Vollrath STOELTING CF101 User manual

Model CF101
SERVICE MANUAL
Manual No. 513644 Mar. 2009

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 MachineInstallation ...................................................................................3
3 Initial Set-Up and Operation
3.1 Operator’s Safety Precautions ...................................................................5
3.2 Operating Controls and Indicators .............................................................5
3.3 Sanitizing ...................................................................................................6
3.4 Freeze Down and Operation ......................................................................7
3.5 Mix Information ..........................................................................................8
3.6 Removing Mix from Machine .....................................................................8
3.7 Cleaning the Machine ................................................................................8
3.8 Disassembly of Machine Parts...................................................................8
3.9 Cleaning the Machine Parts .......................................................................9
3.10 Assembly of Machine.................................................................................9
3.11 RoutineCleaning .......................................................................................10
3.12 Cleaning and Sanitizing Information...........................................................10
4 Maintenance and Adjustments
4.1 Machine Adjustment ..................................................................................13
4.2 Obtaining Readings and Modifying Settings (Service Personnel Only) ......13
4.3 Readings (Service Personnel Only) ...........................................................13
4.4 Settings (Service Personnel Only) .............................................................14
4.5 Drive Belt Tension Adjustment...................................................................15
4.6 PreventativeMaintenance..........................................................................15
4.7 Extended Storage ......................................................................................16
TABLE OF
CONTENTS

Section Description Page
5 Refrigeration System
5.1 Refrigeration System .................................................................................17
5.2 Refrigerant Recovery and Evacuation........................................................17
5.3 Refrigerant Charging..................................................................................18
5.4 Compressor ...............................................................................................19
5.5 Condenser .................................................................................................20
5.6 Evaporator .................................................................................................20
5.7 Valves........................................................................................................20
A. Thermostatic Expansion Valve (TXV)..................................................................20
B. Check Valve ........................................................................................................21
C. High Pressure Cutout ..........................................................................................22
D. Hot Gas Bypass...................................................................................................22
E. Evaporator Pressure Regulator (EPR) ................................................................23
5.8 Solenoid.....................................................................................................23
5.9 Filter Drier..................................................................................................25
5.10 Capillary Tube............................................................................................25
5.11 Receiver ....................................................................................................25
6 Electrical and Mechanical Control Systems
6.1 IntelliTec Controller ....................................................................................27
6.2 Contactors .................................................................................................27
6.3 Drive Motor ................................................................................................28
6.4 Capacitors .................................................................................................29
6.5 Gearbox.....................................................................................................29
6.6 Condenser Fan Motor ................................................................................30
6.7 PotentialRelay...........................................................................................30
6.8 Temperature Control Sensor .....................................................................30
7 Troubleshooting
7.1 Error Codes ...............................................................................................31
7.2 Troubleshooting Error Codes.....................................................................31
7.3 Troubleshooting Tables .............................................................................33
8 Replacement Parts
8.1 Decals and Lubrication ..............................................................................35
8.2 Panels and Panel Screws ..........................................................................35
8.3 Beater Shaft and Faceplate Parts ..............................................................36
8.4 Hopper Parts and Trays.............................................................................37
8.5 Electrical Panel ..........................................................................................38
8.6 Front ..........................................................................................................39
8.7 Rear...........................................................................................................40
8.8 Left Side ....................................................................................................41
8.9 Wiring Diagram..........................................................................................42

1
1.1 DESCRIPTION
The CF101 is a counter top continuous flow custard
machine. It is equipped with fully automatic controls to
provide a uniform product and features Quick-Freeze
technology. This manual is designed to assist qualified
servicepersonnelandoperatorsintheinstallation,opera-
tion and maintenance of the CF101 frozen custard ma-
chine.
SECTION 1
DESCRIPTION AND SPECIFICATIONS
Figure 1-2 MachineSpecifications
Figure 1-1 Model CF101

2
1.2 SPECIFICATIONS
CF101
Refrigerant R-404A
Charge No Receiver 64 oz
With Receiver 80 o
z
Superheat out of
Evaporator 8°F
Suction Pressure
(at 72°F)
Freezing Cylinder Only19-20 psig
Freezing Cylinder & Hopper 23 psig
HopperOnly14 psig
Discharge Pressure 235-305 psig
Hot Gas Bypass
Pressure 14 psig (onlyhopper running)
EPR Valve 46-48 psig
Menu Display Value
Product 1 Cut In T 3 °F
Cut Out T -20 °F
Product 2 Cut In T 3 °F
Cut Out T -13 °F
OnTime 180 seconds
OffTime 30 seconds
Standby Cut In T 35 °F w/Receiver
25 °F w/o Receiver
Cut Out T 25 °F w/Receiver
15 °F w/o Receiver
OnTime 60 seconds
OffTime 900 seconds
Storage HprCutIn 27.5 °F
HprCtOut 26.5 °F
Hpr On 100 seconds
Hpr Off 6 minutes
Dimensions
width
height
depth
Weight
Electrical
connection type
Compressor
Drive Motor
Air Flow
Hopper Volume
Freezing Cylinder
Volume
CF101
Machine with crate
19-1/2'' (49,5 cm) 38-3/4'' (98,4 cm)
310 lbs (140,6 kg) 380 lbs (172,3 kg)
1 Phase, 208-240 VAC, 60Hz
37-3/4'' (95,9 cm) 28-3/4'' (73,0 cm)
28'' (71,1 cm) 43'' (109,2 cm)
NEMA6-20P power cord provided
Air cooled units require 6" (15,2 cm)air space at left and right sides and 10"
(25,4) air space above the machine.
0.8 gallon(3.2 quart),3,03 liters
5.4 gallon(30,28 liters)
14,000 Btu/hr
1-1/2 hp

3
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.
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
customermustplaceclaimfordamagesand/orshortages
in shipment with the carrier. Stoelting, Inc. cannot make
any claims against the carrier.
2.3 MACHINE INSTALLATION
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.
B. Accuratelevelingisnecessaryforcorrectdrainage
of the freezing cylinder and to insure correct
overrun.Placeabubblelevelontopofthemachine
at each corner to check for level condition. If
adjustment is necessary, level the machine by
turningthebottompartofeachleginorout.Then
separate machine base gasket and install with
seam to the back and angle to the top.
C. Correctventilationisrequired.TheCF101requires
a minimum of 6" (15,2 cm) air space at left and
right sides and 10" (25,4) air space above the
machine.
CAUTION
Failuretoprovide adequateventilation will voidwar-
ranty.
D. Place the Main Freezer Power Off/On switch in
the Off position.
E. Connect the power cord to the proper power
supply. The plug is designed for 208-240 Volt/20
ampduty.Checkthenameplateonyourmachine
forthepropersupply.Theunitmustbeconnected
toa properlygrounded receptacle.The electrical
cordfurnishedaspartofthemachinehasathree
pronggroundingtypeplug.Theuseofanextension
cord is not recommended, if necessary use one
witha size12 gaugeor heavierwith groundwire.
Do not use an adapter to get around grounding
requirement.
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,
product damage and will void warranty.
Figure 2-2 Space and Ventilation Requirements

4

5
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. Disconnectelectricalcordformaintenance.Never
attempt to repair or perform maintenance on the
machineuntilthemainelectricalpowerhasbeen
disconnected.
G. Donotoperateunderunsafeoperatingconditions.
Neveroperatethemachineifunusualorexcessive
noise or vibration occurs.
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.
WARNING
High voltage will shock, burn or cause death. The
Off/On switch must be placed in the OFF position
prior to disassembling for cleaning or servicing. Do
not operate machine with cabinet panels removed.
A. Main Freezer Power Off/On Switch
The Main Freezer Power Off/On switch is a two-
positiontoggleswitchusedtosupplypowertothe
control circuit. When the switch is in the Off
position, power will not be supplied to the control
boardorrefrigerationsystem.Whentheswitchis
put in the On position, the machine will be in
standbymode.ThedisplaywillreadStandbyand
the amber LED will light.
Figure 3-1 CF101 Controls
IntelliTec Control
(See Figure 3-2)
Main Freezer
Power Off/On
Product
Selector
Switch

6
B. Product Selector Switch
The product selector switch changes the
refrigerationprofiletoallowtwodifferentproducts
tobemade.Beforethemachineisinreadymode,
this switch can be moved to the desired profile.
C. PUSH TO FREEZE Button
The PUSH TO FREEZE button is used to initiate
the run mode. To start the machine, place the
Main Freezer Power Off/On switch in the On
positionandpressthePUSHTOFREEZEbutton.
D. LEDs
Themembraneswitchfeaturestwolights;agreen
LEDandanamberLED.ThegreenLEDwillflash
when the freezing cylinder is near ready mode
andstaylitduringreadymode.TheamberLEDis
lit during standby, purge and clean modes.
NOTE
Ifthe machineenters an errorcondition, alternating
green and amber lights will flash. The LCD will dis-
play an error. Turn the Main Freezer Power Off/On
switchtothe OFFposition, correctthe problem(Re-
fer to Troubleshooting in Section 4) and turn the
machine back on.
E. PURGE/CLEAN Button
PURGEMode-WhenthePURGE/CLEANbutton
ispressed,the beatershaft willrotate.A PURGE
messagewilldisplayonthescreenalongwitha5
minutetimer.Hopperrefrigerationwillcontinueto
run. When the timer gets to 0:00 and no other
buttons are pressed, the machine will go into
standby mode.
CLEAN Mode - During PURGE mode, if the
PURGE/CLEAN button is pressed and held for 3
seconds,theCLEANmodewillbegin.Thebeater
shaftwillcontinuetorotateandhopperrefrigeration
will stop.
F. Mix Low Light Indicator
The MIX LOW message will appear on the LCD
displaywhenthereisapproximatelyonegallonof
mix left in the hopper. When the MIX LOW
message is displayed, refill hopper immediately.
NOTE
Failure to refill hopper immediately may result in
operationalproblems.
G. Menu Navigation Buttons
The Menu Navigation Buttons are primarily used
for machine calibration.
Selection Button (SEL) The SEL button is not
functional in the normal operation mode. This
button is only used by service technicians for
machine calibration.
SetButton(SET)TheSETbuttonisnotfunctional
inthenormal operationmode. Thisbutton is only
used by service technicians for machine
calibration.
Left Arrow Button (Õ) Pressing any button on
the control panel will automatically illuminate the
display.Thebacklightwillturnoffseveralseconds
afteruse.Tokeepthedisplayconstantlylit,press
and hold the left (Õ) button for five seconds. The
backlightfunctioncanberesettonormaloperation
in the same manner.
Up Arrow Button (×) The ×button is not
functional in the normal operation mode. This
button is only used by service technicians for
machine calibration.
H. Front Door Safety Switch
The front door safety switch prevents the beater
shaftfromturningwhenthefrontdoorisremoved.
The switch is open when the door is not in place
and closed when the door is properly installed.
3.3 SANITIZING
Sanitizingmustbedoneafterthemachineiscleanedand
justbeforethehopperisfilledwithmix.Sanitizingthenight
beforeisnoteffective.However,youshouldalwaysclean
the machine and parts after each use.
THE UNITED STATES DEPARTMENT OF AGRI-
CULTURE AND THE FOOD AND DRUG ADMIN-
ISTRATION REQUIRETHATALLCLEANINGAND
SANITIZING SOLUTIONS USED WITH FOOD
PROCESSINGEQUIPMENTBE CERTIFIEDFOR
THIS USE.
Whensanitizingthe machine,referto localsanitaryregu-
lationsforapplicablecodesandrecommended sanitizing
products and procedures. The frequency of sanitizing
must comply with local health regulations.
Figure 3-2 IntelliTec Control
Push to Freeze
Green LED
Amber LED
SEL Button
SET Button
Purge/Clean
Button
Up Arrow Button
Left Arrow Button

7
Mix sanitizer according to manufacturer’s instructions to
provide a 100 parts per million strength solution. Mix
sanitizer in quantities of no less than 2 gallons (7.5 liters)
of 90° to 110°F (32° to 43°C) water. Allow sanitizer to
contact the surfaces to be sanitized for 5 minutes. Any
sanitizer must be used only in accordance with the
manufacturer’s instructions.
In general, sanitizing may be conducted as follows:
A. Prepare Stera-Sheen Green Label Sanitizer or
equivalent according to manufacturer’s
instructionstoprovidea100ppmstrengthsolution.
Mix the sanitizer in quantities of no less than 2
gallons of 90° to 110°F (32° to 43°C) water. Any
sanitizer must be used only in accordance with
the manufacturer’s instructions.
B. Place the tapered end of the flow valve into the
hopper drain hole with the arm pointing towards
the left. Connect the flow control rod to the flow
valve and the flow valve arm (Fig. 3-3).
C. Makesuretheflowcontrolvalveisshutbyturning
the control knob counterclockwise to the 12:00
position.
D. Place a bucket under the slide.
E. Pour the sanitizer into the hopper.
NOTE
Asmallamountofsanitizermaydraininto the bucket
with the flow control shut.
F. Place the Main Freezer Power Off/On switch in
the On position and press the PURGE/CLEAN
button. The display will read PURGE.
G. Press and hold the PURGE/CLEAN button for 3
seconds. The display will read CLEAN and a 20
minute timer will start.
G. Turntheflow controlknobfully open (clockwise).
H. Clean sides of hopper, flow valve and underside
ofhoppercoverusingasanitizedsoftbristlebrush
dipped in the sanitizing solution.
I. When the sanitizer has drained from the hopper,
press and hold the PURGE/CLEAN button for 3
secondstostopthebeatershaft.Allowthefreezing
cylinder to drain completely.
J. Shut off the flow control valve by turning the flow
control knob counterclockwise to the 12:00
position.
3.4 FREEZE DOWN AND OPERATION
This section covers the recommended operating proce-
durestobefollowedforthesafeoperationofthemachine.
A. Sanitize just prior to use.
NOTE
Makesure the flow control assembly is in place be-
foreadding mix and that the flow control knobis set
to the 12:00 position.
B. Fill hopper with approximately 3 gallons (11.4
liters) of pre-chilled (40°F or 4°C) mix.
E. Place the Main Freezer Power Off/On switch in
the On position. The display will read STANDBY
MODE.
F. PressthePUSHTOFREEZEbutton.Thedisplay
willread CUSTARDand a bar on thesecond line
willstarttofill.ForPRODUCT2,movetheproduct
selector switch to the PRODUCT 2 position.
NOTE
The product selector switch can be changed until
the READY message is displayed on the second
line.
G. When the display reads CUSTARD READY, the
freezing cylinder is at the correct temperature
(Fig. 3-4).
H. Open the front gate.
I. Turn the flow control knob clockwise to the 6:00
Figure 3-3 Flow Control Assembly
Figure 3-4 Custard Mode

8
position. A small amount of mix and remaining
sanitizer will drain from the machine.
J. Turntheflowcontrolknobbetweenthe1:00-2:00
position for vanilla or between the 5:00-6:00 for
chocolate.Afterafewminutes,aribbonofproduct
starts to form.
K. Adjustthe flowcontrolknobuntiltheproductflow
fills the faceplate outlet and is at the desired
texture (Fig. 3-5). The flow control knob setting
will be different for each type of product.
NOTE
Adjustments take up to 1 minute before a notice-
able difference is seen in the product.
NOTE
A high-pitched noise from the freezing cylinder is
an indication that there is not enough mix entering
thefreezingcyliner.Slowly turntheflowcontrol knob
clockwise to increase the flow. It can take up to 1
minute for the adjustment to stop the noise.
3.5 MIX INFORMATION
Mix can vary considerably from one manufacturer to
another. Differences in the amount of butterfat content
and the quantity and quality of other ingredients have a
directbearingonthe finished frozenproduct.Achange in
machine performance that cannot be explained by a
technical problem may be related to the mix.
Proper product serving temperature varies from one
manufacturer’s mix to another. When checking the tem-
perature,stirthethermometerinthefrozenproducttoread
the true temperature.
Old mix or mix that has been stored at elevated tempera-
tureswillproducepoor-qualityproductwithabadtasteand
unacceptable appearance. To retard bacteria growth in
dairybasedmixes,thebeststoragetemperaturerangeis
between 36° to 40°F (2.2° to 4.4°C).
3.6 REMOVING MIX FROM MACHINE
Toremovethemixfromthemachine,refertothefollowing
steps. Make sure the gate on the faceplate is open.
A. Press the PURGE/CLEAN button. The display
will read PURGE.
B. Press and hold the PURGE/CLEAN button for 3
seconds. The display will read CLEAN and a 20
minute timer will start.
C. Opentheflowcontrolvalvefullybyturningtheflow
controlknobclockwiseuntilthepointerisnearthe
12:00 position.
D. After the hopper and freezing cylinder have
drained, place the Main Freezer Power Off/On
switch in the OFF position.
3.7 CLEANING THE MACHINE
NOTE
Thefrequencyofcleaningthemachineand machine
parts must comply with local health regulations.
After the mix has been removed from the machine, the
machinemust be cleaned.To clean themachine, refer to
the following steps:
A. Placeacontainerundertheslideofthefaceplate.
Fill the hopper with 2 gallons (7.5 liters) of tap
water.
B. Place the Main Freezer Power Off/On switch in
theOnposition.PressthePURGE/CLEANbutton.
The display will read PURGE.
C. Press and hold the PURGE/CLEAN button for 3
seconds. The display will read CLEAN and a 20
minute timer will start.
D. When the water has drained, place the switch in
the OFF position. Allow the freezing cylinder to
draincompletely.
E. Prepare detergent water by mixing 2 oz. of
Palmolive detergent or equivalent in 2 gallons of
90°to110°F(32°to43°C)water.RepeatstepsA
through D using the detergent solution.
3.8 DISASSEMBLY OF MACHINE PARTS
Inspectionfor worn orbroken partsshould bemade each
time the machine is disassembled. All worn or broken
parts should be replaced to ensure safety to both the
operatorandthecustomerandtomaintaingoodmachine
performanceandaqualityproduct.Frequencyofcleaning
must comply with local health regulations.
Figure 3-5 Proper Flow

9
NOTE
The United States Department of Agriculture and
the Food and Drug Administration require that lu-
bricantsused onfoodprocessing equipmentbecer-
tifiedfor thisuse. Uselubricantsonly inaccordance
with the manufacturer’s instructions.
A. Coat the rear seal with a generous amount of
Petrol Gel.
B. Install the rear seal onto the beater shaft.
C. Lubricate the drive (rear) end of the beater shaft
with a small amount of white socket lubricant. A
smallcontainerofsocketlubricantisshippedwith
the machine.
D. Installtwoofthespringsandbladesontotherear
of the beater shaft and insert the shaft part way
intofreezingcylinder.Rotatetheshaftsoanother
spring and blade can be placed onto it.
E. Installtheremainingblades,pushthebeatershaft
into the freezing cylinder and rotate it slowly until
the shaft engages the drive coupling.(Fig. 3-6).
F. Lubricatetheinsideandoutsideofthewearguard
and install it onto the beater shaft (Fig. 3-7).
Todisassemblethe machine,referto thefollowingsteps:
CAUTION
Hazardous Moving Parts
A revolving beater shaft shaft can grab and cause
injury. Place the MainFreezer Power Off/Onswitch
inthe OFFposition before disassemblingfor clean-
ing or servicing.
A. Remove the flow control rod and flow control
valve from the hopper by pulling straight up.
C. Removetheslidefrom thefaceplateand remove
the faceplate.
D. Remove the beater shaft wearguard.
F. Remove the beater shaft assembly from the
machine. Pull the beater shaft out of the freezing
cylinderslowly. As it isbeing pulled out, carefully
remove each of the blades and springs.
G. Remove the seal from the back of the beater
shaft.
I. Wipesocketlubricantfromthedriveend(rear)of
the beater shaft with a cloth or paper towel.
3.9 CLEANING THE MACHINE PARTS
Place all loose parts in a pan or container and take to the
wash sink for cleaning. To clean the parts refer to the
following steps:
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.
B. Placeallpartsindetergentsolutionandcleanwith
the provided brushes.
C. Wash the hopper and freezing cylinder with the
detergent water and brushes provided.
D. Wash the inside of the freezing cylinder with the
detergentwater.
E. Rinse all parts with clean 90° to 110°F (32° to
43°C) water. NOTE
If the machine is not going to be immediately oper-
ated, store the faceplate in a clean and sanitized
container in a cooler.
3.10 ASSEMBLY OF MACHINE
To assemble the machine parts, refer to the following
steps: NOTE
Petrol Gel sanitary lubricant or equivalent must be
used when lubrication of parts is specified.
Figure 3-6 Installing Blades
Figure 3-7 Install Front Wear Bushing

10
G. Install the large o-ring onto the front plate and
install the faceplate onto the machine (Fig. 3-8).
H. Install slide, hopper cover and drain tray.
3.11 ROUTINE CLEANING
Toremove spilledor dried mixfrom themachine exterior,
wash in the direction of the finish with warm soapy water
andwipedry.Donotusehighlyabrasivematerials,asthey
will mar the finish.
3.12 CLEANING AND SANITIZING
INFORMATION
Special consideration is required when it comes to food
safety and proper cleaning and sanitizing.
The following information has been compiled by Purdy
ProductsCompany,makersofStera-SheenGreenLabel
Cleaner/Sanitizerandspecificallycoversissuesforclean-
ingandsanitizingfrozendessertmachines.Thisinforma-
tionismeanttosupplementacomprehensivefoodsafety
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-
mentandutensilsthatcomeincontactwithdairyproducts.
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
weartomachinepartswhichcanaddtocostsforreplace-
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.
PROPERDAILY MAINTENANCE: THE ONLYWAY TO
ASSUREFOODSAFETYANDPRODUCTQUALITY
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 almost all
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, it will usually follow the
cleaning procedure. It requires letting a delimer
Figure 3-8 Install Faceplate

11
solution soak in the machine for an extended
period. Individual parts are also soaked in a
deliming solution for an extended period (more
about delimers in Additional Information).
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 and handling them requires safety
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.
• BLEACHISCORROSIVE.Itcanandwilldamage
componentsof themachinecausingprematurewearand
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.
There are two main factors that contribute to falling chlo-
rine concentrations 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.

12

13
4.1 MACHINEADJUSTMENT
This section is intended to provide maintenance person-
nel with a general understanding of the machine adjust-
ments. It is recommended that any adjustments in this
section be made by a qualified person.
4.2 OBTAINING READINGS AND
MODIFYING SETTINGS (SERVICE
PERSONNEL ONLY)
Readings and Settings on the IntelliTec control are ac-
cessed through the IntelliTec control menu settings. Lo-
cating the readings and settings are done using the up
arrow (⇑) and left arrow (⇐) buttons on the membrane
switch.AprintedIntelliTecMenuSettingssheetislocated
in the information pouch behind the header panel.
IntelliTec Control Readings
To obtain machine readings, locate the value on the
machine's menu settings sheet and follow the steps
below.
A. Press and hold the SEL button for 8 seconds.
While still holding the SEL button, press the up
arrow button (⇑). The LCD screen will read
DISPLAY.
B. Release both buttons.
C. Press the up arrow button (⇑) to navigate to the
correct reading under DISPLAY or press the left
arrow (⇐) button to navigate to the ERRCODES
menu.
D. Presstheuparrow(⇑)andleftarrow(⇐)buttons
to navigate through the rest of the readings as
needed.
E. Whenallreadingshavebeenobtained,pressthe
uparrowbutton(⇑)fromExitMenutoreturntothe
current mode display.
SECTION 4
MAINTENANCE AND ADJUSTMENTS
Modifying Control Settings
Tochangethevalueofasetting,locateitontheIntelliTec
Menu Settings sheet and follow the steps below.
IMPORTANT:
Before making changes to any settings, record the
originalvalues.Ifthe setting changesdonotachieve
desired results, return settings to their original val-
ues.
A. Press and hold the SEL button for 8 seconds.
While still holding the SEL button, press the up
arrow button (⇑). The LCD Screen will read
DISPLAY.
B. Release both buttons.
C. Presstheleftarrowbutton(⇐)togettothecorrect
menu (Product1, Product 2, Stand By, Storage).
D. Press the up arrow button (⇑) to navigate to the
value that needs to be changed.
E. Press the SET button to enter the edit mode.
F. Press the up arrow button (⇑) to change the
setting.
G. Pressthe SETbutton tosave thesetting andexit
the edit mode.
H. Press the up arrow (⇑) and the left arrow (⇐)
buttonstonavigatethroughtherestofthesettings
as needed.
I. When all changes have been completed, press
theuparrowbutton(⇑)fromExitMenutoreturnto
the current mode display.
4.3 READINGS (SERVICE PERSONNEL
ONLY)
The IntelliTec control continuously monitors and records
temperatures, voltages, amps, and error code details.
Each reading is beneficial to service personnel when
troubleshooting.
DISPLAYREADINGS
Following are the readings available under the DISPLAY
menu:
HopperThe temperature of the hopper is constantly
monitored by the IntelliTec control.
°F and amps
Suctionline temperatureon thefreezing cylinder
and drive motor amps are available on the same
screen to assist with setup and troubleshooting.
Aux. Temp (°F)
This reading provides the ambient temperature
around the IntelliTec control board.
Figure 4-1 Membrane Switch

14
Supply V (VAC)
The input voltage is recorded.
ERROR CODE READINGS
ThefollowingdetailsarerecordedundertheERRCODES
menu for each of the last 25 error codes received:
Err1 (hours)
A timer begins when an error occurs. The timer
records the number of hours since the error
occurred. If power to the machine is interrupted,
the timer will stop until power has been restored.
°F and amps
The suction gas temperature on the freezing
cylinderandthedrivemotorampsarerecordedat
the time of the error.
Aux. Temp (°F)
AmbienttemperatureoftheIntelliTeccontrolboard
is recorded at the time of the error.
Str (°F) The storage temperature is recorded at the time
of the error.
VAC and Mode
The input voltage and mode at which the error
occurred are recorded. See the table below for
descriptions of each mode (Fig. 4-2).
Up Time (hours)
Thisvalueisarecordofthetotaltimethemachine
has been in service. If power is interrupted, the
timer will stop until power is restored. This timer
does not reset.
4.4 SETTINGS (SERVICE PERSONNEL
ONLY)
Changing any setting on the IntelliTec control will alter
machine operation and affect the product temperature,
consistency, or life. Refer to the IntelliTec Menu Settings
sheetlocatedin theinformationpouch behindthe header
panelofthemachine.Ifanyofthefollowingsettingsonthe
IntelliTeccontroldifferfromthesettingssheet,itisrecom-
mended to return those settings to factory defaults.
PRODUCT1 AND PRODUCT2 MENUS:
Cut In T (°F)
This setting determines when refrigeration will
start during Run Mode.
Cut Out T (°F)
This setting determines when refrigeration stops
during Run Mode.
Product 1 / Product 2
ThistextisshownonthetoplineafterthePushTo
Freeze button is pressed. The default value is
“CUSTARD” for Product 1 and “PRODUCT2” for
Product 2.
On Time (sec)
In case of a temperature sensor failure, this
setting determines the length of a refrigeration
cycle.
Off Time (sec)
In case of a temperature sensor failure, this
setting determines the amount of time between
refrigerationcycles.
Code Description Compressor Drive Motor Details
1 Start-Up Off Off
2 Standby Off Off Waiting for a Cycle
3 Standby Off Off
4 Standby On Off
5 Standby Off Off Sensor Fail
6 Standby On Off Sensor Fail
7 Freeze Down On Off Product 1
8 Run Mode On On Product 1
9 Run Mode Off On Product 1
10 Freeze Down On Off Product 2
11 Run Mode On On Product 2
12 Run Mode Off On Product 2
13 Sensor Fail On On Product 1
14 Sensor Fail On On Product 2
15 Sensor Fail Off On Product 2
16 Purge Mode Hopper Only On
17 Clean Mode Off Off
18 High Pressure Cutout Off Off
19 Door Safety Switch Triggered Off Off
Figure 4-2 Modes When Error Occurs