Vollrath STOELTING SF144 User manual

Model SF144
SERVICE MANUAL
Manual No. 513657 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.............................................................................................1
1.3 ModesofNormalOperation ........................................................................4
1.4 MixLevelIndicators ....................................................................................6
1.5 HopperRefrigeration ...................................................................................6
1.7 MotorProfileCutoutCompensation ............................................................6
2 InstallationInstructions
2.1 SafetyPrecautions .....................................................................................9
2.2 ShipmentandTransit .................................................................................9
2.3 MachineInstallation....................................................................................9
3 Initial Set-Up and Operation
3.1 Operator’sSafetyPrecautions ....................................................................11
3.2 OperatingControlsandIndicators...............................................................11
3.3 ImportantInformationRegardingCleaningandSanitizing ............................13
3.4 Disassembly of Machine Parts ...................................................................14
3.5 CleaningDisassembledParts.....................................................................15
3.6 Sanitizing Machine Parts............................................................................15
3.7 CleaningtheMachine .................................................................................15
3.8 AssemblingtheMachine ............................................................................16
3.9 Sanitizing ...................................................................................................16
3.10 InitialFreezeDownandOperation ..............................................................17
3.11 NormalFreezeDownandOperation ...........................................................18
3.12 MixInformation ...........................................................................................18
4 Maintenance and Adjustments
4.1 MachineAdjustment...................................................................................19
4.2 Product Consistency Adjustment ...............................................................19
4.3 LockingtheControlPanel...........................................................................19
4.4 ObtainingReadingsandModifyingSettings................................................19
4.5 Readings ....................................................................................................21
4.6 Adjustments ...............................................................................................22
4.7 OtherSettings ............................................................................................22
4.8 DriveBeltTensionAdjustment....................................................................23
4.9 CondenserCleaning ...................................................................................23
4.10 PreventativeMaintenance ...........................................................................24
4.11 ExtendedStorage.......................................................................................24
TABLE OF
CONTENTS

Section Description Page
5 Refrigeration System
5.1 RefrigerationSystem ..................................................................................25
5.2 RefrigerantRecoveryandEvacuation ..........................................................25
5.3 RefrigerantCharging ...................................................................................26
5.4 Compressor................................................................................................27
5.5 Condenser ..................................................................................................28
5.6 Valves ........................................................................................................28
A. Thermostatic Expansion Valve (TXV)..................................................................28
B. Check Valve.........................................................................................................29
C. High Pressure Cutout .........................................................................................29
D. Hot Gas Bypass ..................................................................................................30
E. Evaporator Pressure Regulator (EPR) ...............................................................31
F. Water Valve (Water Cooled Models Only)...........................................................31
5.7 Solenoid .....................................................................................................32
5.8 FilterDrier ..................................................................................................34
5.9 CapillaryTube ............................................................................................34
6 Electrical and Mechanical Control Systems
6.1 IntelliTecController .....................................................................................35
6.2 Contactors..................................................................................................35
6.3 DriveMotor .................................................................................................36
6.4 Capacitors..................................................................................................37
6.5 Gearbox .....................................................................................................38
6.6 CondenserFanMotor(AirCooledModelsOnly) .........................................38
6.7 Spigot Switch .............................................................................................39
6.8 TemperatureControlSensor .......................................................................40
7 Troubleshooting
7.1 ErrorCodes ................................................................................................41
7.2 Troubleshooting ..........................................................................................41
7.3 ServicingTip ...............................................................................................43
7.4 Troubleshooting-Machine..........................................................................44
8 Replacement Parts
8.1 Decals&Lubrication ..................................................................................45
8.2 AugerShaftandFaceplate Parts................................................................46
8.3 MachineFront ............................................................................................48
8.4 Panels........................................................................................................48
8.5 Blender.......................................................................................................49
8.5 LeftSide.....................................................................................................50
8.6 RightSide ..................................................................................................52
8.7 Front ..........................................................................................................52
8.8 Rear ...........................................................................................................53
8.10 Spigot.........................................................................................................54
8.11 RefrigerationDiagram&WiringDiagram .....................................................55

1
SECTION 1
INTRODUCTION
1.1 DESCRIPTION
The Stoelting SF144 countertop combination shake/soft
servemachineisgravityfed.Themachineisequippedwith
fully automatic controls to provide uniform product. The
SF144 is designed to operate with almost any type of
commercialsoftserveandshakemixesavailable,including
ice milk, ice cream, yogurt, and frozen dietary desserts.
TheSF144allowstheoperatortodispenseoutstandingsoft
serve from the left spigot, and thick creamy shakes or
smoothiesfromtherightspigot,withtheconvenienceand
costof one unit.The SF144includes ablender formixing
fruitandberriesintothedairyproductformakingsmoothies.
Thismanualisdesignedtoassistqualifiedserviceperson-
nelandoperatorsintheinstallation,operationandmainte-
nanceof the StoeltingSF144gravitymachine.
Figure 1-2 Specification
Figure 1-1 SF144 Machine
1.2 SPECIFICATIONS

2
1.2 SPECIFICATIONS
* CutOut amps must be set on site.
**TheRefrigersettingontherightcontrolboard
must be set to None.
Dimensions
width
height
depth
Weight
Electrical
running amps
connectiontype
International Option
Compressor
Drive Motor
Air Flow
Plumbing Fittings
Hopper Volume
Freezing Cylinder
Volume
Individually
BothSides Running
Production
Capacity
Soft Serve - 8 GPH (30,29 liters) Left Side
Shake/Smoothie - 11 GPH (41,64 liters) RightSide
Soft Serve - 5.6 GPH (21,20 liters) Left Side
Shake/Smoothie - 8 GPH (30,29 liters) Right Side
NEMA6-20P power cord provided
Two - 0.85 gallon (3.4 quart), 3,22 liters
12,000 Btu/hr
Two - 3/4 hp
Air cooled units require 3" (7,6 cm)air space onbothsides
Two - 3 gallon (11,35 liters)
Water cooled units require 3/8" N.P.T. water and drainfittings.
Model F144 / SF144
28-1/2'' (72,4 cm)
34-3/4'' (88,3 cm)
22'' (55,9 cm)
Machine with crate
28'' (71,1 cm)
40-1/4'' (102,2 cm)
35-1/4'' (89,5 cm)
1 Phase, 220-240 VAC, 50Hz
470 lbs (213,1 kg)385 lbs (174,6 kg)
1 Phase, 208-230 VAC, 60Hz
approximately11A
Menu Display Value
Basic CutOut * amps
Cut In T 19 °F
Cycles 20 count
Stir On 15 seconds
Stir Off 300 seconds
Advanced OnTime 15 seconds
Off Time 450 seconds
Stb Time 120 minutes
Sl1DrvOn 120 seconds
Sl1DrOff 180 seconds
Sl2CutIn 33 °F
Sl2CtOut 30.5 °F
DftOffTm 600 seconds
Storage Refriger ** 2 Hopper
(Left HprCutIn 31.5 °F
control HprCtOut 27 °F
only) HprOffst 8 °F
Hpr Off 13 minutes
Hpr On 130 seconds
F144 / SF144
Refrigerant R-404A
Charge (W/C) 32 oz
(A/C) 42 oz
Suction Pressure
(at 72°F)
One Cylinder 18-22 psig
BothCylinders 22-26 psig
Hopper Only14 psig
Discharge Pressure 225-235 psig
Hot Gas Bypass
Pressure 14 psig (only hopper running)
EPR Valve 59-61 psig

3
1.3 MODES OF NORMAL OPERATION
Following are details of the operational modes of the
IntelliTeccontrol. NOTE:
Thepresetamounts,times,andtemperatureslisted
below are references to actual settings on the
IntelliTec control. Refer to Table 1-1 on page 7 for
details on each setting.
A. INITIAL STATUS
When the Main Freezer Power and Freezing Cylinder
switches are placed in the ON position, the machine will
startinthe“Sleep1 Mode". The display will read"Sleep1
Mode".Thecontrolwilleventuallymoveintothe“Sleep2”
mode if the PUSH TO FREEZE button is not pressed.
WhenthePUSHTOFREEZEbuttonispressedthecontrol
willmovetothe“ServeMode”.
B.SERVEMODE
WhenthePUSHTOFREEZEbuttonispressedoraspigot
handleispulled,the“ServeMode”begins.Thedrivemotor
starts,andafter a 3 seconddelay, the compressorstarts.
Thedisplayreads“FREEZING”onthetoplineandabaron
the bottom line increases with product consistency. A
toroid on the IntelliTec control senses increasing drive
motor amperage as the product comes to consistency in
thefreezingcylinder.Whenthecontrolsensestheproduct
is at 75% of consistency, the display will read "SERVE",
theamberLEDwillgoout,andthegreenLEDwillflash.At
this time, product can be served from the machine. The
drive motor and compressor will continue to run until the
toroidreadsapresetvalue(CutOutamps).Whenthetoroid
readstheCutOutampsonthedrivemotor,thecompressor
turnsoffandthegreenLEDwillremainlit.Aftera3second
delay,thedrivemotorturnsoff.Theproductinthefreezing
cylinderis now atserving temperatureand consistency.
After product is at consistency, the IntelliTec control
continuously monitors refrigerant temperature through a
thermistor mounted on the side of the freezing cylinder.
Whenthetemperatureincreasestoapreset amount(Cut
In T), a 3-second drive motor pre-stir analyzes product
consistency. The pre-stir check is also performed each
timethespigothandleisopened.Thischeckpreventsover-
freezing of product, especially during frequent, small vol-
ume draws. If the product requires a freezing cycle, the
control will start the cycle.
During the “Serve Mode”, a stir cycle starts. This cycle is
independent of the freezing cycle and is based on preset
times(StirOnandStirOff).Thestircyclepreventsproduct
separation.Ifafreezingcycleisinitiated,thetimerisreset.
In addition to the "Serve Mode" freezing cycle, there is a
freezingcyclebasedonapresettime(DftOffTime).Ifthis
time is attained without a freezing cycle, the control will
automatically start a freezing cycle.
The machine will remain in “Serve Mode” until the cycle
countsettingisattained.Thecyclecountisthenumberof
activefreezing cyclesand isbased ona preset value
(Cycles).Oncethecyclecount hasbeenreachedwithout
user interruption, the control will move into the "Standby
Mode".
If the PUSH TO FREEZE button is pressed or a spigot
handleispulled,thecyclecountisresetandthecontrolwill
movetothebeginningofthe"ServeMode".RefertoFigure
1-3foragraphicalrepresentationofthe"ServeMode".
C.STANDBYMODE
Ifnoproducthasbeendrawnfromthespigotandthepreset
numberofactivefreezingcyclesismet,thecontrolmoves
intothe“StandbyMode”.In "StandbyMode",thefreezing
cycleisbasedonpresettimers(OnTimeandOffTime),and
prevents ice crystals from building up in the product.
Becausetheproductremainspartiallyfrozen,itcanquickly
returntoservableconsistencywhenthePUSHTOFREEZE
button is pressed.
During “Standby Mode”, the stir cycle runs. This cycle is
basedonpreset,timedintervals(StirOnandStirOff)and
preventsproductseparation.
The"StandbyMode"maintainsproductqualityduringslow
times,whileminimizingreactivationtime.Thismodelasts
for a preset time (Stb Time). Once this time has been
reachedwithoutuserinterruption,thecontrolmovesinto
Figure 1-3 Serve Mode
Figure 1-4 Standby Mode

4
the "Sleep 1 Mode". Refer to Figure 1-4 for a graphical
representationofthe"StandbyMode".
If a spigot is opened or the PUSH TO FREEZE button is
pressed,thecontrolwillmoveto“ServeMode”.Productin
the front of the freezing cylinders may or may not be at
consistency. The state of the product is dependant on a
number of variables but will come to consistency quickly.
D.SLEEP 1MODE
After the “Standby Mode” time has expired without user
interruption,thecontrolwillmoveintothe“Sleep1Mode”.
During the "Sleep 1 Mode", the stir cycle is handled by
presettimers(Sl1DrvOnandSl1DrOff),andallowsproduct
to melt to a liquid state by using agitation cycles without
anyflow of refrigerant.Although theproduct temperature
never increases above 40°F, the product thaws rapidly
whichminimizesproductbreakdown.Thecontrolwillstay
in the “Sleep 1 Mode” until sensing a preset temperature
(Sl2CutIn). When this temperature has been reached
withoutuserinterruption,thecontrolwillmovetothe"Sleep
2Mode".RefertoFigure1-5foragraphicalrepresentation
of the "Sleep 1 Mode".
If a spigot is opened or the PUSH TO FREEZE button is
pressed,thecontrolwillmoveto“ServeMode”.Ifthespigot
is opened in "Sleep 1 Mode", the product will not be at
consistency. The operator must wait until the first "Serve
Mode"freezing cycle has completedto serve product.
E.SLEEP2 MODE
The “Sleep 2 Mode” maintains the freezing cylinder tem-
peraturebetweentwopresetvalues(Sl2CutInandSl2CtOut).
During the “Sleep 2 Mode”, the stir cycle runs. This cycle
isbasedonpreset,timedintervals(StirOnandStirOff)and
preventsproductseparation.The"Sleep2Mode"isoften
referred to by customers as the “night mode” and the
machine will stay in this mode until a spigot is opened or
the PUSH TO FREEZE button is pressed. When this
occurs,thecontrolwillmoveto“ServeMode”.Ifthespigot
is opened at this time, the product will be liquid. The
operator must wait until the first "Serve Mode" freezing
cyclehascompletedtoserveproduct.RefertoFigure1-6
fora graphical representation of the "Sleep 2Mode".
Figure 1-5 Sleep 1 Mode
F.INTELLITECRESTART(VERSION3.5ORHIGHER)
If a hard error occurs (refer the hard error list below), the
IntelliTec control will wait 5 minutes then attempt to clear
the error by restarting itself. The control will count each
restartattempt.TherestartcountwillresetifthePUSHTO
FREEZE button is pressed, the spigot is pulled, or the
Freezing Cylinder OFF/ON switch is placed in the OFF
position.
Thefollowingareconsideredharderrors:
ERRORCODE MALFUNCTION
2 HighTorque
3 RunTime
4 Clean
7 DriveMotor
9 HighPressureCutout
When a restart occurs, the second line of the display will
read "Restart" and the backlight will blink. This will occur
regardless of the system mode.
G.SLEEP3MODE(VERSION3.5ORHIGHER)
If a high torque, run time, or drive motor error condition
occursonthethirdrestartattempt,thecontrolwillmoveto
the "Sleep 3 Mode".
In"Sleep3Mode"freezingcylinderrefrigerationwillrunfor
4 seconds every 10 minutes. This ensures the product
temperature never increases above 40°F. The stir cycle
andthe augerdo notrun during"Sleep 3 Mode".
The control will exit "Sleep 3 Mode" if the PUSH TO
FREEZE button is pressed, the spigot is pulled, or the
Freezing Cylinder OFF/ON switch is placed in the OFF
position.
H.CLEANMODE
When the CLEAN button is pressed on the left side, all
hopper refrigeration stops. When the CLEAN button is
pressedontherightside,onlytherightbarrelfreezingcycle
stops.Ineithercase,thedrivemotorofthatbarrelstartsand
will run for 20 minutes and a 5 minute countdown timer is
displayed.Afterthetimehaselapsed,anoptionalaudible
alarm will sound if this accessory has been installed. The
Figure 1-6 Sleep 2 Mode

5
audible alarm is a reminder for the operator to end the
"CleanMode"when cleaning is completed.
If the machine is kept in "Clean Mode" for more than 20
minutes,theaugerdrivemotorstops,thehopperrefrigera-
tion starts, and an error code (E4) is displayed on the
display panel. The error code prevents damage to the
machinethatcouldoccurduringanextendedcleanmode
(RefertoSection8-Troubleshootingfordetails).Toclear
thiserror,placetheFreezingCylinderOff-Onswitchinthe
Off position and back in the On position. If the machine is
stillbeingcleaned,pushingtheCLEANbuttonwillresetthe
timer and restart the "Clean Mode".
1.4 MIX LEVEL INDICATORS
Thehoppersareequippedwithasensorthatmonitorsmix
level.Whenthemixleveldropsbelowthesensorprobe,the
lowerlineofthedisplaywillread"LowMix"andthedisplay
will flash. To clear the "Low Mix" error, add mix to the
hopper.
1.5 HOPPER REFRIGERATION
TheIntelliTeccontrolisprogrammedtohandlerefrigeration
ofthehopperindependentlyfromthefreezingcylinder.The
left control maintains hopper temperature between two
presetvalues(HprCutInandHprCtOut).
NOTE
TheRefrigersetting should be 2Hopper for the Left
control and None for the right control.
Thehopperrefrigerationcyclestartswhenthetemperature
ofeitherhopperreachestheHprCutInvalueandstopswhen
bothhoppersreachtheHprCutOutvalue.
In addition to this refrigeration cycle, hopper refrigeration
may start when the freezing cycle starts. This reduces
compressorcycleswhichpreservescompressorlife.Hop-
perrefrigerationwillstartifthehoppertemperatureisabove
apresetvalue(HprOffst+HprCtOut).Thisvalueisalways
betweenHprCutInandHprCtOut.Refrigerationofthehop-
perwill continue untilthe HprCtOutis reachedor untilthe
freezing cycle is completed in the freezing cylinder.
Therefrigerationcyclewillrunforamaximumof4minutes.
After 4 minutes, the refrigeration cycle will stop for a
minimum of 3 minutes. At the expiration of 3 minutes, the
controlwillcheckproducttemperature.Ifproducttempera-
tureisatoraboveHprCutIn,anotherrefrigerationcyclewill
start. NOTE
If the temperature in the cabinet stays above 50°F
formorethantwohoursinmachineswiththeIntelliTec
version3.9andhigher,themachinewillgointoSleep
Mode and a clean message will be shown on the
display.
1.6 OPERATION DURING SENSOR FAILURE
The IntelliTec control is designed to allow the machine to
continuetofunctionifatemperaturesensorfailureoccurs.
If a sensor fails, the display will show the error and the
controlwillrunthemachineontimersforthefreezingcycle
orhopperrefrigeration.Thisallowstheoperatortocontinue
toserveproductfromthemachineuntilproperservicingcan
becompleted.
A.SERVEANDSTANDBYMODE
In the event of a temperature sensor failure on a freezing
cylinder, the IntelliTec control will function in two modes,
"ServeMode"and"StandbyMode".Whentheproductisat
consistencyin"ServeMode",theIntelliTeccontrolusesa
timer instead of the sensor and will not start another
freezingcycleuntilapresetvalue(DftOffTme)ismet.
The control will monitor product after it is at consistency,
activatingthestircycleandcountingthenumberofcycles.
When the cycle count is reached, the control will move to
"StandbyMode".
The "Standby Mode" is the same as in normal operation
with the exception of when the preset time (Stb Time) is
met,thecontrolmovesbackintothe"ServeMode".Refer
toFigure 1-7 for details.
Intheeventahoppertemperaturesensorfails,thecontrol
willuse the temperature of theotherhoppertocontrolthe
refrigerationcycle.
If both temperature sensors fail, the refrigeration cycle is
managed by preset times (Hpr On and Hpr Off). This
refrigerationcycle is independent of the freezingcycle.
1.7 MOTOR PROFILE CUTOUT
COMPENSATION
The IntelliTec control is programmed to automatically
functionatarangeofsupplyvoltages.Thisfeatureprovides
the advantage of having product maintained at a specific
temperature and consistency irrespective of the supply
voltage. A motor profile curve is programmed on the
IntelliTeccontrolandprovidesarelationshipbetweenthe
supplyvoltageanddrivemotorcutoutamperage.Depend-
ingonthesupplyvoltage,thecontrolvariescutoutamper-
ageaccordingtothemotorprofile.Thisfeatureisautomatic
anddoesnotneedanyconfiguring.
Figure 1-7 Serve Mode (Sensor Failure)

6
Table 1-1 IntelliTec Control Setting Specifications
Basic Menu DISPLAY LEFT RIGHT MODE DEFINITION
CutOut 50 sec 50 sec Serve Amp draw setting for cut out
Cut In T 19°F 23ºF Serve Temperature setting for cut in
Cycles 20 20 Serve Freezing cycles before going into Standby Mode
Stir On 15 sec 15 sec Serve Stir-only on time
Stir Off 300 sec 300 sec Serve Stir-only off time
Advanced Menu DISPLAY MODE DEFINITION
On Time Standby Freezing cycle "on” time (runs on timers only)
Off Time Standby Freezing cycle “off” time
Stb Time Standby Total time in mode
Sl1DrvOn Sleep 1 Drive motor “on” timer
Sl1DrOff Sleep 1 Drive motor “off” timer
Sl2CutIn Sleep 2 Cut in temperature
Sl2CtOut Sleep 2 Cut out temperature
DftOffTm No Sensor Default “off” time. Used in case of sensor failure
Storage Menu DISPLAY MODE DEFINITION
Refriger All Set to None, 1 Hopper, 2 Hopper, or Cabinet
HprCutIn All Refrigerated cab cut in temperature
HprCtOut All Refrigerated cab cut out temperature
Hpr Off No Sensor Default “off” time. Used in case of sensor failure
Hpr On No Sensor Default “on” time. Used in case of sensor failure
** The Refriger setting on the right control board must be set to None.
27°F
13 sec
130 sec
* The CutOut value needs to be adjusted to product requirements. Refer to the 2183393 - Specification Sheet for SF144
Intellitec Control located in the plastic pouch behind the left side panel.
SF144
** 2 Hopper
31.5°F
600 sec
180 sec
33°F
30.5°F
IntellITec Control Setting Specifications
15 sec
450 sec
120 min
120 sec
SF144

9
SECTION 2
INSTALLATION INSTRUCTIONS
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.
Takenoticeofallwarninglabelsonthemachine.Thelabels
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
the part number, type of label, location of label, and
quantityrequired along withyour addressand mailto:
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
mayhaveoccurredduringtransit.
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
concealeddamage and/or shortage isfoundlater,advise
the carrier within 10 days and request inspection. The
customermustplaceclaimfordamagesand/orshortages
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.
Incorrectinstallationmay causepersonal injury, se-
vere damage to the machine and will void factory
warranty.
Installation of the machine involves moving the machine
closetoitspermanentlocation,removingallcrating,setting
in place, assembling parts, and cleaning.
A. Uncratethemachine.
B. Accuratelevelingisnecessaryforcorrectdrainage
of machine barrel and to insure correct overrun.
Placeabubblelevelontopofthemachineateach
cornertocheckforlevelcondition.Ifadjustmentis
necessary,levelthemachinebyturningthebottom
part of each leg in or out.
C. The machine has a base gasket that must be
installed.Separatethegasketandinstallitwiththe
seamtotheback.Makesuretheangledsideofthe
gasket is facing up.
C. Correctventilationisrequired.Therightsideofthe
machine is the air intake and left side is the
discharge. Both sides must have 3" clearance.
CAUTION
Failuretoprovideadequateventilationwillvoidwar-
ranty.
D. PlacetheMainFreezerPowerOff/Onswitchinthe
OFFposition.
E. Connect the power cord to the proper power
supply. The plug connected to the machine is a
NEMA 6-20P. Check the nameplate on your
machine for proper supply. The unit must be
connectedtoaproperlygroundedreceptacle.The
electricalcordfurnishedaspartofthemachinehas
athreepronggrounding type plug. The useof an
extensioncordisnotrecommended,ifnecessary
useonewithasize12gaugeorheavierwithground
wire. Do not use an adapter to circumvent the
groundingrequirement.
WARNING
Do not alter or deform electrical plug in any way.
Altering the plug to fit into an outlet of different con-
figuration may cause fire, risk of electrical shock,
productdamageandwillvoidwarranty.
Figure 2-1 Space and Ventilation Requirements

10

11
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
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.
3.2 OPERATING CONTROLS AND
INDICATORS
Before operating the machine, it is required that the
operatorknowthefunctionofeachoperatingcontrol.Refer
toFigure3-1forthelocationoftheoperatingcontrolsonthe
machine. For the information regarding error codes dis-
played on the control panel, refer to the troubleshooting
section of this manual.
WARNING
High voltage will shock, burn or cause death. The
OFF-ONswitch must be placedin the OFFposition
prior to disassembling for cleaning or servicing. Do
not operate machine with panels removed.
Figure 3-1 Machine Controls
IntelliTec Control
(See Figure 3-2)
Blender Power
and Reset
Freezing Cylinder
Off/On Switch
Dispense Rate
Adjustor
Blender Hi-Low
Switch

12
A.MAINFREEZERPOWERSWITCH
The Main Freezer Power switch is a two position rocker
switch that supplies power to the IntelliTec control, freez-
ingcylindercircuitsandhopperrefrigerationsystem.When
the switch is placed in the ON position, the hopper refrig-
eration system will run until the preset temperature is
reached; then it will cycle ON and OFF to maintain that
temperature.
B. FREEZING CYLINDER OFF/ON SWITCH
The Freezing Cylinder OFF/ON switch is a two position
toggleswitchusedtosupplypowertothefreezingcylinder
controlcircuit.Whentheswitchis intheOFFposition, the
freezingcylinder’s refrigeration system and auger willnot
operate. When the switch is in the ON position, the
machinewillbeoperational.
C. SPIGOT SWITCH
Thespigotswitchismounted to the spigot cam 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 the spigot handles. Turn-
ingtheknobcounterclockwisewilldecreasethedispense
rate.
E. PUSH TO FREEZE BUTTON
The PUSH TO FREEZE button is a membrane or 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.
F. 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.BothLEDsalternatively flashifan
error occurs or if the freezing cylinder is off.
G. CLEAN BUTTON
TheCLEANbuttonis amembrane,orsnapswitch.When
the button is pressed, the freezing cycle stops and the
drivemotorwillstart.ACLEANmessagewilldisplayonthe
LCD screen along with a 5-minute countdown timer. To
exittheCLEANmode,turntheFreezingCylinderOFF/ON
switch to the OFF position or press the CLEAN button
again. If the machine is left in CLEAN for more than 20
minutes,anerrorcode(E4)willbedisplayedonthedisplay
panel. Place the Freezing Cylinder OFF/ON switch in the
OFF position and back in the ON position to clear this
error.
H.DRIVEMOTOROVERLOAD
Theinternaldrivemotoroverloadwilltripifthedrivemotoris
overloaded.Itwillresetafterapproximately10-12minutes.
Ifthedrivemotorcontinuestotrip,refertoTroubleshooting
in Section 7.
I. MIX LOW LIGHT INDICATOR
A MIX LOW message will appear on the LCD display to
alerttheoperatorofalowmixcondition.Themessagewill
displaywhenthere is approximately one gallonof mix left
inthehopper.WhentheMIXLOWmessageisdisplayed,
refill the hopper immediately.
L. MENU NAVIGATION BUTTONS
The Menu Navigation Buttons allow the user to display
informationregardingthemachine’sstatusofoperationas
well as adjust product consistency (Fig. 3-2).
Selection Button (SEL) The SEL button is used
in combination with the up arrow button to enter
into the settings of the IntelliTec control. This
buttonisalsousedtonavigatethroughthecontrol
settings menu.
SetButton(SET)TheSETbuttonisusedtosave
achangemadetotheproductconsistencysetting.
It is also used to save changes when modifying
control settings.
Left Arrow Button 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.
UpArrowButtonAfterpressingtheSETbutton,
the up arrow button will change the value of the
product consistency setting. This button is also
usedtonavigatethroughthe control settings.
Figure 3-2 IntelliTec Control
Push to Freeze
Green LED
Amber LED
SEL Button
SET Button
Clean Button
Up Arrow Button
Left Arrow Button

13
3.3IMPORTANTINFORMATIONREGARDINGCLEANING
ANDSANITIZING
Softservemachinesrequirespecialconsiderationwhenit
comes to food safety and proper cleaning and 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
difficulttoremoveandhelpattributetomilkstonebuildup.
MILKSTONE – Is a white/gray film that forms on equip-
ment and utensils that are exposed to dairy products.
Thesefilmswillaccumulateslowlyonsurfacesbecauseof
ineffectivecleaning,useof hard water, or both. 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
operatorsoffrozendessertmachines.
SANITIZING
· Kills bacteria.
· Canbeeffectiveoncleansurfacesonly.
NOTE
Using a SANITIZER on an unclean surface will not
guaranteea clean and safe frozendessertmachine.
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–Thisinvolvesdrainingmixfrom the
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
providedwithdelimerproducts.

14
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,
tearoffa small portion and submergeit into the 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
Followthe directionsonthecontainerforproper con-
centration.
Twomain factorscontribute tofalling chlorineconcentra-
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
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.
Todisassemblethemachine,refertothefollowingsteps:
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. Removethespigotthroughthebottomofthefront
door.
5. Remove all o-rings from parts by first wiping off
thelubricationusingacleantowel.Thensqueeze
theo-ringupwardtoformaloop(Fig.3-4).Rollthe
o-ring out of the groove.
Wear Line
Figure 3-3 Auger Flight Wear
Figure 3-4 Removing O-Ring
CAUTION
Do not use any type of sharp object to remove the
o-rings.
WARNING
High voltage will shock, burn or cause death. The
OFF-ONswitch must be placedin the OFFposition
prior to disassembling for cleaning or servicing. Do
not operate machine with panels removed.

15
D. Cleantherearsealsurfacesfromtheinsideofthe
freezingcylinderwiththe90°to110°F(32°to43°C)
detergentwater.
3.6 SANITIZING MACHINE PARTS
A. UseStera-Sheenorequivalentsanitizingsolution
mixedaccordingtomanufacturer’sinstructionsto
provide a 100 parts per million strength solution.
Mixsanitizerinquantitiesofnolessthan2gallons
of90°to110°F(32°Cto43°C)water.Anysanitizer
must be used only in accordance with the
manufacturer’s instructions.
B. Place all parts in the sanitizing solution for 5
minutes, then remove and let air dry completely
beforeassemblinginmachine.
3.7 CLEANING THE MACHINE
Theexteriorshouldbekeptcleanatalltimestopreservethe
lusterofthestainlesssteel.Ahighgradeofstainlesssteel
hasbeenusedonthemachinetoeasecleanup.Toremove
spilled or dried mix, wash the exterior with 90° to 110°F
(32°Cto43°C)detergentwaterandwipedry.
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.Cleanandreplace the drip tray.
B.DISASSEMBLYOFAUGER
1. Removethefrontaugersupportandbushing.
2. Remove the auger assembly from the machine.
Pulltheaugeroutofthemachinebarrelslowly.As
the auger is being pulled out, carefully remove
each of the plastic flights with springs.
3. Keeptherearoftheaugertippeduponceitisclear
of the freezing cylinder to prevent the rear seal
assembly from dropping.
4. Wipethespline lubricant offof thehexend of the
auger with a paper towel. Remove the rear seal
assembly(Fig. 3-5).
5. Unscrewthespringsfromtheaugerflights.
3.5 CLEANING DISASSEMBLED PARTS
Disassembled machine parts require complete cleaning,
sanitizing and air drying before assembling. Local and
state health codes will dictate the procedure required.
Somestatehealthcodesrequireafoursinkprocess(pre-
wash,wash,rinse,sanitize,airdry),whileothersrequirea
three sink process (without the pre-wash step). The fol-
lowing procedures are a general guideline only. Consult
your local and state health codes for the procedures
required in your location.
A. Prepare detergent water by mixing 2 oz. of
Palmolive detergent or equivalent in 2 gallons of
90° to 110°F (32° to 43°C) water. Place all parts
in the detergent solution and clean with provided
brushes.
B. Rinse all parts with clean 90° to 110°F (32° to
43°C) water.
C. Wash the hopper and freezing cylinder with the
90° to 110°F (32° to 43°C) detergent water and
brushesprovided(RefertoFigure3-6).
Figure 3-5 Rear Seal Assembly
Figure 3-6 Clean Hoppers

16
3.8 ASSEMBLING MACHINE
Toassemblethemachineparts,refertothefollowingsteps:
NOTICE
Petrol-Gel sanitary lubricant or equivalent must be
usedwhenlubricationofmachine parts is specified.
NOTICE
The United States Department of Agriculture and
the Food and Drug Administration require that lu-
bricants used on food processing equipment be
certified for this use. Use lubricants only in accor-
dance 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. Lubricate the rear seal area on the auger shaft
with a thin layer of sanitary lubricant. Install the
rear seal o-ring. Lubricate the outside of the rear
seal o-ring with sanitary lubricant.
C. Installthestainlesssteelrearsealadapterintothe
rear seal dry (without lubricant). Lubricate the
inside metal surface of the rear seal adapter and
installitontotheaugershaft.DONOTlubricatethe
outsideoftherear auger seal (Fig. 3-6).
D. Lubricatethehexdriveendoftheaugerwithasmall
amount of spline lubricant. A small container of
spline 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
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.
I. Apply a thin layer of sanitary lubricant to the o-
ringsonthespigotbodyandinstallthespigotbody
through the bottom of the front door.
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. Securethefrontdoortothemachinebyplacingthe
knobsonthestudsandtighteninguntilfingertight.
Do not overtighten. A 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
cleaningand sanitizing solutions usedwithfoodpro-
cessing equipment be certified for this use.
Whensanitizingthemachine,refertolocalsanitaryregu-
lationsfor applicablecodesandrecommendedsanitizing
products and procedures. The frequency of sanitizing
must comply with local health regulations. Mix sanitizer
accordingtomanufacturer’s instructions to provide a100
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
sanitizedfor5minutes.Anysanitizermustbeusedonlyin
accordance with the manufacturer’s instructions.
A. Prepare 2 gallons of sanitizing solution following
the manufacturer’s instructions.
B. Install the mix inlet regulator into the hopper.
C. Pour the sanitizing solution into the hopper.
Figure 3-6 Lubricate Rear Seal
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.