Page 1
Model O112
OPERATORS MANUAL
Manual No. 513602 Rev.1
Page 2
Page 3
This manual provides basic information about the machine. Instructions and suggestions are
given covering its operation and care.
The illustrations and specifi cations 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 provide new parts for machines built prior to date of change.
DO NOT ATTEMPT 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.
stoeltingfoodservice.com
Stoelting Foodservice Equipment
502 Highway 67
Kiel, WI 53042-1600
U.S.A.
Main Tel: 800.558.5807
Fax: 920.894.7029
Customer Service: 888.429.5920
Fax: 800.545.0662
Email: foodservice@stoelting.com
© 2014 PW Stoelting, LLC
Page 4
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
specifi c safety information, the following safety defi ni-
tions are provided to assist the reader.
The purpose of safety symbols is to attract your attention 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.
Safety Alert Symbol:
This symbol Indicates danger, warning or caution.
Attention is required in order to avoid serious personal 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.
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” indicates a potentially
hazardous situation, which, if not avoided, may result
in minor or moderate 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 equipment/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.
Page 5
TABLE OF CONTENTS
SECTION DESCRIPTION PAGE
1. INTRODUCTION
1.1 Description............................................................................................................. 1
1.2 Specifications ........................................................................................................ 1
2. INSTALLATION INSTRUCTIONS
2.1 Safety Precautions ................................................................................................. 3
2.2 Shipment and Transit.............................................................................................. 4
2.3 Freezer Installation ................................................................................................. 4
2.4 Installing Permanent Wiring .................................................................................... 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 ....................................................................................................... 10
3.6 Removing Mix From Freezer .................................................................................. 10
3.7 Cleaning The Freezer............................................................................................. 11
3.8 Disassembly of Freezer Parts ................................................................................ 11
3.9 Cleaning The Freezer Parts.................................................................................... 12
3.10 Sanitize Freezer and Freezer Parts....................................................................... 12
3.11 Assembly of Freezer ............................................................................................. 12
3.12 Routine Cleaning................................................................................................... 13
3.13 Preventive Maintenance ........................................................................................ 15
3.14 Extended Storage ................................................................................................. 16
4. TROUBLESHOOTING CHARTS................................................................................ 17
5. REFERENCE DRAWINGS ......................................................................................... 21
5.1 Front Door Drawing ............................................................................................... 21
5.2 Auger Drawing ...................................................................................................... 22
6. WARRANTY INFORMATION...................................................................................... 23
Page 6
LIST OF ILLUSTRATIONS
FIGURE TITLE PAGE
1 Model Optima 112 Freezer .................................................................................... 1
2 Specifications ........................................................................................................ 1
3 Warning Label Locations ....................................................................................... 3
4 Leveling ................................................................................................................. 4
5 Space and Ventilation Requirements ..................................................................... 4
6 Electrical Plug ....................................................................................................... 5
7 Installing Tray and Cover ........................................................................................ 5
8 Power Cord Connection ......................................................................................... 5
9 Controls ................................................................................................................. 7
10 Mix Inlet Regulator ................................................................................................. 9
11 Clean Control ......................................................................................................... 9
12 Sanitizing Hopper .................................................................................................. 9
13 Draining Solution ................................................................................................... 9
14 Dispensing Product ...............................................................................................10
15 Removing Mix Inlet Regulator.................................................................................10
16 Draining Mix ..........................................................................................................11
17 Removing Front Door .............................................................................................11
18 Auger Shaft Removal .............................................................................................12
19 Removing O-ring ....................................................................................................12
20 Cleaning Freezer Barrel .........................................................................................12
21 Exploded View of Auger.........................................................................................13
22 Mix Inlet Regulator .................................................................................................13
Page 7
A Few Words About Safety
Safety Information
Read and understand the entire manual before
operating or maintaining Stoelting equipment.
This Owner's 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.
T o highlight specific safety information, the following
safety definitions are provided to assist the reader .
The purpose of safety symbols is to attract your
attention 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 .
Safety Alert Symbol:
This symbol Indicates danger, warning or caution.
Attention is required in order to avoid serious personal
injury . The message that follows the symbol cont ains
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.
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” indicates a potentially
hazardous situation, which, if not avoided, may result
in minor or moderate 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 equipment/
property damage.
NOTICE
The signal word “NOTICE” indicates information or
procedures that relate directly or indirectly to the
safety or personnel or equipment/property.
Page 8
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SECTION 1
DESCRIPTION AND SPECIFICATIONS
1.1 DESCRIPTION
The Stoelting Optima 1 12 countertop model freezer is gravity fed. The freezer is equipped with fully automatic controls to provide a uniform product. The freezer is designed
to operate with almost any type of commercial shake mix
available. This manual is designed to assist qualified service personnel and operators in the installation, operation
and maintenance of the S toelting Model Optima 112 freezer .
Figure 1. Model Optima 112 Freezer
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MODEL OPTIMA 1 12
COUNTERTOP MODEL
GRA VITY SHAKE FREEZER
DIMENSIONS:
Freezer: 17.88" (45.42cm) wide x 30.25" (76.80cm) deep x 37.31" (94.80cm) high
Crated: 28.75" (73cm) wide x 38.75" (98.4cm) deep x 43" (109.2cm) high
WEIGHT:
Freezer: 290 lbs. (131.5kg) Cra ted: 360 lbs. (163.3kg)
ELECTRICAL:
Description Optima 1 12-38
Voltage AC 1 PH 208/230
Total Run Amp s 10.5
Drive Motor 3/4 HP
Compressor 12,000 BTUH (90°F - 0°F)
Use 20 amp HACR circuit breaker .
Automatic safeguard circuit built into electronic control - protects major
freezer components under abnormal operating conditions.
COOLING:
Air cooled requires minimum 3" (7.6cm) air clearance on front and back.
No clearance needed on sides.
HOPPER:
28 Quart refrigerated and insulated.
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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.
Take notice of all warning labels on the freezer. The labels
have been put there to help maintain a safe working
environment. The labels have been designed to withstand
washing and cleaning. All labels must remain legible for
the life of the freezer. Labels should be checked periodically to be sure they can be recognized as warning labels.
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, LLC
ATTENTION: Customer Service
502 Hwy. 67
Kiel, Wisconsin 53042
Figure 2. Warning Label Locations
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2.2 SHIPMENT AND TRANSIT
The freezer has been assembled, operated and inspected
at the factory. Upon arrival at the final destination, the
complete freezer must be checked for any damage which
may have occurred during transit.
Installation of the freezer involves moving the freezer close
to its permanent location, removing all crating, setting in
place, assembling parts, and cleaning.
With the method of packaging used, the freezer should
arrive in excellent condition. THE CARRIER IS RESPONSIBLE FOR ALL DAMAGE IN TRANSIT, WHETHER
VISIBLE OR CONCEALED. Do not pay the freight bill until
the freezer has been checked for damage. Have the carrier
note any visible damage on the freight bill. If concealed
damage and/or shortage is found later, advise the carrier
within 10 days and request inspection. The customer must
place claim for damages and/or shortages in shipment
with the carrier. Stoelting, LLC. cannot make any
claims against the carrier.
2.3 FREEZER INSTALLATION
WARNING
Installation must be performed by a qualified electrician/refrigeration specialist. Incorrect installation may
cause personal injury , severe damage to the machine
and will void factory warranties.
A. Uncrate the freezer.
B. Accurate leveling is necessary for correct drainage of
freezer barrel and to insure correct overrun. Place a
spirit level on top of the freezer at each corner to
check for level condition. If adjustment is necessary,
level the freezer by turning the bottom part of each leg
in or out. Then separate freezer base gasket and
install with seam to the back and angle to the top.
Figure 3. Space and Ventilation Requirements
WARNING
Lifting hazard
Do not attempt to lift freezer manually . Use proper lift ing equipment such as a forklift, lift table, or pallet
jack, with lifting device positioned beneath the freezer’s
base. Ensure that personnel remain clear of suspended
load. Failure to do so may result in personal injury
and/or damage to the freezer that will void any factory
warranties.
CAUTION
Risk of product damage
Air cooled condenser requires proper ventilation. Failure to provide adequate ventilation will void factory
warranties.
C. The freezer is equipped with an air cooled condenser
and requires correct ventilation. The front of the
freezer is the air intake and the back discharge. Both
front and back must have a minimum of 3" of
clearance. (6" in high ambient temperature conditions)
(Fig. 3).
D. Place the OFF-ON switch in the OFF position.
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W ARNING
Do not alter or deform electrical plug in any way.
Altering the plug to fit into an outlet of different configuration may cause fire, risk of electrical shock, product
damage and will void the warranty.
E. Connect the power cord. The plug is designed for 208
or 230 volt/20 amp duty. Check the nameplate on your
freezer for proper supply. The unit must be connected
to a properly grounded receptacle. The electrical cord
furnished as part of the freezer has a three prong
grounding type plug (Fig. 4). The use of an extension
cord is not recommended, if necessary use one with
a size 12 gauge or heavier with ground wire. Do not use
an adapter to get around grounding requirement.
2.4 INSTALLING PERMANENT WIRING
If permanent wiring is required by local codes, the following
procedure must be performed.
WARNING
Hazardous voltage
High voltage will shock, burn or cause death. Turn off
and lock out main power disconnect before installing
wiring. Do not operate machine with cabinet panels
removed.
Figure 4. Electrical Plug
F. Install the drip tray, drain tray, hopper cover and other
miscellaneous parts on the freezer.
Figure 5. Power Cord Connection
A. Refer to the nameplate at the rear of the freezer for
specific electrical requirements. Make sure the power
source in the building matches the freezer nameplate
requirements. Remove the left side panel and electri
cal box cover.
B. Disconnect the wires from the terminal
block. Disconnect the green ground wire from the
grounding stud. (Fig. 5).
C. Remove the power cord.
D. Install permanent wiring according to local code.
E. Replace the electrical box cover and left side panel.
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SECTION 3
INITIAL SETUP AND OPERATION
3.1 OPERATOR'S SAFETY PRECAUTIONS
SAFE OPERA TION IS NO ACCIDENT; Observe these
rules:
A. Know the freezer . Read and understand the
Operating Instructions.
B. Notice all warning labels on the freezer.
C. Wear proper clothing. Avoid loose fitting gar-
ments, and remove watches, rings or jewelry which
could cause a serious accident.
D. Maintain a clean work area. Avoid accidents by
cleaning up the area and keeping it clean.
E. Stay alert at all times. Know which switch, push
button or control you are about to use and what
effect it is going to have.
F. Disconnect electrical cord for maintenance.
Never attempt to repair or perform maintenance on
the freezer until the main electrical power has been
disconnected.
High Pressure Cutout Switch Located Back of Freezer (Some Models)
G. Do not operate under unsafe operating condi-
tions. Never operate the freezer if unusual or exces-
sive noise or vibration occurs.
3.2 OPERATING CONTROLS AND INDICATORS
Before operating the freezer, it is required that the
operator know the function of each operating control.
Refer to Figure 6 for the location of the operating
controls on the freezer. For the information regarding
flashing indicator lights, refer to the troubleshooting
section.
WARNING
Hazardous voltage
The OFF-ON switch must be placed in the OFF
position when disassembling for cleaning or servicing.
The freezer must be disconnected from electrical
supply before removing any access panel. Failure to
disconnect power before servicing could result in death
or serious injury.
OFF-ON
POWER SWITCH
PUSH TO FREEZE
CLEAN
MIX LOW
ÎÎ
Î
ÎÎ
ÎÎ
Î
ÎÎ
ÎÎ
Î
ÎÎ
ÔÔ
Ô
ÔÔ
DISPENSE RATE
ADJUSTMENT
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Ð
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Figure 6. Controls
7
HOLD READY
SWITCH
ÓÓ
Ó
ÓÓ
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CONSISTENCY/TEMPERATURE
ADJUSTMENT
Page 16
A. SPIGOT SWITCH
The SPIGOT switch will automatically actuate the
auger drive and refrigeration systems when the spigot
is opened to dispense product. When the spigot is
closed, the drive motor and compressor will remain
"on" until the product in the barrel reaches the proper
temperature.
B. OFF-ON SWITCH
The OFF-ON switch is a two position toggle switch
used to supply power to the control circuit. When the
switch is in the OFF position, nothing will run. When
the switch is in the ON position the freezer will be in
the idle mode until a switch is activated.
C. PUSH TO FREEZE SWITCH
The PUSH TO FREEZE switch is a "snap" switch used
to start the freezing cycle. During initial freeze down,
the OFF-ON switch is placed in the ON position. Then
the PUSH TO FREEZE switch is pressed until the
drive motor and compressor come "ON".
NOTICE
After the gearmotor starts, there is a 3 second delay before the compressor starts.
During the normal operation, the red PUSH TO FREEZE
switch light will illuminate after the freezer has been
idle for the preset cycles. Before drawing product,
press the PUSH TO FREEZE switch if it is illuminated.
Wait until the green light is illuminated before dispens-
ing.
NOTICE
If the freezer shuts off and the PUSH TO FREEZE
light flashes, you have an error condition. Turn the
OFF-ON switch to the OFF position, correct the
problem and turn the freezer back on. (See Troubleshooting.)
D. GREEN LIGHT
The green light is used to indicate that the product has
reached the proper temperature and is ready to be
dispensed.
F. DRIVE MOTOR OVERLOAD
The internal DRIVE MOTOR OVERLOAD will trip if the
drive motor is overloaded. It will reset after approximately 10-12 minutes. If the drive motor continues to
trip, refer to Troubleshooting (Sec. 4).
G. RED MIX LOW LIGHT
The red MIX LOW light is designed to alert the operator
to a low mix condition. The light will illuminate with
approximately one gallon of mix in the hopper. When
the MIX LOW light is illuminated, refill hopper immediately.
NOTICE
Failure to refill hopper immediately may result in
operational problems.
H. HOLD READY SWITCH
The HOLD READY switch is a push button switch.
When pushed in and held for 5 seconds, the hold ready
mode will be activated. The product will remain ready
to serve and the freezer will not go to idle. To return to
normal operation push and hold for 5 seconds.
I. DISPENSE RATE ADJUSTER
The dispense rate adjuster limits the opening of the
spigot. To adjust product dispense rate, turn the
adjusting knob clockwise for slower flow and counterclockwise for faster flow.
3.3 SANITIZING
Sanitizing must be done after the freezer is cleaned and
just before the hopper is filled with mix. Sanitizing the
night before is not effective. However, you should
always clean the freezer and parts after using it.
WARNING
The United States Department of Agriculture and
the Food and Drug Administration require that
all cleaning and sanitizing solutions used with
food processing equipment be certified for this
use.
NOTICE
If the PUSH TO FREEZE red light is illuminated,
push the PUSH TO FREEZE switch and wait until
the green light illuminates before dispensing.
E. CLEAN SWITCH
The CLEAN switch is a "snap" switch. When the
switch is pushed the refrigeration system will be OFF
and the auger will rotate for cleaning. When the switch
is pushed again, the auger will stop and the CLEAN
light will flash indicating the freezer is in the CLEAN
mode. To exit the CLEAN mode turn the OFF-ON
switch to the OFF position. If the freezer is left in
CLEAN for more than 30 minutes or is pushed three
times in ten seconds, it will go in error. To reset place
the CLEAN-OFF-ON switch in the ON position and
allow the error light to flash a minimum of 10 minutes.
Then turn to off, wait 5 seconds and turn on.
When sanitizing the freezer, refer to local sanitary regulations 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 120°F 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.
NOTICE
Stoelting, LLC has found that STERA-SHEEN
GREEN LABEL SANITIZER AND CLEANER does
an effective job of properly sanitizing and cleaning a
soft serve freezer. We therefore include a sample
with each new freezer. Other products may be as
effective. For further information refer to cleaning and
sanitizing information Section 3.13.
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CAUTION
Avoid prolonged contact of sanitizer with freezer
parts. Prolonged contact of sanitizer with freezer
may cause corrosion of stainless steel parts.
In general, sanitizing may be conducted as follows:
A. Push the mix inlet regulator into hopper with air
inlet (long) tube toward the front of the freezer
(Fig.7).
Figure 9. Sanitizing Hopper
Figure 7. Mix Inlet Regulator
B. Prepare 4 gallons (15 liters) of sanitizing solution
following manufacturer's instructions. Pour into hop-
per with mix inlet regulator in place.
C. Place the OFF-ON toggle switch in the ON position
while pressing the CLEAN switch. Check for leaks.
(Fig. 8.)
Figure 8. Clean Control
D. Clean sides of hopper, mix inlet regulator and under
side of hopper cover using a sanitized soft bristle brush
dipped in the sanitizing solution. (Fig. 9).
E. After five minutes, place a bucket under the spigot and
open spigot to drain sanitizing solution. When solution
has drained, press the CLEAN snap switch to stop the
auger. Allow the freezer barrel to drain completely
(Fig. 10).
Figure 10. Draining Solution
3.4 FREEZE DOWN AND OPERATION
This section covers the recommended operating procedures to be followed for the safe operation of the freezer.
A. Sanitize just prior to use.
B. Place the OFF-ON switch in the OFF position.
C. With spigot open, pour approximately 1 gallon (3.8
liters) of mix into the hopper. Allow the mix to flush out
about 8 ounces (0.23 liters) of sanitizing solution and
liquid mix. Close the spigot.
D. Fill hopper with approximately 5 gallons (19 liters) of
pre-chilled (40°F or 4°C) mix.
NOTICE
Do not overfill the hopper. Mix level must not be higher than
the air inlet tube on the mix inlet regulator.
E. The freezer barrel will automatically fill until it is about
1/2 full. If freezer barrel does not fill, check for obstruction in the mix inlet regulator. If freezer barrel fills over
1/2 full, check for leaks at the mix inlet regulator Oring or check if the mix inlet regulator was installed
correctly or that the freezer is level.
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F. Place the OFF-ON switch in the ON position, then
press the PUSH TO FREEZE switch until the freezer
starts.
NOTICE
After the gearmotor starts, there is a 3 second delay before the compressor starts.
G. After about 7 to 10 minutes the freezer will shut OFF
and the green light will illuminate indicating the product
is ready to serve. Freeze down time may be longer for
some mixes. High ambient temperatures may extend
freeze down time.
H. For normal dispensing, move the spigot handle fully
open. (Fig. 11).
3.5 MIX INFORMATION
Mix can vary considerably from one manufacturer to
another. Differences in the amount of butterfat content and
quantity and quality of other ingredients have a direct
bearing on the finished frozen product. A change in freezer
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. Shake mixes range from
24° to 28°F (-4° to -2°C).
When checking the temperature, stir the thermometer in
the frozen product to read the true temperature.
Mix does not improve with age. Old mix, or mix that has
been stored at too high temperature, can result in a
finished product that is less than satisfactory from the
appearance and taste standpoint. To retard bacteria growth
in dairy based mixes, the best storage temperature range
is between 36° to 40°F (2.2° to 4.4°C).
Some products tend to foam more than others. If excess
foam should occur, skim off with a sanitized utensil and
discard. Periodically, stir the mix in the hopper with a
sanitized utensil.
Figure 11. Dispensing Product
NOTICE
Refrigeration is automatically activated when the spigot is
opened. Close the spigot completely after dispensing.
I. The freezer is designed to dispense the product at a
reasonable draw rate. If the freezer is overdrawn, the
result is a very thin product. If this should occur, allow
the freezer to run for approximately 30 seconds before
dispensing additional product. After a while the opera-
tor will sense or feel when the freezer is beginning to
fall behind, and will slow down on the rate of draw so
as not to exceed the capacity.
J. Do not operate the freezer when the MIX LOW light is
on or with less than 1-3/4 inches (4.4 cm) of mix in the
hopper. Refill the hopper immediately.
Figure 12. Removing Mix Inlet Regulator
(Shown with no mix in hopper)
3.6 REMOVING MIX FROM FREEZER
To remove the mix from the freezer, refer to the following
steps:
A. Remove the mix inlet regulator from the hopper by
pulling straight up (Fig. 12).
B. Place the OFF-ON rocker switch in the ON position
and push the CLEAN switch to rotate the auger. Allow
the mix to agitate in freezer barrel about 5 minutes.
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C. Empty the freezer by opening the spigot and draining
into a bucket. (Fig. 13).
3.8 DISASSEMBLY OF FREEZER PARTS
D. Place the OFF-ON switch in the OFF position.
Figure 13. Draining Mix
WARNING
Moving machinery can grab, mangle and dismember. Place the ON-OFF toggle switch in the
OFF position before disassembling for cleaning
or servicing. Placing the ON-OFF toggle switch
in the ON position during cleaning or servicing
may result in serious personal injury .
Inspection for worn or broken parts should be made at
every disassembly of the freezer for cleaning or other
purposes. All worn or broken parts should be replaced to
ensure safety to both the operator and the customer and
to maintain good freezer performance and a quality product. Two normal wear areas are the auger flights and front
auger support. Frequency of cleaning must comply with
the local health regulations.
To disassemble the freezer, refer to the following steps:
3.7 CLEANING THE FREEZER
NOTICE
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
freezer must be cleaned. To clean the freezer, refer to the
following steps:
A. Close the spigot and fill the hopper with 4 gallons (15
liters) of cold tap water.
B Place the OFF-ON switch in the ON position while
pushing the CLEAN switch to rotate the auger.
C. Allow the water to agitate for approximately 5 minutes.
NOTICE
If freezer is left in CLEAN for more than 30 minutes, it will
go to error.
D. Open the spigot to drain the water. Remember to place
a bucket or container under the spigot to catch the
water. When the water has drained, turn the OFF-ON
switch to the OFF position. Allow the freezer barrel to
drain completely.
E. Repeat Steps A through D using a warm (120°F) mild
detergent (Joy or equivalent) solution.
Figure 14. Removing Front Door
A. Remove hopper cover and drain tray (Fig. 14).
B. Remove the mix inlet regulator from the hopper by
pulling straight up.
C. Remove the front door by turning off the circular knobs
and then pulling the front door off the studs.
D. Remove the spigot body from the front door by pushing
the spigot body through the bottom of the door.
Remove auger support bushing.
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E. Remove the auger assembly from the freezer (Fig.15).
Keep the rear of the auger shaft tipped up once it is
clear of the freezer to avoid dropping rear seal.
Figure 15. Auger Shaft Removal
A. Place all parts in warm (120°F) mild detergent (Joy or
equivalent) water and clean with brushes provided.
Rinse all parts with clean hot (135°F) water. Be careful
not to drop or mishandle front door or freezer parts.
Dropping parts may cause irreparable damage.
F. Remove scraper blades and the rear seal assembly.
G Wipe socket lubricant from the drive end (rear) of the
auger with a cloth or paper towel.
CAUTION
Do not use any type of sharp object to remove
O-rings. Sharp objects may damage spigot bodies.
H. Remove all O-rings from parts by first wiping off the
lubricant using a clean paper towel. Then squeeze the
O-ring upward with a dry cloth (Fig. 16). When a loop
is formed, roll out of the O-ring groove.
Figure 17. Cleaning Freezer Barrel
B. Wash the hopper and freezer barrel with warm (120°F)
detergent (Joy or equivalent) water and brushes
provided. (Fig. 17).
C. Clean the drip tray and insert with a detergent (Joy or
equivalent) solution. Rinse with clean hot (135°F)
water.
3.10 SANITIZE FREEZER AND FREEZER PARTS
A. Use a sanitizing solution of 100 parts per million to
sanitize the parts before assembly.
B Place all parts in the sanitizing solution, then remove
and let air dry.
C. Using this sanitizing solution and the large barrel
brush provided, sanitize the rear of the barrel by
dipping the brush in the sanitizing solution and
brushing.
3.11 ASSEMBLY OF FREEZER
NOTICE
Petro-Gel sanitary lubricant or equivalent must be used
when lubrication of parts is specified.
Figure 16. Removing O-ring
3.9 CLEANING THE FREEZER PARTS
Place all loose parts in a pan or container and take to the
wash sink for cleaning. To clean freezer parts refer to the
following steps:
NOTICE
The United States Department of Agriculture and the Food
and Drug Administration require that lubricants used on
food processing equipment be certified for this use. Use
lubricants only in accordance with the manufacturer's
instructions.
12
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To assemble the freezer parts, refer to the following steps:
A. Assemble all O-rings onto parts dry, without lubri-
cation. Then apply a thin film of sanitary lubrication to
exposed surfaces of the O-rings. Also apply a thin
film of sanitary lubricant inside and outside of the
front auger support bushing.
B Assemble the rear seal onto the auger with the large
end to the rear. Be sure the O-ring is in place before
installing the rear seal.
C. Lubricate the auger drive (rear) with a small amount of
white socket lubricant. A container of socket lubri-
cant is shipped with the freezer.
G Install the spigot body with O-rings into the front
door from bottom. Push straight up until the spigot is
in place.
H. Install the front door on the freezer.
CAUTION
Overtightening or uneven tightening of circular
freezer door knobs may cause damage to door
and void any factory warranties. Tighten circular door knobs evenly . Do not overtighten knobs.
I. Install the circular knobs on the freezer studs and
tighten hand tight.
Look for the proper seal between the freezer barrel, O-ring,
and front door.
Figure 18. Exploded View of Auger
(Front Door and Related Parts)
CAUTION
Do not place Mix Inlet Regulator into hopper before installing Auger Shaft assembly. Mix Inlet
Regulator may be damaged by Auger Shaft during installation.
D. Install the two plastic flights onto the auger and
insert into freezer barrel.
E. Rotate slowly until the augerengages the drive shaft.
F. Install the auger support bushing into the front door.
Figure 19. Mix Inlet Regulator
J. Install the mix inlet regulator into the freezer with the
air tube to the front of the freezer (Fig. 19).
K. Install hopper cover and drain tray and drip tray with
insert.
3.12 ROUTINE CLEANING
To remove spilled or dried mix from the freezer exterior,
simply wash in the direction of the finish with warm soapy
water and wipe dry. Do not use highly abrasive materials
as they will mar the finish.
13
Page 22
It is recommended that a maintenance schedule be followed to keep the freezer clean and operating properly.
A. Cleaning and Sanitizing Information
Soft serve freezers require special consideration
when it comes to food safety and proper cleaning
and sanitizing.
The following information has been compiled by
Purdy Products Company, makers of Stera-Sheen
Green Label Cleaner/Sanitizer and specifically
covers issues for cleaning and sanitizing frozen
dessert machines. This information is meant to
supplement a comprehensive food safety program.
Soil Materials Associated with Frozen Dessert
Machines
MILKFAT/BUTTERFAT – As components of icecream/frozen custard mix, these soils will
accumulate on the interior surfaces of the machine
and its parts. Fats are difficult to remove and help
attribute to milkstone buildup.
MILKSTONE – Is a white/gray film that forms on
equipment and utensils that come in contact with
dairy products. These films will accumulate slowly
on surfaces because of ineffective cleaning, use of
hard water, or both. Milkstone is usually a porous
deposit, which will harbor microbial
contaminants and eventually defy sanitizing
efforts.
CLEANING vs. SANITIZING
It is important to distinguish between cleaning and
sanitizing. 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.
NOTICE
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 procedures that involve milkstone
removal are critical for operators of frozen
dessert machines.
SANITIZING
· Kills bacteria.
· Can be effective on clean surfaces only.
· DOES NOT clean or remove milkstone.
NOTICE
Using a SANTITIZER on an unclean surface will not
guarantee a clean and safe frozen dessert machine.
Proper Daily Maintenance:
The Only Way to Assure Food Safety and
Product Quality
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 BASIS BEFORE IT CAN BECOME A
SIGNIFICANT FOOD SAFETY PROBLEM.
In addition to food safety, milkstone can cause
premature wear to machine parts which can add to
costs for replacement parts or possibly more
expensive repairs if worn machine parts are not
replaced once they have become excessively worn.
Important Differences Between Cleaning and
Sanitizing
Proper daily maintenance can involve a wide variety
of products and procedures. Overall, the products
and procedures fall into three separate categories.
(Please note that this is a brief overview intended for
informational purposes only.)
1. CLEANING – This involves draining mix from the
freezer barrel and rinsing the machine with
water. Next, a cleaner is run through the
machine. Then, the machine is disassembled
and removable 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
period of time. Individual parts are also soaked
in a deliming solution for an extended period of
time (more about delimers in Additional
Information).
14
Page 23
3. SANITIZING – After the machine has been
cleaned and contains no milkstone, the
machine is reassembled. Then a FDA-approved
sanitizing solution is run through the machine to
kill bacteria. The machine is then ready for food
preparation.
As a recommended cleaner and sanitizer for your
frozen dessert machine, STERA-SHEEN has proven
to be one of 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.
Additional Information
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. PRODUCT SAFETY – Strong acids are
dangerous 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.
THE USE OF CHLORINE TEST STRIPS
“ Test strips” are used to determine concentrations of
active chlorine in sanitizing solutions. To use the
strips, tear off a small portion and submerge it into
the sanitizing solution. Then, compare the color
change to the color key 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).
Follow the directions on the container for proper
concentration.
There are two main factors that contribute to falling
chlorine concentrations in a sanitizing solution.
1. PRODUCT USE – As the chlorine in the
solution is being used, chlorine concentrations
fall.
2. TIME – As time passes, small amounts of
chlorine “evaporate” from the solution. (That is
why you can smell it.)
Sanitizing solutions should not be allowed to fall
below 100 ppm chlorine. New solutions should be
mixed once old solutions become ineffective.
3.13 PREVENTIVE MAINTENANCE
A. DAILY
1. The exterior should be kept clean at all times to
preserve the lustre of the stainless steel. A mild
alkaline cleaner is recommended. Use a soft
cloth or sponge to apply the cleaner.
With proper daily use of STERA-SHEEN or it’ s
equivalent, there is
DELIMER.
DO NOT USE BLEACH
· BBLEACH HAS ABSOLUTELY NO CLEANING
PROPERTIES.
· BBLEACH IS CORROSIVE. It can and will
damage components of the machine causing
premature wear and metal corrosion.
GENERAL PURPOSE CLEANERS
GGeneral purpose cleanersdo not have the ability to
remove milkstone. Milkstone will become a problem
if not remedied with additional products and
procedures.
no need for the use of a
CAUTION
Acid-based cleaners, strong caustic componds
and abrasive cleansers will damage plastic
freezer parts and exterior panels. Use mild, alkaline cleansers only.
B. 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
disengage from the support and pulling out.
Clean behind the drip tray and front of the
freezer with a soap solution.
15
Page 24
C. MONTHLY
CAUTION
The freezer has an air cooled condenserand must
have proper air circulation. Maintain a minimum
of 3" clearance at all louvered panels. Failure to
clean the condenser filter on a regular basis and
provide proper clearance may result in serious
freezer damage and may void any factory warranties.
2. Lubricate condenser fan motor with S.A.E. 20 weight
oil. Three to six drops is required.
3.14 EXTENDED STORAGE
Refer to the following steps for storage of the freezer over
any long period of shutdown time:
A. Turn the OFF-ON switch to the OFF position.
B. Disconnect (unplug) from the electrical supply source.
1. Remove the condenser filter by lifting up and pulling
bottom out and down. Then clean with warm soapy
water. Rinse in clean water and shake dry, taking
care not to damage the filter in any way.
2. Replace the condenser filter.
D. SEMIANNUALLY
WARNING
High voltage will shock, burn or cause death.
Turn off and lock out main power disconnect
before servicing. Do not operate machine with
cabinet panels removed.
WARNING
Moving machine parts can grab, mangle, dismember and cause severe crushing injury. Turn
off and lock out main power disconnect before
cleaning or servicing. Do not operate machine
with cabinet panels removed.
C. Clean thoroughly with a warm detergent all parts that
come in contact with the mix. Rinse in clean water and
dry parts. Do not sanitize.
NOTICE
Do not let the cleaning solution stand in the hopper or in
the freezer barrel during the shutdown period.
D. Remove, disassemble and clean the front door, mix
inlet regulator and auger parts. Place the auger flights
and the front auger support bushing in a plastic bag
with a moist paper towel to prevent them from becoming brittle.
1. Check drive belt for proper tension. Push belt in with
one finger, belt should deflect about 3/8".
CAUTION
Do not over-lubricate condenser fan motor. Excess oil may damage motor and void any factory
warranties.
16
Page 25
SECTION 4
TROUBLESHOOTING CHARTS
MELBORP ESUACELBISSOP YDEMER
tonseodrezeerF
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thgilEZEERF
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1
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.tratserneht
.ecalpnitonroodtnorF.4
ehtnitfelneebsahrezeerF.1
02nahteromrofedomNAELC
neebsahhc
01nihtiwsemit3detavitca
.reppohniximoN.1
gniwollatonrota
.lerrabotniwolfotxim
.melborprosneS.3
.dlocootsignitteserutarepmeT.
.eruliafhctiwsezeerfothsuP.2
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.2
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.ecalpniroodtnorfelbmessA.4
ecalpneht,setunim01rofhsalfthgilteL.1
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iareporprofkcehC.8
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.ecivresrofrotubirtsidllaC.tsujdaeR.5
ezeerfdnaezitinas,naelc,
,elbmessaer,naelc,ximevomeR.7
.resnednocehturhtwolfr
.ecivresrofrotubirtsidllaC.metsyskcehC.9
setunim5rofelditisotrezeerf
.ecivresrofrotubirtsidllaC.tsujdaeR.2
17
Page 26
tonseodtcudorP
.esnepsid
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.deggulpsiebutrotalugertelnixiM.2
rotalugertelniximlaicepS.3
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NO-FFOnruT.2
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18
Page 27
SEDOCRORRE
noitcnuflaMrotacidnI
draoBmargorP
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rorrEeuqroTwoL
rorrEnaelC
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To Clear Error Modes
Clean Error 04: Allow freezer to remain on (light blinking) with the power switch in the
ON position for ten (10) minutes minimum. Next, place the power switch in the
OFFposition for five (5) seconds minimum, then place the power switch in the ON
position to restart freezer. All other errors turn power switch off for five (5) seconds
minimum. Then place the power switch in the ON position to restart freezer.
10
20
30
40
50
60
70
RRE
RRE
RRE
RRE
RRE
RRE
RRE
19
Page 28
SNOITACIFICEPS 211OLEDOM
SNOISNEMIDdelooCriA
ETARCHTIWREZEERF
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thgieH
THGIEWETARCHTIWREZEERF
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PMOC HUTB000,21,rosserpmoCenO
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ROSSER
ROTOMEVIRD .P.H4/3
GNILOOC eriuqerstinudeloocriA.elbaliavadeloocretawroriA
EMULOVREPPOH )sr
)mc4.89("57.83)mc8.67("52.03
)mc4.54(578.71
)mc0.37("57.82
)mc2.901("34)mc8.49(13.73
)gk3.361(.sbl063)gk5.131(.sbl092
tiucricRCAHpma02,spmagninnur5.01
.detcennocdroC.rekaerb
.stlov052,pma02,P02-6AMEN
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loocretaW.kcabdnatnorfnoecapsria)mc6,7("3
.sgnittifniarddnaretaw.T.P.N"8/3seriuqerstinu
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EMULOVLERRAB )sretil75.7(trauQ8
*YTICAPACGNIZEERF )F°07(ruohrepsnollaG62
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SGNITTESLORTNOC4EPYT
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gisp17-96
Page 29
SECTION 5
REFERENCE DRAWINGS
ITEM STOELTING PN QTY DESCRIPTION
1 336530-SV 1 Front Door - Shake
2 625314 1 O-ring, 6" OD x 1/4 CS
3 - 1 Door Pin
4 3177738 1 Spigot Body
5 624614 2 O-ring, 3/4 IDX 1.0 ODX 1/8 CS
6 508135 .001 Lubricant, Petro-Gel, 4 Oz. Tubes
FRONT DOOR ASSEMBLY
21
Page 30
ITEM STOELTING PN QTY DESCRIPTION
1 4177749 1 Auger Shaft
2 666786 1 Seal, Rear with Insert
3 624678 1 O-ring, 1-1/2 x 1-1/8 x 3/16 CS
4 149002 1 Bearing Front Auger Celcon
5 508048 .001 Spline Lubricant
6 508135 .001 Lubricant, Petro-Gel 4 oz. tubes
7 162155 2 Blade, Scraper
AUGER ASSEMBLY
22
Page 31
WARRANTY
SOFT SERVE / SHAKE FREEZERS
1. Scope:
Stoelting, LLC warrants to the first user (the “Buyer”) that the freezer cylinders, hoppers, compressors, drive motors,
speed reducers, auger and auger flights of Stoelting soft serve / shake freezers will be free from defects in materials
and workmanship under normal use and proper maintenance appearing within five (5) years, and that all other
components of such equipment manufactured by Stoelting will be free from defects in material and workmanship
under normal use and proper maintenance appearing within twelve (12) months after the date that such equipment is
originally installed.
2.
Disclaimer of Other Warranties:
THIS W ARRANTY IS EXCLUSIVE; AND STOEL TING HEREBY DISCLAIMS ANY IMPLIED W ARRANTY OF MERCHANTABILITY OR FITNESS FOR PAR TICULAR PURPOSE.
3.
Remedies:
Stoelting’s sole obligations, and Buyer ’s sole remedies, for any breach of this warranty shall be the repair or (at
Stoelting’s option) replacement of the affected component at Stoelting’s plant in Kiel, Wisconsin, or (again, at
Stoelting’ s option) refund of the purchase price of the affected equipment, and, during the first twelve (12) months of
the warranty period, deinstallation/reinstallation of the affected component from/into the equipment. Those obligations/remedies are subject to the conditions that Buyer (a) signs and returns to Stoelting, upon installation, the
Checklist/Warranty Registration Card for the affected equipment, (b) gives Stoelting prompt written notice of any
claimed breach of warranty within the applicable warranty period, and (c) delivers the affected equipment to Stoelting
or its designated service location, in its original packaging/crating, also within that period. Buyer shall bear the cost
and risk of shipping to and from Stoelting’ s plant or designated service location.
4.
Exclusions and Limitations:
This warranty does not extend to parts, sometimes called “wear parts”, which are generally expected to deteriorate
and to require replacement as equipment is used, including as examples but not intended to be limited to o-rings,
auger seals, auger support bushings and drive belts. All such parts are sold
AS IS.
Further, Stoelting shall not be responsible to provide any remedy under this warranty with respect to any component
that fails by reason of negligence, abnormal use, misuse or abuse, use with parts or equipment not manufactured or
supplied by Stoelting, or damage in transit.
THE REMEDIES SET FORTH IN THIS W ARRANTY SHALL BE THE SOLE LIABILITY STOEL TING
AND THE EXCLUSIVE REMEDY OF BUYER WITH RESPECT TO EQUIPMENT SUPPLIED BY
STOEL TING; AND IN NO EVENT SHALL STOEL TING BE LIABLE FOR ANY INCIDENT AL OR
CONSEQUENTIAL DAMAGES, WHETHER FOR BREACH OF W ARRANTY OR OTHER CONTRACT BREACH, NEGLIGENCE OR OTHER T ORT , OR ON ANY STRICT LIABILITY THEORY .
Page 32
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