Scotsman CME2006R SERVICE MANUAL

Introduction

CME2006R

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.

This machine incorporates advanced technology,
including a scroll compressor.

Be certain that the information applies to the
model in question. If no model is listed, the
information applies to all models.

TABLE OF CONTENTS

Introduction ..................PAGE 1

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

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

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

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

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

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. Afterthat is
the sanitation section, followed by service
diagnosis and repair.

All Scotsman CM3models, like this one, feature
Scotsman’s AutoIQ™ control system and
ReliaClean™ water system cleaning process.

How The Electronic Cuber Works ...... PAGE23

Technicians Only: Freeze Cycle Sequence . PAGE 24
Technicians Only: Harvest Cycle & Notes . . PAGE 25

Sanitation and Cleaning ........... PAGE26

Additional Maintenance ........... PAGE27

Additional Maintenance: Water Distributors . PAGE 28

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

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

Stacking ....................PAGE 9

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

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

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

Electrical ....................PAGE 13

Plumbing ....................PAGE 14

After Utility Connections ............PAGE 15

Component Location and Function ......PAGE 16

System Controller ...............PAGE 17

Initial Start Up .................PAGE 18

Startup: Three Phase Compressor ......PAGE 19

Additional Maintenance: Water Valve Screen PAGE 29

Additional Maintenance: Ice Sensors, Cond. . PAGE 30

Service Diagnosis: Diagnostic Lights .... PAGE31

Service Diagnosis .............. PAGE32

Service Diagnosis: Components ....... PAGE33

Service Diagnosis .............. PAGE34

Operational Characteristics: CME2006R . . . PAGE 35

Suction Pressure ............... PAGE36

Removal and Replacement ......... PAGE37

Removal and Replacement ......... PAGE38

Removal and Replacement: Controller .... PAGE39

Removal and Replacement: ......... PAGE40

Removal and Replacement ......... PAGE41

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

How To Operate The System Controller . . . PAGE 21

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

Printed on recycled paper.

July 1998

Page 1

Refrigerant .................. PAGE42

Liquid Charging ............... PAGE43

Before Calling for Service .......... PAGE44

Service parts list & wiring diagrams located

in the middle of this manual.

Specifications

CME2006R

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 50

Water Temperature 40oF. 100oF.

Water Pressure 20 psi 80 psi

Voltage (60 Hz) 197 253

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.

o

F. 100oF.

Bins:

All models will fit a standard, 48" wide or wider
open top Scotsman Ice Storage Bin. Some
examples are:

• 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 haas the required baffle. Baffle
must be approximately in the position shown in the
diagram below.

Baffle

Scotsman reserves the right to make design

12.0"

changes and/or improvements at any time.
Specifications and designs are subject to change

4.0"

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.

Side View

BASIC INFORMATION

Dimensions

Model Number

CME2006RS-32C 48 ½ “ x 24" x 28 208-230/60/1 ECR611-32A 336 oz 30 40

CME2006RS-3C same 208-230/60/3 ECR611-32A 336 oz 20 30

W x D x H
(w/o bin)

Basic Electrical
(volts/Hz/phase)

Use
Condenser

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

Use precharged tubing kits, LRTE25 (25’) or LRTE40 (40’) or LRTE75 (75’). Select the length closest to
the needs of the particular installation. NOTE: These line sets have a larger diameter discharge line than
line sets for smaller Scotsman remote systems and are the only line sets that may be used with this product.

Refrigerant
Charge
R-404A

Minimum
Circuit
Ampacity

Maximum
Fuse Size

The stacking kit required to place two like model cubers together is: KSCME6-LG-B.

November 2004

Page 2

Condenser and Ice Machine Layouts

c

55.3c

.88 DIA. ELECTRICAL
INLET

DISCHARGE LINE
1/2" MALE CPLG.

29.50 in

74.9 cm

CME2006R

ERC611

.562 DIA.
MOUNTING
HOLES (4)

6.00 in

15.2 cm

CONDENSER FINS

32.16 in

81.7 cm

37.75 in

95.9 cm

MINIMUM FOR

UTILITY CONNECTIONS

2.75

38.47 in

97.7 cm

32.32 in

35.72 in

90.7 cm

15-0782-01CANCAUSE INJ URYOR DEAT H:DISCONNECTALLREMOTEELEC TR ICPOWERSUPP LIE S BEFORESERVICING.RISKOF ELECTRICSH OCK^MWARNING

2.84 in

7.2 cm

82.1 cm

28.07 in

71.2 cm

MINIMUM BIN
TOP OPENING

PLAN VIEW

24.71 in

62.7 cm

7.60 in

19.3 cm

26.10 in

66.3 cm

11.50 in

29.2 cm

14.56 in

36.9 cm

27.56 in

70.0 cm

29.19 in

74.1

m

18.75 in

47.6 cm

.65 in

1.7 cm

LIQUID LINE
3/8" MALE CPLG.

AIR FLOW

ICE

OPENING

6.00 in

15.2 cm

MINIMUM FOR

AIR VENTILATION

REMOTE CONDENSER
LIQUID LINE
3/8" MALE CPLG.

23.30 in

59.2 cm

22.65 in

57.5 cm

BACK VIEW

DUMP
VALVE
DRAIN
3/4" F.P.T.

REMOTE CONDENSER
DISCHARGE LINE
1/2" MALE CPLG.

WATER INLET
3/8" FLARE

July 1998

4.20 in

10.7 cm
ICE

OPENING

18.67 in

47.4 cm

Page 3

.88 DIA. KNOCKOUT
ELECTRICAL INLET

15.77 in

40.1 cm

21.77 in
m

10.15 in

25.8 cm

2.50 in

6.4 cm

5.87 in

14.9 cm

17.87 in

45.4 cm

2.46 in

6.2 cm

3.81 in

9.7 cm

.88 DIA. KNOCKOUT
REMOTE CONDENSER FAN

23.87 in

60.6 cm

Pre-Installation

CME2006R

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.

Nameplate

Serial Number Plate

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
ReliaClean™ water system provides an adjustment
method so the amount of water rinsed out of the
machine per cycle can be changed. 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.

July 1998

Page 4

Location & Assembly

CME2006R

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.

Cabinet Panel Removal:

1. Remove the front panels by removing the four
screws connecting the front panels 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.

If the ice machine has not been unpacked, do so
now. Remove the carton from the skid. Remove
shipping straps.

Remove the left side and front panels. Remove all
packaging materials including the compressor
shpping brackets..

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.

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:

To Remove

Evaporator Cover:

Push Up and Tilt Out

November 2003

Page 5

Bin Control: Installation

CME2006R

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.

Bin Thermostat Altitude Correction Table

CW Turns of Range Screw (under plastic cover)

Feet Turns Feet Turns
2000 55
4000 160
6000 250

o

o

o

8000 340
9000 385
10000 405

Use This Table to Adjust Thermostat

o

o

o

Bin

Thermostat

Body

Bin Thermostat Bulb

Thermostat Bulb

Routing Tube

Route Bin Thermostat Bulb Into Bin

July 1998

Page 6

Bin Control

Bin Thermostat

Bracket

CME2006R

Bin Thermostat Capillary Tube

Mount Bulb Here

Minimize Excess

Tube in Bin

Attach Thermostat Bulb to Bracket

Three-Pronged Knob

Thermostat and

Bracket

Attach Bracket to Bottom of Ice Machine

July 1998

Page 7

Stacking Kit - KSCME6-LG-B

CME2006R

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.

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.

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.

May 2001

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.

Page 8

Stacking

CME2006R

Gasket on Plastic

Walls of Lower Unit

Gasket for Metal
Edges of Bottom

Unit

Front-To-Back

Mounting Straps

and Hardware

Bracket

Shield Hanger

Bracket

Shield

May 2001

Page 9

For The Installer: Remote Condenser

CME2006R

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.

Precharged Line Routing

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.

ERC611 Remote

Condenser

Electrical Power

Supply

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

3

" diameter liquid line, and a " diameter

8

5

8

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.

Coil Excess

Tubing

Horizontally

Within the

Building

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

July 1998

Page 10

Typical Installation

Remote Condenser Location

CME2006R

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.

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.

greater than the 150 maximum and is NOT
acceptable.

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

This location would

159.5 is

rd

dd

Max 35’

22.87"

17.15"

Max 15’

Remote

Condenser

Located ABOVE

Ice Machine

Remote

Condenser

Located BELOW

Ice Machine

hd

40.35"

Condenser Distance &

Location Schematic

July 1998

Page 11

Coupling Instructions

CME2006R

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.

Clean and Lubricate Couplings

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

• The " discharge line (schrader valve end)

5

8

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

• The " liquid line (schrader valve end) goes

3

8

to the remote condenser fitting marked
“liquid line".

• The " discharge line goes to the ice maker

5

8

fitting marked “discharge line".

• The " liquid line goes to the ice maker

3

8

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.

Tighten Swivel Nut

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.

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.

Rotate Swivel Nut ¼ Turn More

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.

July 1998

Page 12

Electrical

CME2006R

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.

Remote Condenser

Power Connection

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.

Interconnecting

Wires

Power Supply

July 1998

Page 13

Plumbing

CME2006R

All models require an adequate potable water
supply and a gravity drain. The recommendations
for tubing are:

• Water supply to be

• Drain to be

3

⁄4" OD.

3

⁄8" 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:

3

All models have 1 water supply connection, a

⁄8"

male flare at the back of the cabinet. Connect to
cold potable water that has adequate pressure.

Note: Using water supply tubing smaller than3⁄8"
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

Refrigerant and

Electrical Lines to

Condenser

Potable Water

Inlet - 3/8"

Male Flare

Field Supplied

Water Filter

Potable

Water

Source

Vented

Drain

Ice

Machine

Drain

Bin Drain

July 1998

Page 14

Floor Drain

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. 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?

CME2006R

___ 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. Proceed to Initial Start Up.

July 1998

Page 15

Component Location and Function

CME2006R

Reservoir: Contains the water used to make ice.
Water Inlet Valve: Opens to allow water into the

reservoir.
Evaporators/Freezing Compartment: Location

of the CM Deep Cell 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.

Head Pressure

Control Valve

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.

Liquid Check

Valve

Filter-Dryer

Receiver

Harvest
Bypass

Valve

Compressor

Discharge

Check

Valve

Hot Gas

Valve

Water
Pump

Evaporators

Inlet Water Valve

Thermostatic

Expansion

Valve

Accumulator

with Heat

Exchange

July 1998

Page 16

Purge Valve

System Controller

CME2006R

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.

LOW VOLTAGE IN/OUT

WATER VALVE

HOT GAS VALVE

PURGE VALVE TIMER

CONTACTOR COIL

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 motor
is 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.

HI VOLTAGE IN/OUT

WATER PUMP

89

STACKING and/or

THERMOSTAT

FUTURE USE

RESERVOIR & DISCHARGE

LINE THERMISTORS

ICE SENSOR

ICE SENSOR

RESERVOIR WATER

LEVEL SENSOR

FACTORY USE

7

6

5

4

3

2

1

PUSH BUTTON

CONTROL SWITCHES

INDICATOR LIGHTS:

BIN FULL

FREEZE

HARVEST
CLEAN

OFF

DIAGNOSTIC LIGHTS:

WATER
REFRIGERATION

July 1998

Page 17

Initial Start Up

CME2006R

Note - Delay initial start up for 4 hours after
electrical power is switched on to allow the oil in
the compressor sump to warm up.

1. Remove the left front and left side panels.

2. Locate and open the liquid line valve.

Open By Turning

Stem Fully Out (Up)

3. Double check quick-connect couplings for leaks.

4. Check that the compressor shipping brackets
have been removed.

5. Locate the Controller.

6. Check for electrical power. The Off light on the
controller should be glowing.

7. Open the water supply valve.

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

point, the first time that happens the water
valve will re-fill the reservoir. The second
time it 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 pump is off, it will restart in < 74 seconds.

• 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.

Note: Up to 72 hours of compressor run time may
be needed to achieve rated performance.

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
adjust the 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.

Initial Start (30 seconds)

• The Freeze light will 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 compressor & remote fan motor start.

Note: Three Phase Units (Scroll Compressor). If at
start up the compressor makes a louder than
expected noise and does not begin to cool the
evaporators or suction line, the compressor motor
is likely running backwards. See next page.

Freeze Cycle

The Freeze indicator light will be on. The unit will
be in a Freeze cycle for many minutes.

• 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

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 5 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 is off) and then switch off.

November 2003

Page 18

Startup: Three Phase Compressor

All three phase motors can operate in either rotor
rotation direction depending upon how power is
supplied to the motor.

However, a THREE PHASE scroll compressor
will not work properly if run BACKWARDS.

If a three phase ice machine’s compressor is
making an unusually loud noise and the ice
machine does not appear to be refrigerating the
water, it’s likely that it’s running backwards.To
fix this two of the three compressor motor leads
need to be reversed.

1. Disconnect electrical power.

Electrical Shock Hazard

CME2006R

Disconnect electrical power
before beginning procedure.

2. Remove left front panel.

3. Pull off compressor terminal cover.

4. Locate terminals, switch any two wires.

5. Return compressor terminal cover to its original
position.

6. Reconnect electrical power.

7. Push freeze button, compressor will start and
soon begin to cool the evaporators.

July 1998

Page 19

Adjustments

CME2006R

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

System 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 System 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 System Controller. Examine the next section to
become familiar with the System 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:
Use for typical water conditions.

Harvest, Clean, Off.

• 4. Moderate Purge is when these 2 lights

are ON:
conditions.

Clean, Off. This is for good water

• 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.

Typical Ice Level When Unit Shuts Off

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.

July 1998

Page 20

How To Operate The System Controller

The System 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 System
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.

7

6

5

4

3

2

1

CME2006R

89

PUSH BUTTON

CONTROL SWITCHES

INDICATOR LIGHTS:

BIN FULL

FREEZE

HARVEST
CLEAN

OFF

DIAGNOSTIC LIGHTS:

WATER
REFRIGERATION

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

July 1998

Page 21

CME2006R

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.

SureFlow™ Remote System:

Freeze Cycle: 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.

Remote Condenser

Head
Pressure
Control
Valve

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.

Discharge Line

Harvest

Bypass

Valve

Check
Valve

Receiver

Check
Valve

Heat

Exchange

Accumulator

Thermostatic
Expansion
Valve

Refrigerant
Distributor

Evaporator

Suction

Evaporator

Compressor

Hot Gas

Valve

Refrigeration Schematic

July 1998

Page 22

Evaporator

How The Electronic Cuber Works

CME2006R

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 System
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 System 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. The thermostat in the bin is used 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 to last cube. This is measured by a set of
electric eyes in the cube outlet port. During harvest
individual ice cubes pass between the
photo-electric eyes and the interruption of the
signal from the emitter to the receiver signals to the
controller that ice is being released.

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

July 1998

Page 23

Technicians Only: Freeze Cycle Sequence

CME2006R

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

System 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
System 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 System 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 System
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.

July 1998

Page 24

Technicians Only: Harvest Cycle Sequence & Other Notes

CME2006R

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 open from 12 to 32
seconds at the start of the Harvest Cycle, the
shorter time is for low discharge temperatures and
longer time is for high discharge temperatures.

During the Harvest Cycle, ice will be falling from
the evaporators and between the ice sensor’s
photo-electric eyes. The System Controller
monitors how long the ice falls and uses that time
to determine the next harvest cycle’s 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.

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:

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.

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 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.

Single Phase: Power Interruptions:

If the power supply to a single phase unit is
interrupted for less than a second, a time delay
relay will keep the compressor from restarting until
30 seconds have passed. Because the controller
should still be operating.

Diagnostic Light Code Table

If a Diagnostic
Light

Blinks once and
repeats

Blinks twice and
repeats

Blinks three
times and
repeats

Is ON all the
time

Both ON all the
time

Water Light

Water pump will
not start

Lack of water fill No harvest of ice

not used

Water valve
leaking thru
rapidly

Check for thermistor set unplugged
or failed

Refrigeration
Light

Very long ice
harvest

High Discharge
Temperature

Check for low
discharge
temperature or
long freeze cycle

July 1998

Page 25

CME2006R

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. Return the evaporator cover
to its normal position.

8. Mix a solution of 8 ounces of Scotsman ice
machine cleaner and 1 gallon of warm (95-115
water. Use the solution to scrub the splash panels
and cube deflectors in the separate container.

Scotsman Ice Machine
Cleaner contains acids.
Acids may cause burns.

If concentrated cleaner
comes in contact with
skin, flush with water.

If swallowed, do NOT
induce vomiting. Give
large amounts of water or
Milk. Call Physician
immediately. Keep out of
the reach of children.

o

F.)

9. After the ice machine cleaner has circulated for 10
minutes, push and release the Clean button. This
starts the rinsing process. The Clean indicator light
will be ON. Note: The rinse process flushes any
residual cleaner out of the ice machine’s water
system.

10. Continue the rinsing process for 20 minutes, then
push the off button to switch the machine off.

11. Go to the next step to sanitize the machine or go
to step 19 to finish the cleaning process.

12. Mix 2 gallons of Sanitizer solution. Follow local
codes for Sanitizer.

Note: A possible sanitizing solution may be made by
mixing 1 ounce of liquid household bleach with 2
gallons of warm (95-115

13. Push and release the Clean button again.

14. Pour 24 ounces of Sanitizer solution into the
reservoir water.

15. After the solution has circulated for 10 minutes
push and release the Clean button. This starts the
rinse process. Sanitize the ice storage bin while
waiting.

16. Continue the rinsing process for 20 minutes, then
push the off button to switch the machine off.

17. Remove the evaporator cover and spray or wash
all interior surfaces of the freezing compartment
including the evaporator cover with sanitizer solution.

18. Thoroughly immerse the splash panels and cube
deflectors in the sanitizing solution.

19. Return the ice sensors, splash panels and cube
deflectors to their original positions.

20. Return the evaporator cover to its original position.
Push and release the Freeze button.

21. Return the front panels to their normal positions
and secure them to the machine with the original
screws.

o

F.) potable water.

July 1998

Page 26

Additional Maintenance

CME2006R

To Properly Place the Evaporator Covers

Removal:

1. Remove right front panel.

2. Push up on evaporator cover and swing out the
base.

3. Use the finger holes to pull the lower inside
cover down and swing it out from the machine.

4. Pull upper inside cover out from behind the
pump hose.

Note: ALL COVERS MUST BE PROPERLY IN
PLACE or the MACHINE WILL MALFUNCTION.

Insert Bottom Tabs in 5th

Slot of Cube Deflectors

To drain reservoir (if desired):

1. Remove left front panel.

2. Push and hold the Off button.

3. Remove screw holding reservoir cover, pull inlet
tube out of reservoir cover, lift cover out of machine.

4. Locate drain plug (at the back of the reservoir).
Note: Top unit of a stack will drain thru the bottom

machine.

5. Pull the drain plug to release the water. On units
over an ice storage bin the water will drain into the
bin.

6. Reverse steps 2-5 to reassemble.

7. Push and release Freeze button.

8. Return the left front panel to its original position.

Or: Push and

Hold the Clean

Button for 3

Seconds to

Activate Purge

Valve

Replacement:

1. Return upper inside cover to its original position.

2. Using finger holes to control the part, insert the
two tabs on the bottom of the lower inside cover
into the 5th slot of each cube deflector.

3. Push down and insert upper edge of the lower
inside cover into the slot on the bottom of the
evaporator bracket.

4. Insert evaporator cover into plastic slot at the
top of the compartment and then place the lower
end onto the reservoir wall.

July 1998

Page 27

Or: Drain the Reservoir by Holding Purge

Valve Open While in a Clean Cycle

To Sanitize the Ice Storage Bin

1. Remove all ice.

2. Remove baffle.

3. Switch ice machine OFF or wait for it to be in a
cleaning cycle.

o

4. Mix a 1 gallon solution of warm (95-115

F.) water

and sanitizer. Follow local codes for sanitizer.

5. Wash or spray the entire interior of the ice
storage bin with the sanitizer solution. This includes
the bottom of the ice machine and the inside of the
door, the door gaskets (if any) and door frame.

6. Pour excess sanitizer into the bin to flush the
drain system.

7. If the approved sanitizer requires a rinse, rinse
all interior surfaces with potable water.

Additional Maintenance: Water Distributors

CME2006R

It may become necessary to remove the water
distributors from the top of the evaporator and
clean (de-mineralize) them outside of the ice
machine.

1. Remove front panels.

2. Push and release the OFF button.

3. Remove the evaporator covers.

4. Pull the tab at the front of the evaporators
forward and lift the water distributors up until they
clear the tab.

Water

Distributors

distributors in or with a solution of Scotsman Ice
Machine Cleaner and warm potable water.

10. Return the water distributors to their normal
installed position.

11. Push and release the clean button to flush the
water system.

12. After the machine stops, push and release the
Freeze button.

Check That Water

Channels Are Clear

5. Repeat for all evaporators and distributors..

6. Slide the left and right groups of distributors
forward until the center manifold is accessible.

7. Remove the distributors from the manifolds.

Manifold

8. 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.

13. Replace the evaporator covers.

Insert Bottom Tabs in 5th

Slot of Cube Deflectors

14. Replace the front panel.

9. Examine the water distributors. Although they
are made of a material that is resistant to mineral
build up, some may be present. Soak or scrub the

July 1998

Page 28

Additional Maintenance: Inlet Water Valve Screen

CME2006R

The inlet water valve has a screen on its inlet side
to keep debris from flowing into the valve. In some
cases, this screen may become clogged or
restricted by debris build up. Check for the proper
water flow:

Flow rate is 2.7 G.P.M.

1. Remove front panel.

2. Obtain a 16 ounce cup and a watch.

3. Pull the water discharge tube out of the
reservoir and place it in the cup.

4. Push and release the Harvest button.

5. If working properly, the water valve will fill an 16
oz cup in about 3 seconds. Be prepared to push
the Off button! If it does not, the water valve inlet
or other water device is restricted.

To Check the Inlet Water Valve Screen.

1. Disconnect the electrical power.

2. Shut off the water supply.

3. Remove the left front panel.

4. Unplug the electrical connection of the inlet
water valve.

Water Level Sensor

The water level sensor contains two photo-electric
eyes and each eye has an emitter and a receiver.
For proper operation the receiver must be able to
sense the signal of the emitter.

Dust can reduce the efficiency of the photo-electric
eyes. To clean them:

1. Remove left front panel.

2. Push and hold the Off button until the machine
stops.

3. Remove the screw holding the right reservoir
cover to the reservoir and lift the cover up.

4. Reach in and hold the float while pulling the float
stem up and out of the float.

5. Reach in under the pump mounting cover and
locate the two tabs of the water level sensor.
Squeeze them towards each other and pull the
sensor up and out of the pump mounting cover.

6. Disconnect the wire harness from the water level
sensor.

7. Remove two screws holding the dust cover to
the water level sensor.

5. Remove the screws holding the inlet water
valve to the cabinet.

6. Remove outlet tube from inlet water valve.

7. Rotate inlet water valve from inlet fitting and
remove valve from machine.

8. Examine the inlet screen, if dirty, brush off
screen.

Note: Screen is not replaceable, and may only be
removed by taking off the covering bracket. The
bracket forms part of the inlet water system, and
must be water tight to the valve body, removal is
not recommended.

9. Reverse to reassemble.

Dust

Cover

8. Clean the 4 lenses with a soft tissue or cotton
swab.

Clean

Lenses

Clean

Lenses

Water Level Sensor, Dust Cover Removed

9. Reverse to reassemble.

July 1998

Page 29

Additional Maintenance: Ice Sensors, Condenser

CME2006R

The ice sensors use a system of infrared emitting
and receiving components to sense the build up of
ice in the bin. 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 panels.

2. Push and release the harvest button.

3. Wait for the machine to stop.

4. Remove the evaporator cover.

5. Locate the front ice sensor.
Push the sensor from the front (at the wire area) to

the back until it releases from the holder.

6. Locate the back ice sensor Pull on the
rectangular tab to release it from its mounted
position.

7. Examine the bottom of the brackets, there are
two sensors in each bracket, check that they are
clear of mineral build up. They may be wiped
clean with ice machine cleaner to assist in
removal of the build up.

To Clean the Remote Air Cooled Condenser

1. Disconnect and lock out the electrical power.

2. At the remote condenser, check for loose debris
on the roof, remove any near the condenser.

3. Check the fan blade and condenser for grease or
dust build up. Brush the intake surfaces (outside) of
the condenser coils with a nylon brush to remove
surface dirt. Use a fin comb to straighten any bent
fins.

Note: ERC611 air flow is UP, towards the fan.
If grease is present, use coil cleaner on the

condenser. Be sure to wipe up any excess coil
cleaner.

4. Reconnect the electrical power.

Note: Do NOT use abrasive materials or cleaner
on the ice sensor lenses. A soft toothbrush works
well to get into the hard to reach spots.

8. Reverse steps 1-6 to reassemble.

July 1998

Page 30

Service Diagnosis: Diagnostic Light Analysis

Problem or Symptom Possible Cause Probable Correction

Machine is off Bin is full Use some ice

Bin thermostat is closed Check thermostat, unplug the connection to

the controller at terminal 7 and wait 4
minutes. If the machine starts, the thermostat
was closed and needs to be adjusted or
replaced. If the Bin Full light does NOT go out
check the ice sensors. See next page bottom.

Power is off, check Lights. If all Lights are out, check power supply,

restore power if off

Transformer is open If all Lights are out and there is power, check

transformer output for 24 vac
Unit manually switched off Push and release Freeze button
Unit has Shut Down Check for Refrigeration or Water Error

CME2006R

Unit is off on a Water
Error

Unit is off on a
Refrigeration Error

Water supply inadequate Check water Light, if the Light blinks 2 times

and repeats, check the water inlet valve.**
Water pump malfunction Check that pump hose is attached and if

pump is plugged in and working.
Water level sensor may

have failed.

Low discharge or long
freeze cycle

Harvest problem Check refrigeration Light. If the Light blinks

High Discharge Temp Check refrigeration Light. If the Light blinks 3

Check float stem, reset machine. If it will not

reset or gives another water error and all else

is OK, replace the water level sensor.

Check refrigeration Light. If the Light is

glowing, there is a probable refrigeration

problem - Check fan motor, harvest bypass

valve and/or controller.

once and repeats, look for a harvest problem.

where some cubes were sensed.**

Check refrigeration Light. If the Light blinks

two times and repeats, look for a harvest

problem. - no cubes sensed**

times and then repeats, check for a reason

for high discharge temperatures - fan motor

hot ambient, or blocked headmaster.
Unit does not go into

harvest - exceeds
maximum freeze time

Exceeds max harvest time Check for cause of long harvest cycle**

Unit runs and both
Diagnostic lites are ON

Same, only 1 light on Reservoir temp. wrong Check water temp. and sensor.

* Machine may be reset by pushing and releasing the Off button, then pushing and releasing the
Freeze button. ** See following pages

Temperature sensors out
of range

July 1998

Page 31

Push and release Off button. Push and

release Freeze button. Check operation.

Push cube size float down, check operation.

Replace the temperature sensor set (water

and discharge).

Service Diagnosis

Problem or Symptom Possible Cause Probable Correction

CME2006R

Unit is off because of
a “Harvest Problem”

Cubes are too large Water sensor float is

Cubes are too small Not enough water Check for leak in reservoir

Bin controls did not sense
ice falling, unit stayed in
harvest until the maximum
harvest time ran out.

Bin controls or System
Controller may have failed.

Other components may
have failed

sticking.
Inlet water valve leaking

thru (slowly)

Check bin controls. If the bin full light is on or
blinking the bin controls may be dirty. Clean if
dirty. The board and bin controls may also
need to be checked.

Check evaporators for lime scale build up.
Clean evaporators and bin controls if dirty.

Push and release Off button. Push and
release Freeze button. Check machine
operation. Check if ice is made and harvests.

See “Unit does not shut off” below..

Check the next page

Check/clean

Check hose from water valve for slow drip.
Replace valve if dripping.

Check/clean water sensor eyes
Check for a leak thru the purge valve

Low ice capacity Dirty condenser Clean condenser

Recirculation of air Block air re-circulation or move condenser
Low refrigerant charge Check system. If there is a low charge, find

the leak, recover the refrigerant, repair the
leak, replace the dryer, evacuate and weigh
in the nameplate charge.

Too much water Check for inlet water valve leak thru

Unit does not shut off Ice sensing system may

have failed.

Check controls. Unplug thermostat and check
bin full light, if off, place something between
the electric eyes. The bin full light should
begin to blink (after 20 seconds of continuous
blockage it will glow steadily). If not, check
operation of electric eyes by unplugging #4
and jumping out the two pins on the controller
(touch the tool to the cabinet to discharge
static electricity before contacting the
controller). If the bin full light blinks, replace
the bin controls. If it does not blink, replace
the controller. Note: Leaving #4 unplugged
and jumped for 20 seconds will shut the
machine down on a bin full (at the end of the
harvest cycle). It will restart after 4 minutes or
may be reset by pushing the Freeze button.

July 1998

Page 32

Service Diagnosis: Components

Problem or Symptom Possible Cause Probable Correction

CME2006R

Fan motor does not
turn.

Pump motor does not
turn

Hot Gas Valve does
not open.

Hot Gas Valve leaks
thru (warm tube
temperatures on both
sides of valve during
freeze)

Water Inlet Valve
does not open

Open motor windings, or
seized bearings

No power to fan motor Contactor may not close.
Open motor windings, or

seized bearings
No power to pump Check electrical connections. In Freeze, the

Open solenoid coil. Replace hot gas valve
Stuck valve Replace hot gas valve
No power to coil in Harvest Check wire connections, if ok, replace

Mechanical problem in
valve

Open solenoid coil Replace valve
Stuck valve Replace valve

Replace fan motor

Replace pump

pump should have power to it. If not, replace

the System Controller.

System Controller

Replace valve

Water Inlet Valve
does not flow enough
water

Water Inlet Valve
leaks thru

Compressor runs, but
loudly & no ice is
made

Compressor does not
work

No power to valve (best
checked at the beginning
of Freeze)

Restriction in water supply Check water filters and/or inlet screen.

Mechanical problem in
valve

Three phase compressor
is phased wrong

Unit in Clean cycle Push and release Freeze button.
Contactor coil open Replace contactor
Open starting components Check and replace
Open windings Check and replace compressor
Internal valve failure Replace compressor

Check wire connections, if ok, replace

System Controller

Replace valve

Switch any two wires to the compressor

July 1998

Page 33

CME2006R

Service Diagnosis

Problem or Symptom Possible Cause Probable Correction

Poor Harvest Scale in water system. Clean water system.

Water or Air Temperatures too
cold

Low system charge Recover and weigh charge.
Bypass solenoid does not open Check solenoid operation
Check valve leaks back Replace check valve
Hot gas valve does not open Check for power to the coil, if

Head pressure control valve
does not maintain enough
pressure (in freeze)

Low capacity High discharge pressure, from

a dirty condenser or faulty fan
motor

Extreme hot location Relocate the cabinet
Extremely hot condenser

location
Overcharge of refrigerant Recover, evacuate and weigh

Check temps. Unit cannot
operate with water and air
temps below stated limits.

there is power, replace the hot
gas valve

Replace the head pressure
control valve

Clean the condenser, repair the
fan motor

Move condenser or provide
shade

in the nameplate charge

Hot gas valve leaks thru, unit
off on refrigeration error

Liquid and discharge lines are
in contact with each other

Compressor cycles on and off Compressor overheats Low on refrigerant, locate leak,

At the end of the freeze cycle,
there should be a definite
difference in temperature
between the inlet and outlet of
the Hot Gas Valve. If not,
replace the hot gas valve

Separate and insulate them

recover refrigerant, repair leak,
replace drier, evacuate and
weigh in the nameplate charge.

TXV superheat too high, check
charge, if charge is OK, replace
TXV

Mechanical fault with
compressor, replace
compressor

Internal relief valve opened,
check for cause of high
discharge pressure

July 1998

Page 34

OperationalCharacteristics:CME2006R

Cycle Times(minutes):

CME2006R

70oF. condenserair 70oF. indoor

o

air, 50
Freeze 11- 13 13 - 14
Harvest 2 ½ 2

F. water

o

F.condenserair90oF.indoor

90
air, 70

System Pressures(PSIG):

70oF.condenser air 70oF.indoor

o

air, 55
Suction: Endof Freeze 23 - 26 25 - 27
Suction: Peakin Harvest 80 - 90 90 - 100
Discharge:5 minutes into Freeze 240- 250 250-270
Discharge:Minimum inHarvest 145 160

F.water

o

F.condenser air 90oF.indoor

90
air, 70

Number ofEvaporators:

•6

RefrigerantCharge

•336 ouncesofR-404A

Compressor Type

•ThreePhase: CopelandScrollZS30K4E-TF5-230

•SinglePhase: CopelandScrollZS30K4E-PFV-230

TypicalCompressor Amps,

singlephase

•freeze19.6

•harvest22.5

threephase

•11 to9 freeze

•11 harvest

14
12
10

8

Three Phase Amp Draw

TypicalHarvestIceWeight

•20 -21 lb.

Hi PressureCutOut-AutomaticReset

•HiPressure CutOut -450PSIG

6
4
2

•HiPressure CutIn -350 PSIG

LowPressureCutOut-AutomaticReset

•CutOut at15 PSIG

•CutIn at30 PSIG

HeadmasterValve

0

Beg 2

mins3mins5mins

FreezeCycle Harvest

•Settingis217 PSIG

o

F.water

o

F.water

1st
fill10mins

EndHvstEnd

Hvst

July1998

Page35

Suction Pressure

CME2006 Suction Pressures

PSIG

100

80

60

40

20

CME2006R

70/70/50

0

Freeze Harvest

Time

Freeze

CME2006 Suction Pressures

PSIG

120

100

80

60

40

90/90/50

20

0

Freeze Harvest

Time

July 1998

Page 36

Freeze

Removal and Replacement

CME2006R

Inlet Water Valve

1. Remove the left front panel.

2. Shut off the water supply.

3. Push and release the OFF button.

4. Pull the wire harness off the inlet water valve.

5. Remove screws holding the inlet water valve to
the cabinet.

6. Pull the valve away from the cabinet and
disconnect the outlet tube.

7. Unscrew the water valve from the water inlet
tubing. Hold the barbed inlet fitting and rotate the
valve.

8. Reverse to reassemble.

9. Push and release the Freeze button.

10. Replace the front panel.

Purge Valve Timer

Water Pump

1. Disconnect the electrical power.

2. Remove the front panel.

3. Unplug water pump from its electrical connection.

4. Remove 1 plastic bolt and the reservoir cover.

5. Lift water pump up and disconnect outlet tube.

6. Pull float ball from float stem (it is a snap fit). Pull
stem out.

7. Locate water level sensor mounting tabs,
compress together to release sensor from bracket.

8. Remove water pump brackets from pump.

9. Reverse to replace.

10. Replace front panel.

11. Re-connect electrical power.

The purge valve timer is sensitive to electrostatic
discharge. Be certain to touch a grounded surface
before touching this component. Do the same
when handling the replacement part.

1. Touch a grounded surface.

2. Remove left front panel.

3. Disconnect electrical power.

4. Remove high voltage box cover.

5. Locate timer board at the back of the high
voltage box.

6. Unplug all the wires to the board.

7. Compress each of the four stand-off posts to
release the board from the stand-offs.

8. Remove the board from the unit.
Reverse to reassemble.

July 1998

Page 37

Removal and Replacement

CME2006R

Purge Valve

1. Disconnect electrical power.

2.

Electrical Shock Hazard.
Disconnect electrical

power before beginning
service.

Remove left front panel.

3. Unplug wire harness from purge valve coil.

4. Locate and remove the two screws securing the
purge valve to the machine.

5. Pull the inlet and outlet hoses off the purge
valve and remove it from the machine.

6. Reverse to reassemble. There are no internal
parts available for this valve.

Water Level Sensor/Float Stem

Note: Only one float stem fits this product. Be
SURE that this is the correct one.

1. Disconnect the electrical power.

2. Remove the front panel.

3. Remove 1 plastic bolt and the reservoir cover.

4. Pull float ball from float stem (it is a snap fit). Pull
stem out.

5. Locate water level sensor mounting tabs,
compress together to release sensor from bracket.

6. Remove harness from sensor.

7. Reverse to replace.

8. Replace front panel.

9. Re-connect electrical power.

Water Level Sensor

1. Remove front panel.

2. Push and hold the OFF button. Release it when
the machine stops.

3. Trace wire harness from water level sensor to
the System Controller (#2). Unplug the harness
from the controller.

4. Lift the pump and mounting plate up enough to
remove the float from the stem.

5. Remove two screws holding the sensor to the
pump bracket and lift the sensor up and out of the
machine.

6. Reverse to reassemble.

July 1998

Page 38

Removal and Replacement: System Controller

CME2006R

1. Disconnect the electrical power.

2. Remove the front panel.

3. Remove mounting screw holding controller to
cabinet.

4. Touch a metal surface to discharge any static
electricity.

5. Pull controller out slightly and unplug all
electrical connections.

6. Carefully remove the new controller from its
packaging.

7. Plug all electrical connectors into the new
controller.

8. Re-attach the controller to the cabinet.

9. Switch on the electrical power. All Lights should
lite up.

10. Push and release the Freeze button.

11. Replace the front panel.

Electric Eyes (Ice Sensors)

These must be replaced as a set.

1. Remove both front panels.

2. Push and release the Off button.

3. Remove evaporator cover.

4. Remove lower inner splash panel.

5. Locate the back electric eye. Pull out on the
rectangular tab until the sensor is free of its
installed position.

6. Unplug the back sensor from its wire harness.

7. Unplug the front sensor its wire harness

Back Sensor

Front Sensor Holder

8. Locate retainer clip in front sensor holder. Pull
clip up and out of the holder.

9. Push in on the place where the wires enter the
sensor until it releases from the holder.

10. Twist the sensor 90 degrees and pull it up and
out of the machine.

11. Reverse to reassemble. Be sure that the color
codes of the connecting wires match.

July 1998

Page 39

Removal and Replacement:

CME2006R

Discharge Line Temperature Sensor

1. Remove front panel, push and release the Off
button.

2. Remove top and left side panels.

3. Locate discharge line sensor. It is attached to
the discharge line of the compressor, 6" from the
compressor discharge port.

4. Un-snap the clip holding the sensor to the
discharge line.

5. Trace the sensor wires back to the controller,
they are plugged into #5 with the water
temperature sensor, and must be replaced with it.

6. Reverse to replace, be sure that the discharge
line sensor is 6" up from the compressor
discharge port. The discharge line sensor is
marked with yellow tape.

Note: Route wires so they do NOT contact the
discharge line.

Water Temperature Sensor

Note: This sensor is replaced as a set with the
Discharge Temperature Sensor.

Important Compressor Information

The compressor should not be replaced until it has
been determined that it has definitely failed. If it will
not start check the starting components first. If the
machine has low capacity, check for proper charge,
TXV operation, hot gas valve leak thru or inlet
water valve leak thru.

The metal bracket in front of the compressor must
be removed to access the compressor.

Note: This machine uses a Copeland Glacier scroll
compressor, which has the following unique
operating characteristics:

1. Do NOT bypass the low pressure control and
operate the compressor in a vacuum. The vacuum
can cause the fusite pins to arc and fail.

Determine proper compressor operation by
eliminating other causes for low capacity: TXV, Hot
Gas Valve, Harvest Bypass Valve, or Inlet Water
Valve. Finally compare amp draw, it should be
within 15% of what’s listed on page 35.

2. Do NOT touch the top of the compressor. It is
same temperature as the discharge line!

1. Remove left front panel.

2. Push and release Off button.

3. Remove 1 plastic bolt and the reservoir cover.

4. Locate water temperature sensor (inserted into
pump discharge hose).

5. Pull out to remove.

6. Trace back to system controller, unplug from
#5.

7. Remove the Discharge Line temperature sensor.

8. Reverse to reassemble.
Note: Do not push sensor tip in too far. There

should be about an 1/8" gap between the tip and
the inner wall of the water discharge hose.

Burn Hazard

Compressor top is HOT!

Do NOT touch

3. Discharge and suction fittings are copper-plated
steel. Use a brazing rod with some silver content.

4. Three phase motors can operate backwards, but
this compressor can’t. See page 19.

5. The oil charge is fine if it is just below the
half-way mark on the sight glass.

6. Weigh the charge into the discharge side. The
compressor may not start if the charge is only
present on the high or low side. See page 42.

7. When recovering refrigerant, do NOT recover
only from the discharge side. Some refrigerant will
be left in the low side and will be a hazard if a
brazing torch is applied.

8. Use the metal mounts that were on the ice
machine, do NOT use the rubber mounts from the
replacement compressor.

July 1998

Page 40

Removal and Replacement

CME2006R

Transformer and Compressor Starting
Components

Single phase compressors use a start relay, start
capacitor and run capacitor. All are located in a
sheet metal box to the right of the system
controller. The compressor contactor is also
located in that box.

1. Disconnect electrical power.

2. Remove front panel.

3. Remove 2 screws at the front edge of the metal
box, and pull the cover forward and out.

4. To check components, reconnect electrical
power.

Note: The contactor coil is 24 volt.

Evaporator Support Bracket

In the unlikely event that the evaporator support
bracket needs to be replaced, two people will be
needed.

1. Remove both front panels and the top panel.

2. Push and hold the Off button until the machine
stops.

3. Remove evaporator cover.

10. Check that all evaporators are properly seated
front and back.

11. Remove the wire ties, and return the splash
panels, hoses, and evaporator cover to their normal
positions. Check that water distributors are in place.

12. Push and release the Freeze button to start the
machine.

13. Check operation.

14. Return the top and front panels to their normal
positions.

Refrigeration System Components

Due to the expected level of training and
experience of a refrigeration mechanic, detailed
instructions regarding the replacement of
refrigeration components will not be presented.
However, critical items will be noted here.

Evaporators

In the unlikely event that an evaporator may need
to be replaced, do NOT braze the evaporator joints
when the evaporators are seated in the freezing
compartment, instead lift them up slightly so that
the joints to be brazed are above the top edge of
the freezing compartment.

4. Remove the interior splash panels.

5. Remove the hoses from the water distributors.

6. Use wire ties to hang the front of the
evaporators from the upper cross brace.

7. Place a clean rag under the planned cut point
and saw the old bracket in half and remove it.

8. While holding the bracket so that the right end
is higher than the left, insert the right end in the
vertical channel in the right side of the freezing
compartment.

Then, while the helper lifts the right-most
evaporator slightly, push the bracket in from
below. Keep doing this and push up on the left
end of the new bracket.

The freezing compartment walls may be pushed
apart slightly to make this easier.

9. Push up enough on the left end of the bracket
until it snaps into the vertical channel in the left
side of the freezing compartment.

July 1998

Page 41

Refrigerant

CME2006R

1. This ice machine uses R-404A or HP62 as a
refrigerant. It has several unique characteristics.

A. It is a near-azeotrope, and must be liquid
charged.

B. It must use polyol ester refrigerant oil, and that
oil is very water absorbent. The system must not
be open for more than 15 minutes.

C. An electronic leak detector capable of locating
HFC-134a type refrigerant must be used to locate
refrigerant leaks.

D. A special HFC type liquid line dryer must be
used.

E. When brazing, a dry nitrogen purge is required.
F. When evacuating, use of an electronic micron

gage is recommend. Evacuate to 300 microns.

Recovering the Refrigerant

Because of the check valves, liquid refrigerant
must be recovered thru the liquid line valve, as
well as the low side access valve at the front of the
machine.

Allen

Wrench

Torque Stem

to 6-8 ft. lb.

Torque Stem Cap

to 8-12 ft. lb.

Torque Core Cap

to 7-12 ft. lb.

Access Valve

Low Side Access Valve

Access Valves:

1. Low Side: Remove the stem cap and insert a
3/16" allen wrench. Check that the valve is closed.

Liquid Line: Remove the stem cap. Use a
refrigeration wrench and check that the valve stem
is fully UP or OUT. If recovering, remove the
schrader core before opening the valve.

2. Remove the port caps and attach refrigerant
manifold hoses.

3. Open the valves and purge the hoses. Note:
Open liquid line valve half way to access both
sides of the liquid line.

4. When service is complete, shut the liquid line
access valve first (fully up). Then, with the
machine running and the middle hose outlet
securely fastened to the manifold or refrigerant
tank (closed) open both manifold valves. This
allows any liquid refrigerant in the discharge hose
to flow thru the manifold and into the suction side.

5. After the gages have equaled, shut the

manifold valves and the suction access valve.

Stem Must Be

Half-way Out

(after hose is

connected) to

Recover,

Evacuate and

Recharge

6. Remove the gages and replace the stem and
port caps. Return the schrader core to the liquid
line valve. Make certain that all caps are on tightly.

July 1998

Page 42

Liquid Line Access Valve

Liquid Charging

Because R-404A is a near-azeotrope, only liquid
refrigerant can be used to recharge the
refrigeration system. To do that may take some
special techniques:

1. Use an electronic scale to measure the charge.

2. Place a drum or cylinder of R-404A on the
scale, valve side up (most R-404A disposable
cylinders have an internal dip tube and dispense
liquid refrigerant from the valve when it is upright ­check yours).

3. A refrigeration manifold should be attached to
the service access valves. Attach the charging
hose to the cylinder of R-404A. Open the
cylinder’s valve and purge the hose to the
manifold.

4. Close the low side service access valve.

5. Open the discharge side manifold valve and
weigh in the name plate charge. After the charge
is weighed in, wait a few minutes and re-check the
scale.

CME2006R

6. If all of the refrigerant charge has not been
weighed into the discharge side, it must be
carefully added thru the low side. Close the
discharge service access valve.

7. With a sight glass or charge faster in the hose
to the low side port, start the ice machine.

8. Open the low side service access valve.

9. Crack open the low side manifold valve and
watch the scale and sight glass. Open and close
the low side manifold valve to flow liquid into the
manifold but flash off to vapor before it enters the
suction side of the refrigeration system. This
should only be a few ounces at most.

10. After the scale = the correct charge, shut off
the valve on the refrigerant cylinder.

11. With the ice machine running and the
discharge access valve closed, open both
manifold valves to allow the refrigerant in the
hoses to enter the system.

12. Shut the suction service access valve.

13. Remove the refrigeration manifold gages.

14. Replace and tighten all caps.

July 1998

Page 43

CME2006R

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. Does the bin control have ice on it? If so, remove the ice and the machine
should start in a few minutes.

To Manually Reset the machine.

1. Remove the left front panel.

2. Locate the System Controller. If a red diagnostic light is glowing, note which
one and its blink rate. Then push and release the off button.

3. Push and release the Freeze button.

4. The machine should begin to operate. If
there is a lack of water it will soon shut off
again.

5. Return the front panel to its normal
position.

If the machine shuts down again, call for
service.

To Shut the Machine Off:

1. Remove the left front panel.

2. Locate the System Controller.

3. Push and hold the Off button for 3
seconds or until the machine stops.

89

7

PUSH BUTTON

6

5

4

3

2

1

System Controller

CONTROL SWITCHES

INDICATORLIGHTS:

BIN FULL

FREEZE

HARVEST
CLEAN

OFF

DIAGNOSTIC LIGHTS:

WATER
REFRIGERATION

July 1998

Page 44