Stoelting SO212 Service Manual

Model SO212

OPERATORS MANUAL

Manual No. 513610 Apr. 2009

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: [phone]
Fax: [phone]

Customer Service: 888.429.5920
Fax: [phone]
Email: [e-mail]

© 2014 PW Stoelting, LLC

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.

TABLE OF CONTENTS

SECTION DESCRIPTION PAGE

1. INTRODUCTION

1.1 Description............................................................................................................. 1

1.2 Specifications ........................................................................................................ 2

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 ............................................................................................. 13

3.12 Routine Cleaning................................................................................................... 13

3.13 Preventive Maintenance ........................................................................................ 15

3.14 Extended Storage ................................................................................................. 15

4. TROUBLESHOOTING ................................................................................................ 19

5. REFERENCE DRAWINGS ......................................................................................... 19

LIST OF ILLUSTRATIONS

FIGURE TITLE PAGE

1- 1 Model SO212 Freezer............................................................................................ 1

1-2 Specifications ........................................................................................................ 1

2- 1 Warning Label Locations ....................................................................................... 3

2-2 Leveling ................................................................................................................. 4

2- 3 Space and Ventilation Requirements ..................................................................... 4

2-4 Electrical Plug ....................................................................................................... 4

2- 5 Power Cord Connection ......................................................................................... 5

3-1 Controls ................................................................................................................. 7

3- 2 Mix Inlet Regulator................................................................................................. 9

3- 3 Sanitizing Hopper .................................................................................................. 9

3- 4 Dispensing Product ...............................................................................................10

3-5 Removing Blender ..................................................................................................11

3-6 Removing Auger Shaft ...........................................................................................12

3-7 Removing O-Ring ...................................................................................................12

3- 8 Cleaning Freezer Barrel .........................................................................................12

3- 9 Auger and Door Assembly .....................................................................................13

5- 1 Replacement Parts ................................................................................................19

SECTION 1

DESCRIPTION AND SPECIFICATIONS

1.1 DESCRIPTION

The Stoelting SO212 floor 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 Stoelting Model SO212
freezer.

Figure 1-1 Model SO212 Freezer

Figure 1-2 Specifications

1

MODEL SO212
FLOOR MODEL
GRAVITY SHAKE FREEZER

1.2 SPECIFICATIONS
DIMENSIONS:

Freezer: 17.6" (45cm) wide x 28.6" (73cm) deep x 63.75" (162cm) high
Crated: 19.5" (50cm) wide x 33" (84cm) deep x 40" (102cm) high

WEIGHT:

Freezer: 332 lbs. (150kg) Crated: 427 lbs. (193kg)

ELECTRICAL:

Description SO212-38
Voltage AC 1 PH 208/230
Total Run Amps 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 back side.
No clearance needed on sides.

HOPPER:

7 Gallons (26,5 liters) refrigerated and insulated.

2

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, INC.

A TTENTION: Customer Service

502 Hwy . 67

Kiel, Wisconsin 53042

Figure 2-1 Warning Label Locations

3

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.

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, 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. Accurate leveling is necessary for correct drainage

of freezer barrel and to insure correct overrun.
Place a level on top of the freezer at each corner
to check for level condition. If adjustment is
necessary, level the freezer by turning the caster
in or out and tighten the locknut. (Fig 2-2).

D. Place the OFF-ON switch in the OFF position.

Figure 2-3 Space and Ventilation Requirements

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. 2-4).
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.

Figure 2-2 Leveling

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. (Fig 2-3).

CAUTION

Failure to provide adequate ventilation will void war­ranty .

Figure 2-4 Electrical Plug

CAUTION

Do not alter or deform the plug in any way .

F. Install the drip tray, drain tray, hopper cover and

other miscellaneous parts on the freezer.

4

2.4 INSTALLING PERMANENT WIRING

If permanent wiring is required by local codes, the follow­ing procedure must be performed.

WARNING

Disconnect freezer from the source of electrical
supply before servicing.

A. Remove the left side panel and electrical box

cover.

B. Disconnect the wires from the terminal block.

Disconnect the green ground wire from the

grounding stud. (Fig 2-5).
C. Remove the power cord.
D. Install permanent wiring according to local code.
E. Replace the electrical box cover and left side

panel.

Figure 2-5 Power Cord Connections

5

6

SECTION 3

INITIAL SETUP AND OPERATION

3.1 OPERATOR’S SAFETY PRECAUTIONS

Safe operation 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 garments,

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, 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.

Consistency/

T emperature

Adjustment

G. Do not operate under unsafe operating conditions.

Never operate the freezer if unusual or excessive
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 3-1 for the location of the operating controls on the
freezer. For the information regarding flashing indicator
lights, refer to Section 4 - Troubleshooting.

WARNING

The Power 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.

Hold/Ready

Switch

OFF-ON

Power Switch

Blender

Power Switch

PUSH TO FREEZE

Switch

CLEAN

Switch

Mix Low

Indicator

Figure 3-1 Controls

7

A. SPIGOT SWITCH

The spigot switch will automatically activate the

auger drive and refrigeration systems when the

spigot is opened to dispense product (pulled

straight downwards). When the spigot is closed,

the drive motor and compressor will remain “on”

until the product in the barrel reaches the proper

temperature.

The spigot switch will also activate the blender

when pushed to the right (spring loaded). The

blender will operate when product is being

dispensed or when the spigot is closed.

B. POWER OFF-ON SWITCH

The Power 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 on the control panel is activated.

C. BLENDER OFF-ON SWITCH

The Blender OFF-ON switch is a two position

toggle switch used to supply power to the blender.

When the switch is in the OFF position, there is no

power to the blender. When the switch is in the ON

position the blender will operate any time the

spigot handle is pushed to the right.

D. PUSH TO FREEZE BUTTON

The PUSH TO FREEZE button is used to start the

freezing cycle. During initial freeze down, the

Power OFF-ON switch is placed in the ON position.

Then the PUSH TO FREEZE button is pressed

until the drive motor and compressor are activated.

NOTE

After the drive motor starts, there is a 3 second de­lay before the compressor starts.

During the normal operation, the red PUSH TO FREEZE
light will illuminate after the freezer has been idle for the
preset cycles. Before drawing product, press the PUSH
TO FREEZE button if it is illuminated. Wait until the green
light illuminates before dispensing.

NOTE

If the freezer shuts off and the PUSH TO FREEZE
light flashes, an error condition has occured. Turn
the Power OFF-ON swtich to the OFF position, cor­rect the problem and turn the freezer back on. (See
Section 4 - T roubleshooting.)

E. GREEN LIGHT

The green light is used to indicate that the product

has reached the proper temperature and is ready

to be dispensed.

NOTE

If the red light next to the PUSH TO FREEZE but­ton is illuminated, press the PUSH TO FREEZE but­ton and wait until the green light illuminates before
dispensing.

F. CLEAN BUTTON

When the CLEAN button is pushed the
refrigeration system will be off and the auger will
rotate for cleaning. When the button 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 place the Power OFF-ON
switch in the OFF position. If the freezer is left in
clean for more than 30 minutes or the CLEAN
button is pushed three times in ten seconds, an
error will occur. To reset, press the CLEAN switch
and allow the error light to flash a minimum of 10
minutes. Then place the Power OFF-ON switch in
the OFF position, wait 5 seconds and place the
switch in the ON position.

G. 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 Section 4 ­Troubleshooting.

H. 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.

NOTE

Failure to refill hopper immediately may result in
operational problems.

I. 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.

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.

8

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.

NOTE

Stoelting has found that S tera-Sheen Green Label
does an effective job of properly sanitizing a shake
freezer. We therefore include a sample with each
new freezer. Other products may be as effective.

CAUTION

Prolonged contact of sanitizer with freezer may
cause corrosion of stainless steel parts.

In general, sanitizing may be conducted as follows:
A. With the auger in place, install the mix inlet

regulator into hopper with air inlet (long) tube

toward the front of the freezer (Fig. 3-2).

C. Place the Power OFF-ON switch in the ON position

and press the CLEAN button. Check for leaks.

D. Clean sides of hopper, mix inlet regulator and

underside of hopper cover using a sanitized soft
bristle brush dipped in the sanitizing solution (Fig.
3-3).

Figure 3-3 Sanitizing Hopper

E. After five minutes, place a bucket under the spigot

and open spigot to drain sanitizing solution. When
solution has drained, press the CLEAN button to
stop the auger. Allow the freezer barrel to drain
completely.

F. Install the blender assembly to fhe front door, plug

the blender into the outlet on the freezer, and
place the Blender Power OFF-ON switch in the
ON position.

G. Submerge the blender shaft into the large cup

with sanitizer solution and push the spigot handle
to the right. Allow the blender shaft to be
submerged for at least 30 seconds.

Figure 3-2 Mix Inlet Regulator

NOTE

It is recommended to sanitize the freezer without
the blender assembly installed. Once the freezer
has been sanitized, install the blender and sanitize
the blender shaft.

B. Prepare 4 gallons (15 liters) of sanitizing solution

following manufacturer’s instructions. Set aside a

large cup of sanitizer solution to sanitize the

blender. Pour the remainder of the solution into

hopper.

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 Power OFF-ON switch in the OFF

position.

NOTE

Make sure the mix inlet regulator and blender as­sembly are in place before adding mix.

C. With spigot open, pour approximately 1 gallon

(3.8 liters) of fully thawed 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.

9

D. Fill hopper with approximately 5 gallons (19 liters)

of pre-chilled (40°F or 4°C) mix.

CAUTION

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 o-ring or check if the mix inlet

regulator was installed correctly or that the freezer

is level.
F. Place the Power OFF-ON switch in the ON position.

Place the Blender Power OFF-ON switch in the

ON position and make sure the blender power

plug is connected to the freezer.

WARNING

Hazardous Moving Parts

Blender shaft and agitator can grap and cause in­jury . Do not operate blender without protective shield
or swing splash shield.

G. Press the PUSH TO FREEZE button until the

freezer starts.

NOTE

After the drive motor starts, there is a 3 second de­lay before the compressor starts.

H. 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.

I. For normal dispensing, pull the spigot handle

down. (Fig. 3-4). Push the spigot handle to the
right to activate the blender. The blender will
operate during dispensing or when the spigot
handle is closed.

CAUTION

Refrigeration is automatically activated when the
spigot is opened (pulled downwards). Close the
spigot completely after dispensing.

J. 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 operator 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.

K. Do not operate the freezer when the mix low light

is on or with less than 1-3/4” (4.4 cm) of mix in the
hopper. Refill the hopper immediately.

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 generally
provide satisfactory product 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.

Old mix or mix that has been stored at elevated tempera­tures will produce poor quality product with a bad taste and
unacceptable appearance. 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 foam
appears in the hopper, skim off with a sanitized utensil and
discard. Periodically, stir the mix in the hopper with a
sanitized utensil to help prevent excess foam.

Figure 3-4 Dispensing Product

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.

10

B. Place the Power OFF-ON switch in the ON position

and push the CLEAN button to rotate the auger.

Allow the mix to agitate in freezer barrel until the

mix has become a liquid, about 5 minutes.
C. Empty mix from the freezer by opening the spigot

and draining into a tall cup and discarding mix.

Continue drawing mix into the cup until the freezer

is empty.
D. Fill a clean and sanitized tall cup with clean 110°F

(43°C) water and submerge blender agitator shaft

into water. Activate blender by pulling spigot to the

right. Allow blender agitator to run for 10-15

secondes. Repeat using a mild detergent.
E. Push the CLEAN button to stop the auger rotation.
F. Place the Blender Power OFF-ON switch into the

OFF position and unplug the blender from the

freezer.
G. Place the Power OFF-ON switch inthe OFF

position.

K. Remove the clear plastic swing shield from the

blender assembly and clean it (Refer to Section

3.9 - Cleaning the Freezer Parts).

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
freezer must be cleaned. To clean the freezer, refer to the
following steps:

A. Close the spigot and fill the hopper with 2 gallons

(7.5 liters) of tap water.

B. Place the Power OFF-ON switch in the ON position

and press the CLEAN button. The auger will start
to rotate.

C. Allow the water to agitate for approximately 5

minutes.

NOTE

If freezer is left in CLEAN for more than 20 minutes,
the display will show an error code.

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 Power OFF-ON switch to the OFF position.
Allow the freezer barrel to drain completely.

E. Repeat Steps A through D using a mild detergent

solution.

Figure 3-5 Removing Blender

H. Remove the knobs on the front door and remove

the blender assembly and set aside (Fig. 3-5).

When the knobs are removed, mix may drip from

the door and barrel into the drip tray.

NOTE

Support the blender with one hand while removing
the knobs on the door to prevent the blender from
dropping.

J. Replace the door knobs on the front door.

3.8 DISASSEMBLY OF FREEZER PARTS

CAUTION

Hazardous Moving Parts

Revolving auger shaft can grab and cause injury.
Place the Power OFF-ON switch in the OFF posi­tion before disassembling for cleaning or servicing.

Inspection for worn or broken parts should be made each
time the freezer is disassembled. 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. Frequency of cleaning must
comply with the local health regulations.

To disassemble the freezer, refer to the following steps:
A. Remove hopper cover and drain tray.
B. Remove the mix inlet regulator from the hopper by

pulling straight up.

C. Remove the front door by turning the circular

knobs and then pulling the front door off the studs.

11

D. Push the spigot body through the bottom of the

front door and remove.
E. Remove the front auger support and bushing (Fig.

3-6).
F. Remove the auger assembly from the freezer.
G. Keep the rear of the auger shaft tipped up once it

is clear of the freezer to avoid dropping rear seal.
H. Remove the scraper blades and the rear seal

assembly.
I. Wipe socket lubricant from the drive end (rear) of

the auger with a cloth or paper towel.
J. Remove all o-rings from parts by first wiping off

the lubricant using a clean paper towel. Then

squeeze the o-ring upward (Fig. 3-7). When a

loop is formed, roll out of the o-ring groove.

CAUTION

Do not use any type of sharp object to remove the
o-rings.

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:

A. Place all parts in warm mild detergent water and

clean with brushes provided. Rinse all parts with
clean hot water.

NOTE

If a dishwasher is used, product damage is likely to
occur.

B. Wash the hopper and freezer barrel with warm

detergent water and brushes provided. (Fig. 3-8)

Figure 3-7 Removing O-Ring

Figure 3-8 Cleaning Freezer Barrel

C. Clean the rear seal surfaces from the inside of the

freezer barrel with warm detergent water.

D. Clean the drip tray and insert with a soap solution.

Rinse with clean hot water.

3.10 SANITIZE FREEZER AND FREEZER
PARTS

A. Use a sanitizing solution mixed according to

manufacturer's instructions to provide 100 parts
per million strength solution. Mix sanitizer in
quantities of no less than 2 gallons (7.5 liters) of
120°F water. Allow the sanitizer to contact the
surfaces to be sanitized for 5 minutes. Any sanitizer
must be used only in accordance with the
manufacturer's instructions.

B. Place all parts in the sanitizing solution, then

remove and let air dry.

12

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 the rear of the barrel.

3.11 ASSEMBLY OF FREEZER

To assemble the freezer parts, refer to the following steps:

NOTE

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.

A. Assemble all o-rings onto parts dry, without

lubrication. Then apply a thin film of sanitary

lubrication (Petrol Gel or equivalent) to exposed

surfaces of the o-rings. Apply a thin film of sanitary

lubricant to metal part of rear seal. Also apply a

thin film of sanitary lubricant inside and outside of

the front auger support bushing.

E. Rotate the auger until the auger engages the drive

shaft.

F. Install the auger support bushing into the front of

the auger.

G. Install the spigot body with o-ring into the front

door from bottom. Push straight up until the spigot

is in place.
H. Install the front door on the freezer.
I. Install the blender assembly onto the front door

studs and tighten the circular knobs on the freezer

studs.

CAUTION

Overtightening or uneven tensioning of circular
knobs may cause damage to front door and cause
leaking. Hand tighten circular knobs evenly .

J. Look for the proper seal between the freezer

barrel, o-ring, and front door.
K. Install the mix inlet regulator into the freezer with

the air tube to the front of the freezer.
L. Install hopper cover and drain tray.

Figure 3-9 Auger and Door Assembly

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 (spline lubricant).
A small container of socket lubricant is shipped
with the freezer.

D. Install the two plastic scraper blades onto the

auger and insert it into the freezer barrel.

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 dam­age the mix inlet regulator.

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.

It is recommended that a maintenance schedule be fol­lowed to keep the freezer clean and operating properly.

CLEANING AND SANITIZING INFORMATION

Shake 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 ice cream/
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 build-up.

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.

13

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

CLEANING vs. SANITIZING
It is important to distinguish between cleaning and sanitiz-

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 pro­cedures 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
guarantee a clean and safe frozen dessert machine.

PROPER DAILY MAINTENANCE: THE ONLY WAY TO

ASSURE FOOD SAFETY AND PRODUCT QUALITY

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).

3. SANITIZING – After the machine has been cleaned
and contains no milkstone, the machine is
reassembled. Then an 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.

With proper daily use of Stera-Sheen or its equivalent,
there is no need for the use of a DELIMER.

DO NOT USE BLEACH

• BLEACH HAS ABSOLUTELY NO CLEANING
PROPERTIES.

• BLEACH IS CORROSIVE. It can and will damage
components of the machine causing premature
wear and metal corrosion.

GENERAL PURPOSE CLEANERS
General purpose cleaners do not have the ability to re-

move milkstone. Milkstone will become a problem if not
remedied with additional products and procedures.

14

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).

NOTE

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 as soon as
old solutions become ineffective or if you are unsure of the
concentration of chlorine.

3.13 PREVENTATIVE MAINTENANCE

A. DAILY

1. The exterior should be kept clean at all times to
preserve the luster of the stainless steel. A mild
alkaline cleaner is recommended. Use a soft cloth
or sponge to apply the cleaner.

CAUTION

Do not use acidic cleansers, strong caustic com­pounds or abrasive materials to clean any part of
the freezer exterior or plastic parts. Use of these
types of cleaners will cause equipment damage.

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.

C. MONTHLY

CAUTION

The freezer has an air cooled condenser and must
have the proper air curculation. Maintain at least 3”
of clearance at all louvered panels. Failure to clean
the condenser filter on a regulat basis my result in
serious freezer damage and could void the freezer
warranty.

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.

D. SEMI-ANNUALLY

1. Check drive belt for proper tension. Push belt in
with one finger, belt should deflect about 3/8".

2. Lubricate condenser fan motor with S.A.E. 20
weight oil. Three to six drops is required.

CAUTION

Do not over-lubricate; resulting damage could cause
motor failure.

3.14 EXTENDED STORAGE

Refer to the following steps for storage of the freezer over
any long period of shutdown time:

A. Turn the Power OFF-ON switch to the OFF

position.

B. Disconnect (unplug) from the electrical supply

source.

C. Clean thoroughly with a warm water detergent all

parts that come in contact with the mix. Rinse in
clean water and dry parts. Do not sanitize.

NOTE

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.

E. In a water cooled freezer, disconnect water lines

and drain water. With a flathead screwdriver, hold
the water valve open and use compressed air to
clear the lines of any remaining water.

15

16

SECTION 4

TROUBLESHOOTING

PROBLEM

Freezer does not
run.

Freezer does not
run, PUSH TO
FREEZE light
flashes in sequence
of four.

Freezer does not
run, PUSH TO
FREEZE light
flashes in sequence
Freezer will not shut
off.

Produc t i s too t hi n.

Produc t i s too t hi ck.

Produc t does not
dispense.

REMEDYPOSSIBLE CAUSE

1. Power to freezer is off. 1. Supply power to freezer.

2. Fuse or c i rcuit if blown or trippe d. 2. Repl ace or res et.

3. Fre eze-up (au ger wi l l not turn). 3. Turn P o wer O F F -O N switc h to OF F for 1 5
minutes, then restart.

4. Front door not i n place. 4. As semble front door in place.

1. Freezer has been left in the CLEA N mode for

more than 20 mi nut es.

2. CLEAN s wi t ch has been ac tivated 3 t i mes

within 10 seconds .

1. No mix i n hopper. 1. Fill hopper wit h m ix

2. Mix inlet regulat or not al lowing m i x to flow int o

barrel.

3. Sens or problem. 3. Call dis t ribut or for service.

1. Temperature sett i ng i s too c ol d. 1. Readjust . Call dis tributor for service.

2. Pus h to freeze swit ch failure. 2. Call dis tributor for service.

3. Spigot switch failure. 3. Call distributor for service.

4. Reduced air flow. 4. Check for proper air flow through the condens er

5. Refrige ration pr obl e m. 5. Check system. Call distri b utor for s e rvice .

1. Product is being di spensed when the P US H TO

FREE ZE light is i ll umi nat ed red.

2. No vent space for free flow of cooli ng air. 2. A m ini m um of 3" of vent s pace required.

3. Air temperature entering condenser is above

100°F.

4. Condenser is dirt y. 4. Clean condens er.

5. Temperature sett i ng too warm. 5. Readjus t. Call di stributor for service.

6. St abil i zers in m i x are broken down. 6. Remove mix, clean, s ani t i ze and rest art with

7. Auger is assem bl ed wrong. 7. Remove mix , clean, reass em ble, sani t i ze and

8. Reduced air flow. 8. Check for proper air flow through the

9. Refrige ration pr obl e m. 9. Check system. Call distributo r for service.

1. Smal l port ions are being dispensed in a s hort

time.

2. Temperature sett i ng i s too c ol d. 2. Readjust . Call dis tributor for service.

3. Line voltage fluc tuating. 3. Call dis tributor for service.

1. No mix i n hopper. 1. Fill hopper wit h m ix.

2. Mix inlet regulat or t ube i s pl ugged. 2. Unplug, us i ng s m al l saniti zed brush.

3. Spec i al m ix inl et regul at or needed for mix being

used.

4. Drive motor overload tripped. 4. Automatic reset. Wait 15 to 30 minutes.

5. Drive belt failure. 5. Replace drive belt.

6. Freeze-up. (A uger will not turn.) 6. Turn Power OFF-ON swit ch to t he OF F positi on

1. Let li ght flash for 10 minutes, then place the
Power OFF-ON switch to the OFF position to
reset.

2. Leave Power OFF-ON switch in the ON pos i tion
for 10 minutes, then place the switch to the
OFF position to reset.

2. Remove mix inlet regulator, clean, sanitize, and
replace.

1. P ress the P USH TO FREEZE push but ton.
W ait until the green light il l um i nat es before
dispensing.

3. Change locat ion or direct hot ai r away from
freezer.

fresh mix.

rest art freezer.

condenser.

1. All ow freezer to sit i dle for 5 minutes before
dispensing.

3. Order special mix in l et regul a tor.

for 15 minutes , then restart.

17

PROBLEM

Drive belt s l i pping or
squealing.

Low overrun.

Front door leak s

Hopper will not
maintain mix
tem p erature belo w
Blender is not
spinning

POSSIBLE CAUSE REMEDY

1. W orn drive belt . 1. Call dis tributor for service.

2. Freeze-up (Auger will not turn). 2. Turn Power OFF-ON switch t o the OFF pos i t i on
for 15 minutes , then restart.

1. Mix inlet regulat or m issi ng. 1. Replace mi x inlet regulator.

2. Mix inlet regulat or o-ring mi ssi ng 2. Replace mi x inlet regulator o-ring.

3. Mix inlet regulat or air tube block ed. 3. Clean with s ani tized brus h.

4. P rodu ct breakdown. 4. Fi ll freez e r wi th fres h pr odu ct.

1. Front door knobs are loose. 1. Tighten knobs.

2. Spigot part s are not lubricated. 2. Assem bl e & l ube c orrec tly.

3. Chipped or worn spigot o-rings . 3. Replac e o-rings.

4. O-rings or s pigot ins t al l ed wrong. 4. Remove spigot and check o-ring.

5. Inner spigot hole in front door nick ed or

scratched.

1. EP R valve needs adjust m ent. 1. Check system. Call distribut or for service.

2. Refrige ration pr obl e m . 2. Chec k s ys tem. Call distributo r for service.

3. Hopper cover not fitt ed properly . 3. Check hopper c over for proper fit.

1. Not pl ugged i n or B le nder swit ch not pl aced in

ON position.

2. Blender s haft, agitat or, and/or coll ar not

tightened.

5. Replace front door.

1. Plug i n blender c ord and t urn B l ender Power
OFF-ON switch t o t he ON pos ition.

2. Tighten components.

18

SECTION 5

REPLACEMENT PARTS

5.1 BRUSHES, DECALS AND LUBRICATION

Part Number Description Quantity

208135 Brush - 4" X 8" X 16" (Barrel) 1
208380 Brush - 1/4" X 3" X 14" 1
208401 Brush - 1" X 3" X 10" 1
324065 Decal - Water Inlet -
324105 Decal - Caution Electrical Shock -
324106 Decal - Caution Electrical Wiring Materials -
324107 Decal - Caution Hazardous Moving Parts -
324141 Decal - Caution Rotating Blades -
324200 Decal - High Pressure Cut-Out -
324208 Decal - Attention Refrigerant Leak Check -

324393 Decal - Stoelting Swirl Logo (Drip Tray Support) -

324509 Decal - Cleaning Instructions -
324566 Decal - Wired According To -
324584 Decal - Adequate Ventilation 3" 1
324593 Decal - Power 1
324686 Decal - Danger Automatic Start 2
324803 Decal - Domed Stoelting Logo (Large) (Header Panel) 1
324804 Decal - Domed Stoelting Swirl (Header Panel) 1
324835 Decal - Blender Power On / Off 1
324837 Decal - Caution Blender 1
324877 Decal - Sonic Logo (Header Panel) -
508048 Lubricant - Spline (2 oz Squeeze Tube) 1

508135 Petrol Gel - 4 oz Tube 1

1177990 Caster Kit - 4" (Set Of 4) 1

1183954 O-Ring Kit (Ser. #0 - #28937) -
2177917 Brush Kit -

19

5.2 AUGER SHAFTS AND FRONT DOOR PARTS

2187941

3177738

624614

624678

666786

2183751

2187907

625314

336530-SV

482019

Part Number Description Quantity

149002 Bushing - Front Auger Support (Ser. #0 - #28937) -
162155 Scraper Blade (Ser. #0 - #28937) -
482019 Knob - Front Door (Black) 4

336530-SV Door w/Pins 1

624614-5 O-Ring - Spigot - Black (5 Pack) 2
624678-5 O-Ring - Rear Seal - Black (5 Pack) 1

625314 O-Ring - Front Door - Black 1

666786 Seal - Rear Auger - Black 1
2183751 Blade - Scraper (Ser. #28938 Plus) 1
2187907 Bushing - Front Auger Support (Ser. #28938 Plus) 1
2187941 Auger Shaft (Ser. #28938 Plus) 1
3177738 Spigot Body 1

20

5.3 BLENDER PARTS AND DRIP TRAY

274031

314466

624607

1177740

674174

521026

417009

681518

744266

Part Number Description Quantity

314466 Cover - Hopper 1

417009 Grid - Drip Tray (White Honeycomb) 1

521026 Blender Agitator 1

624607-5 O-Ring - Mix Inlet - Black (5 Pack) 2

674174 Blender Shaft 1

681518 Shield - Plastic Swing 1

744266 Tray - Drip (White) 1
1177740 Mix Inlet Assembly 1
3177732 Tray - Drain 1

21

22

WARRANTY

SOFT SERVE / SHAKE FREEZERS

1. Scope:

Sto elting, LLC warrants to the first user (the “Buyer”) that the freezer cylinders, hoppers, compressors, drive

motors, speed reducers, augers 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 WARRANTY IS EXCLUSIVE; AND STOELTING HEREBY DISCLAIMS ANY

IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR
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

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 Stoelti ng, or damage in transit.

THE REMEDIES SET FORTH IN THIS WARRANTY SHALL BE THE SOLE LIABILITY

STOELTING AND THE EXCLUSIVE REMEDY OF BUYER WITH RESPECT TO
EQUIPMENT SUPPLIED BY STOELTING; AND IN NO EVENT SHALL STOELTING BE
LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, WHETHER FOR
BREACH OF WARRANTY OR OTHER CONTRACT BREACH, NEGLIGENCE OR
OTHER TORT, OR ON ANY STRICT LIABILITY THEORY.

:

:

AS IS.

721-013, Rev. 0

File: Policy Manual/Warranty softserve1

January 30, 2003