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.
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 Description and Specifi cations
6.1 Decals and Lubrication ...............................................................................19
6.2 Auger Shaft and Faceplate Parts ...............................................................20
6.3 Hopper Parts ..............................................................................................21
Page 6
Page 7
SECTION 1
INTRODUCTION
1.1 DESCRIPTION
The Stoelting F231 fl oor machine is gravity fed. The
machine is equipped with the IntelliTec2 control which
provides a uniform product. The F231 is designed to
operate with almost any type of commercial soft serve or
non-dairy mixes available, including: ice milk, ice cream,
yogurt, and frozen dietary desserts.
This manual is designed to assist qualifi ed service per-
sonnel and operators in the installation, operation and
maintenance of the Stoelting F231 gravity machine.
connection typeNEMA 6-20P power cord providedNEMA L15-20P power cord provided
International Option1 Phase, 220-240 VAC, 50Hz
Compressor12,000 Btu/hr (R-404A)
Drive MotorTwo - 3/4 hp
Air FlowAir cooled units require 3” (7,6 cm) air space on the right side
Plumbing Fittings
Maximum water pressure of 130 psi. Minimum water fl ow rate of 3 GPM. Ideal
19-1/4’’ (48,9 cm)32’’ (81,3 cm)
58-1/4’’ (148,0 cm)60’’ (152,4 cm)
Water cooled units require 1/2” N.P.T. water and drain fi ttings.
EWT of 50°-70°F
Hopper VolumeTwo - 3 gallon (11,35 liters)
Freezing Cylinder
Volume
Two - 0.85 gallon (3,22 liters)
Owner’s Manual #5136582 F231 Model Machines
Page 9
SECTION 2
INSTALLATION INSTRUCTIONS
2.1 SAFETY PRECAUTIONS
Do not attempt to operate the machine until the safety
precautions and operating instructions in this manual are
read completely and are thoroughly understood.
Take notice of all warning labels on the machine. 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 machine. 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
ATTENTION: Customer Service
502 Hwy. 67
Kiel, Wisconsin 53042
2.2 SHIPMENT AND TRANSIT
The machine has been assembled, operated and inspected
at the factory. Upon arrival at the fi nal destination, the
entire machine must be checked for any damage which
may have occurred during transit.
With the method of packaging used, the machine 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 machine 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.
PRIOR TO INSTALLATION
A. Locate a copy of the service contact fi le (info.txt).
B. Modify the info.txt fi le with information from the
service company using the instructions in the fi le.
C. Put the service contact fi le onto the root level of
a USB fl ash drive (do not put the fi les into any
folder).
INSTALLATION
A. Uncrate the machine.
B. Install the four casters. Turn the threaded end
into the machine until no threads are showing. T o
level, turn out casters no more than 1/4” maximum,
then tighten all jam nuts.
C. The machine must be placed in a solid level
position.
NOTE
Accurate leveling is necessary for correct drainage
of freezing cylinder and to ensure correct overrun.
D. Machines with air cooled condensers require a
minimum of 3” (7,5cm) of space on both sides
for proper circulation.
E. Machines that have a water cooled condenser
require 1/2” NPT supply and drain fi ttings.
INSTALLING PERMANENT WIRING
A. Refer to the nameplate on the side panel of the
machine for specifi c electrical requirements. Make
sure the power source in the building matches
the nameplate requirements.
B. Remove the back panel and the junction box
cover located at the bottom of the machine.
C. Install permanent wiring according to local code.
2.3 MACHINE INSTALLATION
WARNING
Installation must be completed by a qualifi ed
electrician/refrigeration specialist.
Incorrect installation may cause personal injury,
severe damage to the machine and will void factory warranty.
Installation of the machine involves moving the machine
close to its permanent location, removing all crating, setting in place, assembling parts, and cleaning.
Owner’s Manual #5136583 F231 Model Machines
Page 10
2.4 INTELLITEC2™ SETUP
A. Disassemble, clean, lubricate and assemble the
machine following the steps in Section 3.
B. Fill the hoppers with sanitizer.
C. Connect power to the machine and press the
Main Power On/Off button.
MOTOR CALIBRATION
Before starting the motor calibration, be sure there is
sanitizer in the freezing cylinder.
A. Press the On/Off Left or On/Off Right button. The
Motor Calibration screen will be displayed.
Figure 2-1
C. After the password is accepted, use the arrows to
move the cursor to the Modify Settings option and
press the SEL button. Then move the cursor to
the User Preferences and press the SEL button.
Figure 2-2
D. On the User Preferences screen move the cursor
to the Contact Information USB Update and press
the SEL button.
B. Move the cursor over the Left side and press the
SEL button then move the cursor over the Right
side and press the SEL button.
NOTE
The motor calibration can be done for both sides
simultaneously.
C. After the calibration is complete, press the left
arrow button.
D. Drain the machine of sanitizer.
SETTING CONTACT INFORMATION (OPTIONAL)
A. Plug your USB fl ash drive into the control if it is
not already plugged in.
B. From the Current Status screen, press the left
arrow button to access the passcode selection
screen. Press the right arrow, SET, and then the
SEL button.
Figure 2-3
E. The screen will change and show “File Found” for
a quick second while it updates the information.
F . After updating the contact information, the screen
will show the Service Contact Information page.
Figure 2-4
G. Press the left arrow button to go back to the Current
Status screen and remove the USB fl ash drive.
Owner’s Manual #5136584 F231 Model Machines
Page 11
SETTING TIME AND DATE
A. Press the right arrow button.
B. Move the cursor to the Modify Settings option
and press the SEL button. Then move the cursor
to the Time and Date option and press the SEL
button and adjust the settings as required.
1. Press the SEL button to enter the Modify T ime
and Date screen.
2. Move the cursor to the setting that needs to
be changed and press the SET button.
3. Use the arrow buttons to change the setting
and press the SET button to save the change.
Figure 2-5
C. Press the left arrow button until the Current Status
screen is displayed.
SETTING CONSISTENCY
A. Install the mix inlet regulator.
B. Fill the hopper with liquid mix.
C. Press the Push to Freeze button and let the
machine cycle 1-2 times.
D. Draw product from the barrel immediately after
the compressor cycles off after the fi fth time and
test the product for consistency and temperature.
E. Adjust the product consistency by increasing or
decreasing the Consist Offset settings. These
settings are under the Modify Settings - Basic
Settings menu
F. Adjust the settings as follows:
1. If the product is too soft, increase the CutIn
Consist Offset.
2. If the product is too fi rm, decrease the CutIn
Consist Offset.
F. After the consistency is set, press the left arrow
button once so that the Modify Operating Settings
screen is displayed.
SETTING SERVE TIME AND OVERRUN DETAILS
A. Go to the Advanced Settings (2 of 2) screen and
scroll down to the Time to Dispense 16 oz option.
B. Time how long it takes to dispense 16 oz of product
into a cup and change the value in the control.
C. Measure to overrun of the product and change
the value in the control. To measure overrun, do
the following:
1. Zero a scale with an 8 - 16 oz cup.
2. Fill the cup with liquid mix and weigh it. Make
sure the mix is fi lled to the rim.
3. Fill the cup with frozen product. Make sure
there are no voids (air pockets) when fi lling.
4. Scrape the top of the cup with a straight edge.
5. Weigh the fi lled cup.
6. Calculate the overrun using the following
equation:
D. Change the value in the control.
E. Press the left arrow button until the Current Status
screen is displayed.
SETTING DISCHARGE PRESSURE ON WATER
COOLED MACHINES
A. Water cooled machines require the water
condenser valves to be adjusted to maintain a
225-235 psig discharge pressure.
When adjusting the discharge pressure the
machine must be under a full load with both
cylinders and the hopper running.
Owner’s Manual #5136585 F231 Model Machines
Page 12
Owner’s Manual #5136586 F231 Model Machines
Page 13
SECTION 3
INITIAL SET-UP AND OPERATION
3.1 OPERATOR’S SAFETY PRECAUTIONS
SAFE OPERATION IS NO ACCIDENT; observe these
rules:
A. Know the machine. Read and understand the
Operating Instructions.
B. Notice all warning labels on the machine.
C. Wear proper clothing. Avoid loose fi tting garments,
and remove watches, rings or jewelry that could
cause a serious accident.
D. Maintain a clean work area. Avoid accidents by
cleaning up the area and keeping it clean.
E. Stay alert at all times. Know which switch, push
button or control you are about to use and what
effect it is going to have.
F. Disconnect power for maintenance. Never
attempt to repair or perform maintenance on the
machine until the main electrical power has been
disconnected.
G. Do not operate under unsafe operating conditions.
Never operate the machine if unusual or excessive
noise or vibration occurs.
3.2 OPERATING CONTROLS AND INDICATORS
Before operating the machine, it is required that the operator know the function of each operating control. Refer
to Figure 3-1 for the location of the operating controls on
the machine. For the information regarding error codes
displayed on the control panel, refer to the troubleshooting
section of this manual.
WARNING
High voltage will shock, burn or cause death. The
OFF-ON switch must be placed in the OFF position
prior to disassembling for cleaning or servicing. Do
not operate machine with panels removed.
A. INTELLITEC2 TOUCHPAD
Main Power On/Off
The Main Power button is used to supply power to the
IntelliTec2™ control, the freezing cylinder circuits and
the storage refrigeration system. When the machine is
fi rst plugged in, the control defaults to the On status with
power to the hopper only . If the Main Power On/Off button
is pressed when the machine is on, the machine turns off
and a status message displays on the screen.
IntelliT ec2™ Control
(See Figure 3-2)
Figure 3-1 Machine Controls
Owner’s Manual #5136587 F231 Model Machines
Dispense
Rate Adjustor
Page 14
Figure 3-2 IntelliTec2 Control
Help
Pressing the Help button displays help information dependent on the cursor’s location. Pressing the Help button
again exits the help screen.
Selection Button (SEL)
The SEL button is used by technicians to select menu
options.
Set Button (SET)
The SET button is used by technicians to save changes
when modifying control settings.
On/Off Button
Power to the freezing cylinders is controlled with the On/
Off Left and On/Off Right switches.
Push to Freeze Button
Pressing the PUSH TO FREEZE button initiates “Serve
Mode”.
Clean Button
The CLEAN button initiates “Clean Mode”.
Arrow Buttons ()
The arrow buttons are used by technicians to navigate
through the control readings and settings.
B. DISPENSE RATE ADJUSTOR
The dispense rate adjustor is located under the header
panel, to the immediate right of the spigot handles. Turning
the knob counterclockwise decreases the dispense rate.
C. USB ACCESS PORT
The USB access port is located on the right side panel
of the machine. The port is used by technicians to import
fi rmware and export machine statistics.
3.3 EMPTYING THE FREEZING CYLINDER
If the machine is empty, go to Section 3.4.
A. Make sure the Main Freezer Power is on. If the
IntelliT ec2™ displays the Current Status Screen,
then the main power is on.
B. Turn off the freezing cylinders by pressing the
On/Off buttons.
C. Remove the hopper covers and remove the mix
inlet regulators from the hoppers.
D. Press the Clean buttons. After about 5 minutes
open the spigots to drain the mix.
E. Press the Clean buttons to stop the auger.
F . Fill each hopper with 2 gallons (8 liters) of cool tap
water. Optional: Use detergent solution instead of
tap water to make cleaning the parts easier after
disassembly.
G. Press the Clean buttons and let the augers rotate
for at least 30 seconds.
H. While the augers are rotating, scrub the hoppers
with a clean brush.
I. Drain the water out of the machine.
J. Press the Clean buttons to stop the augers.
NOTE
If the water does not drain clear, repeat steps F
through J.
3.4 DISASSEMBLY OF MACHINE PARTS
Before using the machine for the fi rst time, complete
machine disassembly, cleaning, and sanitizing procedures need to be followed. Routine cleaning intervals and
procedures must comply with the local and state health
regulations. Inspection for worn or broken parts should
be made at every disassembly of the machine. All worn
or broken parts should be replaced to ensure safety to
both the operator and the customer and to maintain good
machine performance and a quality product. Check the
wear line on the auger fl ights on a regular basis (Fig. 3-3)
and replace as needed.
Wear Line
Figure 3-3 Auger Flight Wear
Owner’s Manual #5136588 F231 Model Machines
Page 15
T o disassemble the machine, refer to the following steps:
NOTE
The hopper covers have compartments for all
freezing cylinder parts. The covers help with parts
identifi cation and prevent loss of parts. After dis-
assembly, place the freezing cylinder parts in the
hopper covers to transport them to and from the
washing station.
A. DISASSEMBLY OF FRONT DOOR
1. Press and hold the Main Freezer Power button
for three seconds to turn the power off.
2. Remove the rosette caps or spigot extensions if
installed.
3. Remove the knobs on the front door.
4. Remove the front door by pulling it off the studs.
5. Remove the spigot through the bottom of the front
door.
6. Remove all o-rings from parts by fi rst wiping off
the lubricant using a clean towel. Then squeeze
the o-ring upward to form a loop (Fig. 3-4). Roll
the o-ring out of the groove.
Figure 3-4 Removing O-Ring
B. DISASSEMBLY OF AUGER
1. Remove the front auger supports and bushings.
2. Remove the auger assemblies from the machine.
Pull the augers out of the freezing cylinders slowly.
As the augers are being pulled out, carefully
remove each of the plastic fl ights with springs.
3. Keep the rear of the augers tipped up once they
are clear of the freezing cylinders to prevent the
rear seal assemblies from dropping.
4. Wipe the lubricant off of the hex ends of the
augers with a paper towel. Remove the rear seal
assemblies (Fig. 3-5).
5. Unscrew the springs from the auger fl ights.
Figure 3-5 Rear Seal Assembly
3.5 CLEANING DISASSEMBLED PARTS
Disassembled parts require complete cleaning, sanitizing
and air drying before assembling. Local and state health
codes dictate the procedure required. Some state health
codes require a four sink process (pre-wash, wash, rinse,
sanitize, air dry), while others require a three sink process
(without the pre-wash step). The following procedures
are a general guideline only . Consult your local and state
health codes for the procedures required in your location.
A. Disassemble all parts. (Refer to Section 3.4 for
the disassembly of machine parts)
B. Place all parts in 90° to 110°F (32°C to 43°C)
mild detergent water and wash thoroughly. Use
the brushes that shipped with the machine to
clean all holes in the front door, fl ights, mix pickup
assembly, etc.
C. Rinse all parts with clean 90° to 110°F (32°C to
43°C) water.
D. Place all parts in a sanitizing solution for at least
1 minute, then remove and let air dry completely
before assembling in machine.
3.6 CLEANING THE MACHINE
INTERIOR CLEANING
A. Using detergent solution and the large barrel
brush provided, clean the hoppers and freezing
cylinders.
NOTE
Make sure to thoroughly clean the rear seal surfaces on the inside of the freezing cylinders.
B. Wrap the brush in a clean cloth and thoroughly
dry the hoppers and freezing cylinders.
C. Remove the drip tray and drain trays. Clean and
replace the trays.
Owner’s Manual #5136589 F231 Model Machines
Page 16
EXTERIOR CLEANING
The exterior should be kept clean at all times to preserve
the luster of the stainless steel. A high grade of stainless
steel has been used on the machine to ease cleanup. To
remove spilled or dried mix, wash the exterior with 90° to
1 10°F (32°C to 43°C) mild detergent water and wipe dry.
Do not use highly abrasive materials, as they will mar the
fi nish. Use a soft cloth or sponge to apply the solution.
For best results, wipe with the grain of the steel.
3.7 ASSEMBLING MACHINE
T o assemble the machine parts, refer to the following steps:
NOTICE
Total Blend sanitary lubricant, Petrol-Gel sanitary
lubricant, or equivalent must be used when lubrication of machine parts is specifi ed.
T otal Blend can be used in place of two products. It
is used to lubricate parts and also used in place of
spline lubricant. Do not use more than one packet
of Total Blend per freezing cylinder.
NOTICE
The United States Department of Agriculture and
the Food and Drug Administration require that lubricants used on food processing equipment be certifi ed for this use. Use lubricants only in accordance
with the manufacturer’s instructions.
A. ASSEMBLE THE REAR SEAL
1. Install the rear seal o-rings onto the augers.
Lubricate the outside of the o-rings with a generous
amount Total Blend lubricant.
2. Lubricate the inside metal surface of the rear
seals (Fig. 3-6) and install them onto the auger
shafts. DO NOT lubricate the outside of the rear
auger seals.
3. Lubricate the hex drive ends of the augers with
a small amount of Total Blend lubricant.
B. ASSEMBLE THE AUGER
1. Screw the springs onto the studs in the plastic
fl ights. The springs must be screwed into the
fl ights completely to provide proper compression.
2. Install the two plastic fl ights onto the rear of the
auger and insert it part way into the freezing
cylinder.
3. Install the remaining plastic fl ights, push the auger
into the freezing cylinder, and rotate slowly until
the auger engages the drive shaft.
4. Apply a thin layer of sanitary lubricant to the inside
and outside of the auger support bushings. Install
the bushings onto the auger supports and install
the auger supports into the front of the augers.
Rotate the auger supports so that one leg of the
support points straight up.
C. ASSEMBLE THE FRONT DOOR
1. Install the o-rings onto the spigot bodies and apply
a thin layer of sanitary lubricant to the o-rings.
Install the spigot bodies through the bottom of
the front door.
2. Fit the front door o-ring into the groove on the
rear of the front door.
3. Place the front door assembly on the mounting
studs and the push front door against the machine
carefully.
NOTE
Make sure the pins of the front door do not touch
the legs of the auger support.
4. Secure the front door to the machine by placing
the knobs on the studs and tightening until fi nger
tight. Tighten in a crisscross pattern. Do not
overtighten. Proper o-ring seal can be observed
through the transparent front door.
5. Optional: Install the rosette caps or spigot
extensions.
3.8 SANITIZING
Sanitizing must be done after the machine is clean and
just before the machine is fi lled with mix. Sanitizing the
night before does not ensure sanitization the next day.
However, you should always clean the machine and parts
after using it.
NOTE
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 certifi ed for this use.
Figure 3-6 Lubricate Rear Seal
Owner’s Manual #51365810 F231 Model Machines
Page 17
Position Air
Tube Towards
Front of Machine
Figure 3-7 Mix Inlet Regulator
When sanitizing the machine, 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 in
quantities of no less than 2 gallons of 90°F to 1 10°F (32°C
to 43°C) water. Allow sanitizer to contact the surfaces to
be sanitized for 5 minutes. Any sanitizer must be used
only in accordance with the manufacturer’s instructions
and provide a 100 parts per million strength solution.
A. For each freezing cylinder, Prepare 2 gallons
of Stera-Sheen sanitizing solution following the
manufacturer’s instructions.
B. Install the mix inlet regulators into the hoppers.
1. With the standard style (Fig 3-7), insert it with
the air tube towards the front of the machine.
2. With the adjustable style, insert it with the bend
towards the right.
NOTE
Do not twist the mix inlet regulator when installing.
C. Pour the sanitizing solution into the hopper.
D. Make sure the display shows the freezing cylinder
is off. If it is not, press the On/Off button to turn
it off.
NOTE
If the freezing cylinder is not off, the control will
not go into Clean mode. This is to protect from
accidentally going into Clean mode with product
in the cylinder.
E. Press the CLEAN button.
F. Check for leaks.
1. Check for leaks at the front door seal.
2. Check the drain tray located under the front
door for leaks coming from the rear of the rear
auger seal.
G. Use a sanitized soft bristle brush dipped in
sanitizing solution to clean the hopper sides,
the mix inlet regulator, and the underside of the
hopper cover.
H. After the fi ve minute timer expires, open the spigot
to drain the sanitizing solution.
I. Press the CLEAN button to stop the auger. Allow
the freezing cylinder to drain completely.
The machine is now sanitized and ready for adding mix.
3.9 FREEZE DOWN AND OPERATION
A. Sanitize immediately before use.
B. Fill the hopper with at least 2.5 gallons of mix.
C. Place a container under the spigot and open the
spigot to allow the mix to fl ush out about 8 ounces
(0.23 liters) of sanitizing solution and liquid mix.
D. Press the On/Off button to turn on the freezing
cylinder.
E. Allow the freezing cylinder to fi ll. Then press the
PUSH TO FREEZE button.
F. When the product is ready, the display reads
“SERVE”. Open the spigot to dispense product.
NOTE
If the product consistency needs to be adjusted,
use the Technician passcode and go to the Basic
Settings menu. Adjust the CutIn Consistency Offset higher to increase the consistency or lower to
decrease the consistency. Make adjustments in
increments of 5 for best results.
G. The machine dispenses product at a reasonable
draw rate. If the machine is overdrawn, the result
is a soft product or a product that will not dispense
at all. If this occurs, allow the machine to run for
approximately 30 seconds before dispensing more
product. A dispense rate adjustor is located under
the header panel, to the immediate right of the
spigot handle. Turning the knob counterclockwise
decreases the dispense rate.
H. Do not operate the machine when the MIX
LOW message is displayed. Refi ll the hopper
immediately.
NOTE
After a preset number of freezing cycles in Serve
mode, the control enters sleep mode and remains
there until someone draws product or presses the
PUSH TO FREEZE button. In the sleep mode, the
machine keeps the product below 41°F (5°C). Sleep
modes do not take the place of cleaning and sanitizing. Federal, State, and local regulatory agencies
determine frequency of cleaning and sanitizing.
Owner’s Manual #51365811 F231 Model Machines
Page 18
3.10 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 fi nished frozen product. A change
in machine performance that cannot be explained by a
technical problem may be related to the mix.
Proper product serving temperature varies from one
manufacturer’s mix to another. Mixes should provide a
satisfactory product in the 20°F to 24°F range. Diet and
low-carb mixes typically freeze to proper consistency at
higher temperatures.
When checking the temperature, stir the thermometer in
the frozen product to get an accurate reading.
Old mix, or mix that has been stored at too high a temperature, can result in a fi nished product that is unsatisfactory.
To retard bacteria growth in dairy based mixes, the best
storage temperature range is between 33° to 38°F (0.5°
to 3.3° C).
Owner’s Manual #51365812 F231 Model Machines
Page 19
SECTION 4
MAINTENANCE AND ADJUSTMENTS
This section is intended to provide maintenance personnel
with a general understanding of the machine adjustments.
It is recommended that any adjustments be made by a
qualifi ed person.
WARNING
Hazardous voltage
Make sure the machine is off when disassembling
for servicing. The machine must be disconnected
from electrical supply before removing any access
panel. Failure to disconnect power before servicing
could result in death or serious injury.
4.1 FINE CONSISTENCY ADJUSTMENT
Product consistency can be adjusted on the Fine Consistency Adjustment screen. To get to the Fine Consistency
Adjustment Screen, press the right arrow then the SEL
button from the Current Status screen. Then move the
cursor to the Fine Consistency Adjustment option and
press the SEL button.
Increasing the Fine Consistency number increases the
product consistency (fi rmer product). The Consistency
Limits show the Fine Consistency adjustment added to
the Consistency number.
Figure 4-1 Fine Consistency Adjustment
4.2 DRIVE BELT TENSION ADJUSTMENT
To check belt tension, refer to Figure 4-1 and follow the
steps below:
A. Remove the back panel.
B. Use a Burroughs Belt Tension Gauge to set the
tension for the drive belt. Set the belt tension to
35-40 lbs.
C. If an adjustment is necessary, loosen the four
motor plate retaining nuts, adjust belt tension
then retighten the four nuts.
Figure 4-1 Belt Tension Adjustment
D. Using a straightedge, check that the drive motor
pulley is aligned with the speed reducer pulley.
Align the pulley if necessary.
NOTE
Belt life will be increased if new drive belts are
tightened after two or three weeks of operation.
4.3 CONDENSER CLEANING (AIR-COOLED
MACHINES)
The air-cooled condenser requires periodic cleaning. To
clean, refer to the following procedures.
A. Disconnect power to the machine
B. Remove the Phillips head screws from the right
side panel, and remove the panel.
C. To remove a condenser fi lter, grasp the top and
pull off. Visually inspect the fi lter for dirt. If it is
dirty , shake or brush excess dirt off of it and wash
it in warm, soapy water. Once the fi lter is clean,
rinse it thoroughly in warm, clear water and shake
dry , taking care not to damage the it in any way.
NOTE
If the condenser is not kept clean, refrigeration effi ciency will be lost.
4.4 PREVENTATIVE MAINTENANCE
It is recommended that a preventative maintenance
schedule be followed to keep the machine clean and
operating properly . The following steps are suggested as
a preventative maintenance guide.
Owner’s Manual #51365813 F231 Model Machines
Page 20
The United States Department of Agriculture and the Food
and Drug Administration require that lubricants used in
food zones be certifi ed for this use. Use lubricants only in
accordance with the manufacturer’s instructions.
A. Daily checks
Check for any unusual noise or condition and
repair immediately.
B. Monthly checks
Check the condenser fi lter for dirt and clean if
necessary.
C. Quarterly Checks
Check drive belts for wear and tighten belts if
necessary.
4.5 EXTENDED STORAGE
Refer to the following steps for storage of the machine
over any long period of shutdown time:
A. Thoroughly clean all parts that come in contact
with mix with warm detergent water. Rinse in clear
water and dry all parts. Do not sanitize.
NOTE
Do not let cleaning solution stand in the freezing
cylinder or hopper during the shutdown period.
B. Remove, disassemble, and clean the front door,
and auger shaft. Leave disassembled during the
shutdown period.
C. Place the auger fl ights and auger support bushing
in a plastic bag with a moist paper towel. This
prevents them from becoming brittle if exposed
to dry air over an extended period of time (over
30 days).
D. For water-cooled machines that are left in unheated
buildings, or buildings subject to freezing, the water
must be shut off and disconnected. Disconnect
the water inlet fi tting. The fi tting is located at the
rear of the machine. Run the compressor for 2 - 3
minutes to open water valve (the front door must
be attached for the compressor to run). Blow
out all water through water inlet. Drain the water
supply line coming to the machine. Disconnect
the water outlet fi tting.
E. Press the Main Power On/Off button to turn the
machine off.
F. Disconnect the machine from the source of
electrical supply.
Owner’s Manual #51365814 F231 Model Machines
Page 21
SECTION 5
TROUBLESHOOTING
5.1 ERROR CODES
When the machine experiences a problem, one of the
following error codes is displayed on the control panel.
Each error code directs you to the system location of the
malfunction.
ERROR CODE MALFUNCTION
2* High Torque
3* Run Time
4 Clean
5 Freezing Cylinder Sensor
6 Hopper Sensor (single hopper machines)
7* Drive Motor
8 Cab Sensor
9 High Pressure Cutout
10 Ambient Sensor
11* Prime (cab units only)
12 Left Hopper Sensor
13 Right Hopper Sensor
21* Spigot Open Time
* After this error occurs, the machine goes into Sleep 3
mode where the compressor runs on timers and the drive
motor does not run. The timers keep the product at a safe
temperature until the machine can get serviced.
To return the machine to normal operation, any error
causing condition must be corrected and the power to
the affected freezing cylinder must be cycled. Turn the
power to the freezing cylinder off then back on using the
On/Off button of the affected freezing cylinder.
5.2 TROUBLESHOOTING - MACHINE
Error Code 2 - High Torque
If the control panel displays a High Torque Error
(E2), the controller has sensed that the drive motor
is running at a high load for 10 or more seconds.
This may be due to the product consistency
adjustment being set too high. Press the On/Off
button for the cylinder to turn it off, wait until the
product in the freezing cylinder thaws and then
turn the cylinder back on. If the error persists,
contact your Authorized Stoelting Distributor for
further assistance.
Error Code 3 - Run Time
The Run Time Error (E3) occurs when the
compressor runs continuously for an extended
period. This error is generally caused by very
low mix levels in the hopper or from product
breakdown. Another common cause results from
a restriction preventing mix from entering the
freezing cylinder. Check the mix in the hopper.
If the level mix is low, add mix. If there is a
possibility that the mix has broken down, clean
and sanitize the machine and replace the mix
with fresh product.
Ice crystals in the hopper can clog the mix inlet
system and prevent mix from entering the freezing
cylinder. Thoroughly thaw mix per manufacturer’s
recommendations. T o check for ice crystals, pour
a small amount of product from the mix container
through a clean and sanitized sieve or strainer.
If ice crystals are in the mix, check temperature
of the walk-in cooler where the mix is stored.
In air cooled machines, the Run Time Error
may indicate that airfl ow within the machine
has reduced or stopped. Check the sides of the
machine for anything that would restrict airfl ow.
If the error persists after attempting to clear it,
contact your Authorized Stoelting Distributor for
further assistance.
Error Code 4 - Clean
If the machine is left in the Clean Mode for more
than 20 minutes, the control panel displys a
Clean Error (E4). This condition does not refl ect a
problem with the machine itself. The Clean Error
has been programmed into the controller as a
safeguard to protect the machine from potential
damage caused by the machine being accidentally
left in "Clean Mode". To clear the Clean Error,
press the On/Off button for the cylinder to turn if
off then back on.
Owner’s Manual #51365815 F231 Model Machines
Page 22
Error Code 5 - Freezing Cylinder Sensor
The Freezing Cylinder Sensor Error (E5) indicates
a failure of the sensor or that the sensor is out
of range. If the control panel displays an E5,
press the On/Off button for the cylinder to turn
if off then back on. If the error persists, contact
your Authorized Stoelting Distributor for further
assistance.
NOTE
When the machine encounters a Freezing Cylinder
Sensor Error, the machine continues to run using
preset timers. This mode allows the operator to
continue serving product until the machine can be
serviced.
for the cylinder to turn if off then back on. If the
error persists, contact your Authorized Stoelting
Distributor for further assistance.
Error Code 8 - Cab Sensor
A Cab Sensor Error (E8) will not occur on the
machine.
Error Code 9 - High Pressure Cutout
High Pressure Cutout Errors (E9) are usually
caused by a dirty or ineffi cient condenser. If the
control panel displays an E9 on an air cooled
machine, check for proper air clearance around
the machine. If there is an E9 on a water cooled
machine check for proper fl ow from the water
supply or kinks in the hoses.
If the error persists, contact your Authorized
Stoelting Distributor for further assistance.
Error Code 10 - Auxiliary Sensor
An Auxiliary Temperature Sensor Error (E10)
occurs if the temperature sensor on the control
board fails. Press the On/Off button for the cylinder
to turn if off then back on. If the error persists,
contact your Authorized Stoelting Distributor for
further assistance
Error Code 11 - Prime Error
The Prime Error (E11) will not occur on the
machine.
Error Code 12 - Left Hopper Sensor
The Left Hopper Sensor Error (E12) indicates
a failure of the hopper sensor or if the sensor is
out of range. If the control panel displays an E12,
press the On/Off button for the cylinder to turn
if off then back on. If the error persists, contact
your Authorized Stoelting Distributor for further
assistance.
Error Code 13 - Right Hopper Sensor
The Right Hopper Sensor Error (E13) indicates
a failure of the hopper sensor or if the sensor is
out of range. If the control panel displays an E12,
press the On/Off button for the cylinder to turn
if off then back on. If the error persists, contact
your Authorized Stoelting Distributor for further
assistance.
Error Code 21 - Spigot Open Time
The Spigot Open Time Error (E21) indicates a
failure of the spigot switch. If the control senses
the spigot is open continuously for 10 minutes, the
machine goes into Sleep 3 mode. If the control
panel displays an E21, press the On/Off button
for the cylinder to turn if off then back on. If the
error persists, contact your Authorized Stoelting
Distributor for further assistance.
Owner’s Manual #51365816 F231 Model Machines
Page 23
5.3 TROUBLESHOOTING - MACHINE
PROBLEMPOSSIBLE CAUSEREMEDY
Machine does not
run.
Machine will not
shut off.
Product is too fi rm.
Product is too soft.
Product does not
dispense.
Drive belt slipping
or squealing.
Rear auger seal
leaks.
Front door leaks.
1 Power to machine is off.1 Supply power to machine.
2 Freeze-up (auger will not turn).2 Turn machine off for 15 minutes, then restart.
3 Front door not in place.3 Assemble front door in place.
1 Refrigeration problem.1 Check system. (Call distributor for service)
1 CutOut Consistency setting too high1 Adjust the CutOut Consistency (See Section 3)
1 No vent space for free fl ow of cooling
air.
2 Condenser is dirty.2 Clean the condenser. (See Section 4)
3 CutOut Consistency setting too low3 Adjust the CutOut Consistency (See Section 3)
4 Auger is assembled incorrectly.4 Remove mix, clean, reassemble, sanitize and
5 Refrigeration problem.5 Check system. (Call distributor for service)
1 No mix in hopper.1 Add mix to the hopper.
2 Drive motor overload tripped.2 Wait for automatic reset. (If condition
3 Drive belt failure.3 Replace drive belt.
4 Freeze-up (Auger will not turn).4 Turn off cylinder, wait for 15 minutes, then
1 Worn drive belt.1 Replace drive belt.
2 Freeze-up (Auger will not turn).2 Turn off cylinder, wait for 15 minutes, then
3 Not tensioned properly.3 Adjust belt tension
1 Outside surface of rear auger seal is
lubricated.
2 Rear seal missing or damaged.2 Check or replace.
3 Seal o-ring missing, damaged or
installed incorrectly.
4 Worn or scratched auger shaft.4 Replace auger shaft.
1 Front door knobs are loose.1 Tighten knobs.
2 Spigot parts are not lubricated.2 See Section 3.
3 Chipped or worn spigot o-rings.3 Replace o-rings.
4 O-rings or spigot installed wrong.4 Remove spigot and check o-ring.
5 Inner spigot hole in front door nicked
or scratched.
1 A minimum of 3” of air space on the sides.
(See Section 2)
freeze down.
continues, call distributor for service.)
restart.
restart.
1 Clean lubricant from outside of rear seal and
thoroughly clean rear of freezing cylinder.
Lubricate inside of seal and reinstall.
3 Check or replace.
5 Replace front door.
Owner’s Manual #51365817 F231 Model Machines
Page 24
Owner’s Manual #51365818 F231 Model Machines
Page 25
6.1 DECALS AND LUBRICATION
Part Description Quantity
208135Brush - 4” X 8” X 16” (Barrel) 1
208380Brush - 1/4” X 3” X 14” 1
208401Brush - 1” X 3” X 10” 1
208467Brush - 3/8” X 1” X 5” 1
236059Card - Cleaning Instruction 1
C-1000-26CDecal - Made In USA 1
324065Decal - Water Inlet 1
324103Decal - Caution Rotating Shaft 1
324105Decal - Caution Electrical Shock 1
324106Decal - Caution Electrical Wiring Materials 1
324107Decal - Caution Hazardous Moving Parts 1
324125Decal - Danger Electric Shock Hazard 1
324141Decal - Caution Rotating Blades 1
324208Decal - Attention Refrigerant Leak Check 1
324393 Decal - Stoelting Swirl Logo (Orange Leaf Only) 324509Decal - Cleaning Instructions 1
324566Decal - Wired According To 1
324584Decal - Adequate Ventilation 3” 1
324594Decal - Attention Heat Sensitive 1
324686Decal - Danger Automatic Start 1
324803Decal - Domed Stoelting Logo (Large) (Header Panel) 1
324884Decal - Freshberry 324889Decal - Orange Leaf 324898Decal - Peachwave 324908Decal - Mix Low Light 1
324909Decal - USB Port 1
324910Decal - Air Defl ector 1324911Decal - Aspen Leaf 324916Decal - Josie’s 324941Decal - Sweet Frog 508053Lubricant - Total Blend (50 Packets) -
SECTION 6
REPLACEMENT PARTS
Owner’s Manual #51365819 F231 Model Machines
Page 26
6.2 AUGER SHAFT AND FACEPLATE PARTS
381804
381804
694255
694255
624678
624678
2177428
2177428
2187811
2187811
624614
624614
624664
624664
625133
625133
3170644
3170644
2187812
2187812
624598
624598
149003
149003
4157968
4157968
666786
666786
Part Description Quantity
149003Bushing - Front Auger Support 2
381804Auger Flight 10
482019Knob - Front Door (Black) 4
624598-5O-Ring - Outside Spigot - Black (5 Pack) 4
624614-5O-Ring - Top & Bottom Center Spigot - Black (5 Pack) 2
624664-5O-Ring - Middle Center Spigot - Black (5 Pack) 1
624678-5O-Ring - Rear Seal - Black (5 Pack) 2
625133O-Ring - Front Door - Red 2
666786Seal - Rear Auger - Black 2
694255Spring - Auger Flight 8
2177428Door w/Pins 1
2187811Spigot Body - Center 12187812Spigot Body - Outer 2
2205440Support - Front Auger 2
4157968 Auger Shaft 2
1. Scope:
Stoelting, A Vollrath Company (“Stoelting”) warrants to the first user (the “Buyer”) that the Stoelting-branded freezer
equipment (the “Equipment”) will be free from defects in materials and workmanship under normal use and proper
maintenance for the period listed below in the Warranty Period section. All warra nty periods begin on the date of original
install or one (1) year from the shipping date, whichever occurs first. This warranty is subject to all conditions,
exceptions, and limitations contained herein.
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, at Stoelting’s option,
one of the following: repair or replacement of the affected component at Stoelting’s plant in Kiel, Wisconsin, or refund
of the purchase price of the affected Equipment. Stoelting, through an Authorized Stoelting Provider, will
deinstall/reinstall the affected component from/into the equipment (“Labor”) for the period listed below in the Warranty
Period section. These obligations/remedies are subject to the conditions that Buyer (a) signs and returns to Stoelting,
upon installation, the Start-Up and Training Checklist 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. Warranty Period:
EquipmentPartPart Warranty PeriodLabor Warranty Period
Freezi ng Cy l i nders
Hoppers
Soft S erve & Shak eF i ve (5) Y earsTwelve (12) Months
Frozen Uncarbonated
Beverage
Cust ard & B atc hTwo (2) YearsTwelve (12) Months
Dipping Cabinet s &
Displ ay Cabinet s
Froz en B everage /
Granit a Dispens er
Aut oV endAll c om ponentsTwelve (12) Mont hsTwelve (12) Months
Crème W hi ppersTwo (2) YearsTwelve (12) Mont hs
All equi pm ent
Compressors
Drive Motors
Speed Reduc ers
Augers
Evaporator
Compressors
Drive Motors
Speed Reduc ers
Freezi ng Cy l i nders
Hoppers
Compressors
Drive Motors
Speed Reduc ers
Beaters
Auger S hafts
All component sTwelve (12) M ont hsTwelve (12) Months
Compress orsFive (5) Y ea rs
Elect ronic B oardThree (3) Years
All other com ponentsTwo (2) Years
Compressors
Motors
Condensers
All other com ponents
not s pecified above
Five (5) YearsTwelve (12) Mont hs
Twelve (12) M ont hs
Twelve (12) M ont hsTwelve (12) Months
Page 1 of 2 SFWARR-013 Revision 10
Page 30
DOMESTIC WARRANTY
(Including Mexico)
5. Conditions:
a) If the date of the original installation cannot be verifie d, these warranty periods begin on e (1) year from the shipping dat e. It is
the responsibility of the seller to disclose this information to the Buyer at the time of sale.
b) 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, faulty repair made by ot hers, use with parts or equipment not manuf actured or
supplied by Stoelting, any modification or alteration of any parts or equipment, or damage in trans it.
c) This warranty is valid only if the Equipment is installed and serviced by an Authorized Stoelting Provider and only if new, genuine
Stoelting parts are used.
d) The Equipment installation loc ation must have suitab le conditions as e xplai ned in the Stoelti ng operators manu al, specificat ion
sheet, and/or technical manual including but not limited to, ambient temperature, water supply parameters, and space
requirements.
e) The Authorized Stoelting Provider must return defective parts, at Stoelting’s discretion, for credit.
f) Any refrigerant other than that specified on the Equipment model identification nameplate voids this warranty.
6. Exceptions: This warranty does NOT cover any of the following
a) Costs associated with installation labor, disposal of equipment being replaced, and shippi ng costs of replacement parts or
Equipment.
b) Cleaning, maintenance or lubrication of the Equipment as outlined in the Stoelting operators manual.
c) 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 but limited to o-rings, auger flights, auger seals, auger support bushings, and drive
belts. All such parts are sold AS IS.
d) External components including but not limited to hoses, piping, or electrical equipment.
e) Labor and travel charges due to return trips or waiting if the Authorized Stoelting Provider is prev ented from promptly starting
service work upon arrival. This exception includes labor charges incurred for limited access facilities including, but not limited to,
government and military buildings, and airports.
f) Failure, damage, or repairs due to faulty installation, misapplication, abus e, lack of service, or improper service, unautho rized
alteration, improper operation as indicated in the Stoelting operators manual, including but not limited to failure to prop erly
assemble and/or clean, improper tool usage, or use of unapproved lubrication, or cleaning and sanitizing supplies.
g) Any costs associated with electricity, including utility increases, from any reason whatsoever.
h) Damage resulting from the use of refrigerant other than that specified on the Equipment model identification nameplate.
i) The use of this equi pment as a rental asset negates all warranties associated with the equipment.
j) Any special, indirect or consequential property or commercial damage of any nature whatsoever, if the jurisdiction allows this
exclusion.
k) Costs not covered by the Stoelting Travel Pay policy. Stoelting covers only the first trip travel which is a flat rate by mileage one-
way from the service company’s home location to the job site. The flat rate is calculated as follows:
o 0-50 Miles $85
o 51-110 Miles $127
o 111-160 Miles $165
o Over 160 Miles The maximum reimbursed by Stoelting is $165
Any travel costs not covered may be invoiced to the customer.
7. Limitations: 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, INCLUDING
AS EXAMPLES BUT NOT INTENDED TO BE LIMITED TO DOWNTIME, OVERHEAD, MATERIALS,
PERFORMANCE PENALTIES, LOST SALES, LOST PROFITS, PRODUCT LOSS, OR PROPERTY DAMAGES,
WHETHER FOR BREACH OF WARRANTY OR OTHER CONTRACT BREACH, NEGLIGENCE OR OTHER TORT,
OR ON ANY STRICT LIABILITY THEORY.
Page 2 of 2 SFWARR-013 Revision 10
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