Stoelting F431-18 Operators Manual
Model F431
OPERATORS MANUAL
Manual No. 513604 Rev.5
This manual provides basic information about the machine. Instructions and suggestions are
given covering its operation and care.
The illustrations and specifi cations are not binding in detail. We reserve the right to make
changes to the machine without notice, and without incurring any obligation to modify or provide new parts for machines built prior to date of change.
DO NOT ATTEMPT to operate the machine until instructions and safety precautions in this
manual are read completely and are thoroughly understood. If problems develop or questions
arise in connection with installation, operation, or servicing of the machine, contact Stoelting.
stoeltingfoodservice.com
Stoelting Foodservice Equipment
502 Highway 67
Kiel, WI 53042-1600
U.S.A.
Main Tel: 800.558.5807
Fax: 920.894.7029
Customer Service: 888.429.5920
Fax: 800.545.0662
Email: foodservice@stoelting.com
© 2014 PW Stoelting, LLC
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
Section 1 Introduction
1.1 Description ..................................................................................................1
1.2 Specifi cations .............................................................................................2
Section 2 Installation Instructions
2.1 Safety Precautions .....................................................................................3
2.2 Shipment & Transit .....................................................................................4
2.3 Machine Installation ....................................................................................4
2.4 Installing Permanent Wiring ........................................................................4
2.5 Mix Pump ....................................................................................................5
Section 3 Initial Set-Up and Operation
3.1 Safety Precautions .....................................................................................9
3.2 Operating Controls and Indicators ..............................................................9
3.3 Important Cleaning and Sanitizing Information ...........................................11
3.4 Disassembly of Machine Parts ...................................................................12
3.5 Cleaning Disassembled Parts ....................................................................13
3.6 Sanitizing Machine Parts ............................................................................14
3.7 Cleaning the Machine .................................................................................14
3.8 Assembling the Machine ............................................................................14
3.9 Sanitizing Assembled Machine ...................................................................15
3.10 Initial Freeze Down and Operation .............................................................16
3.11 Normal Freeze Down and Operation ..........................................................18
3.12 Mix Information ...........................................................................................18
3.13 Operation of Mix Pump ...............................................................................19
3.14 Mix Pump Cleaning ....................................................................................19
3.15 Disassembly and Inspection of Removable Parts ......................................19
Section Description Page
Section 4 Maintenance and Adjustments
4.1 Machine Adjustment ...................................................................................21
4.2 Product Consistency Adjustment ................................................................21
4.3 Locking Out Control Panel ..........................................................................21
4.4 Obtaining Readings and Modifying Settings (Service Personnel Only) ......21
4.5 Readings (Service Personnel Only) ...........................................................22
4.6 Adjustments (Service Personnel Only) .......................................................23
4.7 Other Settings (Service Personnel Only) ....................................................23
4.8 Overrun Adjustment ....................................................................................24
4.9 Mix Pump Hose Reposition ........................................................................25
4.10 Mix Pump Hose Replacement ....................................................................25
4.11 Cab Temperature Adjustment .....................................................................26
4.12 Drive Belt Tension Adjustment ....................................................................26
4.13 Condenser Cleaning (Air Cooled Machines) ..............................................27
4.14 Preventative Maintenance ..........................................................................27
4.15 Extended Storage .......................................................................................27
Section 5 Troubleshooting
5.1 Error Codes ................................................................................................29
5.2 Troubleshooting - Error Codes ...................................................................29
5.3 Troubleshooting - Machine .........................................................................31
5.4 Troubleshooting - Mix Pump .......................................................................32
Section 6 Replacement Parts
6.1 Decals and Miscellaneous Parts ................................................................35
6.2 Front Door and Auger Parts ........................................................................36
6.3 Cab Tubing Assembly .................................................................................37
SECTION 1
INTRODUCTION
1.1 DESCRIPTION
The Stoelting F431 fl oor model machine is pressure fed.
The machine is equipped with fully automatic controls to
provide a uniform product. The machine 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 personnel and
operators in the installation, operation and maintenance
of the Stoelting Model F431 pressure machine.
Figure 1-1 Model F431 Machine
Figure 1-2 Machine Specifi cations
1
1.2 SPECIFICATIONS
Model F431
Dimensions Machine with crate
width 19-1/8’’ (48,6 cm) 27’’ (68,6 cm)
height 67-7/8’’ (172,4 cm) 78’’ (198,1 cm)
depth 37-3/4’’ (95,9 cm) 48’’ (121,9 cm)
Weight 500 lbs (226,7 kg) 650 lbs (294,8 kg)
Electrical 1 Phase, 208-240 VAC, 60Hz
circuit ampacity
overcurrent protection
device
International Option 1 Phase, 220-240 VAC, 50Hz
Compressor 11,000 Btu/hr Scroll™ Compressor
Drive Motor Two - 3/4 hp
Air Flow Air cooled units require 3” (7,6 cm) air space on both sides, 6” back.
Plumbing Fittings Water cooled units require 1/2” N.P.T. water and drain fi ttings.
Hopper Volume Two - 5.5 gallons (20,82 liters)
Freezing Cylinder
Volume
Two - 0.85 gallon (3,22 liters)
24A minimum
30A maximum
2
SECTION 2
INSTALLATION INSTRUCTIONS
2.1 SAFETY PRECAUTIONS
Do not attempt to operate the machine until the safety
precautions and operating instructions in the manual are
read completely and are thoroughly understood.
Take notice of all warning labels on the machine (see
Figure 2-1). The labels have been put there to help you
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
have not been painted over, rubbed off, fallen off, and
can be recognized as warning labels.
If you are in need of replacement labels, indicate the
part number, type of label, location of label, and quantity
required along with your name and address and mail to:
Stoelting, LLC
Commercial Products
502 Hwy. 67
Kiel, WI 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 machine must be checked for any damage which may
have occurred during fi nal transit.
Figure 2-1 Warning Label Locations
3
With the method of packaging used, the equipment 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 ten days and request inspection. The
customer must place claim for damage and/or shortages
in shipment with the carrier. Stoelting, LLC cannot make
any claims against the carrier.
2.3 MACHINE INSTALLATION
Installation of the machine involves moving the machine
close to its permanent location, removing all crating, setting in place, assembling parts, and cleaning.
A. Uncrate the machine.
WARNING
Installation must be performed by a qualifi ed elec-
trician/refrigeration specialist. Incorrect installation
may cause personal injury, severe damage to the
machine and will void factory warranties.
B. Install the four casters. Turn the threaded end into
the machine until zero threads are showing. To
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 machine barrel and to insure correct overrun.
If permanent wiring is required by local codes, the following procedure must be performed:
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.
WARNING
Hazardous voltage
High voltage will shock, burn or cause death. Turn
off and lock out main power disconnect before installing wiring. Do not operate machine with cabinet
panels removed.
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.
D. Check the auger shaft rotation by placing the Main
Freezer Power Switch in the ON position, placing
both Freezing Cylinder OFF/ON switches in the
ON position and pressing the CLEAN button on
each of the control panels. Auger shaft rotation
is clockwise as viewed through the clear plastic
front door (see Figure 2-2).
E. Press the CLEAN button to stop the augers.
2.5 MIX PUMP
A. MIX PUMP HOSE INSTALLATION
Follow the steps below to install the mix pump hose in
the cabinet part of the machine.
D. Machines with air cooled condensers require a
minimum of 3" (7,5cm) of space on all sides and
10" (25cm) at the top for proper circulation. A
minimum of 6" (15cm) side clearance is required
in high ambient conditions (>98ºF).
E. Soft serve machines with water cooled condensers
require 1/2" NPT supply and drain fi ttings.
2.4 INSTALLING PERMANENT WIRING
CAUTION
Risk of product damage
Air cooled condenser requires proper ventilation.
Failure to provide adequate ventilation will void factory warranties.
Figure 2-2 Auger Rotation
4
6" (15cm)
Figure 2-3 Mix Hose Installation
1. Turn pump on.
2. Feed one end of mix pump hose into the entering
or pickup hose side (left) of black cover.
NOTE
Feed the tube into the clamp so the natural curve of
the tube is towards the outside of the black cover.
This prevents the hose from looping around the
black cover twice.
3. Gently push the hose into the black cover until it
begins to feed.
4. Allow the hose to feed itself through the pump
until 6" (15cm) remains on the entering side.
5. Turn pump off.
6. Connect mix pump hose to the elbow fi tting
(located on the left side of the mix line manifold)
using small hose clamp. Be careful not to twist
the mix hose.
7. Turn pump on.
8. Allow remaining 6" (15cm) of tubing to feed through
pump until hose adapter prevents further feeding.
9. Turn pump off.
10. Connect free end of mix pump hose to 3-way Tee
as shown in Figure 2-4. When all connections are
complete the 3- way Tee must be lower than the
black pump housing.
CAUTION
Risk of product damage
Air/mix Tee must remain below the black cover/
clamp. If Tee is above the pump, mix will drain to
the air compressor resulting in pump damage.
B. MIX PICKUP HOSE INSTALLATION
The F431 machine may be connected to standard mix
containers or prepacked mix bags. One, 5 gallon mix bag
may be connected to each freezing cylinder or two 2-1/2
gallon bags may be connected on each side. Follow the
instructions below that match your confi guration.
When Using One Mix Container Per Side:
1. Connect a 2" (5cm) length of 3/8" (9,5mm)
ID plastic food grade tubing to the mix pickup
assembly. Secure with hose clamps. Then
place assembly through hole in cover and install
retaining clip (see Figure 2-4 and 2-5).
2. Connect the free end of tubing to the mix check
valve. Observe direction of check valve fl ow arrow.
Secure with hose clamp. Connect 24" (61cm)
length of 3/8" (9,5mm) ID plastic food grade tubing
to free end of check valve and secure with hose
clamp.
5
Figure 2-4 Mix Pump Connections for Standard Mix Container
3. Connect elbow fi tting to free end of tubing. Connect
opposite end of elbow to 1/4" ID tan tubing on the
left side of pump head. Secure with hose clamps
(see Figure 2-3 and 2-4).
When Using Bag Connection System (BCS) with T wo
Bags Per Side (optional kit #2183189):
1. Connect 3/8" (9,5mm) ID plastic food grade tubing
to a bag adapter. Secure with hose clamps. This
bag adapter will connect to the bag nearest the
front of the machine.
2. Slide the hose clip over free end of 3/8" (9,5mm)
ID plastic food grade tubing. Attach free end of
tubing to a manifold adapter. Secure with large
hose clamp or equivalent. Push the manifold
adapter into the left port of the mix inlet manifold
and secure with retaining clip. (See Figure 2-7).
3. Connect 3/8" (9,5mm) ID plastic food grade tubing
to a bag adapter. Secure with hose clamps. This
bag adapter will connect to the bag nearest the
back of the machine.
Figure 2-5 Connecting Mix Pick-up Assembly
6
3-way Tee
Low Mix
Indicator
Adjustment
Knobs
Figure 2-6 Connecting Pump Hose to BCS Manifold
Figure 2-7 Completed BCS Hose Assembly
4. Attach free end of tubing to a manifold adapter.
Secure with large hose clamp or equivalent. Push
the manifold adapter into the right port of the mix
inlet manifold and secure with retaining clip. (See
Figure 2-7).
5. Place two mix bags into each mix container as
shown in Figure 2-8 (left mix container shows
two bag confi guration).
6. Connect the bag adapter attached to the left side
of the manifold to the mix bag in the front of the
mix container (nearest the cabinet door). Connect
the bag adapter attached to the right side of the
manifold to the mix bag in the back of the mix
container (see Figure 2-8).
When Using Bag Connection System (BCS) with One
Bag Per Side (optional kit):
1. Connect 3/8"(9,5mm) ID plastic food grade tubing
to a bag adapter. Secure with hose clamps.
2. Connect free end of 3/8" (9,5mm) ID plastic
food grade tubing to mix check valve. Observe
direction of check valve fl ow arrow. Secure with
hose clamp. Connect 3/8" (9,5mm) ID plastic
food grade tubing to free end of check valve and
secure with hose clamp.
3. Connect elbow fi tting to free end of tubing. Connect
opposite end of elbow to 1/4" ID tan tubing on the
left side of pump head. Secure with hose clamps
(see Figure 2-3 and 2-4).
4. Place one mix bag into each mix container as
shown in Figure 2-8 (right mix container shows
one bag confi guration).
5. Connect the bag adapter to the mix bag. (See
Figure 2-8).
Figure 2-8 Connecting BCS Mix Bags (two bag
connection on left, one bag connection on right)
7
When Using Two Mix Containers or Bag Connection
Systems (BCS) on one Side (optional kit #2183189):
1. The F431 can be confi gured to operate with only
one freezing cylinder turned on. This may be done if
only one fl avor is being dispensed during slow times.
In this case, running only one freezing cylinder will
help minimize product breakdown, while reducing
mix container fi lling or mix bag replacement.
2. Connect two mix containers or two mix bags as
described above, but connect both containers to the
mix line manifold of the freezing cylinder you will be
using.
C. MIX LOW LEVEL INDICATOR ADJUSTMENT
The sensitivity of the “Mix Low” indication that displays on
the control panel can be adjusted to operator preference. If
more advanced notice of low mix is required, simply loosen
the black adjustment knobs located on the sensor brackets
at the back of the machine cabinet, and slide the bracket
upwards. If the “Mix Low” message appears while there is
still suffi cient mix in the container, slide the bracket down-
ward. Be sure to tighten the adjustment knobs after properly
positioning the sensor (see Figure 2-6).
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