice machines, on the compressor end, remove the upper knock-out from the bottom machine and the lower knock out from the upper machine.

14. Place a strain relief (from the kit) into each hole.

15. Insert wire harness from kit thru strain-relief and hole in upper corner of the lower ice machine’s back panel.

NOTE: Harness is marked which end goes to which machine.

Bottom Machine:

16. Remove harness from controller terminal 7 and bin thermostat.

17. Route wire harness in lower ice machine to the controller. Connect to terminal #7. Plug the two free wires onto the thermostat terminals #1 and #2.

18. Return left side panel to its original position on the lower ice machine.

Top Machine:

19. Remove harness from controller terminal 7.

20. Route wire harness thru upper unit’s lower knock-out hole and strain relief and continue internally to the controller. Plug wire onto terminal 7 of the controller.

21. Return all panels and covers to their normal positions.

22. Complete the balance of the installation.

Service Notes:

A. The shields must be positioned so they hang vertically and move freely left to right. Their purpose is to guide the ice past the bottom machine’s evaporators and into its cube port.

B. The drain lines from each ice machine must be kept separate.

CME1356R and CME1656R

Front-to-Back Support Bracket

Gasket for Metal Edges of Bottom

Unit

Gasket on Plastic Walls of

Lower Unit

Shield Hanger Bracket

Stacking

Mounting Straps and Hardware

Shield

For The Installer: Remote Condenser

Locate the condenser as near as possible to the interior location of the ice maker.

Note: The location of the condenser relative to the ice machine is LIMITED by the specification on the following page.

Select the best available location, one that protects the condenser from extremes of dust, grease and sun.

Meet all applicable building codes.

Roof Attachment

Install and attach the remote condenser to the roof of the building, using the methods and practices of construction that conform to the local building codes, including having a roofing contractor secure the condenser to the roof.

Note: If using any other condenser besides the ERC411, its use must be approved by Scotsman, and a head pressure control valve must be connected to the condenser coil. The head pressure valve kit number is: RCKCME6

Precharged Line Routing

Do not connect the precharged tubing until all routing and forming of the tubing is complete. See the Coupling Instructions for final connections.

1. Each set of pre-charged tubing lines contains a

8“ diameter liquid line, and a 1 2” diameter discharge line. Both ends of each line have quick connect couplings, the end without access valves goes to the ice maker.

Note: The openings in the building ceiling or wall, listed in the next step, are the minimum sizes recommended for passing the refrigerant lines through.

2. Have the roofing contractor cut a minimum hole for the refrigerant lines of 2“. Check local codes, a separate hole may be required for the electrical power supply to the condenser.

Caution: Do NOT kink the refrigerant tubing while routing it.

3. Route the refrigerant tubes thru the roof opening. Follow straight line routing whenever possible.

Note: Excess tubing may EITHER be coiled up INSIDE the building OR cut out prior to connection to the ice maker and condenser.

If the excess tubing is cut out, after re-brazing the tubing must be evacuated prior to connection to the ice maker or condenser.

If the excess tubing is to be coiled, spiral it horizontally to avoid excess trapping in the lines.

Note: A 36" service loop may be placed behind the ice machine.

5. Have the roofing contractor seal the holes in the roof per local codes.

CME1356R and CME1656R

May 2001

Typical Installation

ERC411 Remote Condenser

Electrical Power Supply

Coil Excess Tubing

Horizontally Within the Building

Remote Condenser Location

Use the following for planning the placement of the condenser relative to the ice machine

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 condenser is 15 physical feet

�Physical line set maximum length is 100 feet.

�Calculated line set length maximum is 150.

Calculation Formula:

�Drop = dd x 6.6 (dd = distance in feet)

�Rise = rd x 1.7 (rd = distance in feet)

�Horizontal Run = hd x 1 (hd = distance in feet)

�Calculation: Drop(s) + Rise(s) + Horizontal Run

= dd+rd+hd = Calculated Line Length

Configurations that do NOT meet these requirements must receive prior written authorization from Scotsman.

Do NOT:

�Route a line set that rises, then falls, then rises.

�Route a line set that falls, then rises, then falls.

Calculation Example 1:

The condenser is to be located 5 feet below the ice machine and then 20 feet away horizontally.

5 feet x 6.6 = 33. 33 + 20 = 53. This location would be acceptable

Calculation Example 2:

The condenser is to be located 35 feet above and then 100 feet away horizontally.

35 x 1.7 = 59.5. 59.5 +100 = 159.5. 159.5 is greater than the 150 maximum and is NOT acceptable.

Operating a machine with an unacceptable configuration will void the refrigeration system warranty.

.8

.1

40.35"dd hd rd

Remote Condenser

Located ABOVE Ice Machine

Remote Condenser Located BELOW Ice

Machine

Condenser Distance & Location

Schematic

Max 35’

Max 15’

Coupling Instructions

The couplings on the ends of the pre-charged line sets are self-sealing when installed properly.

Follow these instructions carefully.

These steps must be performed by an EPA Certified Type II or higher technician.

Initial Connections

1. Remove the protector caps and plugs. Wipe the seats and threaded surfaces with a clean cloth to remove any possible foreign matter.

2. Thoroughly lubricate the threads, o-rings, diaphragms and all internal coupling surfaces with polyolester refrigerant oil.

3. Position the fittings on the correct connections on the condenser and ice machine.

�The 1 2“ discharge line (schrader valve end) goes to the remote condenser fitting marked

“discharge line”.

�The 3 8“ liquid line (schrader valve end) goes to the remote condenser fitting marked “liquid line”.

�The “ discharge line goes to the ice maker fitting marked “discharge line”.

�The “ liquid line goes to the ice maker fitting marked “liquid line”.

Final Connections:

4a. Begin to tighten the couplings together by hand. Continue to turn the swivel nuts by hand until it is certain that the threads are properly engaged.

4b. Using two wrenches, one to rotate the swivel nut and one to hold the tubing in place, tighten each coupling.

It is CRITICAL that ONLY the NUT on the pre-charged tube be turned, or the diaphragms will be torn by the piercing knives and become loose in the refrigeration system causing severe operational problems.

Note: As the coupling is tightened, the diaphragms in the quick connect couplings will begin to be pierced. As that happens, there will be increased resistance to tightening the swivel nut.

4c. Continue tightening the swivel nut until it bottoms out or a very definite increase in resistance is felt (no threads should be showing).

Do NOT overtighten.

5. Use a marker or pen to mark a line on the coupling nut and unit panel. Then tighten the coupling nut an additional one-quarter turn. The line will show the amount that the nut turns.

6. After all connections have been made, and after the liquid line valve has been opened (do not open yet), check the couplings for leaks.

CME1356R and CME1656R

May 2001

Clean and Lubricate Couplings

Tighten Swivel Nut

Rotate Swivel Nut ¼ Turn More

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.

Head Pressure Control Add-On Kit

Kit: RCKCME6GX

Required when a CME1656R or CME1356R is to be connected to a Remote Condenser that is not equipped with a Head Pressure Control Valve

Required Tools: Screwdriver; Drill; 5/32" drill bit;

Two Adjustable Wrenches; POE Oil

1. Remove cover from metal box.

2. Locate correct position on condenser: The RCKCME6GX can fit either a Mac G series or a Mac X series condenser.

3. Use metal box as a template, mark the positions of 4 holes to be drilled to mount the box to the condenser.

4. Drill four .157" (#22 or 5/32" bit) dia. holes.

5. Remove plastic covers from the condenser’s quick connects and those to be used to connect to the condenser.

6. Thoroughly clean and lubricate the threads and diaphragms of both the condenser’s and the kit’s quick connects. Use Polyolester oil.

7. Mount the box to the condenser with the screws from the kit.

8. Start the swivel nuts by hand.

�Use a back up wrench to be certain that the tubing is NOT ROTATING. Only the SWIVEL

NUTS should be rotating!

�Then use an adjustable wrench to tighten them until no threads are seen AND a very definite resistance is felt.

9. Mark the positions of the swivel nuts to the condenser panel.

10. Rotate the swivel nuts additional one-quarter turn.

11. Place cover on metal box & secure with screws.

12. Finish the balance of the installation. Ice machine’s precharged line sets will now connect to the quick connect fittings on the metal box instead of the condenser’s.

G series

RCKCME6GX

Pre-Charged Lines from

Ice Machine

Connections to Central Condenser

Central

X Series

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. Either fuses or HACR type circuit breakers may be used.

The ice maker is designed to operate on its own electrical circuit and must be individually fused.

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.

Note: Central Condensers connected to more than one refrigeration system will likely have a wiring scheme to control the fan motor. Follow those directions for condenser wiring.

Electrical connections are made in the junction box in the back of the cabinet.

1. Remove the junction box cover.

2. Knock out both holes for a field supplied strain relief.

3. Install wires and strain reliefs per code. Note:

Condenser fan motor wires are tagged.

4. Connect to wires and secure ground wire to ground screw inside junction box.

All external wiring should conform to the national, state and local electrical code requirements.

Usually an electrical permit and the services of a licensed electrician will be required.

CME1356R and CME1656R

May 2001

Interconnecting Wire

Remote Condenser Power Connection

Power Supply

Plumbing

May 2001

Ice Machine

Drain

Bin Drain

Floor Drain

Field Supplied

Water Filter

Potable Water

Source

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.

Supply:

All models have 1 water supply connection, a 3 8" male flare at the back of the cabinet. Connect to cold potable water that has adequate pressure.

Note: Using water supply tubing smaller than 3 8" will cause severe operational issues.

Water Filters:

The water filters must flow at least 2.7 GPM or they will cause severe operational issues. Check with the filter manufacturer. When replacing a prior ice machine, do NOT assume that the water flow capacity of the filter will be adequate.

All Drain Tubing Material must be RIGID.

Flexible tubing will eventually cause a restricted drain.

Drain:

All models have 1 gravity drain connection, a 3 4"

FPT fitting at the back of the cabinet. Use only RIGID TUBING. Flexible tubing may be easily kinked or become cracked.

The drain tube must be vented at the back of the cabinet. Use an 18" high vent.

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.

Insulation is recommended for the ice machine reservoir and bin drains.

Follow all applicable codes

Vented Drain

Refrigerant and Electrical Lines to Condenser

Potable Water Inlet

- 3/8" Male

Flare

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.

4. Go thru the final check list (below).

Final Check List:

___ 1. Is the unit located indoors in a controlled environment?

___ 2. Has the correct remote condenser been properly located and mounted?

___ 3. Has the correct electrical power (voltage and phase) been supplied to the machine?

___ 4. Have all the water supply connections been properly made with the correct size tubing?

___ 5. Have all the drain connections been properly made?

___ 6. Has the unit been leveled? Level the unit at the bin.

___ 7. Have all unpacking materials been removed?

___ 8. Is the water pressure adequate?

___ 9. Is the machine secured to the ice storage bin?

___ 10. Is the bin control system been properly installed?

___ 11. Have the drain connections been checked for leaks?

___ 12. Has the bin interior been wiped clean or sanitized?

___ 13. Have any water filter cartridges been replaced?

___ 14. Check all refrigerant lines and conduit lines, for vibration or rubbing and possible failure. Adjust as needed.

___ 15. After 4 hours of electrical power, proceed to Initial Start Up.

CME1356R and CME1656R

Component Location and Function

Reservoir: Contains the water used to make ice.

Water Inlet Valve: Opens to allow water into the reservoir.

Evaporators/Freezing Compartment: Location of the evaporators. Ice forms on the evaporators, and is released when warmed up during the harvest cycle. The freezing compartment is fully insulated for maximum efficiency.

Cube Deflectors: The slots in the inclined deflectors let the water falling from the evaporators back into the reservoir, but when ice falls during harvest, the ice slides off into the bin.

Harvest Bypass Valve: Injects additional refrigerant into the harvest system.

Water Pump: Forces the water from the reservoir to the top of the evaporator(s). The motor is kept separate from the water to minimize contact with moisture.

Hot Gas Valve: Closed during freeze, it opens during harvest to divert hot discharge refrigerant gas into the inlet of the evaporators.

Purge Valve: Opens during the first part of harvest, when the water pump restarts the water in the reservoir is diverted to the drain.

Check Valves: Liquid and Discharge lines contain check valves. These control refrigerant migration during the Harvest and Off cycles.

CME1356R and CME1656R

May 2001

Water Pump

Head Pressure Control Valve

Evaporators

Liquid Check Valve

Filter-Dryer

Receiver

Compressor

Accumulator with Heat Exchange

Purge Valve

Inlet Water Valve

Discharge Check Valve

Harvest Bypass Valve

Hot Gas Valve

Thermostatic Expansion

Valve

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 cycle.

�Clean: On when the unit is in the Clean cycle.

�Off: On when the unit has been switched off, blinks when the machine is preparing to shut off.

�Water: On when the controller has identified a problem with the water system.

�Refrigeration: On when the controller has identified a problem with the refrigeration system.

Cycle Definitions:

�Freeze: The refrigeration system is operating to remove heat from the evaporators. The compressor, remote fan motor and water pump are ON.

�Harvest: The refrigeration and water systems are operating to harvest the ice cubes. While the compressor and fan motors are on for the full cycle, the water pump will be off at the beginning and the inlet water valve will switch off before the end.

�Clean: Water valve opens to fill the reservoir.

The Water pump starts. The Clean indicator light is switched ON. A manually initiated rinse cycle flushes the system.

CME1356R and CME1656R

May 2001

8 9

BIN FULL

FREEZE

HARVEST

CLEAN

OFF

WATER

REFRIGERATION

RESERVOIR WATER

LEVEL SENSOR

ICE SENSOR

ICE SENSOR

RESERVOIR & DISCHARGE

LINE THERMISTORS

LOW VOLTAGE IN/OUT

WATER VALVE

HOT GAS VALVE

PURGE VALVE TIMER

CONTACTOR COIL

STACKING and/or

THERMOSTAT

FUTURE USE

FACTORY USE

PUSH BUTTON

CONTROL SWITCHES

HI VOLTAGE IN/OUT

WATER PUMP

INDICATOR LIGHTS:

DIAGNOSTIC LIGHTS:

Initial Start Up

1. Remove the left front panel.

2. Locate and open the liquid line valve.

3. Double check quick-connect couplings for leaks.

4. Locate the AutoIQ Controller.

5. Connect electrical power. All lights will blink on and off together then, for blue controllers, the two red lights will blink while the Freeze light is on.

After 20 seconds the Freeze light will go out and the Bin Full and Off lights will be on. After a few seconds only the Off light will be glowing.

6. Open the water supply valve.

7. Push and release the Freeze cycle push button (the Freeze indicator light will blink until the compressor starts).

Initial Start (30 seconds)

�The Freeze light will begin to blink.

�The hot gas solenoid valve will be open.

�The purge valve will be open

�The water pump will be on

�After 30 seconds, the hot gas valve closes

�The purge valve will shut and the inlet water valve will open to fill the reservoir. The inlet water valve shuts off when the reservoir is full.

�The compressor & remote fan motor start.

Freeze Cycle

The Freeze indicator light will come on. The unit will be in a Freeze cycle for many minutes. Slush may appear in the reservoir, it is temporary and normal.

�The pump will stop for a few seconds a few minutes into the freeze cycle

�The freeze cycle will continue until the water level in the reservoir drops to its factory set point, the first time that happens the water valve will re-fill the reservoir. The second time it happens in a freeze cycle starts the Harvest

Cycle.

Harvest Cycle:

�The Harvest indicator light will be ON, �The hot gas valve will open.

�The purge valve will be open for 74 seconds.

�The water pump will switch off. The pump will restart part way thru the harvest cycle.

�The purge valve closes.

�The Inlet water valve will open for a short time

�The Bin Full indicator light will go on and off as ice falls from the evaporators.

8. Machines are shipped from the factory with the purge level set to accommodate average water conditions. To achieve optimal machine performance, set the purge level to the minimum setting.

Note: While the amount of water purge is adjustable, only those installations with a water supply known to be excellent (very low TDS) should adjust to the minimum setting. See the next page for purge adjustment procedures.

9. After about 6 minutes (first cycle after any restart) the machine will return to a freeze cycle.

Note: After the first harvest, the controller will adjusts harvest time as needed to release all ice.

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. Inform the user of the required maintenance of the machine.

Operational Notes:

1. The machine will only shut off on Bin Full at the end of the Harvest Cycle after the bin fills. That last harvest cycle will be about 6 minutes long.

2. After switching off on Bin Full, if ice is removed from the bin, the machine will not restart until it has been off for 4 minutes. If the Freeze button is pushed, the machine will restart immediately.

3. If the bin controls sense a bin full signal before any water is used (float stem up), the machine will shut off on bin full.

4. When shutting off, the compressor will run for 30 seconds (everything else will be off) and then switch off.

CME1356R and CME1656R

March 2003

Service Port

Open By Turning Stem Fully Out (Up)

Adjustments

If there was a problem during Initial Start Up:

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. If either condition is found, the water error light will be switched on and the machine will Shut Down.

2. Refrigeration.

A refrigeration error could have been determined by the AutoIQ Controller if the water temperature did not drop during the freeze cycle. The Controller will next check the compressor discharge temperature. If the discharge temperature is too low, the refrigerant error light will be switched on, and the machine will Shut Down.

Note: The machine can be reset and restarted by pushing and releasing the Off push button switch, and then pushing and releasing the freeze push button switch.

Thermostatic Expansion Valve:

The TXV is not adjustable, do not attempt to adjust it.

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.

1. If the machine is on, push and hold the OFF button for more than 3 seconds, then release it.

This switches the machine Off.

2. Push and hold the OFF button for more than 3 seconds (just until all Lights flash on) then release

it. Do not hold it in it too long.

3. Examine the green Lights. They should have all flashed once, then certain ones will have turned on to indicate which purge level the machine is set at.

There are 5 levels of purge available:

�1. Maximum Purge is when All 5 lights are ON.

Use for extreme water conditions. Note: This setting may extend the Harvest cycle and reduce capacity.

�2. Heavy Purge is when these 4 lights are ON:

Freeze, Harvest, Clean, Off. Use for moderate to severe water conditions. This setting may extend the Harvest cycle and reduce capacity.

�3. Standard Purge (factory setting) is when these 3 lights are ON: Harvest, Clean, Off. Use for typical water conditions.

�4. Moderate Purge is when these 2 lights are

ON: Clean, Off. This is for good water conditions.

�5. Minimum Purge is when this light is ON: Off.

For excellent water conditions.

Adjust by pushing and releasing the Freeze button.

Pushing and releasing the Freeze button increases the purge one level up to the maximum, then it goes to the minimum.

4. The machine will automatically restart after 60 seconds of no switch inputs, or restart the machine by pushing in and holding the Off button for more than 3 seconds, then releasing it. The unit will then be Off. From there the machine may be placed in a freeze cycle by pushing and releasing the Freeze button.

CME1356R and CME1656R

May 2001

Typical Ice Level When Unit Shuts Off

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.

Its manual control is thru the use of the Push Button Control Switches

1. Freeze Button. Pushing and releasing this button starts or restarts the machine. The AutoIQ Controller remembers what cycle it was last in and returns to that cycle.

2. Harvest Button: Pushing and releasing this button will cause the machine to go directly to a Harvest Cycle. Can be done from Freeze or Off. The machine will switch Off at the end of the Harvest cycle.

3. Clean Button: Pushing and releasing this button will cause the machine to empty the reservoir, refill and leave only the water pump on for circulation of ice machine cleaner. 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.

4. Off Button: Pushing and releasing this button will switch the machine OFF at the end of the next cycle. If the button is pushed and HELD for more than 3 seconds, the unit will switch off immediately.

To Reset Errors: First push and release the Off button, then push and release the Freeze button.

CME1356R and CME1656R

May 2001

8 9

BIN FULL

FREEZE

HARVEST

CLEAN

OFF

WATER

REFRIGERATION

PUSH BUTTON

CONTROL SWITCHES

INDICATOR LIGHTS:

DIAGNOSTIC LIGHTS:

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. As liquid refrigerant passes thru the Thermostatic Expansion Valve, it enters the top of the evaporators, and ice will form at the top first.

When cubes need to be released (Harvest) the Hot Gas Valve is opened and Hot discharge gas flows directly from the compressor to the evaporator inlets. At the same time, a Harvest Bypass Valve opens for a few seconds to add the refrigerant needed for harvest. After that the Harvest Bypass Valve and the closed Discharge Check Valve keeps the refrigerant in the condenser out of the Hot Gas Circuit.

This warms up the evaporators and the surface of the ice frozen to the evaporator surface melts. Ice then falls into the bin.

The Check Valves also prevent liquid migration during the Off cycle.

CME1356R and CME1656R

May 2001

Receiver

Thermostatic Expansion Valve

Evaporator

Evaporator

Evaporator

Compressor

Remote Condenser

Refrigerant Distributor

Hot Gas Valve

Check Valve

Check Valve

Suction

Discharge Line

Accumulator

Process Port

Head Pressure Control Valve

Harvest Bypass

Valve

Heat Exchange

Refrigeration Schematic

How The Electronic Cuber Works

Water System:

Freeze:

The water pump forces water to the top of the evaporators. The un-frozen water falls thru the cube deflectors and back into the reservoir. As water is turned into ice, the water level in the reservoir falls, and the machine will re-fill the reservoir once during the freeze cycle.

At the point where the cubes are fully formed, the water level sensor indicates to the AutoIQ Controller that it is time to begin the Harvest cycle.

Harvest:

At the beginning of Harvest, the water pump shuts off and the purge valve opens. The purge valve remains open for 74 seconds. No water will drain until the water pump restarts. The water pump will start at a variable time depending upon the amount of water rinse that has been set.

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.

The inlet water valve will “top off” the reservoir at the beginning of the next freeze cycle.

The AutoIQ Controller operates the ice machine by monitoring several input measures and switching various loads on and off.

Controller Inputs:

1. Reservoir water temperature. This is measured by a thermistor located in the water pump outlet.

2. Discharge line temperature. This is measured by a thermistor located on the compressor discharge line.

3. Water level. This is measured by an infrared sensor and float. The float rises and falls with the water level, and switches the sensor on and off as it moves.

4. Bin fill level. This is measured by a set of electric eyes in the cube outlet port. If ice fills the bin, it will block the “eyes".

Some units are equipped with a bin thermostat, those units use the thermostat to switch the machine on and off. The electric eyes in the cube outlet port will also control the machine if the bin thermostat sticks in an ON position.

5. Time. The controller measures and compares how long it takes for various events to happen. It stores that data for future reference.

Controller Outputs:

A. 24 volt:

�1. Lights

�2. Inlet water valve

�3. Hot Gas Valve

�4. Contactor Coil

�5. Harvest Bypass Valve Coil

B. High Voltage

�1. Water Pump

�2. Purge Valve

CME1356R and CME1656R

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

AutoIQ Controller Operation, Beginning freeze:

1. Switches on Freeze indicator light and shuts off the hot gas valve.

2. Opens the water valve to top off the reservoir.

The controller checks that water fills the reservoir, if it does not fill up within 250 seconds, the controller shuts the machine down. It will automatically try to restart in 20 minutes.

3. Measures and stores the discharge temperature.

4. If the discharge temperature exceeds the design maximum, shuts the machine down on a Refrigeration Error.

5. Checks for a “bin full" signal throughout the cycle.

6. Measures the reservoir water temperature. If the machine is operating correctly, the reservoir water temperature will fall at a standard rate. The AutoIQ Controller will be checking to see if the water temperature fall matches that rate.

If not, it re-checks the discharge line temperature.

If too low, it Shuts Down on a Refrigeration Error. If the discharge temperature is acceptable, the water system is checked by shutting off the water pump and determining if the water level goes up enough.

If it does not, the inlet water valve will open again to fill it. If, after restarting, the water level does not drop, it is assumed that there is a water pump problem and the machine Shuts Down on a Water Error.

If the water level does “measure up" the water pump is restarted and the AutoIQ Controller then measures how long it takes to lower the water level. If the water level does not fall, the machine Shuts Down on a Water Error.

7. Once per freeze cycle the machine will shut off the water pump. It only does this when the water temperature reaches a preset minimum. The pump will only be off for a few seconds.

8. As the machine makes ice, the water level in the reservoir will ultimately fall to the Harvest Level.

The first time that happens per freeze cycle the inlet water valve is re-opened and the reservoir is refilled. The next time it happens, the unit will go into a harvest cycle.

Note: If the freeze cycle exceeds the preset Maximum (36 minutes), the Controller will Shut Down the machine and switch on the Refrigeration Light.

9. The end of Freeze cycle will see the machine in this state:

�Water level = below harvest position

�Water inlet valve will be off

�Water pump will be ON

�Compressor will be ON

�Hot gas valve will be off

At this point Harvest begins and the AutoIQ Controller switches the Harvest indicator light ON.

Restarts:

If the machine is restarting after it has shut off because the bin was full, the first freeze cycle sequence is like this:

1. Purge valve is open.

2. Pump starts.

3. Purge valve closes.

4. Water valve opens to fill the reservoir.

5. Compressor starts.

Note: If there is a power interruption, after power is restored the machine will restart, go thru a brief Freeze cycle and go thru a 6 minute Harvest cycle.

Error Restarts:

The machine automatically attempts to restart 50 minutes after a shut down. If another problem occurs in the next cycle, the machine will attempt one more restart. If another problem occurs in the next cycle, the machine will shut off and must be manually reset.

CME1356R and CME1656R

Technicians Only: Harvest Cycle Sequence & Other Notes

Harvest

The Purge Valve will be open for 74 seconds.

The water pump shuts off, it will restart before 74 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.

The inlet water valve will stay on for about 30 seconds to add enough water to assist with harvest.

The Hot Gas Valve will be open for the entire length of the Harvest Cycle.

The Harvest Bypass Valve will be open for a few seconds at the beginning of the Harvest Cycle.

During the Harvest Cycle, ice will be falling from the evaporators and between the ice sensor’s electric eyes. The AutoIQ Controller monitors the ice falling and uses that information to determine the next harvest cycle length.

The first Harvest after a restart will take about 6 minutes to establish a base line, then the time it took to release that ice is used to determine the next harvest cycle’s length.

The maximum harvest time is 14 minutes.

If no cubes fall (or are sensed) by the end of the Maximum Harvest Time, the machine senses a Refrigeration error. If the next cycle also produces a Refrigeration error, the machine will shut down.

Note: The last Harvest cycle before shutting off on Bin Full will be about 6 minutes long.

Note: The machine will not restart for 4 minutes after switching off on Bin Full, unless the Freeze button is pressed.

Bin Full: The controller will switch on the compressor for 30 seconds after 12 hours of off time to keep refrigerant out of the compressor oil.

Continuous Run Time

A unit that operates 24 hours a day 7 days a week is too small for the user’s needs. To maintain harvest integrity, the controller will extend the harvest time to 6 minutes every 15th consecutive harvest cycle.

Bin Thermostat (for those units so equipped):

In normal ambients the thermostat will react to ice on the bulb in a few seconds. Reaction after removal will take about a minute under normal conditions, and longer in colder rooms.

Stacked Units:

If the bottom unit is in harvest and receives a signal from the top unit that it is also in Harvest, the bottom unit will stay in harvest for about 6 minutes.

If the bottom unit is shut off, but its controller still has power, the top unit may continue to operate. If the bottom unit’s power is shut off, the top unit will shut down on bin full at the end of the next cycle. If the top unit’s power is shut off, it does not impact the bottom unit.

An error shut down on one unit does not affect the other.

Either one may be switched off at the controller without impacting the other.

Diagnostic Light Code Table

If a Diagnostic Light

Water Light Refrigeration Light

Blinks once and repeats

Water pump will not start

Very long ice harvest

Blinks twice and repeats

Lack of water fill

No harvest of ice

Blinks three times and repeats not used High Discharge Temperature

Is ON all the time

Water valve leaking thru rapidly

Check for low discharge temperature or long freeze cycle

Both ON all the time

Check for thermistor set unplugged or failed

CME1356R and CME1656R

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.

Sanitize the ice storage bin as frequently as local health codes require, and every time the ice machine is cleaned and sanitized.

The ice machine’s water system should be cleaned and sanitized a minimum of twice per year.

In Place Cleaning of the Ice Machine Water System:

1. Remove all ice from the bin.

2. Remove the front panels.

3. Push and release the Harvest button (this releases any ice that may be on the evaporators and warms them up).

4. Wait for the machine to finish the Harvest cycle (the machine will stop).

5. Remove the the insulated plastic evaporator cover, the two inner splash panels (part number 02-3680-01 and the one above it), both cube deflectors, and the ice sensors. Place the splash panels and the cube deflectors in a separate container. Place the ice sensors in the reservoir, but be sure that the ends of the connecting wires are not in the water.

6. Push and release the Clean button. The Clean indicator light will be blinking, and the pump will restart.

7. Pour 24 ounces of Scotsman Ice Machine Cleaner into the reservoir water.