Vollrath STOELTING O431RC User manual

Model O431RC
OPERATORS MANUAL
Manual No. 513664 Rev.2

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 SafetyPrecautions.....................................................................................3
2.2 Shipment and Transit.................................................................................3
2.3 FreezerInstallation ....................................................................................3
2.4 Installing Permanent Wiring .......................................................................3
2.5 Mix Pump...................................................................................................4
A. Mix Pump Hose Installation .................................................................................4
B. Mix Pickup Hose Installation ...............................................................................4
C. Mix Low Level Indicator Adjustment ....................................................................6
3 Initial Set-Up and Operation
3.1 Operator’s Safety Precautions ...................................................................7
3.2 Operating Controls and Indicators .............................................................7
3.3 Important Information Regarding Cleaning and Sanitizing .........................9
3.4 Disassembly of Freezer Parts....................................................................10
A. Disassembly of Front Door..................................................................................10
B. Disassembly of Auger .........................................................................................11
3.5 Cleaning Disassembled Parts....................................................................11
3.6 Sanitizing Freezer Parts.............................................................................11
3.7 Cleaning the Freezer .................................................................................11
3.8 Assembling Freezer ...................................................................................11
3.9 Sanitizing ...................................................................................................12
3.10 Initial Freeze Down and Operation.............................................................13
A. Adding Mix ...........................................................................................................13
B. Preparing the IntelliTec Control...........................................................................13
C. Initial Freeze Down..............................................................................................13
D. Adjusting the IntelliTec Control............................................................................14
E. Serving Product ...................................................................................................14
3.11 Normal Freeze Down and Operation..........................................................14
3.12 Mix Information ..........................................................................................15
3.13 Operation of Mix Pump ..............................................................................15
3.14 Mix Pump Cleaning....................................................................................16
3.15 Disassembly and Inspection of Removable Parts ......................................16
TABLE OF
CONTENTS

Section Description Page
4 Maintenance and Adjustments
4.1 Freezer Adjustment ...................................................................................17
4.2 Product Consistency Adjustment ...............................................................17
4.3 Locking the Control Panel..........................................................................17
4.4 Obtaining Readings and Modifying Settings (Service Personnel Only) ......17
4.5 Readings (Service Personnel Only) ...........................................................18
4.6 Adjustments (Service Personnel Only) ......................................................19
4.7 Other Settings (Service Personnel Only) ...................................................19
4.8 Overrun Adjustment...................................................................................19
4.9 Mix Pump Hose Reposition........................................................................20
4.10 Mix Pump Hose Replacement ...................................................................20
4.11 Cab Temperature Adjustment....................................................................21
4.12 Drive Belt Tension Adjustment...................................................................21
4.13 Condenser Cleaning (Air-Cooled Freezers) ...............................................22
4.14 PreventativeMaintenance..........................................................................22
4.15 Extended Storage ......................................................................................22
5 Troubleshooting
5.1 Error Codes ...............................................................................................23
5.2 Troubleshooting - Error Codes...................................................................23
5.3 Troubleshooting - Freezer..........................................................................25
5.4 Troubleshooting - Mix Pump ......................................................................26
6 Replacement Parts
6.1 Brushes, Decals and Lubrication ...............................................................29
6.2 Spigot Extension........................................................................................29
6.3 Auger Shaft and Faceplate Parts ...............................................................30
6.4 Cab Tubing Assembly................................................................................31

1
1.1 DESCRIPTION
TheStoeltingO431RCfloormodelmachineispressurefed.
The machine is equipped with fully automatic controls to
provide a uniform product. The machine is designed to
operate with almost any type of commercial soft-serve or
non-dairy mix available, including ice milk, ice cream,
yogurt,andfrozendietarydesserts.TheO431RChasarear
openingrefrigeratedcabinetwithrearcontrols.
Thismanualisdesignedtoassistqualifiedserviceperson-
nel and operators in the installation, operation and main-
tenanceoftheStoeltingO431RCpressuremachine.
SECTION 1
DESCRIPTION AND SPECIFICATIONS
Figure 1-1 Model O431RC Freezer

2
1.2 SPECIFICATIONS
Dimensions
width
height
depth
Weight
Electrical
running amps
connection type
International Option
Compressor
Drive Motor
Air Flow
Plumbing Fittings
Hopper Volume
Freezing Cylinder
Volume
Air cooled units require 3" (7,6 cm)air space onbothsides.
Air Cooled Water Cooled
approximately17A approximately15A
1 Phase, 220-240 VAC, 50Hzor 3 Phase, 380-415 VAC, 50Hz
Water cooled units require 1/2" N.P.T. water and drainfittings.
Model O431 RC
37-3/4'' (95,9 cm)
67-7/8'' (172,4 cm)
1 Phase, 208-240 VAC, 60Hz
19-1/8'' (48,6 cm)
Machine
NEMA L6-30P NEMA L6-30P
Two - 3/4 hp
with crate
27'' (68,6 cm)
78'' (198,1 cm)
48'' (121,9 cm)
650 lbs (294,8 kg)500 lbs (226,7 kg)
Two - 1 gallon(3,79 liters)
Two - 5.5 gallons (20,82 liters)
15,000 Btu/hr Scroll™ Compressor

3
2.1 SAFETY PRECAUTIONS
Do not attempt to operate the machine until the safety
precautions and operating instructions in this manual are
read completely and are thoroughly understood.
Take notice of all warning labels on the machine. The
labelshavebeenputtheretohelpmaintainasafeworking
environment.Thelabelshavebeendesignedtowithstand
washing and cleaning. All labels must remain legible for
thelifeofthemachine.Labelsshouldbecheckedperiodi-
callytobesuretheycanberecognizedaswarninglabels.
If danger, warning or caution labels are needed, indicate
the part number, type of label, location of label, and
quantity required along with your address and mail to:
STOELTING, INC.
ATTENTION: Customer Service
502 Hwy. 67
Kiel, Wisconsin 53042
2.2 SHIPMENT AND TRANSIT
The machine has been assembled, operated and in-
spectedatthefactory.Uponarrivalatthefinaldestination,
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
VISIBLEORCONCEALED.Donotpaythefreightbilluntil
the machine has been checked for damage. Have the
carrier note any visible damage on the freight bill. If
concealeddamageand/orshortage isfoundlater,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,
severedamage tothe machineand will voidfactory
warranty.
Installation of the machine involves moving the machine
close to its permanent location, removing all crating,
setting in place, assembling parts, and cleaning.
A. Uncrate the machine.
SECTION 2
INSTALLATION INSTRUCTIONS
B. Installthefourcasters.Turnthethreadedendinto
the machine until no threads are showing. 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 3"
(7,6 cm) air space on both sides and back for
proper circulation. (Fig. 2-1)
E. Machines that have a water-cooled condenser
require 1/2" NPT supply and drain fittings.
F. Inair-cooledmachines,useavoltmetertomeasure
incoming voltage. If the supply voltage is 215 or
less, then the buck-boost transformer must be
connected to the fan motor. Refer to the wiring
diagram located behind the header panel to
connect. NOTE
Supply voltage must be checked to make sure the
fan motor operates properly.
2.4 INSTALLING PERMANENT WIRING
If permanent wiring is required by local codes, the follow-
ing procedure must be performed:
A. Refer to the nameplate on the side panel of the
machineforspecificelectricalrequirements.Make
surethepowersourceinthebuildingmatchesthe
nameplate requirements.
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.
Figure 2-1 Space and Ventilation Requirements

4
2.5 MIX PUMP
A. MIX PUMP HOSE INSTALLATION
Followthestepsbelow toinstallthemix pumphoseinthe
cabinet part of the machine.
1. Turnthemixpumpon.Theswitchislocatedatthe
top of the cabinet.
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 tubeinto the clampso thenatural curve of
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. Allowthehosetofeeditselfthroughthepumpuntil
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.
10. Connectthefreeendofthemixpumphosetothe
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
TheO431machinemaybeconnectedtothestandardmix
container or up to three prepacked mix bags. Follow the
instructions below that match your configuration.
Standard Connection:
1. Connect a 2" (5cm) length of 3/8" (9,5mm) ID
plastic food grade tubing to the mix pickup
assembly. Secure with hose clamps. Place the
assemblythroughtheholeinthecoverandinstall
the retaining clip.
Figure 2-2 Mix Hose Installation
6" (15cm)

5
2. Connect the free end of the tubing to the mix
check valve. Observe the direction of the check
valve flow arrow. Secure with a hose clamp.
Connect a 24" (61cm) length of 3/8" (9,5mm) ID
plastic food grade tubing to the free end of the
check valve 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.Thebagthatisconnected nearesttheoutletof
the manifold will drain last and should be placed at the
backofthemixcontainer.Themixlowlevelindicatorrelies
on proper bag placement.
1. Connect3/8"(9,5mm)IDplasticfoodgradetubing
to a bag adapter. Secure with hose clamps.
2. Slide the hose clip over free end of 3/8" (9,5mm)
ID plastic food grade tubing. Attach the free end
ofthetubingtoamanifoldadapter.Securewitha
large hose clamp or equivalent.
3. Push the manifold adapter with spring and valve
intotheleftport(nearestthemanifoldoutlet)ofthe
mixinletmanifoldandsecurewitharetainingclip.
(Fig. 2-5).
Figure 2-4 BCS Mix Inlet Manifold
Mix Outlet
Drains
Last
Figure 2-3 Mix Pump Connections for Standard Mix Container

6
4. Repeatsteps1to3forthemiddleportandforthe
right port of the mix inlet manifold.
5. Place three mix bags into the mix container.
6. Connectthebag adapter attachedto theleftside
of the manifold (closest to the mix outlet) to the
mix bag in the back of the mix container.
7. Connectthebagadapterattachedtothemiddleof
themanifoldtothemixbaginthemiddleofthemix
container.
8. Connectthebagadapterattachedtotherightside
ofthemanifold(farthestfromthemixoutlet)tothe
mix bag in the front of the mix container.
When Using Bag Connection System (BCS) with One
or Two Bags (optional kit #2183987):
Whenconnectingoneortwobags,themanifoldadapters
must be installed closest to the manifold outlet and the
manifoldplug(s)mustbeplacedfarthestfromthemanifold
outlet.
1. Connect3/8"(9,5mm)ID
plasticfoodgradetubing
toabagadapter.Secure
with hose clamps.
2. Slide the hose clip over
thefreeendofthetubing.
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
manifoldandsecurewith
retaining clip. (See
Figure 2-5).
4. If using two mix bags,
repeat steps 1 to 3 for
the middle port.
5. Install a manifold plug
intoeachemptyinletand
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 2-5 Bag Connection System (Optional)
BagAdapter
Manifold
Adapter
Retaining
Clip
Mix Inlet
Manifold
Manifold
Plug
C. MIX LOW LEVEL INDICATOR ADJUSTMENT
Thesensitivityofthe“MixLow”indicationthatdisplayson
thecontrol panelcan beadjusted to operator preference.
Ifmoreadvancednoticeoflowmixisrequired,loosenthe
blackadjustmentknobslocatedonthesensorbracketsat
the back of the machine cabinet and slide the bracket
upwards.Ifthe“MixLow”messageappearswhilethereis
stillsufficientmixinthecontainer,slidethebracketdown-
ward. Be sure to tighten the adjustment knobs after
properly positioning the sensor.

7
3.1 OPERATOR’S SAFETY PRECAUTIONS
SAFE OPERATION IS NO ACCIDENT; observe these
rules:
A. Know the machine. Read and understand the
OperatingInstructions.
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. Disconnectpowerformaintenance.Neverattempt
torepairorperformmaintenanceonthemachine
until the main electrical power has been
disconnected.
G. Donotoperateunderunsafeoperatingconditions.
Neveroperatethemachineifunusualorexcessive
noise or vibration occurs.
SECTION 3
INITIAL SET-UP AND OPERATION
3.2 OPERATING CONTROLS AND INDICATORS
Before operating the machine, it is required that the
operator 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 displayed on the control panel, refer to the
troubleshooting section of this manual.
A. MAIN FREEZER POWER SWITCH
The Main Freezer Power switch is a two position rocker
switch that supplies power to the IntelliTec control, freez-
ingcylindercircuitsandlowercabinetrefrigerationsystem.
When the switch is placed in the ON position, the cabinet
refrigerationsystemwillrununtilthepresettemperatureis
reached; then it will cycle ON and OFF to maintain that
temperature.Power to the freezing cylinders canthen be
controlled with the Freezing Cylinder OFF/ON switch.
B. FREEZING CYLINDER OFF/ON SWITCH
The Freezing Cylinder OFF/ON switch is a two position
toggle switch used to supply power to each freezing
cylinder control circuit. When the switch is in the OFF
position, the freezing cylinder’s refrigeration system and
auger will not operate. When the switch is in the ON
position, the machine will be operational.
Figure 3-1 Machine Controls
Cab Off
Indicator Light
Main Freezer
Power Off/On
Freezing Cylinder
Off/On
Pump
Off/On
IntelliTec Control
(See Figure 3-2)
Dispense
RateAdjustor
Back of Machine
Front of Machine

8
C. SPIGOT SWITCH
Thespigot switch ismounted tothe spigotcam assembly
behind the header panel. When the spigot is opened to
dispenseproduct,thespigotswitchopensandthe"Serve
Mode" begins.
D. DISPENSE RATE ADJUSTOR
The dispense rate adjustor is located under the header
panel, to the immediate right of each spigot handle.
Turning the knob counterclockwise will decrease the
dispense rate.
E. CAB OFF INDICATOR LIGHT
A flashing light indicates the Main Freezer Power Switch
isintheOFFposition;norefrigerationisbeingsuppliedto
the cab. Place the Main Freezer Power switch in the ON
position for cab refrigeration.
F. PUMP SWITCH
Thepumpmotor switch isthetoggle switchlocatedat the
backofthemachine.WhentheswitchisplacedintheOFF
position,the pumpwill notrun. Whenthe switchis placed
in the ON position, the pump will run until the preset
pressureisreached.Itthencyclesonandoffasproductis
drawntomaintainthatpressure.
G.PUSHTOFREEZEBUTTON
The PUSH TO FREEZE button is a snap switch used to
initiate "Serve Mode". NOTE
After the PUSH TO FREEZE button is pressed, the
drivemotor starts.Aftera 3-second delay, the com-
pressor will start.
H. LEDS
The membrane switch (touchpad) features two lights: a
greenLEDandanamberLED.ThegreenLEDislitduring
"Serve Mode". During freeze down, it is not lit. When
product consistency approaches 75% in the freezing
cylinder, the green LED flashes. The amber LED is on
duringallothermodes.BothLEDsalternativelyflashifan
error occurs or if the freezing cylinder is off.
I. CLEAN BUTTON
The CLEAN button is a snap switch. When the button is
pressed, the freezing cycle stops and the drive motor will
start. A CLEAN message will display on the LCD screen
alongwitha5-minutecountdowntimer.ToexittheCLEAN
mode, turn the Freezing Cylinder OFF/ON switch to the
OFF position or press the CLEAN button again. If the
machine is left in CLEAN for more than 20 minutes, an
error code (E4) will be displayed on the display panel.
Place the Freezing Cylinder OFF/ON switch in the OFF
position and back in the ON position to clear this error.
J.DRIVEMOTOROVERLOAD
Theinternaldrivemotoroverloadwilltripifthedrivemotor
is overloaded. It will reset after approximately 10-12 min-
utes. If the drive motor continues to trip, refer to Trouble-
shooting in Section 5.
K. MIX LOW LIGHT INDICATOR
A MIX LOW message will appear on the LCD display to
alerttheoperatorofalowmixcondition.Themessagewill
displaywhen thereis approximatelyone gallonof mixleft
in the mix container or when one bag of the Bag Connec-
tion System (BCS) is empty. When the MIX LOW mes-
sage is displayed, refill the container or replace a bag
immediately.
L. MENU NAVIGATION BUTTONS
The Menu Navigation Buttons allow the user to display
information regarding the machine’s status of operation
as well as adjust product consistency (Fig. 3-2).
SelectionButton(SEL)TheSELbuttonisusedin
combinationwiththeuparrowbuttontoenterinto
thesettingsoftheIntelliTeccontrol.Thisbuttonis
alsousedtonavigatethroughthecontrolsettings
menu.
SetButton(SET)TheSETbuttonisusedtosave
achangemadetotheproductconsistencysetting.
It is also used to save changes when modifying
control settings.
Left Arrow Button (Õ) If the left arrow button is
pressed for 5 seconds, the display will remain lit.
Toturnthelightoff,presstheleftarrowbuttonfor
5seconds.Theleftarrowbuttonisusedprimarily
to navigate through the control settings.
Up Arrow Button (×) After pressing the SET
button, the up arrow button will change the value
of the product consistency setting. This button is
used primarily to navigate through the control
settings.
Push to Freeze
Green LED
Amber LED
SEL Button
SET Button
Clean Button
Up Arrow Button
Left Arrow Button
Figure 3-2 IntelliTec Control

9
3.3 IMPORTANT INFORMATION REGARDING
CLEANING AND SANITIZING
Softserve andshake machinesrequire special consider-
ationwhenitcomestofoodsafetyandpropercleaningand
sanitizing.
The following information specifically covers issues for
cleaning and sanitizing frozen dessert machines. This
informationismeanttosupplementacomprehensivefood
safety program.
SOIL MATERIALS ASSOCIATED WITH FROZEN
DESSERT MACHINES
MILKFAT/BUTTERFAT – As components of ice-cream/
frozen custard mix, these soils will accumulate on the
interior surfaces of the machine and its parts. Fats are
difficulttoremove andhelpattribute tomilkstonebuildup.
MILKSTONE – Is a white/gray film that forms on equip-
ment and utensils that are exposed to dairy products.
Thesefilmswillaccumulateslowlyonsurfacesbecauseof
ineffectivecleaning,use ofhardwater, orboth.Milkstone
is usually a porous deposit, which will harbor microbial
contaminants and eventually defy sanitizing efforts.
Once milkstone has formed, it is very difficult to remove.
Without using the correct product and procedure, it is
nearly impossible to remove a thick layer of milkstone.
(NOTE: general-purpose cleaners DO NOT remove
milkstone.) This can lead to high bacteria counts and a
food safety dilemma.
IT IS BEST TO CONTROL MILKSTONE ON A DAILY
BASISBEFOREITCANBECOMEASIGNIFICANTFOOD
SAFETY PROBLEM.
Inadditiontofoodsafety,milkstonecancausepremature
weartomachineparts,whichcanaddtocostsforreplace-
ment parts or possibly more expensive repairs if worn
machine parts are not replaced once they have become
excessivelyworn.
IMPORTANT DIFFERENCES BETWEEN CLEANING
ANDSANITIZING
CLEANING vs. SANITIZING
Itisimportanttodistinguishbetweencleaningandsanitiz-
ing. Although these terms may sound synonymous, they
are not. BOTH are required for adequate food safety and
proper machine maintenance.
CLEANING
· Is the removal of soil materials from a surface.
· Is a prerequisite for effective sanitizing.
NOTE
An UNCLEAN surface will harbor bacteria that can
defy sanitizing efforts.
Bacteria can develop and resist sanitizing efforts within a
layer of soil material (milkstone). Thorough cleaning pro-
cedures that involve milkstone removal are critical for
operators of frozen dessert machines.
SANITIZING
· Kills bacteria.
· Can be effective on clean surfaces only.
NOTE
Using a SANITIZER on an unclean surface will not
guaranteeacleanand safefrozendessertmachine.
PROPER DAILY MAINTENANCE:
TheOnlyWaytoAssureFoodSafetyandProductQuality
Proper daily maintenance can involve a wide variety of
products and procedures. Overall, the products and pro-
cedures fall into three separate categories. (Please note
that this is a brief overview intended for informational
purposesonly.)
1. CLEANING–Thisinvolvesdrainingmixfromthe
freezing cylinder and rinsing the machine with
water.Next,acleanerisrunthroughthemachine.
Then,themachineisdisassembledandremovable
parts are taken to the sink for cleaning.
2. MILKSTONE REMOVAL – Since most cleaners
do not have the ability to remove milkstone, the
use of a delimer becomes necessary. Although
this procedure may not be needed on a daily
basis,itwillusuallyfollowthecleaningprocedure.
It requires letting a delimer solution soak in the
machine for an extended period. Individual parts
are also soaked in a deliming solution for an
extended period of time (more about delimers in
AdditionalInformation).
3. SANITIZING–Afterthemachinehasbeencleaned
and contains no milkstone, the machine is
reassembled. Then a FDA-approved sanitizing
solutionisrunthroughthemachinetokillbacteria.
The machine is then ready for food preparation.
As a recommended cleaner and sanitizer for your frozen
dessertmachine,STERA-SHEENhasproventobeoneof
the best daily maintenance products for:
· CLEANING – Thorough removal of all solids
including butterfat and milk fat.
· MILKSTONE REMOVAL – Complete removal of
milkstone.
· SANITIZING – FDA-approved no rinse sanitizer
for food contact surfaces.
ADDITIONALINFORMATION
THE USE OF DELIMERS
A delimer is a strong acid that has the ability to dissolve
milkstone. This type of chemical may become necessary
once high levels of milkstone have developed. While
these products are very effective for removing HIGH
levels of milkstone, they are not ideal for two reasons:
1. PRODUCTSAFETY–Strongacidsaredangerous
chemicals. Carefully follow safety instructions
provided with delimer products.

10
2. MACHINE DAMAGE – Strong acids will attack
metal and rubber causing premature wear of
parts. The use of a delimer needs to be closely
monitored to avoid damage to machine surfaces
and parts.
WithproperdailyuseofSTERA-SHEENoritsequivalent,
there is no need for the use of a DELIMER.
DO NOT USE BLEACH
· BLEACH HAS ABSOLUTELY NO CLEANING
PROPERTIES.
· BLEACH IS CORROSIVE. It will damage
components of the machine causing premature
wear and metal corrosion.
GENERAL PURPOSE CLEANERS
General purpose cleaners do not have the ability to re-
move milkstone. Milkstone will become a problem if not
remedied with additional products and procedures.
THE USE OF CHLORINE TEST STRIPS
“Test strips” are used to determine concentrations of
active chlorine in sanitizing solutions. To use the strips,
tearoff asmall portionand submergeit intothe sanitizing
solution.Then,comparethecolorchangetothecolorkey
on the side of the test strip dispenser to determine the
approximate chlorine concentration.
The ideal concentration of chlorine needs to be 100 ppm
(as stated by the FDA). NOTE
Followthedirectionsonthecontainerforpropercon-
centration.
Twomain factors contribute to falling chlorine concentra-
tions in a sanitizing solution.
1. PRODUCT USE – As the chlorine in the solution
is being used, chlorine concentrations fall.
2. TIME–Astimepasses,smallamountsofchlorine
“evaporate” from the solution. (That is why you
can smell it.)
Sanitizingsolutionsshouldnotbeallowedtofallbelow100
ppm chlorine. New solutions should be mixed once old
solutions become ineffective.
3.4 DISASSEMBLY OF MACHINE PARTS
WARNING
Moving machinery can grab, mangle and dismem-
ber.Placethe Main FreezerPower Off/Onswitchin
theOFF positionbefore disassembling for cleaning
or servicing.
Before using the machine for the first time, complete
machinedisassembly,cleaningandsanitizingprocedures
needtobefollowed.Routinecleaningintervalsandproce-
dures must comply with the local and state health codes.
Inspectionforwornorbrokenpartsshouldbemadeatevery
disassembly of the machine. All worn or broken parts
shouldbereplacedtoensuresafetytoboththeoperatorand
thecustomerandtomaintaingoodmachineperformance
and a quality product. Check the wear line on the auger
flightsonaregularbasis(Fig.3-3)andreplaceasneeded.
Frequency of cleaning must comply with the local health
regulations.
Todisassemblethe machine,referto thefollowingsteps:
A.DISASSEMBLYOFFRONTDOOR
1. TurntheMainFreezerPowerOff/Onswitchtothe
OFF position.
2. Remove the knobs on the front door.
3. Remove the front door by pulling it off the studs.
4. Remove the air bleed valve by unscrewing the
knob while holding the valve stem from behind.
Removethecompressionspringandpushtheair
bleed valve through the rear of the front door.
5. Remove the spigots through the bottom of the
front door.
6. Remove all o-rings from parts by first wiping off
thelubricationusingacleantowel.Thensqueeze
theo-ringupwardtoformaloop(Fig.3-4).Rollthe
o-ring out of the groove.
CAUTION
Do not use any type of sharp object to remove the
o-rings.
Figure 3-3 Auger Flight Wear
Wear Line

11
B.DISASSEMBLYOFAUGER
1. Removethefrontaugersupportandbushing.
2. Remove the auger assembly from the machine.
Pulltheaugeroutofthemachinebarrelslowly.As
theaugerisbeingpulledout,carefullyremoveeach
of the plastic flights with springs.
3. Keeptherearoftheaugertippeduponceitisclear
of the freezing cylinder to prevent the rear seal
assemblyfromdropping.
4. Wipethehexdriveanti-seizeoffofthehexendof
theaugerwithapapertowel.Removetherearseal
assembly(Fig. 3-5).
5. Unscrewthespringsfrom the augerflights.
3.5 CLEANING DISASSEMBLED PARTS
Disassembled machine parts require complete cleaning,
sanitizingandairdryingbeforeassembling.Localandstate
health codes will dictate the procedure required. Some
statehealth codesrequire a four sink process(pre-wash,
wash,rinse,sanitize,airdry), whileothersrequireathree
sink process (without the pre-wash step). The following
proceduresareageneralguidelineonly.Consultyourlocal
andstatehealthcodesfortheproceduresrequiredinyour
location.
A. Disassembleallparts.(RefertoSection3.4forthe
disassemblyof machine 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.
D. Rinse all parts with clean 90° to 110°F (32°C to
43°C) water.
E. Sanitize all machine parts following procedures
outlinedbelow.
3.6 SANITIZING MACHINE PARTS
A. Useasanitizer,mixedaccordingtomanufacturer’s
instructions, to provide a 100 parts per million
strengthsolution.Mix sanitizerinquantities of no
lessthan2gallonsof90°to110°F(32°Cto43°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.
3.7 CLEANING THE MACHINE
The exterior should be kept clean at all times to preserve
the luster of the stainless steel. A high 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 surface from inside of the
freezingcylinder.
B. Using sanitizing solution and the large barrel
brush provided, sanitize the freezing cylinder by
dipping the brush in the sanitizing solution and
brushing the inside of the freezing cylinder.
C. Remove the drip tray by pulling from the front
panel. Clean and replace the drip tray.
3.8 ASSEMBLING MACHINE
To assemble the machine parts, refer to the following
steps: NOTICE
Petrol-Gel sanitary lubricant or equivalent must be
used when lubrication of machine parts is speci-
fied.
NOTICE
The United States Department of Agriculture and
the Food and Drug Administration require that lu-
bricantsusedonfoodprocessing equipmentbecer-
tifiedfor thisuse. Uselubricantsonly inaccordance
with the manufacturer’s instructions.
Figure 3-4 Removing O-Ring
Figure 3-5 Rear Seal Assembly
Remove O-Ring
From Inside Insert

12
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. Lubricatetherearsealareaontheaugershaftwith
a thin layer of sanitary lubricant. Install the rear
sealo-ring.Lubricatetheoutsideoftherearsealo-
ringwith sanitary lubricant.
C. Installthestainlesssteelrearsealadapterintothe
rear seal dry (without lubricant). Lubricate the
inside surface of the rear seal adapter, including
the adapter o-ring, and install it onto the auger
shaft.DONOTlubricatetheoutsideoftherearseal
adapter(Fig.3-6).
D. Lubricatethehexdriveendoftheaugerwithasmall
amount of hex drive anti seize. A small container
of anti seize 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
intothefreezingcylinderandrotateslowlyuntilthe
augerengagesthedriveshaft.
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.
H. Assemble the air bleed valve o-ring onto the air
bleed valve. Position the o-ring into the groove
closetothewidepart.Applyathinfilmofsanitary
lubricant to the o-ring.
I. Inserttheairbleedvalveintothebackofthefront
door. Install the compression spring onto the air
bleed valve then screw the knob on finger tight.
J. Applyathinlayerofsanitarylubricanttotheo-rings
on the spigot body and install the spigot body
throughthebottomofthe frontdoor.
K. Apply a thin film of sanitary lubricant to the door
seal o-ring and fit it into the groove on the rear of
the front door.
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.
3.9 SANITIZING
Sanitizingmustbedoneafterthemachineiscleanandjust
before the machine is filled with mix. Sanitizing the night
beforeisnoteffective.However,youshouldalwaysclean
the machine and parts after using it.
NOTE
The United States Department of Agriculture and
the Food and Drug Administration require that all
cleaningandsanitizingsolutions usedwithfoodpro-
cessing equipment be certified for this use.
Whensanitizingthe machine,referto localsanitaryregu-
lationsforapplicablecodesandrecommended sanitizing
products and procedures. The frequency of sanitizing
must comply with local health regulations. Mix sanitizer
accordingto manufacturer’sinstructions toprovide a100
partsper million strength solution. Mixsanitizer in 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
sanitizedfor5minutes.Anysanitizermustbeusedonlyin
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.
Figure 3-7 Front Door
Figure 3-6 Rear Seal Assembly
Hex Drive
Anti Seize
Petrol-Gel Place O-Ring
Inside Insert

13
A. Prepare 2 gallons of sanitizing solution following
the manufacturer’s instructions. Pour it into a
clean container and place the container into the
cabinet. Put the mix pick-up tube in the sanitizer.
B. PlacethemixpumpswitchintheONpositionand
open the air bleed valve on the front door by
pushingthevalveinandholding(seeFigure3-8).
C. Let sanitizing solution fill the freezing cylinder to
theairbleedvalve.Closethevalvebypullingitout
to lock it into place.
D. Place the Main Power OFF/ON and Freezing
Cylinder OFF/ON switches in the ON position.
Press the CLEAN button.
E. Checkforleakswhenthefreezingcylinderis first
pressurizedwith 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.Checktheinside of thecabunitfor leaksatthe
hose connections.
F. Usingasanitizedsoftbristlebrush(orequivalent)
dipped in sanitizing solution, clean the mix
container.
G. After five minutes, open the spigot to expel
sanitizing solution. Drain all of the solution from
the machine.
H. Whenthesolutionhasdrained,presstheCLEAN
buttontostoptheaugerandplacetheMainPower
OFF/ONandFreezingCylinderOFF/ONswitches
intheOFFposition.Allowthefreezingcylinderto
draincompletely.
The machine is now sanitized and ready for adding mix.
3.10 INITIAL FREEZE DOWN AND OPERATION
EveryStoeltingsoftservemachineneedstobesetonsite.
The following adjustment will provide optimal product
consistency while prolonging product life.
NOTE
Themachineisdesignedforcorrectoperationinam-
bient temperatures between 50°F and 110°F. Tem-
peraturesout of thatrange may causerefrigeration
problems and product quality issues.
A. ADDING MIX
1. Sanitize the machine immediately before use.
2. MakesuretheFreezingCylinderOFF/ONswitch
is in the OFF position.
3. Fill the mix container in the cab with at least 2.5
gallons of mix.
4. Attach the mix inlet probe to the container and
place the container in the refrigerated cab.
5. The mix pump switch is located inside the cab
unit. Place it in the ON position.
6. Place a container under the spigot and open the
spigottoallowthemixtoflushoutabout8ounces
(0.23 liters) of sanitizing solution and liquid mix.
Close the spigot.
7. 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.
B. PREPARING THE INTELLITEC CONTROL
8. On the IntelliTec control, press and hold the SEL
button for 8 seconds. While still holding the SEL
button, press the up arrow (⇑) button. The LCD
will read “DISPLAY”.
9. Presstheleftarrow(⇐)buttononce.Thedisplay
will read “BASIC”.
10. Press the up arrow (⇑) button once. The display
will read “CutOut amps”.
11. Press the SET button. A cursor will start blinking
under the far right digit.
12. Changethevalueto8.0. Presstheleft arrow (⇐)
buttontomovethecursor.Presstheuparrow(⇑)
buttontoincreasethedigit.Whena digitreaches
9, pressing the up arrow (⇑) button again will
change the value to 0.
13. After entering 8.0, press SET to save this value.
The LCD will read “CutOut Set -- OK”.
14. PresstheSELbutton.TheLCDwillread“CutOut
amps 8.0”.
15. Press the SEL button twice. The LCD will read
“DISPLAY”.
16. Press the up arrow (⇑) button to navigate to the
“°F” and “amps” readings.
C. INITIAL FREEZE DOWN
17. PlacetheFreezingCylinderOFF/ONswitchinthe
ON position.
18. Press the PUSH TO FREEZE button.
Figure 3-8 Air Bleed Valve
Air Bleed
Valve

14
NOTE
After the drive motor starts, there is a 3-second de-
lay before the compressor starts.
19. As the product freezes, the “amps” value on the
displaywillincrease.Whenitreaches2.8A,open
thespigot,takea6-8ouncesampleandmeasure
the temperature. For most soft serve mixes, the
desiredtemperatureisbetween19.0°Fand19.5°F.
20. Draw samples at every increase of 0.2A until
reachingthedesiredconsistencyandtemperature.
NOTE
Show the sample to the customer and make sure it
meets their required consistency and temperature.
21. Record the “amps” value.
22. PlacetheFreezingCylinderOFF/ONswitchinthe
OFF position.
D. ADJUSTING THE INTELLITEC CONTROL
23. Press the SEL button. The display will read
“DISPLAY”.
24. Presstheleftarrow(⇐)buttononce.Thedisplay
will read “BASIC”.
25. Press the up arrow (⇑) button once. The display
will read “CutOut amps”.
26. Changethevaluetotherecordedvaluebypressing
the SET button. A cursor will start blinking under
the far right digit.
27. Press the left arrow (⇐) button to move the
cursor. Press the up arrow (⇑) button to increase
thedigit. Whena digitreaches 9, pressing the up
arrow (⇑)button again will change the value to0.
28. PresstheSETbuttontosavethevalue.TheLCD
will read “CutOut Set -- OK”.
29. PresstheSELbutton.TheLCDwillread“CutOut
amps”alongwiththeprogrammedvaluefromthe
previous step.
30. Press the SEL button three times. The LCD will
read “EXITMENU”.
31. Press the up arrow (⇑) button to exit the menu.
32. Adjustment to the control is completed.
E. SERVING PRODUCT
33. PlacetheFreezingCylinderOFF/ONswitchinthe
ON position.
34. Press the PUSH TO FREEZE button.
35. When the product is at 75% consistency, the
display will read “SERVE”.
36. For normal dispensing, move the spigot handle
fully open.
37. The machine dispenses product at a reasonable
drawrate.If themachineis overdrawn,theresult
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.
38. Do not operate the machine when the MIX LOW
message is displayed. Refill the mix container
immediately. NOTE
The machine has a standby and sleep mode.After
a preset number of freezing cycles, it will enter the
standbymode(followedbysleep mode)and remain
there until someone draws product or presses the
PUSH TO FREEZE button. In the sleep mode, the
machine will keep the product below 41°F (5°C).
Sleep modes do not take the place of cleaning and
sanitizing.Federal,State,and local regulatoryagen-
cies determine frequency of cleaning and sanitiz-
ing.
3.11 NORMAL FREEZE DOWN AND
OPERATION
Thefollowingsectioncontainstherecommendedoperat-
ing procedures for the safe operation of the machine.
A. Sanitize immediately before use.
B. MakesuretheFreezingCylinderOff/Onswitchis
in the OFF position.
C. Fill the storage container in the cab with at least
2.5 gallons of mix.
D. Attach the mix inlet probe to the container and
place the container in the refrigerated cab.
E. Place the mix pump switch in the ON position.
F. Place a container under the spigot and open the
spigottoallowthemixtoflushoutabout8ounces
(0.23 liters) of sanitizing solution and liquid mix.
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. PlacetheFreezingCylinderOFF/ONswitchinthe
ON position.
I. Press the PUSH TO FREEZE button.
NOTE
After the drive motor starts, there is a 3-second de-
lay before the compressor starts.
J. When the product is at 75% consistency, the
display will read “SERVE”. Open the spigot to
dispense product.