Scotsman Ice Ice Maker CU1526 User Guide
Installation and  
User's Manual for  
Self Contained Cubers  
Models CU1526, CU2026 and CU3030  
 
CU1526, CU2026, CU3030  
User Manual  
Installation: Product Specifications  
Location Limitations:  
In most cases, CU3030 air cooled models installed  
without legs or casters will experience reduced ice  
making capacity.  
The product is designed to be installed indoors, in  
a controlled environment. Air cooled models  
discharge very warm air into the room. Water  
cooled models discharge warm water into the  
building’s drain. Space needs to be provided for  
service access.  
Environmental Limitations  
Minimum  
50oF.  
Maximum  
100oF.  
100oF.  
80 psi  
Air temperature  
Water temperature 40oF.  
Space Limitations  
Water pressure 20 psi  
Do not block air flow at the front.  
Note: Ice making capacity will be severely reduced  
for air cooled machines in hot environments, such  
as those over 95 degrees.  
Power supply – acceptable voltage ranges  
Minimum  
104  
Maximum  
126  
115 volt model  
230 volt model  
198  
253  
Warranty Information  
The warranty statement for this product is provided  
separately from this manual. Refer to it for  
applicable coverage. In general warranty covers  
defects in material or workmanship. It does not  
cover maintenance, corrections to installations, or  
situations when the machine is operated in  
circumstances that exceed the limitations printed  
above.  
Warm Air Out  
Room Temp Air In  
Air Flow - Do Not Restrict  
Airflow for air cooled models is in the front left and  
out the front right; CU3030 air cooled models also  
take air in from the bottom of the cabinet  
Product Information  
Built In Situations:  
The product is a self contained cuber with bin. That  
type of machine is designed to be free standing or  
it can be built in under the counter.  
• If built in under the counter with no space  
above, the bin cannot be removed without  
moving the unit.  
Options  
• If built in with 1" or more clearance above the  
unit, the bin can be removed without moving  
the unit.  
Casters may be used in place of the supplied legs,  
the kit number is KBC1.  
• If built in with between 1/2 and 1 inch of  
clearance, releasing the top panel's back flap  
prior to placement will allow removal of the  
bin without moving the unit.  
When not using legs or casters, most codes  
require sealing to the floor. Kit numbers to allow  
sealing are KPUFM26 and KPUFM30.  
May 2008  
Page 2  
 
 
CU1526, CU2026, CU3030  
User Manual  
Model Number Description  
Example:  
Scotsman ice systems are designed and  
manufactured with the highest regard for safety  
and performance.  
• CU2026SA-1A  
• C= cuber  
Scotsman assumes no liability of responsibility of  
any kind for products manufactured by Scotsman  
that have been altered in any way, including the  
use of any part and/or other components not  
specifically approved by Scotsman.  
• U=under the counter type  
• 20= nominal ice capacity in 10s of pounds  
• 26= nominal width of cabinet  
• S= Cube size. S=small or half dice cube.  
M=medium or full dice cube  
• A=Condenser type. A=air cooled. W=water  
Scotsman reserves the right to make design  
changes and/or improvements at any time.  
Specifications and design are subject to change  
without notice.  
cooled  
• -1=115 60 Hz, -32 = 230 volt, 60 Hz  
• A=Series revision code. A=first series  
Note: In some areas of this manual model numbers  
may include only the first six characters of the  
model number, meaning that the cube size,  
condenser type and voltage differences are not  
critical to the information listed there.  
Product Description & Electrical Requirements  
Dimensions  
Electrical  
Total Load  
Amps  
Maximum  
Fuse Size*  
w" x d" x h"**  
(without legs)  
Model  
Condenser  
volts/Hz/phase  
CU1526SA-1  
CU1526SW-1  
CU2026SA-1  
CU2026SW-1  
CU2026SA-32  
CU2026SW-32  
CU3030SA-1  
CU3030SW-1  
CU3030SA-32  
CU3030SW-32  
115/60/1  
Air  
7.7  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
26.62 x 27.5 x 33  
26.62 x 27.5 x 33  
115/60/1  
Water  
Air  
7.7  
115/60/1  
7.2  
115/60/1  
Water  
Air  
7.2  
208-230/60/1  
208-230/60/1  
115/60/1  
3.7  
Water  
Air  
2.96  
10.4  
10.4  
5.54  
4.48  
115/60/1  
Water  
Air  
30.62 x 30 x 33  
208-230/60/1  
208-230/60/1  
Water  
Table notes: Height is without legs. Medium cube models have the same electrical characteristics as  
Small. Series revision code omitted. * Or HACR type circuit breakers.  
** If not using legs, add .25" for screws below base. Legs add 6 to 6.75 inches, but not the 1/4 inch for  
the screws. Use of floor mounting kit adds about a half inch.  
May 2008  
Page 3  
 
 
CU1526, CU2026, CU3030  
User Manual  
Water  
The quality of the water supplied to the ice machine  
will have an impact on the time between cleanings  
and ultimately on the life of the product. Water can  
contain impurities either in suspension or in  
solution. Suspended solids can be filtered out. In  
solution or dissolved solids cannot be filtered, they  
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.  
Water purge  
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 be  
drained out every cycle to reduce the amount of  
hard water scale in the machine. That’s known as  
water purge, and an effective purge can increase  
the time between needed water system cleaning.  
In addition, this product has the capability to  
automatically vary the amount of water purged  
based on the purity of the water supplied to it. The  
water purge rate can also be set manually.  
Adjustments of purge due to local water conditions  
are not covered by warranty.  
RO water. This machine can be supplied with  
Reverse Osmosis water, but the water conductivity  
must be no less than 10 microSiemens/cm.  
Potential for Airborne Contamination  
Uncrate and Set Up  
Installing an ice machine near a source of yeast or  
similar material can result in the need for more  
frequent sanitation cleanings due to the tendency  
of these materials to contaminate the machine.  
Most water filters remove chlorine from the water  
supply to the machine which contributes to this  
situation. Testing has shown that using a filter that  
does not remove chlorine, such as the Scotsman  
Aqua Patrol, will greatly improve this situation,  
while the ice making process itself will remove the  
chlorine from the ice, resulting in no taste or odor  
impact. Additionally, devices intended to enhance  
ice machine sanitation, such as the Scotsman  
Aqua Bullet, can be placed in the reservoir to keep  
it cleaner between manual cleanings.  
Remove the carton, and using part of the carton as  
a cushion, tip the unit on its back to remove the  
skid and attach the legs or casters.  
If installing the optional kit to attach the unit to the  
floor, see that kit's instructions. If placing on the  
floor without using that kit, position field supplied  
furniture glide pads under the unit to reduce floor  
scratches from the metal on the bottom of the unit.  
Return the unit to an upright position. Do not start  
the unit for at least an hour after it has been  
returned to the upright position.  
Place the ice machine in the selected location and  
level it by adjusting the bin leg levelers.  
This manual covers several models. The model  
number on the product is located in two places, on  
the back dataplate and on the model and serial  
number tag, located behind the front panel. See the  
illustration for the dataplate and serial tag locations.  
Write the model and serial number of this product  
here:  
________________________________________  
May 2008  
Page 4  
 
 
CU1526, CU2026, CU3030  
User Manual  
CU1526 and CU2026 Cabinet Layout  
POTABLE  
WATER INLET  
3/8 FLARE  
39.5  
15.55  
COND DRAIN  
1/2 NPT  
(W/C ONLY)  
COND WATER  
REGULATOR  
3/8 NPT  
76.3  
30.04  
(W/C ONLY)  
DRAIN  
3/4 FPT  
15  
5.92  
11  
4.32  
POWER CORD  
8.1  
3.19  
6.6  
2.60  
12.3  
4.85  
16.5  
6.50  
69.9  
27.5  
12.3  
4.86  
67.6  
26.62  
13.9  
5.48  
99.0  
39.0  
75.3  
29.65  
10.2  
4.00  
MINIMUM  
UTILITY  
CLEARANCE  
15.2  
6.00  
56.2  
56.5  
22.12  
22.25  
May 2008  
Page 5  
 
 
CU1526, CU2026, CU3030  
User Manual  
CU3030 Cabinet Layout  
POTABLE  
WATER INLET  
3/8 FLARE  
60.5  
23.82  
COND DRAIN  
1/2 NPT  
(W/C ONLY)  
COND WATER  
REGULATOR  
3/8 NPT  
74.6  
29.36  
(W/C ONLY)  
DRAIN  
3/4 FPT  
17.7  
6.99  
11  
4.33  
8.1  
3.19  
POWER CORD  
7
2.77  
11.8  
4.65  
15.9  
6.27  
76.2  
30.0  
11.9  
4.69  
77.8  
30.62  
13.5  
5.30  
99.0  
39.0  
75.3  
29.63  
10.2  
4.00  
MINIMUM  
UTILITY  
CLEARANCE  
15.2  
6.00  
65.9  
61.6  
25.95  
24.25  
May 2008  
Page 6  
 
 
CU1526, CU2026, CU3030  
User Manual  
Ice Storage Bin Removal  
The ice storage bin is removable to allow access to 9. Remove two bolts from the bottom of the bin,  
the refrigeration system for service.  
one on the left and one on the right.  
1. Remove front louvers. Remove left then right.  
2. If the machine is in an ice making mode, push  
and release the Manual Harvest button to release  
any ice that might be on the evaporator.  
3. Push and hold the controller's Off button to shut  
the machine off.  
4. Remove all ice from the bin.  
5. Disconnect electrical power.  
Remove bolt  
to release bin  
6. Remove door (open about 1.5" and pull bottom  
out).  
7. Remove the top panel, there are two fasteners  
under the front corners of the top. Back them out  
and lift the top up, push back slightly and lift panel  
up and off the machine..  
10. Remove bolt from the back wall of the bin.  
Disconnect  
hose before  
moving bin.  
Remove  
bolt to  
release bin  
11. Pull the bin forward and off the chassis.  
8. Disconnect the drain tube from the bin drain  
fitting.  
May 2008  
Page 7  
 
 
CU1526, CU2026, CU3030  
User Manual  
Plumbing Requirements  
Connect to cold, potable water. A hand actuated  
valve within site of the machine is required. Air  
cooled models have a single 3/8” male flare inlet  
water connection. Water cooled models have an  
additional 3/8” FPT condenser inlet water  
2. Connect drain tubing to drain fittings.  
3. Route the drain tubing to building drain. Follow  
local codes for air gap.  
connection, and a 1/2" FPT condenser drain.  
Drain Tubing  
Water Supply and Filters  
Use rigid drain tubes and route them separately –  
do not Tee into the bin’s drain and, if water cooled,  
do not Tee the condenser drain into the reservoir  
or bin drain.  
If connecting to water filtration, filter only the water  
to the reservoir, not to the condenser. Install a new  
filter cartridge.  
All models require drain tubing to be attached to  
them. Air cooled models have a single ¾” FPT  
drain fitting in the back of the cabinet. Water cooled  
models have the same fitting plus an additional ½”  
FPT drain fitting in the back of the cabinet.  
Vent the reservoir drain. A vertical vent at the back  
of the drain, extended about 8 - 10" will allow the  
gravity drain to empty and also keep any surges  
during draining from discharging water out the vent.  
Install new tubing when replacing a prior ice  
machine, as the tubing will have been sized for the  
old model and might not be correct for this one.  
Horizontal runs of drain tubing need a ¼” fall per  
foot of run for proper draining.  
Follow all applicable codes.  
1. Connect water supply to water inlet fittings.  
3/8" OD tubing is recommended.  
Note: This NSF listed model has a 1" anti-back flow  
air gap between the float valve orifice and the  
highest possible reservoir water level; no back flow  
device is required for the potable water inlet.  
Water Filter (if used)  
Water Inlet  
Potable  
Water  
Connection  
Water Cooled  
Water Cooled  
Supply Location  
Drain Location  
Shut off valve  
Drain  
Tubing  
Bin Drain  
Connection  
Floor Drain  
Air Cooled Model Plumbing Connections  
Water Cooled Plumbing Connections  
May 2008  
Page 8  
 
 
CU1526, CU2026, CU3030  
User Manual  
Electrical  
The machine is supplied with a power cord.  
208-230 volt, 60 Hz cords have NEMA 6-20P  
plugs.  
This is a cord-connected unit, and must be on a  
separate power supply. Check the dataplate for the  
voltage, ampacity and maximum fuse size and per  
the dataplate use fuses or HACR circuit breakers.  
Follow All Local Codes - This Unit Must Be  
Grounded. Do not use extension cords and do not  
disable or by-pass ground prong on electrical plug.  
Final Check List  
After connections,  
11. Have any water filter cartridges been replaced?  
1. Wash out the bin. If desired, the interior of the  
bin could be sanitized.  
12. Have all required kits and adapters been  
properly installed?  
2. Locate the ice scoop (if supplied) and have it  
available for use when needed.  
Final Check List:  
1. Is the unit located indoors in a controlled  
environment?  
2. Is the unit located where it can receive  
adequate cooling air?  
3. Has the correct electrical power been supplied  
to the machine?  
4. Have all the water supply connections been  
made?  
5. Have all the drain connections been made?  
6. Has the unit been leveled?  
7. Have all unpacking materials and tape been  
removed?  
8. Is the water pressure adequate?  
9. Have the drain connections been checked for  
leaks?  
10. Has the bin interior been wiped clean or  
sanitized?  
May 2008  
Page 9  
 
 
CU1526, CU2026, CU3030  
User Manual  
Initial Start Up  
1. Remove left front louver. Check machine for  
any packing or wires rubbing moving parts.  
Note location of control board at the left.  
it’s been on steady for a few seconds Harvest  
will begin.  
The display shows an H. The hot gas valve opens,  
the air cooled fan motor(s) shut off and the harvest  
assist mechanism is activated. The purge valve  
opens to drain some water, when it does the float  
valve opens to refill the reservoir. After a few  
seconds the purge valve closes but the float valve  
continues to fill the reservoir. Harvest continues  
until the ice is released as a unit and forces the  
curtain to open. When the curtain opens it signals  
the controller which returns the unit to a freeze  
cycle.  
2. Switch the on off  
switch to On.  
Power Status Water De-scale  
3. Switch on the  
electrical power  
to the machine.  
Observe that  
some of the  
Sanitize  
On  
Off  
Technician Section  
Code  
Description  
Freeze Cycle  
Freeze Cycle is Pending  
Harvest Cycle  
Manual Harvest  
Bin is Full  
Clean Cycle  
Board Locked  
Test Mode  
F
F
H
H
b
C
L
d
O
E
1
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flashes.  
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Manual  
Harvest  
Clean  
Code  
Display  
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flashes.  
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Control Operation  
-
See Manual  
Water Light On - Restore water supply to  
machine.  
Off  
Self Test Failed  
De-Scale Light On - Clean and sanitize  
machine.  
flashes.  
Max Freeze  
Max Freeze Time Shut Down  
Max Harvest Retrying  
-
Retrying  
1
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flashes.  
control’s  
2
2
3
4
5
7
8
-
Flush Setting - To Change: Depress Off  
for seconds. Press On to select purge  
(1-5) setting or A for Automatic.  
Test Mode Depress Off for seconds,  
then depress Clean for seconds.  
Recall Diagnostic Codes Depress Off  
for seconds. Press Harvest repeatedly  
to go from most recent to oldest of 10.  
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Max Harvest Time Shut Down  
Slow Water Fill  
High Discharge Temp  
Sump Temp Sensor Failure  
Discharge Temp Sensor Failure  
3
indicator lights  
glow and its  
display shows O.  
-
3
3
-
flashes  
Short Freeze Retrying  
-
3
8 . . . . . . . . . . . . Short Freeze - Thin ice  
All Upper Lights Flashing Unit Remotely  
Locked Out Contact Leasing Company  
4
-
Reset from Code 1, 2,  
Off then Depress On.  
4
or  
8
-
Depress  
-
Component Operation Indicator Lights  
4. Open the water  
supply valve.  
9. Check the ice harvested for proper bridge  
thickness. The ice bridge is factory set at 1/8  
inch. If needed, adjust bridge thickness. Do  
NOT make it too thin.  
02-4302-01  
5. Push and  
release the ON button. The code display will  
begin to blink F. Be sure front On/Off switch is  
in the ON position.  
10. Return the louver to its normal position and  
secure it to the machine.  
11. Instruct the user in the operation of the  
machine and its maintenance requirements.  
The purge valve opens and the water pump starts.  
In a few seconds the purge valve closes and the  
water pump stops. Water will flow into the machine  
until the reservoir is full. The hot gas valve and  
harvest assist device will activate, then the  
compressor and water pump will start. If it’s an air  
cooled model the fan(s) motors will begin to turn a  
few moments after the compressor starts. The  
display will show a continuous F. Five seconds later  
the hot gas valve will close and the harvest assist  
device will return to its standby position. Warm air  
will be discharged from air cooled models.  
12. Fill out and mail the warranty registration form.  
Write the day, month and year of initial start up  
here:  
_______________________________________  
Typical Ice Making Cycle Times (minutes).  
Listed times are for clean machines in proper  
installations. Cycle length at startup will be longer  
until the system stabilizes.  
6. Observe the Ready for Harvest indicator light.  
It may blink early in the cycle, that is normal.  
The control will ignore that signal for the first 6  
minutes of freeze.  
70oF air /  
50oF. water  
90oF. air /  
70oF. water  
Model  
7. During the Freeze cycle move the curtain and  
observe that the SW1 or SW2 light on the  
control board blinks On when the curtain  
moves away from the evaporator and Off when  
returned to its normal position.  
CU1526A  
CU1526W  
CU2026A  
CU2026W  
CU3030A  
CU3030W  
22-25  
21-24  
15-18  
15-18  
12-15  
10-13  
36-29  
28-31  
25-28  
20-23  
19-22  
15-18  
Note: Moving the curtain during the Freeze cycle  
has no affect on control function, but will cause  
water to flow into the bin.  
8. When enough ice has frozen, the Ready for  
Harvest indicator light will be on steady. After  
May 2008  
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CU1526, CU2026, CU3030  
User Manual  
Adjustments  
Bridge Thickness - For the Service Tech Only  
1/8-3/16"  
bridge  
1. Remove left louver, locate controller on and off  
switches.  
2. Push and hold Off till the machine stops.  
3. Remove curtain.  
4. Use a hex wrench and rotate the bridge  
thickness adjustment screw in 1/8 turn  
increments CW to increase bridge thickness.  
Rotate CCW to decrease bridge thickness.  
Too Big  
Ice Bridge Thickness Measurement  
Too Small  
Just Right  
Caution: Do not make the bridge too thin or the  
machine will not harvest properly. Bridge thickness  
adjustments are not covered by warranty.  
Adjustment  
Screw  
5. Return curtain and louver to their normal  
positions.  
6. Push and release the On button. Check next  
harvest of ice. Repeat steps 1-6 if needed.  
Water Purge Setting  
The water purge is factory set to the automatic  
position, suitable for most water conditions. The  
setting can be changed to one of 5 manual settings  
or left on automatic.  
Bridge Thickness Adjustment Mechanism  
To set purge:  
Setting  
Water Type  
1. Switch the machine OFF by holding the Off  
button in until a number or the letter A shows  
on the display.  
1
2
3
4
5
A
Minimum - RO water or equivalent  
Moderate - Low TDS, non RO  
Standard - for typical water  
Heavy - High TDS  
2. Press and release the On button repeatedly  
until the number on the display corresponds to  
the desired setting.  
Maximum - Very high TDS  
Automatic - Factory setting  
3. Press and release the Off switch again to  
return to the normal control state.  
Note: Water cooled models, the refrigeration  
system discharge pressure is factory set at 245  
PSIG, which should yield a freeze cycle discharge  
water temperature of about 105-110 degrees F.  
Adjust if necessary.  
May 2008  
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CU1526, CU2026, CU3030  
User Manual  
Use and Operation  
Once started, the ice machine will automatically  
make ice until the curtain is held open by the ice at  
the top of the pile. The typical ice level when the  
machine is off will be several inches below the door  
sill. When ice level drops from use or meltage, the  
ice machine will resume making ice. If a small  
cluster of ice is holding the curtain open, open the  
curtain slightly to release it. The machine should  
resume making ice in a few minutes.  
Tip: Scoop the ice to the front and back of the bin  
to maximize storage.  
There are four indicator lights under the bin that  
provide information on the condition of the  
machine.  
Ice Level When Bin Is Full  
Indicator Lights:  
• Power  
• Status  
• Water  
• De-scale & Sanitize  
Indicator Lights & Their Meanings  
Status Water  
De-Scale &  
Sanitize  
Power  
Steady Green Normal  
Normal  
-
-
-
-
Self Test  
Blinking Green  
Failure  
Switching on or off  
Diagnostic shut down, or, if making  
ice, temperature sensor failure  
Lack of  
water  
Yellow  
-
-
Blinking  
Yellow  
Time to de-scale  
and sanitize  
-
-
-
-
-
-
Light Off  
In Cleaning mode  
All blinking  
Unit remotely shut off and locked out - check with leasing company.  
If the Water light is on, the machine has sensed a  
lack of water. Check the water supply to the  
machine. The water could have been shut off or the  
water filter cartridges might need to be changed.  
Note: A Component Indicator Light switches ON to  
indicate that the component is operating.  
Note: There are two Curtain Switch lights, SW1 and  
SW2. These single plate models have one curtain  
switch light on all the time, as a curtain switch light  
is ON when a curtain is either open or not present.  
If the De-Scale light is on, the machine has  
determined that it needs to be cleaned. Contact an  
authorized Scotsman service agent and have the  
machine cleaned, de-scaled and sanitized.  
May 2008  
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CU1526, CU2026, CU3030  
User Manual  
Control Switches  
There is a front on and off switch, located in the top  
center of the louvers. Switching this switch Off will  
immediately stop the machine. Switching it back on  
will cause the machine to restart in a timed harvest  
cycle. When that cycle is complete, normal ice  
making will resume.  
Ice  
The cuber drops ice in large sections. That ice will  
break up into random parts as it falls into the bin,  
but some large sections may remain on top of the  
ice in the bin. When removing ice, tap the groups of  
ice with an ice scoop to separate them into smaller  
units.  
Using the ice will help to level it out and allow the  
machine to fill it to its maximum level.  
Heat  
Air cooled models will generate heat when in  
operation. That heat is discharged out the front of  
the cabinet.  
Noise  
The ice machine will make noise when it is in ice  
making mode. The compressor, fan motor(s) if air  
cooled and water pump all produce some sound. It  
is also normal to hear some cracking just before  
the harvest cycle begins. In addition, during the  
harvest cycle the harvest assist solenoid will click  
twice as it pushes the ice out and returns to its  
normal position. The ice harvests as a unit or slab,  
which makes some noise when it impacts the bin.  
These noises are all normal for this machine.  
The controller (located inside the cabinet) also has  
on and off switches, which can also switch the  
machine on and off, but their operation is different:  
To switch the machine OFF, push and release the  
Off button. The machine will shut off at the end of  
the next cycle. To shut the machine off  
immediately, push and hold the Off button for 3  
seconds.  
To switch the machine ON, push and release the  
On button. The machine will go through a start up  
process and then resume ice making.  
May 2008  
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CU1526, CU2026, CU3030  
User Manual  
Cleaning, Sanitation and Maintenance  
This ice system requires three types of maintenance:  
• Remove the build up of mineral scale from the ice machine’s water system and sensors.  
• Sanitize the ice machine’s water system and the ice storage bin.  
• Clean or replace the air filter and clean the air cooled condenser (air cooled models only).  
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.  
Note: The front On/Off switch must be in the ON  
position during the scale removal and sanitation  
process.  
7. Allow the ice machine scale remover to  
circulate in the water system for at least 10  
minutes.  
8. Push and release the Clean button again. The  
yellow Clean light will be on continuously and  
the machine will drain and refill the reservoir  
repeatedly to purge out the ice machine scale  
remover and residue.  
1. Remove the left front louvered panel.  
2. Remove the top panel.  
3. If the machine is operating, push and release  
the Harvest button. When the machine  
completes the Harvest cycle it will stop. If the  
bin is full (b shows in display) push and release  
the Off button.  
9. Allow the drain and refill process to continue for  
at least 20 minutes.  
10. Push and release the Off button. The clean  
cycle will stop and the display will show O.  
4. Remove all ice from the storage bin  
Note: If unit has not been de-scaled for an  
extended period of time and significant mineral  
scale remains, repeat steps 5-10.  
5. Push and release the Clean button. The yellow  
Clean light will blink and the display will show  
C. The machine will drain the reservoir and refill  
it. Go onto the next step when the reservoir has  
filled.  
11. Mix a cleaning solution of 1 oz of ice machine  
scale remover to 12 ounces of water.  
Ice machine scale remover  
contains acids. Acids can  
cause burns.  
12. Locate curtain, push in on edge of curtain by  
pivot pin to release it. Pull curtain out of  
machine.  
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.  
13. Remove water distributor from ice machine.  
Inspect distributor for restricted orifice holes.  
Be sure all holes are fully open.  
Pour 8 ounces of Scotsman Clear 1 ice  
machine scale remover into the reservoir.  
6.  
May 2008  
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CU1526, CU2026, CU3030  
User Manual  
23. Push and release the On button to resume ice  
making.  
24. Return the top panel and front louvered panel  
to their normal position and secure with the  
original fasteners.  
Inspect Orifice Holes  
Air cooled condenser filter  
1. Remove left front grill .  
Inspect Water Distributor  
2. Wash the dust and grease off the filter.  
3. Return it to its original position.  
14. Locate ice thickness sensor. Squeeze  
mounting legs together to release sensor.  
Wash the metal surfaces of the sensor and the  
adjustment screw with ice machine scale  
remover solution. Also wash the water  
distributor and curtain with the ice machine  
cleaner solution.  
Do not operate the machine without the filter in  
place except during cleaning.  
Air cooled condenser  
15. Locate water sensor. Squeeze catches  
together and pull up to remove sensor. Wash  
metal surfaces of sensor with ice machine  
scale remover solution.  
If the machine has been operated without a filter  
the air cooled condenser fins will need to be  
cleaned.  
They are located under the fan blades. The  
services of a refrigeration technician will be  
required to clean the condenser.  
16. Mix a solution of sanitizer.  
Note: A possible sanitizing solution may be made  
by mixing 1 ounce of liquid household bleach with 2  
gallons of warm (95-115oF.) potable water.  
Exterior Panels  
The front and side panels are durable stainless  
steel. Fingerprints, dust and grease will require  
cleaning with a good quality stainless steel cleaner.  
17. Thoroughly wash all surfaces of the ice  
thickness sensor, water level sensor, curtain  
inside of the top panel and the water distributor  
with the sanitizer solution.  
Water filters  
18. Wash all interior surfaces of the freezing  
compartment, including storage bin liner with  
the sanitizer solution.  
If the machine has been connected to water filters,  
check the cartridges for the date they were  
replaced or for the pressure on the gauge. Change  
cartridges if they’ve been installed more than 6  
months or if the pressure drops too much when the  
ice machine fills with water.  
19. Return water level sensor, ice thickness  
sensor, water distributor and curtain to their  
normal positions.  
20. Push and hold the clean button to drain the  
reservoir. Push and release the clean button  
again and when the purge valve indicator light  
goes out, immediately pour the remaining  
cleaning solution into the reservoir.  
21. Circulate the sanitizer solution for 10 minutes,  
then push and release the Clean button.  
22. Allow the water system to be flushed of  
sanitizer for at least 20 minutes, then push and  
release the Off button.  
May 2008  
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CU1526, CU2026, CU3030  
User Manual  
What to do before calling for service  
Reasons the machine might shut itself off:  
To Manually Reset the machine.  
• Lack of water.  
• Push and release the Off button.  
• Freeze cycle takes too long.  
• Harvest cycle takes too long.  
• High discharge temperature.  
• Controller self test failure.  
• Push and release the On button.  
To Shut the Machine Off:  
Move the On Off switch to the Off position.  
or, at the controller  
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.  
Push and hold the Off button for 3 seconds or until  
the machine stops.  
Power Status Water De-scale  
2. Has power been shut off to the ice machine? If  
yes, the ice machine will automatically restart when  
power is restored.  
Sanitize  
On  
Off  
Technician Section  
3. Has someone shut the water off to a water  
cooled unit? If yes, after the water supply has been  
restored the ice machine may need to be manually  
reset.  
Code  
Description  
. . . . . . . . . . Freeze Cycle  
flashes. . . . Freeze Cycle is Pending  
. . . . . . . . . . Harvest Cycle  
flashes. . . . Manual Harvest  
F
F
H
H
Manual  
Harvest  
Clean  
Code  
Display  
b . . . . . . . . . . Bin is Full  
C . . . . . . . . . . Clean Cycle  
L . . . . . . . . . . Board Locked  
d . . . . . . . . . . Test Mode  
O . . . . . . . . . . Off  
Control Operation - See Manual  
Water Light On - Restore water supply to  
machine.  
4. Is the curtain open because some ice is stuck  
under it? If so, remove the ice and the machine  
should start in a few minutes.  
E . . . . . . . . . . Self Test Failed  
De-Scale Light On - Clean and sanitize  
machine.  
1
flashes. . . . Max Freeze - Retrying  
1 . . . . . . . . . . . Max Freeze Time Shut Down  
flashes. . . . Max Harvest - Retrying  
2
Flush Setting - To Change: Depress Off  
for 3 seconds. Press On to select purge  
(1-5) setting or A for Automatic.  
2 . . . . . . . . . . Max Harvest Time Shut Down  
3 . . . . . . . . . . Slow Water Fill  
4 . . . . . . . . . . High Discharge Temp  
5 . . . . . . . . . . Sump Temp Sensor Failure  
7 . . . . . . . . . . Discharge Temp Sensor Failure  
Test Mode - Depress Off for 3 seconds,  
then depress Clean for 3 seconds.  
Note: Curtain can be removed & replaced anytime  
the machine is in a standby mode or when it is in a  
freeze cycle. However, removal of the curtain  
during freeze will result in water flowing into the  
bin. Removal of the curtain during harvest  
terminates harvest at that point and, if left off, will  
result in the machine shutting off.  
Recall Diagnostic Codes - Depress Off  
for 3 seconds. Press Harvest repeatedly  
to go from most recent to oldest of 10.  
8
flashes . . . Short Freeze - Retrying  
8 . . . . . . . . . . . . Short Freeze - Thin ice  
All 4 Upper Lights Flashing - Unit Remotely  
Locked Out - Contact Leasing Company  
Reset from Code 1, 2, 4 or 8 - Depress  
Off then Depress On.  
Component Operation Indicator Lights  
02-4302-01  
May 2008  
Download from Www.SomanuaPls.acogme. A1ll6Manuals Search And Download.  
 
SCOTSMAN ICE SYSTEMS  
775 Corporate Woods Parkway, Vernon Hills, IL 60061  
800-533-6006  
www.scotsman-ice.com  
17-3234-01  
 

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