Scotsman CSW45 Installation guide

User Manual / Care Instructions
PRODUCT #:
AHT9KCSW45A1A ITEM: Ice Machine from Scotsman
BRAND:
N/A
SOURCE FOR PURCHASE:
SpaEquip, Inc.
211 Wappo Ave., Calistoga, CA 94515
p: 707.737.1100
f: 707.737.1150
www.spaequip.com
LIST PRICE (USD):
FEATURES:
Undercounter Compact Makes up to 44 pounds of ice in 24 hours and stores up to 25 pounds of ice. Compact size (14"
wide cabinet) Timless, smooth full-length door with reversible hinges. Unique inside door flap prevents ice spills and
maximizes storage. Interior light. Air cooled system. 6' long power cord. Easy to install; features adjustable rear rollers
and front legs for easy leveling. Also available with a drain pump; contact us for info and pricing. Stainless steel; white
enamel finish. 14"W x 34" H, 115-Volt. UL/CUL-listed, NSF-approved. 1-year warranty on parts and labor. Oversized
item - ships by Truck.
SPECIFICATIONS:
Dimensions: 14"(35.56 cm)W x 24 5/16"(61.75 cm)D x 34"(86.36 cm)H
Electrical: 115V AC, 15 Amps
Suggested Outlet: Dedicated outlet, GFCI protect
Plumbing: Cold water inlet 1/4" OD soft copper tubing with shut off valve, plus waste by gravity or pump to
drain
Notes: Installed by Client's Gen Contractor, See Detailed Specifications
Warranty: 1 Year Parts & Labor
Certifications: UL, cUL, NSF
Country of Origin: TBD
Installed By: Client's Contractor
Product Code: AHT9KCSW45A1A
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Page 1 of 15

Using The Ice Maker
Understanding How Your Ice Maker Works
When you first start your ice maker, the water pan
will fill and the system will rinse itself before starting
to make ice. The rinsing process takes about five
minutes.
Under normal operating conditions, the ice maker will
cycle at preset temperatures. The ice level sensor
located in the ice storage bin will monitor the ice
levels.
IMPORTANT
•If the water supply to the ice maker is turned off,
be sure to set the ice maker control to OFF.
•The ice maker is designed to make clear ice
from the majority of water sources on a daily
basis. If your results are unsatisfactory, your
water may need to be filtered or treated.
Making Ice
1. Water is constantly circulated over a freezing
plate. As the water freezes into ice, the minerals in
the water are rejected. This produces a clear sheet
of ice with a low mineral content.
2. When the desired thickness is reached, the ice
sheet is released and slides onto a cutter grid. The
grid divides the sheet into individual cubes.
3. The water containing the rejected minerals is
drained after each freezing cycle.
4. Fresh water enters the machine for the next ice
making cycle.
5. Cubes fall into the storage bin. When the bin is
full, the ice maker shuts off automatically and
restarts when more ice is needed. The ice bin is not
refrigerated and some melting will occur. The
amount of melting varies with room temperature.
NOTE: As the room and water temperatures vary, so
will the amount of ice produced and stored. This
means that higher operating temperatures result in
reduced ice production.
Setting the Controls
1. To start the normal ice making cycle, select ON.
2. To stop ice maker operation, select OFF.
NOTE: The CLEAN setting is used whenever
solutions are circulated through the ice maker for
cleaning. Only the water pump and compressor
operate at this setting. See the “Cleaning the Ice
Maker System” section.
CSW45
July 1999
Page 11
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Page 2 of 15

Caring For Your Ice Maker
Periodically inspect and clean the ice maker to keep
it operating at peak efficiency and to prevent
premature failure of system components.
Both the ice making system and the air cooled
condenser need to be cleaned regularly.
The minerals rejected from the circulating water
during the freezing cycle will eventually form a hard
scaly deposit in the water system which prevents a
rapid release of the ice from the freezing plate.
Clean the ice and water system periodically to
remove mineral scale buildup. Frequency of cleaning
depends on water hardness. With hard water (15 to
20 grains/gal. [4 to 5 grains/liter]), cleaning may be
required as frequently as every 6 months.
Cleaning Exterior Surfaces
Wash the exterior enamel surfaces and gaskets with
warm water and mild soap or detergent. Wipe and
dry. Regular use of a good household appliance
cleaner and wax will help protect the finish.
Do not use abrasive cleaners on enamel surfaces as
they may scratch the finish.
Cleaning the Ice Maker System
1. Push the selector switch to OFF.
2. Wait 5 to 10 minutes for the ice to fall into the
storage bin. Remove all ice from the storage bin.
3. Unscrew the drain cap from the bottom of the
water pan located inside the storage bin as shown.
Allow the water to drain completely.
4. Replace the drain cap. Pour 16 ounces of
Scotsman Clear 1 scale remover into the water pan.
Fill the bottle twice with tap water and pour it into the
water pan.
5. Push the selector switch to CLEAN. (See the
“Setting the Controls” section.) The light will turn on,
indicating that the cleaning cycle is in process. When
the indicator light turns off (approximately 45
minutes), the cleaning cycle is complete. During the
cleaning cycle, the system will both clean and rinse
itself.
6. After the cleaning cycle is complete, remove the
drain cap from the water pan to see if any cleaning
solution is left in the water pan. If cleaning solution
drains from the water pan, you should run the clean
cycle again.
NOTE: Severe scale buildup may require repeated
cleaning with a fresh quantity of cleaning solution.
7. Push the selector switch to ON to resume ice
production.
CSW45
September 2007
Page 12
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Page 3 of 15

Cleaning the Condenser
A dirty or clogged condenser:
•Prevents proper airflow.
•Reduces ice making capacity.
•Causes higher than recommended operating
temperatures which may lead to component
failure.
1. Unplug ice maker or disconnect power.
2. Remove the two screws in the lower access panel
and the two screws from the base grille area of the
front panel support. Pull forward to remove the lower
access panel.
3. Pull the bottom forward and then pull down to
remove the lower access panel.
4. Remove dirt and lint from the condenser fins and
the unit compartment with a brush attachment on a
vacuum cleaner.
5. Replace the lower access panel using the four
screws.
6. Plug in ice maker or reconnect power.
CSW45
July 1999
Page 13
Electrical Shock Hazard
Failure to follow these
instructions can result in
death, fire, or electrical
shock.
Disconnect power before
servicing.
Replace all panels before
operating.
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Page 4 of 15

Cleaning the Interior Components
1. Unplug ice maker or disconnect power.
2. Open the storage bin door and remove any ice
that is in the bin.
3. Remove the drain cap from the water pan and
drain thoroughly. Replace the drain cap.
4. Remove the three screws that hold the cutter grid
cover in place.
5. Unplug the wiring harness from the left side of the
cutter grid.
1. Cutter Grid Cover
2. Screws
6. Unplug the ice level sensor from the right side of
the cutter grid. Pull the ice level sensor down and
forward away from the cutter grid.
7. Remove the right-hand screw and loosen the
left-hand screw. Lift the cutter grid up and out and
over the left-hand screw.
NOTE: Make sure the plastic spacer from the
right-hand side of the cutter grid bracket stays with
the cutter grid.
1. Cutter Grid Harness
2. Screw
3. Cutter Grid
4. Ice Level Sensor Harness
5. Plastic Spacer
6. Screw
CSW45
July 1999
Page 14
1
2
1
2
3
4
5
6
Electrical Shock Hazard
Failure to follow these
instructions can result in
death, fire, or electrical
shock.
Disconnect power before
servicing.
Replace all panels before
operating.
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Page 5 of 15

Cleaning Interior - continued
8. Remove the two screws that hold the water pan in
place. Push down with one hand on the front of the
pan while pulling forward on the bottom back side.
9. Wash the interior components (cutter grid, exterior
of hoses, and water pan) and the storage bin, door
gasket, and ice scoop with mild soap or detergent
and warm water. Rinse in clean water. Then clean
the same parts with a solution of 1 tablespoon (15
mL) of household bleach in 1 gallon (3.8 L) warm
water. Rinse again thoroughly in clean water.
NOTE: Do not remove hoses. Do not wash plastic
parts in dishwasher. They cannot withstand
temperatures above 145°F (63°C).
10. Replace water pan by pushing back on the
bottom with one hand while pushing up and back on
the top. Secure the water pan by replacing both
screws.
11. Check the following:
•Drain cap from the water pan is in place.
•Hose from water pan is inserted into storage bin
drain opening.
12. Slide the cutter grid back into place and secure it
by replacing the right-hand screw and plastic spacer.
Then tighten the left-hand screw. Reconnect the
cutter grid and ice level sensor harnesses.
Changing the Light Bulb
The ice maker has a light bulb in the top of the
storage bin.
To replace it, open the bin door and follow these
instructions:
1. Unplug ice maker or disconnect power.
2. Remove the three screws that hold the cutter grid
cover in place. Reach behind the control panel and
pull the light bulb down from the ceiling.
3. Replace with a 12-volt wedge base-type bulb
(automotive #917). Locate the light bulb receptacle in
the ceiling behind the control panel. Align the flat
edge of the light bulb with the receptacle and snap
the bulb into place.
4. Replace the cutter grid cover with three screws.
5. Plug in ice maker or reconnect power.
CSW45
July 1999
Page 15
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Page 6 of 15

Vacation and Moving Care
To shut down the ice maker:
1. Unplug ice maker or disconnect power.
2. Remove all ice from storage bin.
3. Shut off the water supply.
4. Remove the two screws in the lower access panel
and the two screws from the base grille area of the
front panel support. Pull forward to remove the lower
access panel.
5. Disconnect the inlet and outlet lines to water
valve. Allow these lines to drain and then reconnect
to the valve.
6. Replace lower access panel and screws. Drain
water from water pan by removing the drain cap.
Also, remove water from drain line.
7. Before using again, clean the ice maker and
storage bin.
8. Plug in ice maker or reconnect power.
NOTE: All components of the ice maker are
permanently lubricated at the factory. They should
not require any additional oiling throughout the
normal life of the machine.
WA so can result in death or
electrical shock.
CSW45
July 1999
Page 16
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Page 7 of 15

Before Calling for Service
Try the solutions suggested here first in order to
avoid the cost of an unnecessary service call.
Unit does not run
nIs the control set to ON?
Be sure that the control is set to ON.
nIs the power cord plugged in?
Firmly plug the cord into a live outlet with proper
voltage.
nHas a household fuse or circuit breaker
tripped?
Replace the fuse or reset the circuit.
nIs the room temperature cooler than normal?
Room temperature must be above 55°F (13°C).
Otherwise, bin thermostat may sense cold room
temperature and shut off even though bin is not full
of ice. Also, unit may not restart once it does shut off.
Unit runs but produces no ice
nIs the control set to ON?
Be sure that the control is set to ON.
nIs the water supply connected?
Make sure the water supply is properly connected
and turned on.
Unit runs but produces very little ice
nIs the room temperature hotter than normal?
Room temperatures of more than 90°F (32°C) will
normally reduce ice production.
nIs the condenser dirty?
Dirt or lint may be blocking the airflow through the
condenser. See the “Cleaning the Condenser”
section.
nIs there scale buildup in the ice maker?
If there is white scale buildup in the ice maker’s
water or freezing system, you should clean the ice
maker. See the “Cleaning the Ice Maker System”
and the “Cleaning the Interior Components” sections.
Grid is not cutting ice sheets
nIs the cutter grid securely in place?
Unplug the ice maker or disconnect power. Remove
the cutter grid cover and check the cutter grid
harness plug to make sure the connection is secure.
Taste in ice cubes
nIs there unusually high mineral content in the
water supply?
The water may need to be filtered or treated.
nAre there food items stored in the ice bin?
Do not store any foods in the ice bin.
nWere all the packaging materials removed?
Make sure that all packaging materials were
removed at the time of installation. Service Diagnosis
CSW45
July 1999
Page 17
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Page 8 of 15

Technical Service Diagnosis
CSW45
July 1999
Page 18
Symptom Possible Cause Probable Correction
Unit Off
No power to unit
Plug unit it
Reset circuit breaker or replace
fuse
Unit switched off Check control switch
Ice level control keeping unit off
Room colder than 55oF., increase
heat
Ice on sensor tube - remove it
Transformer Open Check/replace transformer
Control board failed
Switch unit to Clean, note if all
valves and motors are switched
on for 5 seconds each one after
another. If not, replace the board.
Unit runs, makes no ice
No water to unit
Check/restore water supply
Check water valve
Pump does not run
Check connection from control
box to pump
Check/replace pump
Unit overheating
Check for dirty condenser
Check fan blade and motor
Air flow blocked, check for air
obstruction
Compressor does not run
Check compressor relay
Check compressor windings
Low on refrigerant
Install service ports, weigh out
charge, If low, locate and repair
leak, replace drier evacuate to
300 microns and weigh in
nameplate charge*
Hot gas valve leaking thru Check/replace hot gas valve
* If the system has been running in a vacuum AND the leak is found to be on the LOW side, repair the leak
AND replace the compressor.
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Page 9 of 15

Technical Service Diagnosis
July 1999
Page 19
CSW45
Symptom Probable Cause Possible Correction
Low ice making capacity
Dirty air cooled condenser Clean condenser coil
Dirty fan blade Clean fan blade
Water valve does not shut off
tightly Check/replace inlet water valve
Scale on the evaporator surface Clean the ice machine’s water
system
Unit in a very warm room Less ice will be made in
temperatures over 90oF.
Unit will not shut off Ice level control failure
Check to see if it is unplugged
from the control box, if its
plugged in, check resistance
levels given on next page
Ice size incorrect Evaporator thermistor failure
Check to see if it is unplugged
from the control box, if its
plugged in, check resistance
levels given on next page
Ice formation uneven
Water distributor restricted Clean the ice machine’s water
system
Cutter grid failure Replace grid
Makes excessive noise
Components contacting Check & adjust position of tubes
and panels
Fan blade bent Check & replace fan blade
Fan or pump motor bearing
failure
Locate noise, unplug motor to
confirm. Replace worn
component.
Water in bin
Drain plugged Clean out drain
Drain pump failed Check/replace pump
Ice melted together Low amount of ice used Remove ice
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Page 10 of 15

Technical Information
Performance Data
Ice Bin Thermistor
Evaporator Thermistor
Components
CSW45
October 2005
Page 20
Temperature Suction Pressure at End
of Freeze Cycle
Head Pressure at End of
Freeze Cycle Cycle Time in Minutes
Air 70oF. Water 60oF. 1-4 65-80 18-22
Air 90oF. Water 60oF. 2-5 85-100 22-27
Air 100oF. Water 60oF. 2-6 85-105 28-35
Air 70oF. Water 80oF. 1-4 65-80 20-25
Air 90oF. Water 80oF. 2-5 85-100 23-30
Air 100oF. Water 80oF. 2 - 6 85- 105 30 - 38
Temperature Resistance Temperature Resistance
Bin Shut Off 40oF. ±1o25.9kW±3% 35oF. ±1o29.8kW±3%
Cut-IN Cut-OUT Water valve off (harvest)
Ice
Thickness Temperature Resistance Temperature Resistance Temperature Resistance
Normal 52.5oF. ±.3o18.7kW±1% 6.5oF. ±.3o69.5kW±1% 40oF. ±.3o25.9kW±1%
Thick 52.5oF. ±.3o18.7kW±1% 4.5oF. ±.3o73.9kW±1% 40oF. ±.3o25.9kW±1%
Thin 52.5oF. ±.3o18.7kW±1% 8.5oF. ±.3o65.3kW±1% 40oF. ±.3o25.9kW±1%
•Compressor: Embraco, 244 watts .2 HP
•Cutter Grid: 8.7 volts
•Light: 8.7 volts
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Page 11 of 15

Electrical Sequence
The CSW45’s operation is controlled by an electronic
board. This board takes in data from two thermistors:
The Ice Bin Thermistor and the Evaporator
Thermistor. The two resistances the thermistors
supply, along with the position of the control switch,
determine the cycles of the ice machine.
Start Up
The inlet water valve opens for about two minutes to
fill the reservoir.
The water pump starts and stays on for about a
minute, then shuts off.
Then the inlet water valve opens again for two
minutes. After it closes, the compressor, pump and
fan motor start.
Freeze
The compressor, fan motor and water pump are all
operating and stay in a Freeze cycle until the
evaporator thermistor reaches 6.5oF. That signals
the control board to place the unit into a harvest
cycle.
Harvest
The compressor and hot gas valve are both powered
during the harvest cycle. The fan and pump are OFF.
The machine stays in the harvest cycle until the
evaporator thermistor senses 52oF. If the bin is not
full, the unit goes into another freeze cycle.
Bin Full
The unit will shut down when the ice level sensor
senses a temperature of less than 35oF. It will restart
when the thermistor’s temperature increases to 41oF.
Clean
The Clean Cycle lasts about 47 minutes. During the
first minute all motors and valves will be switched on
in sequence for 5 seconds each. This includes the
inlet water valve, condenser fan, hot gas solenoid
valve, water spray pump and the compressor. This
early portion of the Clean Cycle doubles as a
diagnostic cycle. The last 46 minutes of the clean the
compressor, water spray pump and hot gas valve will
be on.
July 1999
Page 21
CSW45
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Page 12 of 15

Repair Information
Cutting Grid
The cutting grid rests on two shelves molded into the
bin liner. It is also secured to the liner with two
screws.
1. Remove the three screws holding the cutter grid
cover to the grid.
2. Disconnect the three wiring harness plugs from
the control box.
3. Remove the screw holding the grid to the right
side of the liner.
4. Loosen, but don’t remove the screw holding the
grid to the left side of the liner.
Lift the front of the grid until the slot in the grid clears
the screw, the pull the grid forward and out of the
cabinet.
Control Box
The control box is located above the cutting grid. It is
suspended from the top panel by 4 screws. Its wiring
harness routes out the back of the control box
through a molded channel.
July 1999
Page 22
CSW45
Remove 3 Screws
Wire Harness Plugs
Loosen This
Screw
Remove This
Screw
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Page 13 of 15

Repair Information
Water Slide
The water slide is mounted to the front of the
evaporator and diverts water to the reservoir. It is
connected to the evaporator by two screws. Remove
the cutter grid first to get access to it.
Reservoir
The reservoir is located below the evaporator, and is
mounted to the bin liner with two screws.
Water Pump
The water pump is located below the evaporator. It is
mounted to the bin liner with three screws. It also
has a quick-connect electrical plug.
Evaporator Thermistor
This thermistor is a set of two red wires that connect
to the control box. There is a molded portion in one
of the wires with a clip on it. That portion clips onto
the part of the suction line under the middle of the
evaporator that runs front to back.
Compressor
The terminals for the compressor are accessible only
from the back of the unit. Compressor replacement
requires lifting up of the cabinet at the front.
Fan Motor
The fan motor and/or blade is only accessible after
the cabinet has been tilted up.
Component Compartment Access
Note: Chassis does NOT pull out.
Unplug the unit from the power supply. If built in, pull
it out from the counter. Note: The water and drain
lines may have to be disconnected.
1 Remove the front panel.
2. Remove the leveling legs from the cabinet.
3. Remove two screws at the front holding chassis
base to cabinet.
4. Tilt the entire ice maker back far enough to gain
access to the compartment.
July 1999
Page 23
CSW45
Leveling Leg
Screws
Screws
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Repair Information
When tilting the cabinet, be sure it is secure to avoid
any possibility that it will tip too far back or fall
forward.
July 1999
Page 24
CSW45
Illustration of Cabinet in Service Position
Fan Motor,
viewed from
the back.
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Page 15 of 15