Scotsman CME1856W 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.
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.
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.
All Scotsman CM3models, like this one, feature
Scotsman’s AutoIQ™ control system and
ReliaClean™ water system cleaning process.
CME1856W
November 2001
Page 1
TABLE OF CONTENTS
Specifications ············ PAGE2
Ice Machine Layouts ········· PAGE3
Pre-Installation ············ PAGE4
Location & Assembly ········ PAGE5
Bin Control: Installation ······· PAGE6
Bin Control ·············· PAGE7
For The Installer: ·········· PAGE8
Electrical ··············· PAGE9
Plumbing ··············· PAGE10
Stacking Kit - KSCME6-LG-B ···· PAGE11
Stacking ··············· PAGE12
After Utility Connections ······· PAGE13
Component Location and Function · PAGE 14
System Controller ·········· PAGE15
Initial Start Up ············ PAGE16
Adjustments ············· PAGE17
How To Operate The Controller · · · PAGE 18
How The Electronic Cuber Works · · PAGE 19
How The Electronic Cuber Works · · PAGE 20
Startup: Three Phase Compressor · PAGE 21
Technicians Only: Freeze Cycle Sequence
···················· PAGE22
Technicians Only: Harvest Cycle Sequence &
Other Notes ············· PAGE23
Sanitation and Cleaning ······· PAGE24
Additional Maintenance ······· PAGE25
Additional Maintenance: Water Distributors
···················· 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 · · · PAGE 31
Service Diagnosis ·········· PAGE32
Operational Characteristics: CME1856W
···················· PAGE33
Suction Pressure ·········· PAGE34
Removal and Replacement ····· PAGE35
Removal and Replacement ····· PAGE36
Controller Features & Last Error Recall
···················· PAGE37
Removal and Replacement: System Controller
···················· PAGE38
Removal and Replacement: ···· PAGE39
Removal and Replacement ····· PAGE40
Refrigerant ·············· PAGE41
Liquid Charging ··········· PAGE42
Before Calling for Service ······ PAGE43
Index ················· PAGE44
Printed on recycled paper. Service parts list & wiring diagrams located
in the middle of this manual.

Specifications
This ice machine is designed to be installed
indoors, in a controlled environment. While it can
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.
Potable Water Supply
Temperature
40oF. 100oF.
Condenser Water
Inlet Temperature
40oF. 100oF.
Water Pressure 20 psi 80 psi
Voltage (60 Hz) 197 253
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, 48" wide or wider
open top Scotsman Ice Storage Bin. Some
examples are:
•BH900
•BH1370
•BH1356
•BH1650
•BH1000 (requires kit KBT21)
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 BH900 and BH1000 have the required
baffle. Baffle must be approximately in the position
shown in the diagram below.
CME1856W
November 2001
Page 2
Model Number Dimensions
WxDxH
(w/o bin)
Basic Electrical
(volts/Hz/phase)
Condenser
Water
Supply
Refrigerant
Charge
R-404A
Minimum
Circuit
Ampacity
Maximum
Fuse Size
CME1856WS-32 48½“x24"x28” 208-230/60/1 GPH 107* 60 30 40
CME1856WS-3 same 208-230/60/3 GPH 107* 60 20 30
*Condenser only @90/70
If the numbers on the nameplate are different than the above, use the nameplate’s information.
The stacking kit required to place two like model cubers together is: KSCME6-LG-B.
BASIC INFORMATION
12.0"
4.0"
Side View
Baffle

CME1856W
November 2001
Page 3
Ice Machine Layouts

Pre-Installation
Other Applications:
Check sales literature for additional information.
Electrical:
Check the nameplate for electrical requirements.
The nameplate is located on the back of the ice
machine. If the information on the nameplate is
different from other published information, go by
the nameplate data.
While the model and
serial number are on
the nameplate, a
serial number plate is
located at the front of
the machine, behind
the left front panel
and to the right of the
purge valve.
Water:
There is no such thing as pure water. All water
contains some impurities. There are two ways
water carries the impurities: suspended and
dissolved. Suspended solids can be filtered out.
Dissolved solids must be diluted or treated. Water
filters are recommended to remove suspended
solids. Some filters have treatment in them for
suspended solids. Check with a water treatment
service for a recommendation.
Cube Ice machines use more water than what
ends up in the bin as ice. While most water is used
during ice making, a portion is designed to “rinse"
out the water system to keep hard water scale
from clogging up the machine. That water rinse,
combined with water filters, prolongs the times
between needed water system cleaning.
Service Technicians: All models covered here
come set from the factory with at a “Standard”
water rinse. Standard water rinse is designed to be
compatible with typical water conditions. The
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.
CME1856W
November 2001
Page 4
Nameplate
Serial Number Plate

Location & Assembly
Locate the ice machine indoors. A 6 inch minimum
clearance on the back and left sides is required for
the proper operation and service of this machine.
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 and left panels. Remove the
compressor shipping brackets and all packaging
materials.
After all packing materials have been removed
from the ice machine, lift or hoist the machine onto
the bin. Align the sides and back of the machine
with the sides and back of the bin.
Secure the ice machine to the bin with the two
metal straps and 4 bolts provided.
Cabinet Panel Removal:
1. Remove the front panel by removing the two
screws connecting the front panel to the machine.
2. Lift up at the front edge and push the top panel
back until it releases from the tabs connecting it to
the back panel.
3. Remove two screws at the front of each side
panel, and pull them forward until they release
from the tabs connecting them to the back panel.
Evaporator Cover:
CME1856W
November 2003
Page 5
To Remove
Evaporator Cover:
Push Up and Tilt Out

CME1856W
November 2001
Page 6
Bin Control: Installation
The bin control is a thermostat. It must be field
installed after the ice machine has been placed on
the bin.
Before starting, remove the left front panel and any
baffle in the bin.
1. Locate bin thermostat bulb.
2. Route bulb thru routing tube (located between
the compressor and the reservoir).
3. Locate bin thermostat bracket.
4. Carefully position the thermostat bulb on the
bracket (see the diagram on the next page).
5. Fasten the bracket to the bottom of the ice
machine with the two 3-pronged knobs supplied
with the unit.
6. Pull back into the ice machine any excess
capillary tubing.
7. Return the baffle to the bin and continue with
the installation.
Note: If the machine is located at an altitude higher
than 2,000 ft., adjust the thermostat by removing
the plastic cover and rotating the adjustment screw
per the table.
Route Bin Thermostat Bulb Into Bin
Bin Thermostat Bulb
Bin
Thermostat
Body
Thermostat Bulb
Routing Tube
Bin Thermostat Altitude Correction Table
CW Turns of Range Screw (under plastic cover)
Feet Turns Feet Turns
2000 55o8000 340o
4000 160o9000 385o
6000 250o10000 405o
Use This Table to Adjust Thermostat

CME1856W
November 2001
Page 7
Bin Control
Attach Thermostat Bulb to Bracket
Bin Thermostat
Bracket
Attach Bracket to Bottom of Ice Machine
Minimize Excess
Tube in Bin
Bin Thermostat Capillary Tube
Three-Pronged Knob
Thermostat and
Bracket
Mount Bulb Here

For The Installer:
Cooling Tower Applications:
This unit requires no special modifications for use
on a cooling tower. However, the sizing of the
cooling tower requires the heat of rejection and the
pressure drop across the ice machine’s water
cooling circuit (water regulating valve and
condenser).
·Heat of Rejection: 27,400 BTUH - Peak
·Pressure Drop: 7 psi
·Maximum water temp into condenser: 110oF.
·Peak GPM at 110oF:9-10
·GPH at 110/100: 372
·GPH at 90/70: 107
·GPH at 70/50: 59
CME1856W
October 2001
Page 8

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.
Electrical connections are made in the junction box
in the back of the cabinet.
1. Remove the junction box cover.
2. Knock out one hole for a field supplied strain
relief.
3. Install wires and strain relief per code.
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.
CME1856W
November 2001
Page 9

Plumbing
CME1856W
November 2001
Page 10
All models require an adequate potable water
supply, a condenser water supply and a gravity
drain. The recommendations for tubing are:
•Potable water supply to be 38" OD.
•Condenser water supply to be ½" OD.
•Reservoir drain to be 34" OD and vented
•Condenser drain to be ½” OD, non vented
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 potable water supply connection,
a38" 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.
The water cooled condenser requires an additional
supply line.
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. Filtering the
condenser water supply is not recommended.
All Drain Tubing Material must be RIGID.
Flexible tubing will eventually kink and cause a
restricted drain.
Drain:
Connect a 34" drain tube to the reservoir drain
fitting at the back of the cabinet. Use only RIGID
TUBING. Flexible tubing may be easily kinked or
become cracked.
The reservoir drain tube must be vented at the
back of the cabinet. Use an 18" high vent.
Connect a ½” drain tube to the condenser drain at
the back of the cabinet. Do not vent this drain.
The ice storage bin will have a drain out the back
or base, depending upon the model.
The drains 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