Scotsman CME1056R User manual

Introduction
This product manual contains the information
needed for the setup, installation, initial start up,
sanitation and maintenance of this ice machine.
Keep it for future reference.
Be certain that the information applies to the model
in question. If no model is listed, the information
applies to all models.
This manual is organized in the same way as the
expected use of the machine, it begins with
specifications, goes thru unpacking and setup,
shows where everything is; continues with initial
start up, then describes how it works. After that is
the sanitation section, followed by service
diagnosis and repair.
May 2000
Page 1
CME1056R
TABLE OF CONTENTS
Specifications ,,,,,,,,,,,,,PAGE2
Condenser and Ice Machine Layouts , PAGE 3
Pre-Installation ,,,,,,,,,,,,,PAGE4
Location & Assembly ,,,,,,,,,PAGE5
Stacking ,,,,,,,,,,,,,,,,PAGE6
Stacking ,,,,,,,,,,,,,,,,PAGE7
Bin Control: Installation ,,,,,,,,PAGE8
For The Installer: Remote Condenser , PAGE 9
Remote Condenser Location ,,,,,PAGE10
Coupling Instructions ,,,,,,,,,PAGE11
Head Pressure Control Add-On Kit , , PAGE 12
Electrical ,,,,,,,,,,,,,,,,PAGE13
Plumbing ,,,,,,,,,,,,,,,,PAGE14
After Utility Connections ,,,,,,,,PAGE15
Component Location and Function , , PAGE 16
AutoIQ Controller ,,,,,,,,,,,PAGE17
Initial Start Up ,,,,,,,,,,,,,PAGE18
Adjustments ,,,,,,,,,,,,,,PAGE19
How To Operate The AutoIQ Controller PAGE 20
How The Electronic Cuber Works , , , PAGE 21
How The Electronic Cuber Works , , , PAGE 22
Technicians Only: Freeze Cycle Sequence
,,,,,,,,,,,,,,,,,,,,,PAGE23
Technicians Only: Harvest Cycle Sequence &
Other Notes ,,,,,,,,,,,,,,PAGE24
Sanitation and Cleaning ,,,,,,,,PAGE25
Additional Maintenance ,,,,,,,,PAGE26
Additional Maintenance: Inlet Water Valve Screen
,,,,,,,,,,,,,,,,,,,,,PAGE27
Additional Maintenance: Ice Sensors, Condenser
,,,,,,,,,,,,,,,,,,,,,PAGE28
Service Diagnosis: Diagnostic Light Analysis
,,,,,,,,,,,,,,,,,,,,,PAGE29
Service Diagnosis ,,,,,,,,,,,PAGE30
Service Diagnosis: Components,,,,PAGE31
Service Diagnosis ,,,,,,,,,,,PAGE32
PTCR Diagnosis ,,,,,,,,,,,,PAGE33
Operational Characteristics: CME1056R
,,,,,,,,,,,,,,,,,,,,,PAGE34
Removal and Replacement ,,,,,,PAGE35
Removal and Replacement ,,,,,,PAGE36
Removal and Replacement: AutoIQ Controller
,,,,,,,,,,,,,,,,,,,,,PAGE37
Removal and Replacement: Water Level Sensor
,,,,,,,,,,,,,,,,,,,,,PAGE38
Removal and Replacement ,,,,,,PAGE39
Refrigerant ,,,,,,,,,,,,,,,PAGE40
Before Calling for Service ,,,,,,,PAGE41
Parts Lists and Wiring Diagrams are in the section at the center of this manual.

Specifications
Both of these ice machines are designed to be
installed indoors, in a controlled environment. They
can operate satisfactorily under a wide variety of
conditions. However, Do NOT operate the
machine in temperatures it has not been designed
for. Do NOT operate the machine above or below
the voltage limits for the particular model. Do NOT
operate the machine with too little or too much
water pressure.
Operational Limits
Minimum Maximum
Air Temperature 50oF. 100oF.
Water Temperature 40oF. 100oF.
Water Pressure 20 psi 80 psi
Voltage (60 Hz) 197 253
Voltage (50 Hz) 207 253
Scotsman reserves the right to make design
changes and/or improvements at any time.
Specifications and designs are subject to change
without notice.
Scotsman assumes no liability or responsibility of
any kind for products manufactured by Scotsman
that have been altered in any way, including the
use of any parts and/or other components not
specifically approved by Scotsman.
Bins:
All models will fit a standard, 30" wide or wider
open top Scotsman Ice Storage Bin. Some
examples are:
•BH550
•HTB555
Dispensers
•ID200 or ID250, use adapter KBT44
•Lancer 30” wide dispenser. Add adapter kit
KSTAT-MD.
Kits
•BH800 bin: Add kits KBT23
•BH900 bin: Add kits KBT22
In addition, there may be other bins and
dispensers that can be used, check Scotsman’s
sales literature for application information.
Stacking
•Stacking two CME1056s together requires
use of stacking kit KSCME6-MD
Precharged Tubing:
•25’ RTE25
•40’ RTE40
•75’ RTE75
Headmaster Kit:
•The kit required to connect this ice machine
to an approved central condenser is:
RCKCME6GX.
CME1056R
March 2003
Page 2
Model Number
Dimensions
WxDxH
(w/o bin)
Basic Electrical
(volts/Hz/phase)
Use
Condenser
Refrigerant
Charge
R-404A
Minimum
Circuit
Ampacity
Maximum
Fuse Size
CME1056RS-32D 30½“x24"x28 208-230/60/1 ECR311-32A 208 oz 17.25 20
CME1056RS-3D same 208-230/60/3 ECR311-32A 208 oz 12.13 15
CME1056RS-6D same 230/50/1 ERC311-32A 208 oz
* The remote condenser is designed to work in temperatures from -20oF. to 120oF.
Use precharged tubing kits, RTE25 (25’) or RTE40 (40’) or RTE75 (75’). Select the length closest to the
needs of the particular installation.
BASIC INFORMATION

CME1056R
May 2000
Page 3
Condenser and Ice Machine Layouts
.88 DIA. ELECTRICAL
INLET
.65 in
1.7 cm
27.56 in
70.0 cm
2.84 in
7.2 cm
AIR FLOW
.562 DIA.
MOUNTING
HOLES (4)
CONDENSER FINS
23.54 in
59.7 cm
LIQUID LINE
3/8" MALE CPLG.
DISCHARGE LINE
1/2" MALE CPLG.
14.56 in
36.9 cm
7.60 in
19.3 cm
29.19 in
74.1 cm
24.71 in
62.7 cm
28.07 in
71.2 cm
29.50 in
74.9 cm
38.47 in
97.7 cm
35.72 in
90.7 cm
2.75
29.15 in
74.0 cm
32.32 in
82.1 cm
11.50 in
29.2 cm
15-0782-01CANCAUSE INJURY OR DEATH:DISCONNECTALL REMOTE ELECTRICPOWERSUPPLIES BEFORE SERVICING.RISKOF ELECTRIC SHOCK^MWARNING
ERC311
19.90 in
50.5 cm
15.75 in
40.0 cm
SUMP DRAIN
3/4" F.P.T.
10.75 in
27.3 cm
22.25 in
56.5 cm
20.12 in
51.1 cm
4.75 in
12.1 cm
2.38 in
6.0 cm
21.75 in
55.2 cm
22.15 in
56.3 cm
4.31 in.
10.9 cm
17.68 in
44.9 cm
WATER INLET
3/8" FLARE
.88 DIA. KNOCKOUT
REMOTE CONDENSER FAN
.88 DIA. KNOCKOUT
ELECTRICAL INLET
REMOTE CONDENSER
LIQUID LINE
3/8" MALE CPLG.
REMOTE CONDENSER
DISCHARGE LINE
1/2" MALE CPLG.
BACK VIEW
SIDE VIEW
24.00 in
61.0 cm
9.85 in
25.0 cm
MINIMUM FOR
UTILITY CONNECTIONS
ICE
OPENING
ICE
OPENING
1.63 in
4.1 cm
18.70 in
47.5 cm
6.00 in
15.2 cm
2.70 in
6.9 cm
PLAN VIEW

Pre-Installation
Other Applications:
Check sales literature for additional information.
Note: Slope-front bins must have an internal baffle.
Scotsman HTB555 and BH550 have the required
baffle. Baffle must be approximately in the position
shown in the diagram below.
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 front
panel and to the right
of the purge valve.
Water:
There is no such thing as pure water. All water
contains some impurities. There are two ways
water carries the impurities: suspended and
dissolved. Suspended solids can be filtered out.
Dissolved solids must be diluted or treated. Water
filters are recommended to remove suspended
solids. Some filters also have treatment in them for
dissolved solids. Check with a water treatment
service for a recommendation.
Cube Ice machines use more water than what
ends up in the bin as ice. While most water is used
during ice making, a portion is designed to “rinse"
out the water system to keep hard water scale
from clogging up the machine. That water rinse,
combined with water filters, prolongs the times
between needed water system cleaning.
Service Technicians: All models covered here
come set from the factory with at a “Standard”
water rinse. Standard water rinse is designed to be
compatible with typical water conditions. The
machine may be adjusted to a different water rinse
after start up. If the prior ice machine worked
acceptably well with the local water conditions,
leave the machine at the factory setting. If severe
water conditions are present, and water filters do
not solve the problem acceptably, adjust the
machine to use more water. If water conditions are
excellent, adjust the machine to use less water.
See the Adjustments section.
Note: Water use adjustments are customer
convenience adjustments; they are NOT factory
defects and are NOT covered by warranty.
CME1056R
May 2000
Page 4
Nameplate, on back panel
Serial Number Plate, remove front
panel to locate.
12.0"
4.0"
Side View
Baffle

Location & Assembly
Locate the ice machine indoors. A 6 inch minimum
clearance on the back and sides is required for the
proper operation and service of this machine.
Locate the remote condenser as close as possible
to the ice machine. See page 11 for details.
Unpacking and Assembly:
Begin with unpacking the ice storage bin. Remove
the carton, and using part of the carton as a
cushion, tip the bin on its back to remove the skid
and attach the legs or casters. Note: Stacked
applications may not use casters.
Return the bin to an upright position. Check the bin
top gasket for gaps and tears, fill any in with food
grade sealant prior to placing the ice machine on
the bin.
Note: If recycling a prior bin, be sure that the bin
top gasket is in good condition or seal the ice
machine to the bin with food grade sealant.
Level the top edge of the bin front to back and left
to right.
If the ice machine has not been unpacked, do so
now. Remove the carton from the skid. Remove
shipping straps.
Remove the front panels and all packaging
materials.
After all packing materials have been removed
from the ice machine, lift or hoist the machine onto
the bin. Align the sides and back of the machine
with the sides and back of the bin.
Secure the ice machine to the bin with the two
metal straps and 4 bolts provided.
Cabinet Panel Removal:
1. Remove the front panel by removing the two
screws connecting the top of the front panel to the
machine, then pull out at the bottom.
2. Lift up at the front edge and push the top panel
back until it releases from the tabs connecting it to
the 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.
CME1056R
May 2000
Page 5

Stacking
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.
Bottom Machine:
1. Remove front, side, and top panels.
2. Hang the plastic shield from the tabs on the
stainless steel bracket.
3. Locate the two notches on the sides of the top
edge of the freezing compartment.
4. Place the bracket over the notches of the
freezing compartment.
5. Secure bracket to freezing compartment with
screws from the kit (from the sides).
6. Locate gasket material in kit. Place a layer of
gasket material on the top edge of the plastic
freezing compartment.
7. Place the top ice machine onto the bottom one.
Secure together with hardware from the top
machine. Remove front and left side panels.
Upper Machine:
8. Knock out 1 hole in the lower left (viewed from
the front) corner of the upper unit’s back panel.
Lower Unit:
9. Knock out 1 hole in the upper left (viewed from
the front) corner of the lower unit’s back panel.
10. Position the strain reliefs over the wrapped
portion of the stacking kit wire harness.
11. Route the Stacking Kit wire harness from the
back to the top and bottom machines thru the
holes made in steps 8 and 9.
The harness is marked which end goes to which
machine.
Push the strain reliefs into place from the back of
the machines.
Follow local codes for 24 volt wire
12. Route wire harness in lower ice machine to the
controller. Connect to terminal #7. Plug the two
free wires onto thermostat terminals #1 and #2
CME1056R
December 1998
Page 6
Bracket
Mounting
Notch
Bin
Thermostat
Mounted in
Machine

13. Route the wire to the controller. Connect to
terminal 7.
Bottom Machine
14. Route the bulb of the thermostat thru the base
of the unit into the bin.
15. Mount the bulb of the thermostat to the
bracket from the kit.
16. Install the bin thermostat bracket onto the
bottom of the machine.
17. Pull back excess cap tube and coil up in the
machine.
18. Connect wires from harness to thermostat
terminals.
Both Machines:
19. Return all panels and covers to their normal
positions.
20. Complete the balance of the installation.
CME1056R
May 2000
Page 7
Stacking
Thermostat
Routing
Hole
Thermostat
Bulb
Thermostat &
Bracket
Mounted to
Ice Machine
Base

Bin Control: Installation
The bin control is a thermostat. It must be field
installed after the ice machine has been placed on
the bin.
Before starting, remove the front panel and any
baffle in the bin.
1. Locate bin thermostat bulb.
3. Route bulb thru routing tube (located between
the compressor and the reservoir).
4. Locate bin thermostat bracket.
5. Carefully position the thermostat bulb on the
bracket.
6. Fasten the bracket to the bottom of the ice
machine with the two 3-pronged knobs supplied
with the unit.
7. Pull back into the ice machine any excess
capillary tubing.
8. 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.
CME1056R
May 2000
Page 8
Bin Thermostat Altitude Correction Table
CW Turns of Range Screw (under plastic cover)
Feet Turns Feet Turns
2000 55o8000 340o
4000 160o9000 385o
6000 250o10000 405o
Use This Table to Adjust Thermostat

For The Installer: Remote Condenser
Locate the condenser as near as possible to the
interior location of the ice maker.
Note: The location of the condenser relative to the
ice machine is LIMITED by the specification on the
following page.
Select the best available location, one that protects
the condenser from extremes of dust, grease and
sun.
Meet all applicable building codes.
Roof Attachment
Install and attach the remote condenser to the roof
of the building, using the methods and practices of
construction that conform to the local building
codes, including having a roofing contractor secure
the condenser to the roof.
Note: If using any other condenser
besides the ERC311, its use must be
approved by Scotsman, and a head
pressure control valve must be
connected to the condenser coil. The
head pressure valve kit number is:
RCKCME6
Precharged Line Routing
Do not connect the precharged tubing
until all routing and forming of the tubing
is complete. See the Coupling
Instructions for final connections.
1. Each set of pre-charged tubing lines
contains a 38“ diameter liquid line, and a
12” diameter discharge line. Both ends of
each line have quick connect couplings,
the end without access valves goes to
the ice maker.
Note: The openings in the building ceiling
or wall, listed in the next step, are the
minimum sizes recommended for
passing the refrigerant lines through.
2. Have the roofing contractor cut a
minimum hole for the refrigerant lines of
2“. Check local codes, a separate hole
may be required for the electrical power
supply to the condenser.
Caution: Do NOT kink the refrigerant
tubing while routing it.
3. Route the refrigerant tubes thru the
roof opening. Follow straight line routing
whenever possible.
Note: Excess tubing may EITHER be coiled up
INSIDE the building OR cut out prior to connection
to the ice maker and condenser.
If the excess tubing is cut out, after re-brazing the
tubing must be evacuated prior to connection to
the ice maker or condenser.
If the excess tubing is to be coiled, spiral it
horizontally to avoid excess trapping in the lines.
Note: A 36" service loop may be placed behind the
ice machine.
5. Have the roofing contractor seal the holes in the
roof per local codes.
CME1056R
May 2000
Page 9
ERC311 Remote
Condenser
Electrical Power
Supply
Coil Excess
Tubing
Horizontally
Within the
Building
Typical Installation

CME1056R
May 2000
Page 10
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"
40.35"
hd
rd
dd
Remote
Condenser
Located ABOVE
Ice Machine
Remote
Condenser
Located BELOW
Ice Machine
Condenser Distance &
Location Schematic
Max 35’
Max 15’

Coupling Instructions
The couplings on the ends of the pre-charged line
sets are self-sealing when installed properly.
Follow these instructions carefully.
These steps must be performed by an EPA
Certified Type II or higher technician.
Initial Connections
1. Remove the protector caps and plugs. Wipe the
seats and threaded surfaces with a clean cloth to
remove any possible foreign matter.
2. Thoroughly lubricate the threads, o-rings,
diaphragms and all internal coupling surfaces with
polyolester refrigerant oil.
3. Position the fittings on the correct connections
on the condenser and ice machine.
•The 12“ discharge line (schrader valve end)
goes to the remote condenser fitting marked
“discharge line”.
•The 38“ liquid line (schrod valve end) goes to
the remote condenser fitting marked “liquid
line”.
•The 12“ discharge line goes to the ice maker
fitting marked “discharge line”.
•The 38“ liquid line goes to the ice maker
fitting marked “liquid line”.
Final Connections:
4a. Begin to tighten the couplings together by
hand. Continue to turn the swivel nuts by hand
until it is certain that the threads are properly
engaged.
4b. Using two wrenches, one to rotate the swivel
nut and one to hold the tubing in place, tighten
each coupling.
It is CRITICAL that ONLY the NUT on the
pre-charged tube be turned, or the diaphragms will
be torn by the piercing knives and become loose in
the refrigeration system causing severe
operational problems.
Note: As the coupling is tightened, the diaphragms
in the quick connect couplings will begin to be
pierced. As that happens, there will be increased
resistance to tightening the swivel nut.
4c. Continue tightening the swivel nut until it
bottoms out or a very definite increase in
resistance is felt (no threads should be showing).
Do NOT overtighten.
5. Use a marker or pen to mark a line on the
coupling nut and unit panel. Then tighten the
coupling nut an additional one-quarter turn. The
line will show the amount that the nut turns.
6. After all connections have been made, and after
the liquid line valve has been opened (do not open
yet), check the couplings for leaks.
CME1056R
May 2000
Page 11
Clean and Lubricate Couplings
Tighten Swivel Nut
Rotate Swivel Nut ¼ Turn More
Note: The system charge is contained in the
receiver tank of the ice machine. Only “holding"
charges are present in the “pre-charged" tubing or
the condenser.

CME1056R
March 2003
Page 12
Head Pressure Control Add-On Kit
Kit: RCKCME6GX
Required when a CME1056R is to be connected to
a Remote Condenser that is not equipped with a
Head Pressure Control Valve
Required Tools: Screwdriver; Drill; 5/32" drill bit;
Two Adjustable Wrenches; POE Oil
1. Remove cover from metal box.
2. Locate correct position on condenser: The
RCKCME6GX can fit either a Mac G series or a
Mac X series condenser.
3. Use metal box as a template, mark the positions
of 4 holes to be drilled to mount the box to the
condenser.
4. Drill four .157" (#22 or 5/32" bit) dia. holes.
5. Remove plastic covers from the condenser’s
quick connects and those to be used to connect to
the condenser.
6. Thoroughly clean and lubricate the threads and
diaphragms of both the condenser’s and the kit’s
quick connects. Use Polyolester oil.
7. Mount the box to the condenser with the screws
from the kit.
8. Start the swivel nuts by hand.
•Use a back up wrench to be certain that the
tubing is NOT ROTATING. Only the SWIVEL
NUTS should be rotating!
•Then use an adjustable wrench to tighten
them until no threads are seen AND a very
definite resistance is felt.
9. Mark the positions of the swivel nuts to the
condenser panel.
10. Rotate the swivel nuts additional one-quarter
turn.
11. Place cover on metal box & secure with
screws.
12. Finish the balance of the installation. Ice
machine’s precharged line sets will now connect to
the quick connect fittings on the metal box instead
of the condenser’s.
Central
Condenser
Connections
to Central
Condenser
Pre-Charged Lines
from Ice Machine
connect here
RCKCME6GX
on G series
RCKCME6GX
on X series

Electrical
All models must be installed with the correct wire
size and type per the National Electric Code.
Locate the nameplate on the back of the cabinet
and find the numbers for Voltage, Phase, Minimum
Circuit Ampacity and Maximum Fuse Size. Either
fuses or HACR type circuit breakers may be used.
The ice maker is designed to operate on its own
electrical circuit and must be individually fused.
Voltage variation must not exceed the limits listed
on page 2.
The remote condenser is designed to be powered
from the ice machine. A separate knockout hole
has been provided in the ice maker electrical
junction box.
Note: Central Condensers connected to more than
one refrigeration system will likely have a wiring
scheme to control the fan motor. Follow those
directions for condenser wiring.
Electrical connections are made in the junction box
in the back of the cabinet.
1. Remove the junction box cover.
2. Knock out both holes for a field supplied strain
relief.
Note: An external junction box may be mounted to
the back of the machine. Holes are pre-drilled for a
open back box such as Scotsman part number
12-2374-01.
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.
CME1056R
May 2000
Page 13
Remote Condenser
Power Connection
Power OUT
Power
Supply
Power IN
Interconnecting
Wires

Plumbing
CME1056R
May 2000
Page 14
All models require an adequate potable water
supply and a gravity drain. The recommendations
for tubing are:
•Water supply to be 38" OD.
•Drain to be 34" OD.
Note: When replacing a prior ice machine, do not
take a short cut and reuse the old inlet and drain
system. INSTALL A NEW SYSTEM.
Supply:
All models have 1 water supply connection, a 38"
male flare at the back of the cabinet. Connect to
cold potable water that has adequate pressure.
Note: Using water supply tubing smaller than 38"
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 34"
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
Water IN
Water Inlet
System
Water OUT
Bin 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. Switch on the electrical power. Do not start the
machine for 4 hours.
4. Go thru the final check list (below).
Final Check List:
___ 1. Is the unit located indoors in a
controlled environment?
___ 2. Has the correct remote condenser been
properly located and mounted?
___ 3. Has the correct electrical power
(voltage and phase) been supplied to
the machine?
___ 4. Have all the water supply connections
been properly made with the correct
size tubing?
___ 5. Have all the drain connections been
properly made?
___ 6. Has the unit been leveled? Level the
unit at the bin.
___ 7. Have all unpacking materials been
removed?
___ 8. Is the water pressure adequate?
___ 9. Is the machine secured to the ice
storage bin?
___ 10. Is the bin control system been properly
installed?
___ 11. Have the drain connections been
checked for leaks?
___ 12. Has the bin interior been wiped clean or
sanitized?
___ 13. Have any water filter cartridges been
replaced?
___ 14. Check all refrigerant lines and conduit
lines, for vibration or rubbing and
possible failure. Adjust as needed.
___ 15. After 4 hours of electrical power,
proceed to Initial Start Up.
CME1056R
May 2000
Page 15

Component Location and Function
Reservoir: Contains the water used to make ice.
Water Inlet Valve: Opens to allow water into the
reservoir.
Freezing Compartment: Location of the
evaporators. Ice forms on the evaporators, and is
released when warmed up during the harvest
cycle. The freezing compartment is fully insulated
for maximum efficiency.
Cube 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 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.
CME1056R
May 2000
Page 16
Freezing
Compartment
Inlet Water Valve
Evaporators
Purge Valve
Controller

AutoIQ Controller
Indicator Lights:
•Bin Full: On when bin is full, goes on and
off as ice falls during a harvest cycle.
•Freeze: On when the unit is in the Freeze
cycle, blinks when a freeze cycle is pending.
•Harvest: On when the unit is in the Harvest
cycle.
•Clean: On when the unit is in the Clean
cycle.
•Off: On when the unit has been switched off,
blinks when the machine is preparing to shut
off.
•Water: On when the controller has identified
a problem with the water system.
•Refrigeration: On when the controller has
identified a problem with the refrigeration
system.
Cycle Definitions:
•Freeze: The refrigeration system is
operating to remove heat from the
evaporators. The compressor, remote fan
motor and water pump are ON.
•Harvest: The refrigeration and water
systems are operating to harvest the ice
cubes. While the compressor and fan motors
are on for the full cycle, the water pump will
be off at the beginning and the inlet water
valve will switch off before the end.
•Clean: Water valve opens to fill the
reservoir. The Water pump starts. The Clean
indicator light is switched ON. A manually
initiated rinse cycle flushes the system.
CME1056R
May 2000
Page 17
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BIN FULL
FREEZE
HARVEST
CLEAN
OFF
WATER
REFRIGERATION
RESERVOIR WATER
LEVEL SENSOR
ICE SENSOR
ICE SENSOR
RESERVOIR & DISCHARGE
LINE THERMISTORS
LOW VOLTAGE IN/OUT
WATER VALVE
HOT GAS VALVE
PURGE VALVE TIMER
CONTACTOR COIL
STACKING and/or
THERMOSTAT
FUTURE USE
FACTORY USE
PUSH BUTTON
CONTROL SWITCHES
HI VOLTAGE IN/OUT
WATER PUMP
INDICATOR LIGHTS:
DIAGNOSTIC LIGHTS:

Initial Start Up
1. Remove the front panel.
2. Locate and open the liquid line valve.
3. Double check quick-connect couplings for leaks.
4. Locate the AutoIQ Controller.
5. Connect electrical power. All lights will blink on
and off together then the two red lights will blink
while the Harvest light is on. After 20 seconds the
Harvest light will go out and the Bin Full and Off
lights will be on. After a few seconds only the Off
light will be glowing.
6. Open the water supply valve.
7. Push and release the Freeze cycle push button
(the Freeze indicator light will blink until the
compressor starts).
Initial Start (30 seconds)
•The Freeze light will begin to blink.
•The hot gas solenoid valve will be open.
•The purge valve will be open
•The water pump will be on
•After 30 seconds, the hot gas valve closes
•The purge valve closes and the inlet water
valve opens to fill the reservoir. The inlet
water valve closes when the reservoir is full.
•The compressor & remote fan motor start.
Freeze Cycle
The Freeze indicator light will come on. The unit
will be in a Freeze cycle for many minutes. Slush
may appear in the reservoir, it is temporary and
normal.
•The pump will stop for a few seconds a few
minutes into the freeze cycle
•The freeze cycle will continue until the water
level in the reservoir drops to its factory set
point, the first time that happens the water
valve will re-fill the reservoir. The second
time it happens in a freeze cycle starts the
Harvest Cycle.
Harvest Cycle:
•The Harvest indicator light will be ON,
•The hot gas valve will open.
•The purge valve will be open for 40 seconds.
•The water pump will switch off. The pump
will restart part way thru the harvest cycle.
•The purge valve closes.
•The Inlet water valve opens for a short time
•The Bin Full indicator light will go on and off
as ice falls from the evaporators.
8. Machines are shipped from the factory with the
purge level set to accommodate average water
conditions. To achieve optimal machine
performance, set the purge level to the minimum
setting.
Note: While the amount of water purge is
adjustable, only those installations with a water
supply known to be excellent (very low TDS)
should adjust to the minimum setting. See the next
page for purge adjustment procedures.
9. After about 6 minutes (first cycle after any
restart) the machine will return to a freeze cycle.
Note: After the first harvest, the controller adjusts
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.
12. Return all panels to their normal positions.
13. Inform the user of the location and telephone
number of the local service company. Inform the
user of the required maintenance of the machine.
Operational Notes:
1. The machine will only shut off on Bin Full at the
end of the Harvest Cycle after the bin fills. That
last harvest cycle will be about 6 minutes long.
2. After switching off on Bin Full, if ice is removed
from the bin, the machine will not restart until it has
been off for 4 minutes. If the Freeze button is
pushed, the machine will restart immediately.
3. If the bin controls sense a bin full signal before
any water is used (float stem up), the machine will
shut off on bin full.
4. When shutting off, the compressor will run for 30
seconds (everything else will be off) and then
switch off.
CME1056R
March 2003
Page 18
Open By Turning
Stem Fully Out (Up)

Adjustments
If there was a problem during Initial Start
Up:
If a diagnostic light came on, check the following.
1. Water.
A water error could have been determined by the
AutoIQ Controller if the inlet water valve does not
fill the reservoir or if the water pump does not start
and lower the water level in the reservoir. If either
condition is found, the water error light will be
switched on and the machine will Shut Down.
2. Refrigeration.
A refrigeration error could have been determined
by the AutoIQ Controller if the water temperature
did not drop during the freeze cycle. The
Controller will next check the compressor
discharge temperature. If the discharge
temperature is too low, the refrigerant error light
will be switched on, and the machine will Shut
Down.
Note: The machine can be reset and restarted by
pushing and releasing the Off push button switch,
and then pushing and releasing the freeze push
button switch.
Thermostatic Expansion Valve:
The TXV is not adjustable, do not attempt to adjust
it.
How to Adjust the Amount of Water Purge
Adjustment is done by use of the control buttons
on the AutoIQ Controller. Examine the next section
to become familiar with the AutoIQ Controller
before beginning.
1. If the machine is on, push and hold the OFF
button for more than 3 seconds, then release it.
This switches the machine Off.
2. Push and hold the OFF button for more than 3
seconds (just until all Lights flash on) then release
it. Do not hold it in it too long.
3. Examine the green Lights. They should have all
flashed once, then certain ones will have turned on
to indicate which purge level the machine is set at.
There are 5 levels of purge available:
•1. Maximum Purge is when All 5 lights are
ON. Use for extreme water conditions. Note:
This setting may extend the Harvest cycle
and reduce capacity.
•2. Heavy Purge is when these 4lights 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 3lights are ON: Harvest, Clean,Off.
Use for typical water conditions.
•4. Moderate Purge is when these 2lights
are ON: Clean,Off. This is for good water
conditions.
•5. Minimum Purge is when this light is ON:
Off. For excellent water conditions.
Adjust by pushing and releasing the Freeze button.
Pushing and releasing the Freeze button increases
the purge one level up to the maximum, then it
goes to the minimum.
4. The machine will automatically restart after 60
seconds of no switch inputs, or restart the machine
by pushing in and holding the Off button for more
than 3 seconds, then releasing it. The unit will then
be Off. From there the machine may be placed in a
freeze cycle by pushing and releasing the Freeze
button.
CME1056R
May 2000
Page 19

How To Operate The AutoIQ Controller
The AutoIQ Controller is a microprocessor based
device that receives input from several sources
and switches various components on and off.
Its manual control is thru the use of the Push
Button Control Switches
1. Freeze Button. Pushing and releasing this
button starts or restarts the machine. The AutoIQ
Controller remembers what cycle it was last in and
returns to that cycle.
2. Harvest Button: Pushing and releasing this
button will cause the machine to go directly to a
Harvest Cycle. Can be done from Freeze or Off.
The machine will switch Off at the end of the
Harvest cycle.
3. Clean Button: Pushing and releasing this
button will cause the machine to empty the
reservoir, refill and leave only the water pump on
for circulation of ice machine cleaner. After the ice
machine cleaner has circulated for about 10
minutes a second push of this button will switch on
the rinsing system to flush out the dissolved scale
and ice machine cleaner.
4. Off Button: Pushing and releasing this button
will switch the machine OFF at the end of the next
cycle. If the button is pushed and HELD for more
than 3 seconds, the unit will switch off
immediately.
To Reset: First push and release the Off button,
then push and release the Freeze button.
Diagnostic Light Recall
To recall the last error on the blue housing CM3
controller:
1. Switch the unit OFF by holding the OFF button
for longer than 3 seconds.
2. Hold the Off button down again until the Purge
Setting indicators (Green Lights) are on.
3. Push and release the Harvest button.
The last error code stored in the controller will be
displayed and the purge setting will disappear.
Push the Harvest button again and the
second-to-last error code will be displayed. The bin
full light will also be on to signal that this is the
second-to-last code.
Pushing the Harvest button again will display the
last error code again. Only two error codes are
available for display.
If no error code exists, no code will be displayed
and there will be NO LIGHTS showing.
To return from the display of the last error, do
nothing for 60 seconds or push and hold the Off
button.
After returning from the display of the last error
(Off light glows), the machine may be returned to
the ice making process by pushing and releasing
the Freeze button.
CME1056R
March 2003
Page 20
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BIN FULL
FREEZE
HARVEST
CLEAN
OFF
WATER
REFRIGERATION
PUSH BUTTON
CONTROL SWITCHES
INDICATOR LIGHTS:
DIAGNOSTIC LIGHTS: