Vollrath Stoelting U411 User manual

Model U411
OPERATORS MANUAL
Manual No. 513680 Rev.0

This manual provides basic information about the machine. Instructions and suggestions are
given covering its operation and care.
The illustrations and specifications are not binding in detail. We reserve the right to make
changes to the machine without notice, and without incurring any obligation to modify or pro-
vide new parts for machines built prior to date of change.
DO NOTATTEMPT to operate the machine until instructions and safety precautions in this
manual are read completely and are thoroughly understood. If problems develop or questions
arise in connection with installation, operation, or servicing of the machine, contact Stoelting.
Stoelting Foodservice Equipment
502 Highway 67
Kiel, WI 53042-1600
U.S.A.
Main Tel: [phone]
Fax: [phone]
Customer Service: 888.429.5920
Fax: [phone]
Email: [email protected]
© 2014 PW Stoelting, LLC
stoeltingfoodservice.com

Safety Alert Symbol:
This symbol Indicates danger, warning or caution.
Attention is required in order to avoid serious per-
sonal injury. The message that follows the symbol
contains important information about safety.
Signal Word:
Signal words are distinctive words used throughout
this manual that alert the reader to the existence and
relative degree of a hazard.
CAUTION
The signal word “CAUTION” indicates a potentially
hazardous situation, which, if not avoided, may result
in minor or moderate injury and equipment/property
damage.
A Few Words About Safety
Safety Information
Read and understand the entire manual before
operating or maintaining Stoelting equipment.
This manual provides the operator with information
for the safe operation and maintenance of Stoelting
equipment. As with any machine, there are hazards
associated with their operation. For this reason safety
is emphasized throughout the manual. To highlight
specific safety information, the following safety defini-
tions are provided to assist the reader.
The purpose of safety symbols is to attract your at-
tention to possible dangers. The safety symbols, and
their explanations, deserve your careful attention
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions
or warnings they give are not substitutes for proper
accident prevention measures.
If you need to replace a part, use genuine Stoelting
parts with the correct part number or an equivalent
part. We strongly recommend that you do not use
replacement parts of inferior quality.
WARNING
The signal word “WARNING” indicates a potentially
hazardous situation, which, if not avoided, may result
in death or serious injury and equipment/property
damage.
CAUTION
The signal word “CAUTION” not preceded by the
safety alert symbol indicates a potentially hazardous
situation, which, if not avoided, may result in equip-
ment/property damage.
NOTE (or NOTICE)
The signal word “NOTICE” indicates information or
procedures that relate directly or indirectly to the
safety of personnel or equipment/property.

Section Description Page
1 Description and Specifications
1.1 Description..................................................................................................1
1.2 Specifications .............................................................................................2
2 Installation Instructions
2.1 Safety Precautions .....................................................................................3
2.2 Shipment and Transit..................................................................................3
2.3 Machine Installation....................................................................................3
2.4 Installing Wiring..........................................................................................3
2.5 Mix Pump....................................................................................................4
A. Mix Pump Hose Installation..................................................................................4
B. Mix Pickup Hose Installation................................................................................5
2.6 IntelliTec2™ Setup......................................................................................6
3 Initial Set-Up and Operation
3.1 Operator’s Safety Precautions ...................................................................9
3.2 Operating Controls and Indicators..............................................................9
A. IntelliTec™ Touchpad...........................................................................................10
B. Spigot Switch .......................................................................................................10
3.3 Disassembly of Parts..................................................................................10
A. Removing Mix ......................................................................................................10
B. Remove Front Door..............................................................................................11
C. Remove Auger .....................................................................................................11
3.4 Cleaning Disassembled Parts ....................................................................11
3.5 Sanitizing Parts...........................................................................................12
3.6 Cleaning the Machine.................................................................................12
3.7 Assembling the Machine ............................................................................12
3.8 Sanitizing....................................................................................................13
3.9 Freeze Down and Operation ......................................................................14
3.10 Mix Information...........................................................................................14
3.11 Operation of Mix Pump...............................................................................14
3.12 Mix Pump Cleaning ....................................................................................15
3.13 Disassembly and Inspection of Removable Parts......................................15
TABLE OF
CONTENTS

Section Description Page
4 Maintenance and Adjustments
4.1 Overrun Adjustment....................................................................................17
4.2 Mix Pump Hose Reposition........................................................................17
4.3 Mix Pump Hose Replacement....................................................................18
4.4 Fine Consistency Adjustment.....................................................................19
4.5 Drive Belt Tension Adjustment....................................................................19
4.6 Condenser Cleaning (Air-Cooled Machines)..............................................19
4.7 Preventative Maintenance..........................................................................19
4.8 Extended Storage.......................................................................................19
5 Troubleshooting
5.1 Error Codes................................................................................................21
5.2 Troubleshooting - Error Codes ...................................................................21
5.3 Troubleshooting - Machine.........................................................................23
5.4 Troubleshooting - Mix Pump.......................................................................24
6 Replacement Parts
6.1 Brushes, Decals and Lubrication................................................................27
6.2 Trays...........................................................................................................27
6.3 Auger Shaft and Front Door Parts..............................................................28
6.4 Cab Tubing.................................................................................................29

Operators Manual #513680 Rev.0 1 U411 Model Machines
1.1 DESCRIPTION
The Stoelting U411 floor model machine is pressure fed.
It is equipped with fully automatic controls to provide a
uniform product.
This manual is designed to assist qualified service per-
sonnel and operators with installation, operation and
maintenance of the U411.
SECTION 1
DESCRIPTION AND SPECIFICATIONS
Figure 1-2 Dimensions
Figure 1-1 Model U411 I2 Machine

Operators Manual #513680 Rev.0 2 U411 Model Machines
1.2 SPECIFICATIONS
Model U411
Dimensions Machine with crate
width 19-1/8’’ (48,6 cm) 27’’ (68,6 cm)
height 68-3/8’’ (173,7 cm) 78’’ (198,1 cm)
depth 37-5/8’’ (95,6 cm) 48’’ (121,9 cm)
Weight 450 lbs (204,1 kg) 650 lbs (294,8 kg)
Electrical 1 Phase, 208-240 VAC, 60Hz 3 Phase, 208-240 VAC, 60Hz
running amps 18A 15A
connection type NEMA L6-30P NEMA L15-30P
Compressor 15,000 Btu/hr Scroll™ Compressor
Cabinet - 1,300 Btu/hr Compressor (R-134a)
Drive Motor 2 hp
Air Flow Air cooled units require 3” (7,6 cm) air space at the back and sides.
Plumbing Fittings Water cooled units require 1/2” N.P.T. water and drain fittings.
Hopper Volume 8 gallons (30,29 liters)
Freezing Cylinder
Volume 1.33 gallon (5,03 liters)

Operators Manual #513680 Rev.0 3 U411 Model Machines
SECTION 2
INSTALLATION INSTRUCTIONS
2.1 SAFETY PRECAUTIONS
Do not attempt to operate the machine until the safety
precautionsand operatinginstructions inthis manualare
read completely and are thoroughly understood.
Take notice of all warning labels on the machine. The la-
bels have been put there to help maintain a safe working
environment.Thelabelshavebeendesignedtowithstand
washing and cleaning. All labels must remain legible for
thelifeofthemachine.Labelsshouldbecheckedperiodi-
callytobesuretheycanberecognizedaswarninglabels.
If danger, warning or caution labels are needed, indicate
thepartnumber,typeoflabel,locationoflabel,andquantity
required along with your address and mail to:
STOELTING
ATTENTION: Customer Service
502 Hwy. 67
Kiel, Wisconsin 53042
2.2 SHIPMENT AND TRANSIT
Themachinehasbeenassembled,operatedandinspected
at the factory. Upon arrival at the final destination, the
entire machine must be checked for any damage which
may have occurred during transit.
With the method of packaging used, the machine should
arriveinexcellentcondition.THECARRIERISRESPON-
SIBLE FOR ALL DAMAGE IN TRANSIT, WHETHER
VISIBLE OR CONCEALED. Do not pay the freight bill
until the machine has been checked for damage. Have
the carrier note any visible damage on the freight bill. If
concealeddamageand/or shortage is found later,advise
the carrier within 10 days and request inspection. The
customer must place a claim for damages and/or short-
ages in shipment with the carrier. Stoelting, Inc. cannot
make any claims against the carrier.
2.3 MACHINE INSTALLATION
WARNING
Installation must be completed by a qualified
electrician/refrigeration specialist.
Incorrect installation may cause personal injury,
severe damage to the machine and will void fac-
tory warranty.
Installation of the machine involves moving the machine
close to its permanent location, removing all crating, set-
ting in place, assembling parts, and cleaning.
PRIOR TO INSTALLATION
A. Locatea copyoftheservicecontactfile (info.txt).
B. Modify the info.txt file with information from the
servicecompanyusingtheinstructionsinthefile.
C. Put the service contact file onto the root level of
a USB flash drive (do not put the files into any
folder).
INSTALLATION
A. Uncrate the machine.
B. Install the four casters. Turn the threaded end
intothemachineuntil nothreadsareshowing.To
level,turnoutcastersnomorethan1/4”maximum,
then tighten all jam nuts.
C. The machine must be placed in a solid level
position. NOTE
Accurate leveling is necessary for correct drainage
of freezing cylinder and to insure correct overrun.
D. Machines with air cooled condensers require a
minimum of 6” (15,2cm) space on all sides and
back for proper circulation.
NOTE
In order for the condenser fan motor to work the
left side needs to be connected to a power source.
E. Inair-cooledmachines,useavoltmetertomeasure
incoming voltage. If the supply voltage is 215 or
less, remove the right side panel and move the
voltageselectortoggleswitchtothe208Vposition.
NOTE
Supply voltage must be checked to make sure the
fan motor operates properly.
F. Machines that have a water cooled condenser
require 1/2” NPT supply and drain fittings.
2.4 INSTALLING WIRING
A. Refer to the nameplate on the side panel of the
machineforspecificelectricalrequirements.Make
sure the power source in the building matches
thenameplate requirements.Bringthewiresinto
the junction boxes through the access holes in
the bottom rear of the freezer.
NOTE
Three phase freezers in areas of unbalanced elec-
tricalloads require specialattention whenconnect-
ing input electrical power. The unbalanced leg of
power (called wild or high) must be connected to
L2 in the junction box.

Operators Manual #513680 Rev.0 4 U411 Model Machines
B. Remove the back panel and the junction box
cover located at the bottom of the machine.
C. Install permanent wiring according to local code.
D. Check the auger shaft rotation by pressing the
Main Power On/Off button and pressing the On/
Off button. The Motor Calibration screen will be
displayed.
E. Move the cursor over the CYLline and press the
SEL button.
F. Augershaftrotationisclockwiseasviewedthrough
the clear front door.
G. Presstheleft arrow button to stop the augerafter
checking the rotation.
NOTE
Press the left arrow button to exit the calibration
beforethe 5 minutetimer expires.Motor calibration
will be completed in Section 2.6 and must be done
with sanitizer in the freezing cylinders.
2.5 MIX PUMP
A. MIX PUMP HOSE INSTALLATION
Follow the steps below to install the mix pump hose in
the cabinet part of the machine.
1. Turn the mix pump on by pressing the Pump On/
Off button on the touchpad.
2. Feed one end of the mix pump hose into the
entering or pickup hose side (left) of black cover
(Fig 2-2). NOTE
Feedthe tube into theclamp sothe natural curveof
the tube is towards the outside of the black cover.
This prevents the hose from looping around the
black cover twice.
3. Gently push the hose into the black cover until it
begins to feed.
4. Allow the hose to feed itself through the pump
until about 6” (15cm) remains on the entering
side.
5. Turn the pump off.
6. Connect the mix pump hose to the elbow fitting
(located on the left side of the mix line manifold)
using a small hose clamp. Be careful not to twist
the mix hose.
7. Turn the pump on.
8. Allow the remaining 6” (15cm) of tubing to feed
through pump until the hose adapter prevents
further feeding.
9. Turn the pump off.
CAUTION
Risk of Product Damage
Air/Mix Tee must remain below the black cover
clamp. If the Tee is above the pump, mix may drain
into the air compressor resulting in pump damage.
Figure 2-2 Mix Hose Installation
6” (15cm)

Operators Manual #513680 Rev.0 5 U411 Model Machines
10. Connect the free end of the mix pump hose to
the 3-way Tee (Fig. 2-3). When all connections
are complete, the 3-way Tee must be lower than
the black pump housing.
B. MIX PICKUP HOSE INSTALLATION
The machine may be connected to the standard mix
container or up to three prepacked mix bags. Follow the
instructions below that match your configuration.
Standard Connection:
1. Place the mix pickup assembly through the hole
in the cover and install the retaining clip.
2. Connecta21”lengthof1/2”IDplasticfoodgrade
tubing to the mix pickup assembly and secure
with a hose clamp.
3. Connect the elbow fitting to the free end of the
tubing. Connect the opposite end of the elbow
to 1/4” ID tan tubing on the left side of the pump
head. Secure with hose clamps (Fig. 2-3).
WhenUsingBagConnectionSystem(BCS)withThree
Bags (optional kit #2183987):
The position of the three bags in the mix container is
important. The bag that is connected nearest the outlet
of the manifold will drain last and should be placed at
the back of the mix container. The mix low level indicator
relies on proper bag placement.
1. Connect 1/2” ID plastic food grade tubing to a
bag adapter. Secure with hose clamps.
2. Slidethehoseclipoverfreeendof1/2”IDplastic
foodgradetubing.Attachthefreeendofthetubing
to a manifold adapter. Secure with a large hose
clamp or equivalent.
3. Push the manifold adapter with spring and valve
into the left port (nearest the manifold outlet) of
themixinletmanifoldandsecurewith a retaining
clip. (Fig. 2-4).
4. Repeat steps 1 to 3 for the middle port and for
the right port of the mix inlet manifold.
5. Place three mix bags into the mix container.
6. Connectthebagadapterattachedtotheleft side
of the manifold (closest to the mix outlet) to the
mix bag in the back of the mix container.
7. Connect the bag adapter attached to the middle
of the manifold to the mix bag in the middle of
the mix container.
8. Connect the bag adapter attached to the right
side of the manifold (farthest from the mix outlet)
to the mix bag in the front of the mix container.
Figure 2-3 Mix Pump Connections for Standard Mix Container

Operators Manual #513680 Rev.0 6 U411 Model Machines
When Using Bag Connection System (BCS) with One
or Two Bags (optional kit #2183987):
When connecting one or two bags, the manifold adapt-
ers must be installed closest to the manifold outlet and
the manifold plug(s) must be placed farthest from the
manifold outlet.
1. Connect 1/2” ID plastic food grade tubing to a
bag adapter. Secure with hose clamps.
2. Slidethehoseclipoverthefreeendofthetubing.
Attach the free end of the tubing to a manifold
adapter. Secure with a large hose clamp.
3. Push the manifold adapter with spring and valve
into the left port (nearest the manifold outlet) of
the mix inlet manifold and secure with retaining
clip. (See Figure 2-4).
4. If using two mix bags, repeat steps 1 to 3 for the
middle port.
5. Install a manifold plug into each empty inlet and
secure with a retaining clip.
6. Placethemixbag(s)into
the mix container.
7. Connectthebagadapter
attached to the left side
of the manifold (closest
to the mix outlet) to the
mix bag in the back of
the mix container.
Figure 2-4 Bag Connection System (Optional)
Bag Adapter
Manifold
Adapter
Retaining
Clip
Mix Inlet
Manifold
Manifold
Plug
2.6 INTELLITEC2™ SETUP
A. Disassemble, clean, lubricate and assemble the
machine following the steps in Section 3.
B. Fillthe mixcontainerinthecabinetwith sanitizer.
C. Connect power to the machine and press the
Main Power On/Off button.
NOTE
TheCurrentStatusscreenshouldshow“Calibration
Required”. If it does not, go to the Unit Calibration
option in the Utilities menu to complete the calibra-
tion.
D. Press the Pump On/Off button when the Current
Status screen is displayed.

Operators Manual #513680 Rev.0 7 U411 Model Machines
MOTOR CALIBRATION
Before starting the motor calibration, be sure there is
sanitizer in the freezing cylinder.
A. Press the On/Off button. The Motor Calibration
screen will be displayed.
B. Move the cursor to the CYL line and press the
SEL button.
C. After the calibration is complete, press the left
arrow button.
D. Drain the machine of sanitizer.
E. Press the Pump On/Off button.
SETTING CONTACT INFORMATION
A. Plug your USB flash drive into the control if it is
not already plugged in.
B. From the Current Status screen, press the left
arrow button to access the passcode selection
screen. Press the right arrow, SET, and then the
SEL button.
C. Afterthepasswordisaccepted,usethearrowsto
movethecursortotheModifySettingsoptionand
press the SEL button. Then move the cursor to
the User Preferences and press the SELbutton.
D. OntheUserPreferencesscreenmovethecursor
totheContactInformationUSBUpdateandpress
the SEL button.
E. Thescreenwillchangeandshow“FileFound”for
a quick second while it updates the information.
F. Afterupdatingthecontactinformation,thescreen
will show the Service Contact Information page.
G. PresstheleftarrowbuttontogobacktotheCurrent
Status screen and remove the USB flash drive.
SETTING TIME AND DATE
A. Press the right arrow button.
B. Move the cursor to the Modify Settings option
and press the SELbutton. Then move the cursor
to the Time and Date option and press the SEL
button and adjust the settings as required.
1. Pressthe SELbuttontoentertheModify
Time and Date screen.
2. Movethecursortothesettingthatneeds
to be changed and press the SET button.
3. Use the arrow buttons to change the
setting and press the SET button to save the
change.
C. PresstheleftarrowbuttonuntiltheCurrentStatus
screen is displayed.
Figure 2-5
Figure 2-6
Figure 2-7
Figure 2-8
Figure 2-9

Operators Manual #513680 Rev.0 8 U411 Model Machines
SETTING CONSISTENCY
A. Fill the mix container with liquid mix.
B. PressthePumpOn/Offbutton.Primethefreezing
cylinder.Afterthepumpbuttonispressed,mixwill
partiallyfillthefreezingcylinderandthepumpwill
cycle off. After the pump turns off, press the air
bleedvalveonthefrontdoortoprimethefreezing
cylinder. Release the valve and pull outwards.
Make sure the mix level in the freezing cylinder
is above the hub on the auger shaft.
C. Press the Push to Freeze button and let the
machine cycle 4-5 times.
D. Draw product from the barrel immediately after
the compressor cycles off after the fifth time and
testtheproductforconsistencyandtemperature.
E. Adjust the product consistency by increasing or
decreasing the Consist Offset settings. These
settings are under the Modify Settings Basic
Settings menu
F. If the machine short cycles (short on/off
compressor run times), change the settings as
follows:
1. If the product is too soft, increase the
CutIn Consist Offset.
2. If the product is too firm, decrease the
CutIn Consist Offset.
F. After the consistency is set, press the left arrow
buttononcesothattheModifyOperatingSettings
screen is displayed.
SETTING SERVE TIME AND OVERRUN DETAILS
A. Go to theAdvanced Settings (2 of 3) screen and
scrolldowntotheTimetoDispense16ozoption.
B. Timehowlongittakestodispense16ozofproduct
into a cup and change the value in the control.
C. Measure to overrun of the product and change
the value in the control. To measure overrun, do
the following:
1. Zero a scale with an 8 - 16 oz cup.
2. Fill the cup with liquid mix and weigh it.
Make sure the mix is filled to the rim.
3. Fill the cup with frozen product.
4. Scrape the top of the cup with a straight
edge.
5. Weigh the filled cup.
6. Calculatetheoverrunusingthefollowing
equation:
D. Change the value in the control.
E. PresstheleftarrowbuttonuntiltheCurrentStatus
screen is displayed.
SETTING DISCHARGE PRESSURE ON WATER
COOLED MACHINES
A. Water cooled machines require the water
condenser valves to be adjusted to maintain a
235-240 psig discharge pressure.
When adjusting the discharge pressure the
machine must be under a full load with both
cylinders running.

Operators Manual #513680 Rev.0 9 U411 Model Machines
3.2 OPERATING CONTROLS AND INDICATORS
Before operating the machine, it is required that the op-
erator know the function of each operating control. Refer
to Figure 3-1 for the location of the operating controls on
the machine. For the information regarding error codes
displayedonthecontrolpanel,refertothetroubleshooting
section of this manual.
SECTION 3
INITIAL SET-UP AND OPERATION
3.1 OPERATOR’S SAFETY PRECAUTIONS
SAFE OPERATION IS NO ACCIDENT; observe these
rules:
A. Know the machine. Read and understand the
Operating Instructions.
B. Notice all warning labels on the machine.
C. Wearproperclothing.Avoidloosefittinggarments,
and remove watches, rings or jewelry that could
cause a serious accident.
D. Maintain a clean work area. Avoid accidents by
cleaning up the area and keeping it clean.
E. Stay alert at all times. Know which switch, push
button or control you are about to use and what
effect it is going to have.
F. Disconnect power for maintenance. Never
attempt to repair or perform maintenance on the
machineuntilthemainelectricalpowerhasbeen
disconnected.
G. Donotoperateunderunsafeoperatingconditions.
Neveroperatethemachineifunusualorexcessive
noise or vibration occurs.
Figure 3-1 DQU411 I2 Machine Controls
IntelliTec2™ Control
(See Figure 3-2)
Dispense
RateAdjuster
WARNING
Highvoltage will shock,burn or causedeath. Make
sure the display shows the freezing cylinders and
pumpareoff.Iftheyarenot,presstheOn/Offbutton
and Pump button to turn them off prior to disas-
sembling for cleaning or servicing. Do not operate
machine with panels removed.

Operators Manual #513680 Rev.0 10 U411 Model Machines
A. INTELLITEC2™ TOUCHPAD
Main Power On/Off
The Main Power button is used to supply power to the
IntelliTec2™ control, the freezing cylinder circuits and
the storage refrigeration system. When the machine is
first plugged in, the control defaults to the On status with
powertothecabinetonly.IftheMainPowerOn/Offbutton
is pressed when the machine is on, the machine will turn
offand a statusmessage will bedisplayed on thescreen.
Help
Pressing the Help button will display help information
dependant on the cursor’s location. Pressing the Help
button again will exit the help screen.
Selection Button (SEL)
The SEL button is used by service technicians to select
menu options.
Set Button (SET)
The SET button is used by service technicians to save
changes when modifying control settings.
On/Off Button
Powerto the freezing cylindercanthenbecontrolledwith
the On/Off button.
Push to Freeze Button
Pressing the PUSH TO FREEZE button initiates “Serve
Mode”.
Clean Button
The CLEAN button initiates “Clean Mode”.
Pump Button
The PUMP On/Off buttons control power to the pump.
NOTE
If the setting for the pump is automatic, the Pump
On/Off button will not operate the pump and the
display will show the pumps set to automatic.
Arrow Buttons ()
The arrow buttons are used by service technicians to
navigate through the control readings and settings.
B. SPIGOT SWITCH
Thespigotswitchis mounted to the spigot camassembly
behind the header panel. When the spigot is opened to
dispenseproduct,thespigotswitchopensandthe“Serve
Mode” begins.
C. DISPENSE RATE ADJUSTOR
The dispense rate adjustor is located under the header
panel,totheimmediaterightofthespigothandles.Turning
theknobcounterclockwisewilldecreasethedispenserate.
3.3 DISASSEMBLY OF PARTS
Before using the machine for the first time, complete
machine disassembly, cleaning and sanitizing proce-
dures need to be followed. Routine cleaning intervals
and procedures must comply with the local and state
health codes. Inspection for worn or broken parts should
be made at every disassembly of the machine. All worn
or broken parts should be replaced to ensure safety to
boththe operator andthe customer andto maintaingood
machine performance and a quality product. Check the
wear line on the auger flights on a regular basis (Fig.
3-3) and replace as needed. Frequency of cleaning must
comply with the local health regulations.
To disassemble the machine, refer to the following steps:
A. REMOVING MIX
For the first time cleaning the machine, skip to part B.
Remove Front Door.
1. Remove the mix pickup assembly from the mix
container and place it in an empty bucket.
2. Press the On/Off button to turn the cylinder off.
Then press the CLEAN button.
Figure 3-2 IntelliTec2™ Control
Wear Line
Figure 3-3 Auger Flight Wear

Operators Manual #513680 Rev.0 11 U411 Model Machines
3. When the product in the barrel has melted (after
about 5 minutes), press the CLEAN button and
open the spigot to drain. Close the spigot.
4. Fill the bucket with 2 gallons (8 liters) of cool tap
water and put the mix pickup assembly into the
bucket.
5. Press the CLEAN button and press the air bleed
valve on the front door. Release the valve when
water is within 1” of the valve. Run the machine
for 30 seconds. Press the CLEAN button and
drain the machine.
NOTE
If the water does not drain clear, repeat steps 4-5.
6. Preparecleaningsolutionbymixing2oz.ofStera-
Sheen Green Label or equivalent in 2 gallons of
90° to 110°F (32° to 43°C) water. Repeat steps
4-5 with the cleaning solution.
7. TurnthemachineoffbypressingtheMainFreezer
Power Off/On button.
8. Disconnectandremovethemixpickupassembly,
then remove the clip and disassemble. Remove
the check valve, spring and o-rings.
B. REMOVE FRONT DOOR
1. Remove the knobs on the front door and remove
the door by pulling it off the studs.
2. Remove the air bleed valve by unscrewing the
knob while holding the valve stem from behind.
Remove the compression spring and push the
air bleed valve through the rear of the front door.
3. Removethespigotthroughthebottomofthefront
door.
4. Remove all o-rings from parts by first wiping off
thelubricationusingacleantowel.Thensqueeze
the o-ring upward to form a loop (Fig. 3-4). Roll
the o-ring out of the groove.
CAUTION
Do not use any type of sharp object to remove the
o-rings.
C. REMOVE AUGER
1. Remove the front auger support and bushing.
2. Remove the auger assembly from the machine.
Pull the auger out of the machine barrel slowly.
Astheaugerisbeingpulledout,carefullyremove
each of the plastic flights with springs.
3. Keep the rear of the auger tipped up once it is
clear of the freezing cylinder to prevent the rear
seal assembly from dropping.
4. Wipethe splinelubricant off ofthe hexend of the
auger with a paper towel. Remove the rear seal
assembly (Fig. 3-5).
5. Unscrew the springs from the auger flights.
3.4 CLEANING DISASSEMBLED PARTS
Disassembled parts require complete cleaning, sanitiz-
ing and air drying before assembling. Local and state
health codes will dictate the procedure required. Some
statehealth codes require afour sinkprocess (pre-wash,
wash,rinse, sanitize, air dry), whileothersrequireathree
sink process (without the pre-wash step). The following
procedures are a general guideline only. Consult your
local and state health codes for the procedures required
in your location.
A. Disassemble all parts.
B. Placeallfrontdoorandaugerpartsinclean90°to
110°F(32°Cto43°C)waterandwashthoroughly
(four sink procedure only).
C. Placeallpartsin90°to110°F(32°Cto43°C)mild
detergent water and wash thoroughly.
Figure 3-4 Removing O-Ring
Figure 3-5 Rear Seal Assembly

Operators Manual #513680 Rev.0 12 U411 Model Machines
C. Install the stainless steel rear seal adapter into
the rear seal dry (without lubricant). Lubricate
the inside surface of the rear seal adapter and
install it onto the auger shaft. DO NOT lubricate
the outside of the rear auger seal (Fig. 3-6).
D. Lubricate the hex drive end of the auger with a
smallamountofsplinelubricant.Asmallcontainer
of lubricant is shipped with the machine.
E. Screw the springs onto the studs in the plastic
flights. The springs must be screwed into the
flightscompletelytoprovidepropercompression.
F. Install the two plastic flights onto the rear of the
auger and insert it part way into the freezing
cylinder.
G. Installtheremainingplasticflights,pushtheauger
into the freezing cylinder and rotate slowly until
the auger engages the drive shaft.
H. Applyathinlayerofsanitarylubricanttotheinside
and outside of the auger support bushing. Install
thebushingontotheaugersupportandinstallthe
auger support into the front of the auger. Rotate
the auger support so that one leg of the support
points straight up.
I. Assemble the air bleed valve o-ring onto the air
bleed valve. Position the o-ring into the groove
closetothewide part.Applyathinfilmofsanitary
lubricant to the o-ring.
J. Inserttheairbleedvalveintothebackofthefront
door. Install the compression spring onto the air
bleed valve then screw the knob on finger tight.
K. Applyathinlayerofsanitarylubricanttotheo-rings
onthe spigot bodiesand install thespigot bodies
through the bottom of the front door.
L. Fit the front door o-ring into the groove on the
rear of the front door.
D. Rinse all parts with clean 90° to 110°F (32°C to
43°C) water.
E. Sanitize all machine parts following procedures
outlined below.
3.5 SANITIZING PARTS
A. Useasanitizer,mixedaccordingtomanufacturer’s
instructions, to provide a 100 parts per million
strength solution. Mix sanitizer in quantities of
no less than 2 gallons of 90° to 110°F (32°C to
43°C) water. Any sanitizer must be used only in
accordancewiththemanufacturer’sinstructions.
B. Place all parts in the sanitizing solution for 5
minutes, then remove and let air dry completely
before assembling in machine.
3.6 CLEANING THE MACHINE
The exterior should be kept clean at all times to preserve
the luster of the stainless steel.Ahigh grade of stainless
steel has been used on the machine to ease cleanup. To
remove spilled or dried mix, wash the exterior with 90° to
110°F (32°C to 43°C) soapy water and wipe dry.
Do not use highly abrasive materials, as they will mar the
finish.Amildalkalinecleanerisrecommended.Useasoft
clothorspongetoapplythecleaner.Forbestresults,wipe
with the grain of the steel.
A. Clean the rear seal surfaces on the inside of the
freezing cylinders.
B. Using sanitizing solution and the large barrel
brushprovided,sanitizethefreezingcylindersby
dipping the brush in the sanitizing solution and
brushing the inside of the freezing cylinders.
C. Removethedriptraysfromthefrontpanel.Clean
and replace the drip trays.
3.7 ASSEMBLING THE MACHINE
Toassemblethemachineparts,refertothefollowingsteps:
NOTICE
Petrol-Gel sanitary lubricant or equivalent must be
usedwhenlubricationof machine parts is specified.
NOTICE
The United States Department of Agriculture and
theFoodand DrugAdministration require that lubri-
cants used on food processing equipment be certi-
fied for this use. Use lubricants only in accordance
with the manufacturer’s instructions.
A. Assemble all o-rings onto parts dry, without
lubrication. Then apply a thin film of sanitary
lubricant to exposed surfaces of the o-rings.
B. Install the rear seal o-ring. Lubricate the outside
of the rear seal o-ring with sanitary lubricant.
Figure 3-6 Rear Seal Assembly
Spline
Lubricant
Petrol-Gel

Operators Manual #513680 Rev.0 13 U411 Model Machines
B. Makesurethedisplayshowsthefreezingcylinder
is off. If it is not, press the On/Off button to turn
it off. NOTE
If the freezing cylinder is not off, the control will
not go into Clean mode. This is to protect from ac-
cidentally going into Clean mode.
C. Press the Pump button to turn the pump ON
and open the air bleed valve on the front door
by pushing the valve in and holding (see Figure
3-8).
D. Let sanitizing solution fill the freezing cylinder to
theairbleedvalve,thenclosethevalvebypulling
it out to lock in place.
E. PresstheCLEANbuttontostarttheaugerrotating.
F. Checkfor leakswhenthefreezingcylinderis first
pressurized with sanitizing solution.
1. Check for leaks at the front door seals.
2. Check the drain tray located in the front panel
for leaks coming from the rear of the rear auger
seal.
3. Check the inside of the cab unit for leaks at
the hose connections.
G. Use a sanitized soft bristle brush dipped in
sanitizing solution to clean the mix container.
H. After five minutes, open the spigot to drain the
sanitizing solution.
I. When the solution has drained, press the Pump
and Clean buttons to stop the pump and auger.
Allow the freezing cylinder to drain completely.
The machine is now sanitized and ready for adding mix.
M. Place the front door assembly on the mounting
studsandthepushfrontdooragainstthemachine
carefully.
N. Secure the front door to the machine by placing
the knobs on the studs and tightening until finger
tight. Do not overtighten. Proper o-ring seal can
be observed through the transparent front door.
3.8 SANITIZING
Sanitizing must be done after the machine is clean and
just before the machine is filled with mix. Sanitizing the
night before is not effective. However, you should always
clean the machine and parts after using it.
NOTE
The United States Department of Agriculture and
the Food and Drug Administration require that all
cleaning and sanitizing solutions used with food
processing equipment be certified for this use.
Whensanitizingthemachine,refertolocalsanitaryregu-
lationsforapplicablecodesand recommendedsanitizing
products and procedures. The frequency of sanitizing
must comply with local health regulations. Mix sanitizer
accordingtomanufacturer’sinstructions to provide a 100
partsper million strength solution.Mix sanitizerin quanti-
ties of no less than 2 gallons of 90°F to 110°F (32°C to
43°C) water.Allow sanitizer to contact the surfaces to be
sanitized for 5 minutes. Any sanitizer must be used only
in accordance with the manufacturer’s instructions.
CAUTION
Risk of Product Damage
Avoid prolonged contact of sanitizer with machine
parts. Sanitizer may cause corrosion of stainless
steel parts if there is prolonged contact.
A. Prepare 3 gallons of sanitizing solution following
manufacturer’s instructions, and pour it into the
storage container.
Figure 3-8 Air Bleed Valve
Air Bleed
Valve
Figure 3-7 Front Door

Operators Manual #513680 Rev.0 14 U411 Model Machines
3.10 MIX INFORMATION
Mix can vary considerably from one manufacturer to
another. Differences in the amount of butterfat content
and quantity and quality of other ingredients have a
direct bearing on the finished frozen product. A change
in machine performance that cannot be explained by a
technical problem may be related to the mix.
Proper product serving temperature varies from one
manufacturer’s mix to another. Mixes should provide a
satisfactory product in the 20°F to 24°F range. Diet and
low-carb mixes typically freeze to proper consistency at
higher temperatures.
When checking the temperature, stir the thermometer in
the frozen product to get an accurate reading.
Oldmix,ormixthathasbeenstoredattoohighatempera-
ture,canresultinafinishedproductthatisunsatisfactory.
To retard bacteria growth in dairy based mixes, the best
storage temperature range is between 33° to 38°F (0.5°
to 3.3° C).
3.11 OPERATION OF MIX PUMP
The mix pump is operated from the button on the Intel-
liTec2™ touchpad. When the pump button is pressed
On, the mix pump motor will start pumping mix into the
freezing cylinder. When the set pressure is reached, the
mix pump will shut off automatically.
3.9 FREEZE DOWN AND OPERATION
Refer to the following procedures to operate both freez-
ing cylinders.
A. Sanitize immediately before use.
B. Makesurethedisplayshowsthefreezingcylinder
is off. If it is not, press the On/Off button to turn
it off.
C. Fill the storage container with at least 3 gallons
of mix.
D. Attach the mix inlet probe to the container and
place the container in the refrigerated cab.
E. Press the Pump button to turn the pump on.
F. Place a container under the spigot and open the
spigottoallowthemixtoflushoutabout8ounces
(0.23 liters) of sanitizing solution and liquid mix.
Close the spigot.
G. Open the air bleed valve on the front door by
pressing and holding. Hold the valve open until
the mix level in the freezing cylinder is 1/2” from
the air bleed valve.
H. Press the On/Off button for the cylinder.
I. Press the PUSH TO FREEZE button.
J. When the product is ready, the display will read
“SERVE”. Open the spigot to dispense product.
NOTE
Iftheproductconsistencyneedstobeadjusted,use
the Technician passcode and go to the Basic Set-
tings menu. Adjust the CutOut Consistency higher
to increase the consistency or lower to decrease
the consistency. Make adjustments in increments
of 5 for best results.
K. The machine dispenses product at a reasonable
drawrate.Ifthemachineis overdrawn, the result
isasoftproductoraproductthatwillnotdispense
at all. If this occurs, allow the machine to run for
approximately30secondsbeforedispensingmore
product.Adispenserateadjustorislocatedunder
the header panel, to the immediate right of the
spigothandle.Turningtheknobcounterclockwise
will decrease the dispense rate.
L. Do not operate the machine when the MIX LOW
message is displayed. Refill the mix container
immediately. NOTE
After a preset number of freezing cycles in Serve
mode, the control will enter the sleep mode and re-
mainthereuntil someone draws productor presses
the PUSH TO FREEZE button. In the sleep mode,
themachinewillkeeptheproductbelow41°F(5°C).
Sleep mode does not take the place of cleaning
and sanitizing. Federal, State, and local regulatory
agencies determine frequency of cleaning and
sanitizing.
Figure 3-9 Mix Pump Hose Routing
Air Line
Mix
Intake Mix
Discharge
3-way
Tee
Air/mix to
Freezing
Cylinder