Scotsman CME506R, CME656R Service Manual

Introduction:

CME506R, 656R, 806R: AutoIQ Cubers

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 3 models covered in this manual:

CME506R, a 115 volt, dual evaporator

•

machine CME656R and CME806R, 230 volt, dual

•

evaporator machines

Table Of Contents

Specifications: ............ page 2

Pre-Installation ............ page 3

Location: .............. page 4

Stacking: .............. page 5

Remote Condenser Location ....... page 6

For The Installer: Remote Condenser . . . page 7

Coupling Instructions .......... page 8

Electrical: .............. page 9

Electrical Connections: KCMR230 Fan Relay Kit

(CME656R & CME806R only) ...... page 10

Be certain that the information applies to the model in question. If no model is listed, the information applies to all models, including A and D series.

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.

Additional Maintenance ......... page 23

Additional Maintenance: Water Distributors . page 24

Additional Maintenance: Inlet Water Valve Screen

..................page 25

Additional Maintenance: Bin Controls, Condenser

..................page 26

Service Diagnosis: Controller Diagnostic Light Analysis

.................. page 27

Service Diagnosis ........... page 28

Service Diagnosis: Components ..... page 29

Service Diagnosis ........... page 30

Plumbing: .............. page 11

After Utility Connections: ........ page 12

Component Location and Function: .... page 13

AutoIQ Controller: ........... page 14

Initial Start Up: ............ page 15

Adjustments: ............. page 16

Adjustments: ............. page 17

How To Operate The AutoIQ Controller . . page 18

How The Electronic Cuber Works ..... page 19

Technicians Only: Freeze Cycle Operational Sequence

..................page 20

Technicians Only: Harvest Cycle Operational Sequence

.................. page 21

Sanitation and Cleaning ........ page 22

PTCR Diagnosis ........... page 31

Operational Characteristics: CME506R . . . page 32

Operational Characteristics: CME656R . . . page 33

Operational Characteristics: CME806R . . . page 34

Removal and Replacement ....... page 35

Removal and Replacement ....... page 36

Removal and Replacement: AutoIQ Controller page 37

Removal and Replacement: Water Level Sensor

..................page 38

Removal and Replacement: ....... page 39

Access Valves: ............ page 40

Before Calling for Service ........ page 41

January 2000

Page 1

CME506R, 656R, 806R: AutoIQ Cubers

Specifications:

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 where it has not been designed for. 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.

CME506R Operational Limits

Minimum Maximum

Air Temperature 50oF. 100oF.

Water Temperature 40oF. 100oF.

Water Pressure 20 psi 80 psi

Voltage (60 Hz) 103 126

Voltage (50 Hz) 207 253

CME656R and CME806R Operational Limits

Minimum Maximum

Air Temperature* 50oF. 100oF.

Water Temperature 40oF. 100oF.

Water Pressure 20 psi 80 psi

Voltage (60 Hz) 198 253

Voltage (50 Hz) 207 253

All models will fit a standard, 30" wide Scotsman Ice Storage Bin. Some examples are:

BH550

•

HTB555

•

HTB350

•

HTB500

•

HTB250

•

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

Note: All of these models fill the bin very full, and only shut off when ice has filled the bin to the base of the ice machine.

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.

BASIC INFORMATION

Dimensions

Model Number

CME506RS-1E 30" x 24" x 27 115/60/1 ERC101-1A n/a 20 20

CME506RS-6E same 230/50/1 ERC151-32A ERC302-32A

CME656RS-32E same 208-230/60/1 ERC201-32A ERC402-32A 16.9 20

CME656RS-6E same 230/50/1 ERC201-32A ERC402-32A

CME656RS-3E same 208-230/60/3 ERC201-32A ERC402-32A 5.9 15

CME806RS-32E same 208-230/60/1 ERC201-32A ERC402-32A 20.0 30

CME806RS-6E same 230/50/1 ERC201-32A ERC402-32A 20.0 30

WxDxH (w/o bin)

Basic Electrical (volts/Hz/phase)

For Single Pass Condenser, use

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

Refrigerant charge for CME506R is 224 ounces; CME656R or CME806R use 232 ounces when connected to ERC201, and 280 ounces when connected to ERC402. All R-404A.

Use precharged tubing kits, RTE25 (25’) or RTE40 (40’).

A stacking kit to place two like cubers together is: KSCME6-30.

For Dual Pass Condenser, use

Minimum Circuit Ampacity

Maximum Fuse Size

March 2002

Page 2

CME506R, 656R, 806R: AutoIQ Cubers

Pre-Installation

Other Applications:

The Electronic Cubers may be placed on certain Ice Dispensers, including Scotsman models: HD356, RS220 and IS220.

Check with other dispenser manufacturers for recommendations regarding application.

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, below the metal control box.

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.

Nameplate

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.

Note: All Scotsman CM3models, like those

described in this manual, feature Scotsman’s AutoIQ™ control system and ReliaClean™ water system cleaning process.

Service Technicians: All models covered here come set from the factory with at a “Standard” water rinse. Standard water rinse is designed to be comparable 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.

January 2000

Page 3

CME506R, 656R, 806R: AutoIQ Cubers

Location:

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

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

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

Meet all applicable building codes.

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.

If the ice machine has not been unpacked, do so now. Remove the carton from the skid. Lift the ice machine off the skid directly onto the bin.

Cabinet Panel Removal:

Note: The top panel holds the upper edges of the side panels in place.

1. Front Panel, “A” series: Remove the front panel by removing the four screws connecting the front panel to the left and right sides.

Remove

Second

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

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.

Remove

First

Panel Removal

Front Panel “C and D” Series: Remove top two screws and pull the bottom of the panel away from the machine to unsnap it from the machine.

2. Lift up at the front edge and pull the top panel forward 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.

January 2000

Page 4

CME506R, 656R, 806R: AutoIQ Cubers

Stacking:

Models CME256, CME506, CME656 and CME806 may be stacked together in any combination. Use kit number KSCME6-30.

1. Remove the front, left side and top panels from the bottom machine. Discard the top panel.

2. Remove the front and left side panels from the top machine.

3. Place the upper machine onto the lower machine. Check that the tabs on the top of the freezing compartment in the lower machine engage the slot in the base of the upper machine (around the cube port).

4. Fasten the upper cabinet to the lower cabinet with the hardware (two metal straps and four bolts) provided with the machine.

5. Knock out 1 hole in the upper left (viewed from the front) corner of the lower unit’s back panel. Knock out the hole in the lower left (viewed from the front) corner of the upper unit’s back panel.

Mounting

Stacking Kit Wire

Harness

Strap

Strain Relief

6. Position the strain reliefs over the wrapped portion of the stacking kit wire harness.

Route the Stacking Kit Wire Harness from the back to the top and bottom machines thru the holes made in step 5. The harness

is marked which end goes to which machine. Push the strain reliefs into place

from the back of the machines.

Follow local electrical codes for 24 volt wire.

In the lower unit, route the wire behind the suction line and thru the snap bushing just below the AutoIQ Controller. Tape any excess wire to the insulated suction line.

In the upper unit, route the harness thru the snap bushing just below the Controller.

Plug one end into each Controller connection number 7.

7. Place insulation pad from the kit over the reservoir drain tubing in the upper machine. Make certain that the insulation is in contact with the tubing.

Mounting

Strap

Stacking Two Ice Machines Together

8. Return all panels to their normal places.

January 2000

Page 5

CME506R, 656R, 806R: AutoIQ Cubers

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.

22.87"

17.15"

Max 35’

Max 15’

Remote

Condenser

Located ABOVE

Ice Machine

Remote

Condenser

Located BELOW

Ice Machine

40.35"

Condenser Distance &

Location Schematic

January 2000

Page 6

CME506R, 656R, 806R: AutoIQ Cubers

For The Installer: Remote Condenser

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

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

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.

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 and a

” diameter liquid line,

” diameter discharge line. Both ends of each line have quick connect couplings, the end without access valves goes to the ice maker.

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

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

Condenser Line Set

Connections

Coil Excess Line Set

Horizontally Inside the

Building

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

”. Check local codes, a separate

of 1

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. 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.

Ice Machine

Refrigeration Line

Set Connections

January 2000

Page 7

CME506R, 656R, 806R: AutoIQ Cubers

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. Lubricate the inside of the couplings, especially the O-rings, with refrigerant oil.

It is important that ONLY the nut on the pre-charged tube be turned, or the diaphragms will be torn out by the piercing knives and they will be loose in the refrigeration system.

Tighten Swivel Nut

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

Clean and Lubricate Couplings

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

•

Final Connections:

4a. Begin by tightening the couplings together by hand until it is certain that the threads are properly engaged.

The

² discharge line (schrader valve end)

goes to the remote condenser fitting marked “discharge line”.

The

² liquid line (schrader valve end) goes

to the remote condenser fitting marked “liquid line”.

The

² discharge line goes to the ice maker

fitting marked “discharge line”.

The

² liquid line goes to the ice maker

fitting marked “liquid line”.

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

Rotate Swivel Nut ¼ Turn More

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. Do NOT over tighten.

4b. Then using two wrenches tighten the coupling until it bottoms out or a definite increase in resistance is felt.

January 2000

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

Page 8

CME506R, 656R, 806R: AutoIQ Cubers

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 t he ice maker electrical junction box.

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

1. Remove the junction box cover.

Condenser Electrical

Connection

Condenser Power

Supply Connection

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 will and the services of a licensed electrician will be required.

Ice Machine

Electrical

Connection

Building

Power Supply

Electrical Connection,

Single Unit Shown

January 2000

Page 9

CME506R, 656R, 806R: AutoIQ Cubers

Electrical Connections: KCMR230 Fan Relay Kit (CME656R & CME806R only)

When 2 ice machines are connected to 1 remote condenser coil, and the fan motor is powered from the ice machines, a relay kit is required to connect power to the fan motor.

1. Attach the relay box of the KCMR230 to a location that is convenient for installation and future service.

2. Attach a solid earth ground wire to the ground screw.

3. Route the connecting wires from the first ice machine’s fan wires to the relay kit terminal strip posts marked: No. 1 Ice Machine.

4. Route the connecting wires from the second machine’s fan wires to the relay kit terminal strip posts marked: No. 2 Ice Machine.

5. Attach wires at the fan relay kit terminal strip marked: To Remote Fan, and route them to the remote condenser electrical connection.

6. Make the proper electrical connection at the junction box.

Conform to all applicable codes.

A. Before initial start up. Compare the illustration of the KCMR230 terminal strip to the connections at the KCMR230:

Terminals 1 and 3 must be connected to a

•

common leg (such as L1). Terminals 2 and 4 must be connected to a

•

common leg (such as L2).

B. After initial start up, test with a volt meter (compressors must be ON).

1. Switch on ice maker #1, then ice maker #2.

2. Test with a volt meter between terminals #2 and #4, then between terminals #1 and #3.

List the voltages and compare to the table:

If there is full voltage where there should be NO or little voltage:

Test Terminals

1-2 Full

1-3 No voltage

2-3 Full

2-4 No voltage

3-4 Full

1-4 Full

Voltage Should Be

Tested Voltage Was:

KCMR230 RELAY BOX

Phasing: To be certain that a reliable installation of the KCMR230 kit has been accomplished, a check of the electrical phasing is required.

The goal is to have each set of points in the relay “break" the one power “leg" - so there is no voltage potential when switching.

Note: 3 phase machines must have the same “leg" or line connected to L3 on BOTH ice machines contactors, and if there is a “wild leg" it must be connected to L3 on BOTH ice machines.

Switch off ice maker number 2, and then switch off ice maker number 1.

After the units have pumped down, disconnect the electrical power. Do all wiring with the electrical power disconnected to BOTH ice makers at the source.

Reverse the connections at the KCMR230 terminal strip marked ice maker #1 (put the wire that was on terminal 1 on 2 and the wire that was on terminal 2 on 1).

Reconnect electrical power.

January 2000

Page 10

Plumbing:

CME506R, 656R, 806R: AutoIQ Cubers

All models require an adequate potable water supply and a gravity drain. The recommendations

for tubing are: Water supply to be

“ OD. Drain to

be ¾ “ OD.

Supply:

All models have 1 water supply connection, a

“

male flare at the back of the cabinet.

Drain:

All models have 1 gravity drain connection,a¾“ FPT fitting at the back of the cabinet.

It must be vented at the back of the cabinet.

The ice storage bin will have a drain out the back or base, depending upon the model. Note: Scotsman HTB555 (shown in this manual) may be drained either out the back or the base.

Water Supply

Line, Optional

Filter Shown

Water Supply and

Drain Connections

HTB555 Drain

Set Ups

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

Follow all applicable codes

Reservoir Drain

Connection

Bin Drain

Connection

January 2000

Page 11

CME506R, 656R, 806R: AutoIQ Cubers

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.

4. Switch on the electrical power. Do not start the machine for 4 hours.

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. Has the correct electrical power been supplied to the machine?

4. Have all the water supply connections been made?

5. Have all the drain connections been made?

6. Has the unit been leveled? Level the unit at the water reservoir.

7. Have all unpacking materials been removed?

8. Is the water pressure adequate?

9. Have the drain connections been checked for leaks?

10. Has the bin interior been wiped clean or sanitized?

11. Have any water filter cartridges been replaced?

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

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

January 2000

Page 12

CME506R, 656R, 806R: AutoIQ Cubers

Component Location and Function:

Reservoir: Contains the water charge used for every batch of ice.

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

Water Level Sensor: Controls size of ice cube by measuring how much water is used in a cycle. It consists of a float, stem and electric eye. As the machine is pumping water during ice making, the stem will be seen moving slightly. This is normal. As the machine makes ice the visible portion of the stem will slide down thru the slot in the sensor body.

AutoIQ Controller: Controls the complete operation of the ice machine. Turns it on and off; switches it between cycles; shows information via indicator lights; and shuts the machine down if there is a problem.

Evaporators/Freezing Compartment: Ice making area. 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 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.

Refrigeration Service Access Valves: Only to be used by a certified technician. Allows access to the refrigeration system for diagnostic information.

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 the water.

Compressor: The refrigerant vapor pump, it forces the refrigerant to flow thru the refrigeration system tubing.

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

Access

Valves

Inlet Water

Valve

AutoIQ

Controller

Compressor

Water Pump

Water Level

Sensor

Evaporator

Cube Deflector

Reservoir

January 2000

Page 13

Component Location

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