Scotsman CME306 Operator’s Manual
INTRODUCTION
CME306 & CME456
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.
TABLE OF CONTENTS
Specifications ·············PAGE2
Air Cooled Layout ···········PAGE3
Water Cooled Layout ·········PAGE4
Pre-Installation ·············PAGE5
Location ················PAGE6
OnaBin················PAGE7
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.
CM Cubed™ Cuber Performance Raised
to a Higher Power.™
™
Technicians Only: Freeze Cycle Operational
Sequence ···············PAGE23
Technicians Only: Harvest Cycle Operational
Sequence ···············PAGE24
Sanitation and Cleaning ········PAGE25
Additional Maintenance ········PAGE26
Additional Maintenance: Ice Sensors · PAGE 27
On a Beverage Dispenser ·······PAGE8
On a Motel Dispenser ·········PAGE9
Cabinet Panel Removal: ········PAGE10
Bin Thermostat: Optional Installation · PAGE 11
Plumbing - Air Cooled ·········PAGE12
Plumbing - Water Cooled ·······PAGE13
Electrical ················PAGE14
After Utility Connections ········PAGE15
Component Description and Function · PAGE 16
AutoIQ Controller ···········PAGE17
How To Operate The AutoIQ Controller PAGE 18
Initial Start Up ·············PAGE19
Adjustments ··············PAGE20
Additional Maintenance: Air Filter Replacement
·····················PAGE29
Additional Maintenance: Condenser · · PAGE 30
Service Diagnosis: Controller Diagnostic Light
Analysis ················PAGE31
Service Diagnosis ···········PAGE32
Service Diagnosis: Components····PAGE33
Service Diagnosis: PTCR ·······PAGE34
Operational Characteristics: CME306 · PAGE 35
Operational Characteristics: CME456 · PAGE 36
Removal and Replacement: Water Level Sensor
·····················PAGE37
Removal and Replacement: Fan Blade and/or Fan
Motor··················PAGE38
Refrigeration ··············PAGE39
How This Machine Works ·······PAGE21
How This Machine Works ·······PAGE22
Parts Lists and Wiring Diagrams are Located in the Center of this Manual
January 2000
Page 1
Before Calling for Service ·······PAGE40
CME306 & CME456
Specifications
This ice machine is designed to be installed
indoors, in a controlled environment. It will operate
satisfactorily under a wide variety of conditions. Do
NOT operate the machine in temperatures it has
not been designed for. Do NOT operate the
machine above or below the voltage limits for the
particular model. Do NOT operate the machine
with too little or too much water pressure.
Operational Limits
Minimum Maximum
Air Temperature 50oF. 100oF.
Water Temperature 40oF. 100oF.
Water Pressure 20 psi 80 psi
Voltage (115 volt models) 104 126
Voltage (208-230 v models) 198 253
Voltage (50 Hz models) 207 253
Inlet water flow required is 1.25 GPM.
All models will fit a standard, 22" wide Scotsman
Ice Storage Bin such as the BH360.
Note: Slope front bins may need an internal baffle.
Scotsman’s BH360 has the required baffle. Baffle
must be approximately in the position shown in the
diagram on page 5.
Basic Information
Note: The ice machine will hang over the back of
the Lancer dispensers shown in the following list.
In addition, there may be other bins that can be
used, check Scotsman’s sales literature for
application information.
Note: This unit may not be stacked.
Bin and Dispenser Applications & Kits:
BH360 bin: Direct Fit
•
HD22 dispenser: Direct Fit.
•
ID150, add adapter kit KBT42
•
ID200 or 250, add adapter kit KBT43
•
Lancer 22” wide model: Add kit A37693-021.
•
Lancer 30” wide model: Add kit KLD22-30.
•
HTB555 - Add bin top kit KBT27
•
Bin’s with short/no baffle require thermostat
•
kit: KSTAT-22.
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.
Dimensions
Model Number Series
CME306AS-1 A, B or C 22 x 24 x 28 115/60/1 Air Cooled 16 20 23 ounces
CME306AS-32 A, B or C same 208-230/60/1 Air Cooled 7.9 15 23 ounces
CME306AS-6 A, B or C same 230/50/1 Air Cooled 15 15 23 ounces
CME306WS-1 A same 115/60/1 Water Cooled 16 20 15 ounces
CME306WS-32 B or C same 208-230/60/1 Water Cooled 7.4 15 13 ounces
CME306WS-6 A same 230/50/1 Water Cooled 15 15 15 ounces
CME306WS-1 B or C same 115-60/1 Water Cooled 16 20 13 ounces
CME306WS-1 B or C same 230/50/1 Water Cooled 15 15 13 ounces
CME456AS-1 A, B or C same 115/60/1 Air Cooled 19 20 24 ounces
CME456AS-32 A, B or C same 208-230/60/1 Air Cooled 9.8 15 24 ounces
CME456WS-1 A same 115/60/1 Water Cooled 19 20 17 ounces
CME456WS-1 B or C same 115/60/1 Water Cooled 19 20 14 ounces
CME456WS-32 B or C same 208-230/60/1 Water Cooled 9.2 15 14 ounces
CME456AS-6 A, B or C same 230/50/1 Air Cooled 7.9 15 24 ounces
CME456WS-6 A same 230/50/1 Water Cooled 7.1 15 17 ounces
CME456WS-6 B or C same 230/50/1 Water Cooled 7.1 15 14 ounces
W"xD"xH"
(w/o bin)
Basic
Electrical
Condenser
Type
Minimum
Circuit
Ampacity
Max
Fuse*
Size
Refrigerant
Charge
(R-404A)
* Or HACR circuit breakers.
May 2004
Page 2
Air Cooled Layout
CME306 & CME456
Bin Stat
Thru Hole
12.88 in
32.7 cm
3.75 in
9.5 cm
Bin Stat
Bracket
Mounting
Holes
8.75 in
22.2 cm
Plan View
22.00 in
55.9 cm
11.38 in
28.9 cm
1.25 in
3.2 cm
2.63 in
6.7 cm
4.00 in
10.2 cm
1.75 in
4.4 cm
16.7 in
42.4 cm
3.72 in
9.5 cm
SUMP DRAIN
3/4" F.P.T.
Ice Opening
BACK VIEW
4.24 in
10.8 cm
3.16 in
8.0 cm
AIR COOLED
CONDENSER
.88 DIA. HOLE
ELECTRICAL INLET
WATER INLET
3/8" FLARE
6.22 in
15.8 cm
6.40 in
16.3 cm
9.15 in
23.2 cm
January 2000
Page 3
CME306 & CME456
Water Cooled Layout
Bin Stat
Thru Hole
12.88 in
32.7 cm
3.75 in
9.5 cm
Bin Stat
Bracket
Mounting
Holes
8.75 in
22.2 cm
Plan View
22.00 in
55.9 cm
11.38 in
28.9 cm
1.25 in
3.2 cm
2.63 in
6.7 cm
4.00 in
10.2 cm
1.75 in
4.4 cm
16.7 in
42.4 cm
7.39 in
18.8 cm
4.54 in
11.5 cm
.88 DIA. HOLE
ELECTRICAL INLET
BACK VIEW
SUMP DRAIN
3/4" F.P.T.
Ice Opening
CONDENSER INLET
3/8" F.P.T.
4.92 in
12.5 cm
17.17 in
43.6 cm
1.43 in
3.6 cm
WATER INLET
3/8" FLARE
CONDENSER DRAIN
1/2" F.P.T.
19.99 in
50.8 cm
24.02 in
61.0 cm
2.93 in
7.4 cm
6.60 in
16.8 cm
January 2000
Page 4
Pre-Installation
Other Applications:
Check Scotsman sales information for
recommendations regarding applications.
Do not place Air Cooled models where the noise
from the fan(s) will be objectionable.
Check the nameplate for electrical requirements.
The nameplate is located on the back of the ice
machine. While the model and serial number are
on the nameplate, a serial number plate is
located at the front of the machine, near the
controller.
Water:
There is no such thing as pure water. 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.
3
Note: All Scotsman CM
described in this manual, feature Scotsman’s
AutoIQ™ control system and ReliaClean™ water
system cleaning process.
models, like those
CME306 & CME456
Nameplate on Back Panel
Serial Number Plate, Remove
Front Panel to Locate
Note: Slope front bins must have an internal baffle.
Scotsman’s BH375 has the required baffle. Baffle
must be approximately in the position shown in the
diagram.
Baffle
Service Technicians:
come set from the factory at a “standard” water
rinse, which is compatible with typical water
conditions. They may be adjusted to “Minimum" or
“Maximum" 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.
All models covered here
January 2000
Page 5
12.0"
4.0"
Side View
CME306 & CME456
Location
Air cooled models take room temperature air in
from the left side and discharge warm air out the
back. Do not place them where the heat and noise
will be objectionable.
A 6 inch MINIMUM clearance between the back
and a wall and between the left side and a wall or
another product is required for the basic operation
and service of the air cooled model.
Remove Air Baffle from its
Shipping Position.
Use baffle for
In-The-Corner Applications
Back View of Ice
Machine
Airflow is
in the left
side and
out the
back
Note: A six inch side clearance with zero top
clearance will NOT provide enough air exchange
space for optimum performance. 12 inches side
clearance is required when there is no top
clearance.
Condenser
Outlet
Attach
Baffle
Here
Air
Baffle
Baffle Position
Wall
Ice Machine
Top View
Ice Machine
Top View
Wall
Air cooled models come equipped with a baffle
that can be used when the machine is installed
in a corner.
The purpose of the baffle is to limit air
recirculation. This can occur in a corner when the
hot air from the back of the machine is re-drawn
back into the machine from the nearest side of the
machine.
Baffle
Install the air baffle as shown on the left rear
corner when a side wall and back wall are between
6 and 18 inches from the unit.
January 2000
Page 6
On a Bin
CME306 & CME456
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.
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.
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. After
removal of the shipping straps, lift the ice machine
off the skid directly onto the bin.
Note: The machine is heavy! Use a mechanical
hoist if necessary.
Secure the ice machine to the bin with the
hardware provided (two metal straps and 4 bolts).
Application Notes:
No thermostat is required for any of the following
bins.
BH375: Direct fit. Connect ice machine to bin
using strap and bolts from ice machine for the ice
machine side, and sheet metal screws to attach
the bracket to the bin. Use the bracket as a
template and drill two holes in the back of the bin
for the sheet metal screws.
HTB555: Use KBT27
BH550: Use KBT27 and Kbaffle1
Other Brand’s Bins: KBT27 may allow installation
of this unit on a non-Scotsman 30” wide bin.
Thermostat kit KSTAT-22 must be used if the bin’s
baffle is too short.
May 2004
Page 7
CME306 & CME456
On a Beverage Dispenser
The CME306 or CME456 will mount on top of
many brands of ice and beverage dispensers. The
brands include Scotsman, Cornelius and Lancer.
Scotsman and Cornelius use the same adapter
kits. 22” wide ice dispensers use KBT42, while 30”
wide units use kits KBT43.
A bracket kit (A37693-021) is required to connect
and secure the CME306 or CME456 to the Lancer
22” wide ice or ice and beverage dispenser.
No thermostat is required in any of the above.
Ice Machine
Adapter
A bracket and filler plate kit (KLD22-30) is required
to connect and secure the CME306 or CME456 to
the Lancer 30” wide ice or ice and beverage
dispenser. It includes a thermostat and bracket.
Other dispensers may require their own adapter
kits. Contact Scotsman or a Scotsman Distributor
for additional information.
Ice Machine
Dispenser
On Scotsman Dispenser
Dispenser
Bracket
On a Lancer Dispenser
May 2004
Page 8
On a Motel Dispenser
Either the CME306 or the CME456 may be placed
on a Motel Dispenser.
No thermostat is required when used on either the
SLD150 or the HD150, or HD156 or HD22.
Scotsman model SLD150 may be used, but the
back portion of the top must be removed and
replaced with the KDT22 kit.
The Scotsman HD22 is a direct fit.
Ice Machine
CME306 & CME456
May 2004
Page 9
Dispenser
CME306 & CME456
Cabinet Panel Removal:
Note: The top panel holds the upper edges of the
side panels in place.
1. Remove the front panel by removing the two
screws connecting the top edge of the front panel
to the machine, then pull out at the bottom.
2. Lift up at the front edge and push the top panel
back until it releases from the tabs connecting it to
the side panels.
3. Remove the screws at the front edge of the left
side panel, and push it back until it releases from
the tabs connecting it to the back panel.
January 2000
Page 10
Remove The
Front Panel
First
Bin Thermostat: Optional Installation
CME306 & CME456
The normal bin control is the ice sensor set. An
option, required in some cases, is a thermostat. Its
bulb must be deployed after the ice machine has
been placed on the bin or dispenser.
Note: Some configurations may have parts that
vary from these instructions. Follow the
instructions for the particular configuration.
Before starting, remove the left side panel and any
baffle in the bin.
1. Place thermostat in machine behind the high
voltage box and secure to the existing holes with
two screws. Locate bin thermostat bulb.
Thermostat
Body
4. Carefully position the thermostat bulb on the
bracket.
Insert Tip
5. Fasten the bracket to the bottom of the ice
machine with the two 3-pronged knobs supplied
with the kit.
2. Route bulb thru routing hole (located behind the
compressor).
Routing Hole
3. Locate bin thermostat bracket.
January 2000
Page 11
Bin
Thermostat
Bracket
6. Pull excess capillary tubing into the machine..
7. Continue with the installation. If a baffle was
removed return it to its original position.
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
o
o
8000 340
9000 385
o
o
Use This Table to Adjust Thermostat
CME306 & CME456
Plumbing - Air Cooled
All models require an adequate potable water
supply and a gravity drain. The recommendations
for tubing are:
Water supply to be
•
Drain to be
•
3
" OD.
4
3
" OD.
8
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:
Air cooled models have 1 water supply connection,
3
" male flare at the back of the cabinet.
a
8
Exception: WRAS listed units have a 3/4" GAS or
BSPP water inlet fitting size.
Connect to cold potable water that has adequate
pressure.
Note: Using water supply tubing smaller than
3
"
8
will cause severe operational issues.
Water Filters:
All Drain Tubing Material must be RIGID.
Flexible tubing will eventually cause a
restricted drain.
Drain:
Air cooled models have 1 gravity drain connection,
3
" FPT fitting at the back of the cabinet. Use only
a
4
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
The water filters must flow at least 1.25 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.
Vent this
Drain
Water OUT
Water IN
Bin Drain
Plumbing Connections
November 2005
Page 12
CME306 & CME456
Page
13
Plumbing - Water Cooled
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
" OD.
4
3
" OD.
8
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:
Water cooled models have TWO water supply
connections, a
AND an additional
3
" male flare for POTABLE water
8
3
" FPT condenser inlet
8
connection, both at the back of the cabinet.
Connect both to cold water w/adequate pressure.
Note: Using water supply tubing smaller than
3
"
8
will cause severe operational issues.
Water Filters:
The water filters must flow at least 1.25 GPM to
the potable water inlet 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. Connect the water cooled condenser
inlet to the water supply ahead of the water filters.
All Drain Tubing Material must be RIGID.
Flexible tubing will eventually cause a
restricted drain.
Drain:
Water cooled models have TWO gravity drain
connections, a
3
" FPT fitting AND a ½ “ FPT
4
fitting. Use only RIGID TUBING. Flexible tubing
may be easily kinked or become cracked.
The reservoir drain must be vented at the back of
the cabinet. Use an 18" high vent. Do NOT vent
the condenser drain.
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.
Bin Drain
Condenser
Inlet
Potable
Water IN
Do NOT Vent the
Condenser Drain
Water OUT.
VENT THIS
DRAIN
Plumbing Connections
June 2001
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