Stoelting F112 User manual

Model E112/F112
OWNER’S MANUAL
Manual No. 513613 Rev.2 August, 2007

This manual provides basic information about the freezer. 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 freezer without notice, and without incurring any obligation to modify or provide
new parts for freezers built prior to date of change.
DO NOT ATTEMPT to operate the freezer 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 freezer, contact the company
at the following location:
STOELTING, LLC Ph: 800-558-5807
502 Hwy. 67
Kiel, WI 53042 Fax: [phone]
Owner's Manual
For E112 and F112
Stoelting Counter Model Gravity Freezer
Shake and Frozen Beverage

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

Section Description Page
1 Description and Specifications
1.1 Description.................................................................................................1
1.2 Specifications.............................................................................................2
2 Installation Instructions
2.1 SafetyPrecautions.....................................................................................5
2.2 Shipment and Transit.................................................................................5
2.3 FreezerInstallation ....................................................................................5
3 Initial Set-Up and Operation
3.1 Operator’s Safety Precautions ...................................................................7
3.2 Operating Controls and Indicators .............................................................7
3.3 Sanitizing ...................................................................................................8
3.4 Freeze Down and Operation ......................................................................9
3.5 Mix Information ..........................................................................................9
3.6 Removing Mix From Freezer .....................................................................10
3.7 Cleaning the Freezer .................................................................................10
3.8 Disassembly of Freezer Parts....................................................................10
3.9 Cleaning the Freezer Parts ........................................................................11
3.10 Sanitize Freezer and Freezer Parts ...........................................................11
3.11 Assembly of Freezer ..................................................................................11
3.12 RoutineCleaning .......................................................................................12
3.13 PreventativeMaintenance..........................................................................12
3.14 Extended Storage ......................................................................................15
4 Troubleshooting
4.1 Light Indicators ..........................................................................................17
4.2 Troubleshooting .........................................................................................17
5 Replacement Parts
5.1 Decals and Lubrication ..............................................................................19
5.2 Auger Shaft and Faceplate Parts ...............................................................20
5.3 Hopper Parts..............................................................................................22
5.4 Autofill Options...........................................................................................23
TABLE OF
CONTENTS

1
SECTION 1
DESCRIPTION AND SPECIFICATIONS
1.1 DESCRIPTION
TheStoelting E112/F112counterfreezersaregravityfed.
Thefreezersareequippedwithfullyautomaticcontrolsto
provide a uniform product. They will operate with almost
anytype ofshakeor frozenbeverage mix.This manual is
designed to help qualified service personnel and opera-
torswiththeinstallation,operationandmaintenanceofthe
Stoelting E112/F112 gravity freezers.
Figure 1-1 Model F112
Figure 1-1 Model E112

2
Figure 1-2 Freezer Specifications
E112
F112
1.2 SPECIFICATIONS

3
1.2 SPECIFICATIONS - CONTINUED
Dimensions Freezer with crate Freezer with crate
width 15-1/4'' (38,7 cm) 17-1/2'' (44,5 cm) 17-1/4'' (43,7 cm) 29'' (73,7 cm)
height 30-1/2'' (77,5 cm) 35'' (88,9 cm) 33'' (83,7 cm) 44'' (111,7 cm)
depth 32'' (81,2 cm) 36-1/2'' (92,7 cm) 30-1/4'' (76,7 cm) 39'' (99,0 cm)
Weight 205 lbs (92,1 kg) 215 lbs (97,5 kg) 288 lbs (130,5 kg) 315 lbs (142,9 kg)
Electrical
running amps
connectiontype
Compressor
Drive Motor
Air Flow
Plumbing Fittings
Hopper Volume
Freezing Cylinder
Volume
Production
Capacity 12 GPH (45,42 liters) 18 GPH (68,15 liters)
6,000 Btu/hr 8,600 Btu/hr
1/3 hp 3/4 hp
Air cooled units require 3" (7,6 cm) air
space onbothsides or 4"
(10,2 cm) air space inback
for side-by-side installation
Air cooled units require 6" (15,24 cm)
air space onbothsides
1.25 gallon(5 quart), 4,73 liters 2.125 gallon(8.5 quart),8,04 liters
3.625 gallon(13,73 liters) 5.375 gallon(20,35 liters)
approximately16A approximately10A
N/A Water cooled units require 3/8" N.P.T.
water and drainfittings.
NEMA5-20P power cord provided NEMA6-20P power cord provided
Model E112 Model F112
1 Phase, 115 VAC, 60Hz 1 Phase, 208-230 VAC, 60Hz

4

5
SECTION 2
INSTALLATION INSTRUCTIONS
2.1 SAFETY PRECAUTIONS
Do not attempt to operate the freezer until the safety
precautions and operating instructions in this manual are
read completely and are thoroughly understood.
Takenoticeofallwarninglabelsonthefreezer.Thelabels
have been put there to help maintain a safe working
environment.Thelabelshavebeendesignedtowithstand
washing and cleaning. All labels must remain legible for
the life of the freezer. Labels should be checked periodi-
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
Thefreezerhasbeenassembled,operatedandinspected
at the factory. Upon arrival at the final destination, the
entirefreezermustbecheckedforanydamagewhichmay
have occurred during transit.
With the method of packaging used, the freezer should
arriveinexcellentcondition.THECARRIERISRESPON-
SIBLE FOR ALL DAMAGE IN TRANSIT, WHETHER
VISIBLEORCONCEALED.Donotpaythefreightbilluntil
the freezer has been checked for damage. Have the
carrier note any visible damage on the freight bill. If
concealeddamageand/orshortage isfound later,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 FREEZER INSTALLATION
Installation of the freezer involves moving the freezer
close to its permanent location, removing all crating,
setting in place, assembling parts, and cleaning.
A. Uncrate the freezer.
B. Accuratelevelingisnecessaryforcorrectdrainage
of freezer barrel and to insure correct overrun.
Placea bubblelevel ontopof thefreezer ateach
corner to check for level condition. If adjustment
is necessary, level the freezer by turning the
bottom part of each leg in or out.
C. TheF112hasabasegasketthatmustbeinstalled.
Separatethegasketandinstallitwiththeseamto
theback.Makesuretheangledsideofthegasket
is facing up.
D. Correctventilationisrequired.TheE112requires
3”clearanceonbothsides.Ifthefreezerisplaced
side-by-sidenexttootherequipment,thereneeds
to be at lease 4” clearance at the back of the
freezer.Theair-cooledF112requires6”clearance
on both sides for proper air flow.
D. Connectthedriptraybracketbylooseningthetwo
screws at the front of the freezer. Install the
bracket so that it rests on the nylon washer
between the two metal washers. Tighten the
screws.
E. The freezer leaves the factory with the control
board set for slush. Contact a service technician
to properly set the freezer for shake.
Figure 2-2 Space and Ventilation Requirements
CAUTION
Failuretoprovide adequateventilationwill voidwar-
ranty.
Figure 2-3 Drip Tray Bracket

6
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.
F. Place the CLEAN-ON-OFF switch in the OFF
position.
E. Connect the power cord to the proper power
supply.Theplug on theE112isdesigned for115
volt / 20 amp duty and the plug on the F112 is
designedfor208or230volt/20ampduty.Check
the nameplate on your freezer for proper supply.
Theunitmustbeconnectedtoaproperlygrounded
receptacle. The electrical cord furnished as part
of the freezer has a three prong grounding type
plug. The use of an extension cord is not
recommended, if necessary use one with a size
12gaugeorheavierwithgroundwire.Donotuse
anadaptertogetaroundgroundingrequirement.

7
SECTION 3
INITIAL SET-UP AND OPERATION
3.1 OPERATOR’S SAFETY PRECAUTIONS
SAFE OPERATION IS NO ACCIDENT; observe these
rules:
A. Know the freezer. Read and understand the
OperatingInstructions.
B. Notice all warning labels on the freezer.
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
freezer until the main electrical power has been
disconnected.
G. Donotoperateunderunsafeoperatingconditions.
Neveroperatethefreezerifunusualorexcessive
noise or vibration occurs.
3.2 OPERATING CONTROLS AND INDICATORS
Beforeoperatingthefreezer,itisrequiredthattheoperator
know the function of each operating control. Refer to
Figure3-1forthelocationoftheoperatingcontrols on the
freezer.
A. Spigot Switch
Thespigotswitchwillautomaticallystarttheauger
driveandrefrigerationsystemswhenthespigotis
opened to dispense product. When the spigot is
closed,thedrivemotorandcompressorwillremain
onuntiltheproductinthefreezingcylinderreaches
the proper consistency..
WARNING
High voltage will shock, burn or cause death. The
OFF-ONswitch mustbe placedin theOFF position
prior to disassembling for cleaning or servicing. Do
not operate machine with cabinet panels removed.
Figure 3-1 Freezer Controls
Consistency
Adjustment
Knob
Diagnostic
Light
Add Mix
Indicator
Clean/Off/On
Switch

8
B. CLEAN-OFF-ON Switch
The CLEAN-OFF-ON switch is used to supply
powerto the control circuit. Whenthe switchis in
the OFF (middle) position, power will not be
supplied to the control board or refrigeration
system.WhentheswitchisintheONposition,the
freezer will operate in the freezing mode. When
theswitchisintheCLEANposition,allrefrigeration
will stop and the auger will start rotating.
C. ADD MIX Light
The ADD MIX light will flash to alert the operator
toalowmixcondition.Itdoessobymonitoringthe
mix level in the hopper. When the ADD MIX light
is flashing, refill hopper immediately.
NOTE
Failure to refill hopper immediately may result in
operationalproblems.
D. Diagnostic Light
The Diagnostic Light will flash if an error occurs.
The light will flash once if there is a compressor
error.Therewillbetwoquickflashesifthereisan
auger error. And there will be three quick flashes
ifthefreezerisleftincleanmodeformorethan20
minutes. Refer to the troubleshooting section for
details.
E. Consistency Adjustment Knob
The Consistency Adjustment Knob increases or
decreasesproductconsistency. Atensionspring
isconnectedtotheknobandchangestheamount
oftorqueneededtocompletearefrigerationcycle.
Turn the knob clockwise to increase consistency
or counterclockwise to decrease consistency.
NOTE
An additional spring is included with the freezer
behindthe header panel.The additional spring can
beinstalledfor usewithshake mixeswhen ahigher
consistency is required. Do not use the optional
spring with slush mixes.
F. Front Door Safety Switch
The front door safety switch prevents the auger
fromturningwhenthefrontdoorisremoved. The
switch is open when the door is not in place and
closed when the door is properly installed.
G. Autofill Kit - Optional (E112 Part 2183807,
F112 Part 2187101)
The autofill kit is used with a pump to keep the
hopper filled. The autofill kit is for use with non-
potentiallyhazardousfoodsubstances;non-dairy.
Refer to Section 5-4 for Autofill options.
H. Light Kit - Optional (E112 Part 2183800, F112
Part 2187102)
The light kit is installed behind the header panel
and illuminates a translucent header panel.
I. BottleRackKit-Optional (E112Part2187100,
F112 Part 2187040 or 2187024)
The bottle rack kit is installed onto the header
panelandholds7flavorbottles(13bottlesonthe
2187024).
J. Spinner Kit - Optional (E112 Part 2187103,
F112 Part 2187031)
The spinner kit is installed on the front of the
freezer and offers blended frozen beverages.
3.3 SANITIZING
Sanitizing must be done after the freezer is cleaned and
justbeforethehopperisfilledwithmix.Sanitizingthenight
beforeisnoteffective.However,youshouldalwaysclean
the freezer and parts after each use.
The United States Department of Agriculture and
the Food and Drug Administration require that all
cleaningandsanitizingsolutions usedwithfoodpro-
cessing equipment be certified for this use.
Whensanitizingthefreezer,refertolocalsanitaryregula-
tions for applicable codes and recommended sanitizing
products and procedures. The frequency of sanitizing
must comply with local health regulations.
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. Ifusing ashake mix,place the mixinlet regulator
into hopper. If using a slush mix, the mix inlet
regulator is not required.
CAUTION
Donotallow sanitizer toremainincontactwithstain-
less steel freezer parts for prolonged periods. Pro-
longed contact of sanitizer with freezer may cause
corrosion of stainless steel parts.

9
C. PlacetheswitchintheCLEANposition.Checkfor
leaks.
D. Clean sides of hopper, mix inlet regulator and
underside of hopper cover using a soft bristle
brush dipped in the sanitizing solution (Refer to
Figure 3-2).
E. Afterfiveminutes,placeabucketunderthespigot
andopenspigottodrainsanitizingsolution.Place
the switch in the OFF (middle) position. Loosen
freezer door and allow the freezing cylinder to
drain completely. Re-tighten door.
3.4 FREEZE DOWN AND OPERATION
This section covers the recommended operating proce-
dures for the safe operation of the freezer.
A. Sanitize just prior to use.
B. Place the switch in the OFF (middle) position.
NOTE
Make sure the mix inlet regulator is in place before
addingshake mixes.Thisis notnecessary for slush
mixes.
C. Pourapproximately1/2gallonoffullythawedmix
into the hopper. Open spigot and drain a small
amountofmixtoremoveanyremainingsanitizer.
D. Fillthe hopperwith pre-chilled(40°F or4°C) mix.
NOTE
Do not overfill the hopper. Mix level must not be
higherthan theair inlettube onthe mixinlet regula-
tor.
E. Place the switch in the ON position.
NOTE
After the drive motor starts, there is a 3 second de-
lay before the compressor starts.
F. After 8 to 12 minutes the product will be at
consistency and will be ready to serve. Freeze
down time may vary depending on mix type and
ambient temperatures.
G. Todispense,pullthespigothandledowntoopen
the spigot.
H. Thefreezerisdesignedtodispensetheproductat
areasonabledrawrate.Ifthefreezerisoverdrawn,
theresultisasoftproductoraproductthatwillnot
dispense at all. If this should occur, allow the
freezertorunforapproximately30secondsbefore
dispensing additional product.
I. Do not operate the freezer when the ADD MIX
light is on. Refill the hopper immediately.
3.5 MIX INFORMATION
Mix can vary considerably from one manufacturer to
another. Differences in the amount of butterfat content
andquantityandqualityofotheringredientshaveadirect
bearingonthefinishedfrozenproduct.Achangeinfreezer
performance that cannot be explained by a technical
problem may be related to the mix.
Proper product serving temperature varies from one
manufacturer’smixtoanother.Shakeandstackableslush
mixesprovidesatisfactoryproductfrom24°to28°F(-4°to
-2°C).
When checking the temperature, stir the thermometer in
the frozen product to obtain an accurate reading.
Old mix or mix that has been stored at elevated tempera-
tureswillproducepoor-qualityproductwithabadtasteand
unacceptable appearance. To retard bacteria growth in
dairybasedmixes,thebeststoragetemperaturerangeis
between 33° to 38°F (0.5° to 3.3°C).
Someshakemixestendtofoammorethanothers.Iffoam
appearsinthehopper,skimoffwithasanitizedutensiland
discard. Periodically, stir the mix in the hopper with a
sanitized utensil to help prevent excess foam.
Figure 3-3 Mix Inlet Regulator
Figure 3-2 Sanitizing hopper

10
3.6 REMOVING MIX FROM FREEZER
To remove the mix from the freezer, refer to the following
steps:
A. Ifremoving shakemix, pullthemixinletregulator
straight up and remove it from the hopper.
B. Place the switch in the CLEAN position to rotate
the auger. Allow the mix to agitate in freezing
cylinder until the mix has become liquid, about 5
minutes.
C. Drain the liquid mix by opening the spigot. A
container should be placed under the spigot to
collect the liquid mix.
D. Place the switch in the OFF (middle) position.
3.7 CLEANING THE FREEZER
NOTE
The frequency of cleaning the freezer and freezer
parts must comply with local health regulations.
After the mix has been removed from the freezer, the
freezermustbecleaned.Tocleanthefreezer,refertothe
following steps:
A. Closethespigotand fillthehopperwith 2gallons
(8 liters) of tap water.
B. Place the switch in the CLEAN position. The
auger will start to rotate.
C. Allow the water to agitate for approximately 30
seconds.
D. Openthespigottodrainthewater.Remember to
place a container under the spigot to catch the
water. When the water has drained, place the
switch in the OFF (middle) position. Allow the
freezing cylinder to drain completely.
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 FREEZER PARTS
Inspectionfor worn orbroken parts shouldbe made each
timethefreezerisdisassembled.Allwornorbrokenparts
should be replaced to ensure safety to both the operator
and the customer and to maintain good freezer perfor-
manceandaqualityproduct.Frequencyofcleaningmust
comply with the local health regulations.
To disassemble the freezer, refer to the following steps:
A. Remove hopper cover. Remove the mix inlet
regulator from the hopper.
B. Pull out the spigot pin by its ring (Refer to Figure
3-4).
C. Remove the spigot handle.
D. Remove front door by turning the circular knobs
and then pulling door off the studs.
NOTE
When removing front door, entire door and stator
assembly will come out as well.
E. Remove torque rod from stator assembly.
F. Remove quad ring from groove in front door.
G. Remove stator bar. Remove o-ring and white
bushing from stator bar.
H. Remove auger support bushing.
I. Turnthespigotbody untiltheicebreaker bar can
beremoved.Removebreakerbar(RefertoFigure
3-5).
CAUTION
Hazardous Moving Parts.
Revolving auger shaft can grab and cause injury.
Place the switch in the OFF (middle) position be-
fore disassembling for cleaning or servicing. Figure 3-5 Spigot and Ice Breaker Bar Removal
Figure 3-4 Remove Spigot Pin

11
J. Remove spigot body from the front door.
K. Removeo-rings(2)fromthespigotbyfirstwiping
off the lubricant using a clean paper towel. Then
squeezetheo-ringupwardwithadrycloth.When
a loop is formed, roll the o-ring out of the groove
(Refer to Figure 3-6).
L. Removeaugerassemblyfromthefreezingcylinder
and remove auger blades.
M. Remove rear seal and o-ring from auger.
N. Remove drain tray, drip tray and drip tray grid.
3.9 CLEANING THE FREEZER PARTS
Place all loose parts in a pan or container and take to the
washsinkforcleaning.Tocleanfreezerparts,refertothe
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. Place all parts
in detergent solution and clean with provided
brushes. Rinse all parts with clean 90° to 110°F
(32° to 43°C) water.
B. Wash the hopper and freezing cylinder with the
90° to 110°F (32° to 43°C) detergent water and
brushes provided (Refer to Figure 3-7).
C. Cleantherearsealsurfacesfromtheinsideofthe
freezing cylinder with the 90° to 110°F (32° to
43°C) detergent water.
3.10 SANITIZE FREEZER AND FREEZER
PARTS
A. UseStera-Sheenorequivalentsanitizingsolution
mixedaccordingtomanufacturer'sinstructionsto
provide 100 parts per million strength solution.
Mixsanitizerinquantitiesofnolessthan2gallons
(7.5liters)of90°to110°F(32°to43°C)water.Any
sanitizer must be used only in accordance with
the manufacturer's instructions.
B. Withthelargebrushprovided,sanitizetherearof
the freezing cylinder by dipping the brush in the
sanitizing solution and brushing the rear of the
cylinder.
3.11 ASSEMBLY OF FREEZER
Toassemblethefreezerparts,refertothefollowingsteps:
NOTE
Petrol Gel sanitary lubricant or equivalent must be
used when lubrication of parts is specified.
NOTE
The United States Department of Agriculture and
the Food and Drug Administration require that lu-
bricantsused onfoodprocessingequipment becer-
tifiedfor thisuse. Uselubricantsonlyin accordance
with the manufacturer’s instructions.
A. Assemble all o-rings onto parts dry, without
lubrication. Then apply a thin film of sanitary
lubrication to exposed surfaces of the o-rings.
Also apply a thin film of sanitary lubricant inside
andoutsideoffrontaugersupportbushing,andto
the inside and outside of stator support bushing.
B. Assemble the rear seal onto the auger with the
largeendtotherear.Besuretheo-ringisinplace
before installing the rear seal (Refer to Figure 3-
8).
C. Putasmall amountofwhiteHex DriveAntiSeize
(spline lube) on the hex end of the auger shaft. A
small container of Anti Seize is shipped with the
freezer.
D. Install the plastic auger blade onto auger.
Figure 3-7 Cleaning Freezing Cylinder
Figure 3-6 Removing O-Ring
CAUTION
Donotallow sanitizer toremainincontactwithstain-
less steel freezer parts for prolonged periods. Pro-
longed contact of sanitizer with freezer may cause
corrosion of stainless steel parts.

12
E. Pushaugerintofreezingcylinderandrotateslowly
until auger engages the drive shaft.
F. Insert spigot body into front door.
NOTE
Wheninserting spigot body,press o-rings in topre-
vent damage.
G. Turn spigot body until the ice breaker bar can be
inserted. Insert breaker bar and rotate spigot
body 90°.
H. Install auger support bushing onto front door so
beveled edge of bushing is against door.
I. Install the white stator support bushing onto the
rearof thestator barand insertstator intospigot.
J. Inserttorquerod.Therodshouldbeplacedthrough
the hole in stator bar.
K. Install the front door onto the freezer.
NOTE
When installing door onto freezer, torque rod must
beplaced inthecenter ofmetaltorque actuatorarm
L. Install the knobs on the freezer studs.
M. Look for the proper seal between the freezing
cylinder, quad ring, and front door
N. Insert spigot handle so hole lines up and insert
spigot pin.
O. Install the mix inlet regulator into the hopper if
using shake mix. If using slush mix, the mix inlet
regulator is not required.
P. Installhoppercover,draintray,driptray,anddrip
tray grid.
3.12 ROUTINE CLEANING
To remove spilled or dried mix from the freezer exterior,
wash in the direction of the finish with warm soapy water
andwipedry.Donotusehighlyabrasivematerialsasthey
will mar the finish.
3.13 PREVENTIVE MAINTENANCE
Stoelting recommends that a maintenance schedule be
followedtokeepthefreezercleanandoperatingproperly.
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.
figure 3-9 Door and Stator Assembly
Torque
Rod
Auger
Support
Bushing
Stator Bar
O-Ring
Stator Bar
Bushing
Quad
Ring
Stator Bar
CAUTION
Do not place the mix inlet regulator into the hopper
before installing the auger.Attempting to install the
auger with the mix inlet regulator in place will dam-
age the regulator.

13
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
difficulttoremoveandhelpattributetomilkstonebuild-up.
MILKSTONE – Is a white/gray film that forms on equip-
mentandutensilsthatcomeincontactwithdairyproducts.
Thesefilmswillaccumulateslowlyonsurfacesbecauseof
ineffectivecleaning,use ofhardwater,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
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 ONLYWAYTO
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– Thisinvolvesdraining mix fromthe
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
solution soak in the machine for an extended
periodoftime.Individualpartsarealsosoakedin
adelimingsolutionforanextendedperiodoftime
(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.

14
WithproperdailyuseofSTERA-SHEENoritsequivalent,
there is no need for the use of a DELIMER.
DO NOT USE BLEACH
• BLEACH HAS ABSOLUTELY NO CLEANING
PROPERTIES.
• BLEACHISCORROSIVE.Itcanandwilldamage
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 asmallportion andsubmerge itintothe 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
B. DAILY
1. The exterior should be kept clean at all times to
preserve the luster of the stainless steel. A mild
alkalinecleanerisrecommended.Useasoftcloth
or sponge to apply the cleaner.
C. WEEKLY
1. Check o-rings and rear seal for excessive wear
and replace if necessary.
2. Remove the drip tray by gently lifting up to
disengagefromthesupportandpullingout.Clean
behindthedriptrayandfrontof the freezerwith a
soap solution.
D. QUARTERLY
Air Cooled
Theair-cooledcondenserisacopper tube andaluminum
fin type. Condensing is totally dependent upon airflow. A
pluggedcondenserfilter,condenser, or restrictionsinthe
louvered panel will restrict airflow. This will lower the
capacity of the system and damage the compressor.
Thecondensermustbekeptcleanofdirtandgrease.The
F112 must have a minimum of 6” (15.2 cm) of ventilation
ontherightandleftsidesoftheunitforfreeflowofair.The
E112 must have 3” (7.6 cm) of ventilation. Make sure the
freezer is not pulling over 100° F (37° C) air from other
equipment in the area.
Thecondenserandcondenserfilterrequireperiodicclean-
ing. To clean, refer to the following procedures.
E112 Air Cooled Condenser Cleaning
A. Unscrewtheknoblocatedontheundersideofthe
freezer towards the front (Fig. 3-10).
B. Remove the filter bracket and remove the filter.
C. Visually inspect the condenser filter for dirt.
D. If the filter is dirty, vacuum or brush clean, rinse
withcleanwaterandallowtodrybeforereplacing
on the freezer. NOTE
If the condenser is not kept clean, refrigeration effi-
ciency will be lost.
Figure 3-10 E112 Condenser Filter Removal