Vollrath E131YG2 Service Manual

E131 YG2 / F131 YG2

OWNER’S MANUAL

Manual No. 513649 Nov, 2009 Rev.0

Owner’s Manual

For E131YG2 and F131YG2

Stoelting Counter Model Gravity Machine

This manual provides basic information about the machine. Instructions and suggestions are given
covering its operation and care.

The illustrations and specifications are not binding in detail. We reserve the right to make
changes to the machine without notice, and without incurring any obligation to modify or provide
new parts for freezers built prior to date of change.

DO NOT A TTEMPT 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 the company at the
following location:

STOELTING Ph: 800-558-5807
502 Hwy. 67
Kiel, WI 53042 Fax: [phone]

© 2009 Stoelting, LLC, All Rights Reserved

A Few Words About Safety

Safety Information

Read and understand the entire manual before
operating or maintaining Stoelting equipment.

This Owner's Manual provides the operator with
information for the safe operation and maintenance of
Stoelting equipment. As with any machine, there are
hazards associated with their operation. For this
reason safety is emphasized throughout the manual.
To highlight specific safety information, the following
safety definitions are provided to assist the reader.

The purpose of safety symbols is to attract your
attention to possible dangers. The safety symbols,
and their explanations, deserve your careful attention
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions or
warnings they give are not substitutes for proper
accident prevention measures.

If you need to replace a part, use genuine S toelting
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.

NOTICE

The signal word “NOTICE” indicates information or
procedures that relate directly or indirectly to the
safety or personnel or equipment/property .

TABLE OF

CONTENTS

Section Description Page

1 Description and Specifications

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

1.2 Specifications.............................................................................................1

1.3 Modes of Normal Operation ........................................................................4

1.4 Mix Level Indicators....................................................................................6

1.5 Hopper Refrigeration ...................................................................................6

1.7 Motor Profile Cutout Compensation ............................................................6

2 Installation Instructions

2.1 Safety Precautions.....................................................................................3

2.2 Shipment and Transit .................................................................................3

2.3 Machine Installation....................................................................................3

3 Initial Set-Up and Operation

3.1 Operator’s Safety Precautions....................................................................5

3.2 Operating Controls and Indicators...............................................................5

3.3 Important Information Regarding Cleaning and Sanitizing............................7

3.4 Disassembly of Machine Parts ...................................................................8

3.5 Cleaning Disassembled Parts.....................................................................9

3.6 Sanitizing Machine Parts............................................................................9

3.7 Cleaning the Machine.................................................................................9

3.8 Assembling the Machine ............................................................................10

3.9 Sanitizing ...................................................................................................10

3.10 Initial Freeze Down and Operation ..............................................................11

3.11 Normal Freeze Down and Operation ...........................................................12

3.12 Mix Information...........................................................................................12

Section Description Page

4 Maintenance and Adjustments

4.1 Machine Adjustment...................................................................................13

4.2 Product Consistency Adjustment ...............................................................13

4.3 Locking the Control Panel...........................................................................13

4.4 Obtaining Readings and Modifying Settings................................................13

4.5 Readings ....................................................................................................15

4.6 Adjustments...............................................................................................16

4.7 Other Settings............................................................................................16

4.8 Drive Belt Tension Adjustment....................................................................17

4.9 Condenser Cleaning ...................................................................................17

4.10 Preventative Maintenance ...........................................................................18

4.11 Extended Storage.......................................................................................18

5 Troubleshooting

5.1 Error Codes ................................................................................................19

5.2 Troubleshooting ..........................................................................................19

5.3 Troubleshooting - Machine..........................................................................21

6 Replacement Parts

6.1 Decals & Lubrication ..................................................................................23

6.2 Auger Shaft and Faceplate Parts................................................................24

SECTION 1

INTRODUCTION

1.1 DESCRIPTION

The Stoelting E131YG2 and F131YG2 counter machines
are gravity fed. The machines are equipped with fully
automatic controls to provide a uniform product. They are
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 qualified service person­nel and operators in the installation, operation and mainte­nance of the Stoelting E131YG2 and F131YG2 gravity
machine.

Figure 1-1 E131YG2 / F131YG2 Machine

1.2 SPECIFICATIONS

Figure 1-2 Specification

1

1.2 SPECIFICATIONS

Dimensions

width

height

depth

Weight

Electrical

ru nnin g am ps

con n ection type

In t e r national Option

Compressor

Drive M ot or

Air Flow

Plumbing Fit t i ngs

Hopper Volum e

Freezing Cylinder

Volume

Production

Capacity

Model E131YG2

Machine

22'' (55,9 cm)
34-3/ 4' ' (88,3 cm)
28-1/ 2' ' (72,4 cm)

1 Phase, 208-230 VA C, 60Hz

approximately 12A

NEM A6-20P power cor d pro vided

1 Phas e, 220- 240 VAC, 50H z

8,600 Btu/ h r ( R -404A)

Two - 3/4 hp

Air cooled un it s r equire 3" (7, 6 cm ) air sp ace on both sides

Water co ol ed un it s r equire 3/8" N .P.T . water and dr ain f it t in g s.

Tw o - 3 gal l o n (11, 35 l it er s)

Two - 0.5 gallon (2 quart ) , 1,89 liters

5 GPH ( 18, 93 liters) each Fre ezing Cylinder

8.5 G PH ( 32, 18 liter s) bot h Freezin g Cy linder s

with crat e

28'' (71,1 cm)

40-1/ 4' ' (102,2 cm)

35-1/ 4'' (8 9, 5 cm )

450 lbs ( 204,1 kg)370 l bs (167,8 kg)

Dimensions

width

height

depth

Weight

Electrical

ru nnin g am ps

con n ection type

In t e r national Option

Compressor

Drive M ot or

Air Flow

Plumbing Fit t i ngs

Hopper Volum e

Freezing Cylinder

Volume

Production

Capacity

Model F131YG2

Machine

22'' (55,9 cm)
34-3/ 4' ' (88,3 cm)
28-1/ 2' ' (72,4 cm)

1 Phase, 208-230 VA C, 60Hz

approximately 12A

NEM A6-20P power cor d pro vided

1 Phas e, 220- 240 VAC, 50H z

12,000 Btu/ hr ( R-404A)

Two - 3/4 hp

Air cooled un it s r equire 3" (7, 6 cm ) air sp ace on both sides

Water co ol ed un it s r equire 3/8" N .P.T . water and dr ain f it t in g s.

Tw o - 3 gal l o n (11, 35 l it er s)

Two - 0.8 5 gal lon (3 . 4 quart ) , 3,22 lit ers

8 GPH (30,29 liter s) each Freez in g Cy l in der

11.5 G PH ( 43,53 lit er s) bot h Freezin g Cylin d er s

with crat e

28'' (71,1 cm)

40-1/ 4' ' (102,2 cm)

35-1/ 4'' (8 9, 5 cm )

470 lbs ( 213,1 kg)385 l bs (174,6 kg)

2

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

A TTENTION: 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 final 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.

2.3 MACHINE INSTALLATION

WARNING

Installation must be completed by a qualified
electrician/refrigeration specialist.

Incorrect installation may cause personal injury , se­vere damage to the machine and will void factory
warranty.

Figure 2-1 Space and Ventilation Requirements

Place a bubble level on top of the machine at each
corner to check for level condition. If adjustment
is necessary, level the machine by turning the
bottom part of each leg in or out.

C. The machine has a base gasket that must be

installed. Separate the gasket and install it with
the seam to the back. Make sure the angled side
of the gasket is facing up.

D. Correct ventilation is required. The right side of the

machine is the air intake and left side is the
discharge. Both sides must have 3" clearance.

CAUTION

Failure to provide adequate ventilation will void war­ranty.

E. Place the Main Freezer Power Off/On switch in the

OFF position.

F. Connect the power cord to the proper power

supply. The plug connected to the machine is a
NEMA 6-20P. Check the nameplate on your
machine for proper supply. The unit must be
connected to a properly grounded receptacle.
The electrical cord furnished as part of the machine
has a three prong grounding type plug. 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
circumvent the grounding requirement.

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.
B. Accurate leveling is necessary for correct drainage

of machine barrel and to insure correct overrun.

WARNING

Do not alter or deform electrical plug in any way.
Altering the plug to fit into an outlet of different con­figuration may cause fire, risk of electrical shock,
product damage and will void warranty .

3

4

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 fitting 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.

Main Freezer

Power Off/On

Freezing Cylinder

Off/On Switch

Dispense Rate

Adjustor

IntelliT ec Control

(See Figure 3-2)

Figure 3-1 Machine Controls

5

A. MAIN FREEZER POWER SWITCH

The Main Freezer Power switch is a two position rocker
switch that supplies power to the IntelliTec control, freez­ing cylinder circuits and hopper refrigeration system. When
the switch is placed in the ON position, the hopper refrig­eration system will run until the preset temperature is
reached; then it will cycle ON and OFF to maintain that
temperature.

B. FREEZING CYLINDER OFF/ON SWITCH

The Freezing Cylinder OFF/ON switch is a two position
toggle switch used to supply power to the freezing cylinder
control circuit. When the switch is in the OFF position, the
freezing cylinder’s refrigeration system and auger will not
operate. When the switch is in the ON position, the
machine will be operational.

C. SPIGOT SWITCH

The spigot switch is mounted to the spigot cam assembly
behind the header panel. When the spigot is opened to
dispense product, the spigot switch opens and the "Serve
Mode" begins.

D. 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 will decrease the dispense
rate.

E. PUSH TO FREEZE BUTTON

The PUSH TO FREEZE button is a membrane or snap
switch used to initiate "Serve Mode".

NOTE

After the PUSH TO FREEZE button is pressed, the
drive motor starts. Af ter a 3-second delay , the com­pressor will start.

F. LEDS

The membrane switch (touchpad) features two lights: a
green LED and an amber LED. The green LED is lit during
"Serve Mode". During freeze down, it is not lit. When
product consistency approaches 75% in the freezing
cylinder, the green LED flashes. The amber LED is on
during all other modes. Both LEDs alternatively flash if an
error occurs or if the freezing cylinder is off.

G. CLEAN BUTTON

The CLEAN button is a membrane, or snap switch. When
the button is pressed, the freezing cycle stops and the
drive motor will start. A CLEAN message will display on the
LCD screen along with a 5-minute countdown timer. To
exit the CLEAN mode, turn the Freezing Cylinder OFF/ON
switch to the OFF position or press the CLEAN button
again. If the machine is left in CLEAN for more than 20
minutes, an error code (E4) will be displayed on the display
panel. Place the Freezing Cylinder OFF/ON switch in the
OFF position and back in the ON position to clear this
error.

Push to Freeze

Green LED

Amber LED
Clean Button

SEL Button

SET Button

Left Arrow Button

Up Arrow Button

Figure 3-2 IntelliT ec Control

H. DRIVE MOTOR OVERLOAD

The internal drive motor overload will trip if the drive motor is
overloaded. It will reset after approximately 10-12 minutes.
If the drive motor continues to trip, refer to Troubleshooting
in Section 7.

I. MIX LOW LIGHT INDICATOR

A MIX LOW message will appear on the LCD display to
alert the operator of a low mix condition. The message will
display when there is approximately one gallon of mix left
in the hopper. When the MIX LOW message is displayed,
refill the hopper immediately.

L. MENU NAVIGATION BUTTONS

The Menu Navigation Buttons allow the user to display
information regarding the machine’s status of operation as
well as adjust product consistency (Fig. 3-2).

Selection Button (SEL) The SEL button is used
in combination with the up arrow button to enter
into the settings of the IntelliTec control. This
button is also used to navigate through the control
settings menu.

Set Button (SET) The SET button is used to save
a change made to the product consistency setting.
It is also used to save changes when modifying
control settings.

Left Arrow Button (⇐) If the left arrow button is
pressed for 5 seconds, the display will remain lit.
To turn the light off, press the left arrow button for
5 seconds. The left arrow button is used primarily
to navigate through the control settings.

Up Arrow Button (⇑) After pressing the SET
button, the up arrow button will change the value
of the product consistency setting. This button is
also used to navigate through the control settings.

6

3.3 IMPORTANT INFORMATION REGARDING CLEANING

AND SANITIZING

Soft serve machines require special consideration when it
comes to food safety and proper cleaning and sanitizing.

The following information 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 buildup.

MILKSTONE – Is a white/gray film that forms on equip­ment and utensils that are exposed to 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.

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
freezing cylinder 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 most 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. 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 a FDA-approved sanitizing
solution is run through the machine to kill bacteria.
The machine is then ready for food preparation.

As a recommended cleaner and sanitizer for your frozen
dessert machine, STERA-SHEEN has proven to be one of
the best daily maintenance products for:

· CLEANING – Thorough removal of all solids
including butterfat and milk fat.

· MILKSTONE REMOVAL – Complete removal of
milkstone.

· SANITIZING – FDA-approved no rinse sanitizer
for food contact surfaces.

ADDITIONAL INFORMATION

THE USE OF DELIMERS
A delimer is a strong acid that has the ability to dissolve

milkstone. This type of chemical may become necessary
once high levels of milkstone have developed. While
these products are very effective for removing HIGH
levels of milkstone, they are not ideal for two reasons:

1. PRODUCT SAFETY – Strong acids are dangerous
chemicals. Carefully follow safety instructions
provided with delimer products.

7

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 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.

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.

Two main factors contribute to falling chlorine concentra­tions in a sanitizing solution.

1. PRODUCT USE – As the chlorine in the solution
is being used, chlorine concentrations fall.

2. TIME – As time passes, small amounts of chlorine
“evaporate” from the solution. (That is why you
can smell it.)

Sanitizing solutions should not be allowed to fall below 100
ppm chlorine. New solutions should be mixed once old
solutions become ineffective.

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
flights on a regular basis (Fig. 3-3) and replace as needed.
Frequency of cleaning must comply with the local health
regulations.

Wear Line

Figure 3-3 Auger Flight Wear

To disassemble the machine, refer to the following steps:

A. DISASSEMBLY OF FRONT DOOR

1. Turn the Main Freezer Power Off/On switch to the
OFF position.

2. Remove the knobs on the front door.

3. Remove the front door by pulling it off the studs.

4. Remove the spigot through the bottom of the front
door.

5. Remove all o-rings from parts by first wiping off
the lubrication 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.

CAUTION

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

3.4 DISASSEMBLY OF MACHINE PARTS

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.

Before using the machine for the first 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 codes.

Figure 3-4 Removing O-Ring

8

B. DISASSEMBLY OF AUGER

1. Remove the front auger support and bushing.

2. Remove the auger assembly from the machine.
Pull the auger out of the machine barrel slowly. As
the auger is being pulled out, carefully remove
each of the plastic flights with springs.

3. Keep the rear of the auger tipped up once it is clear
of the freezing cylinder to prevent the rear seal
assembly from dropping.

4. Wipe the spline lubricant off of the hex end of the
auger with a paper towel. Remove the rear seal
assembly (Fig. 3-5).

5. Unscrew the springs from the auger flights.

Figure 3-6 Clean Hoppers

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

freezing cylinder with the 90° to 110°F (32° to
43°C) detergent water.

3.6 SANITIZING MACHINE PARTS

A. Use Stera-Sheen or equivalent sanitizing solution

mixed according to manufacturer’s instructions to
provide a 100 parts per million strength solution.
Mix sanitizer in quantities of no less than 2 gallons
of 90° to 110°F (32°C to 43°C) water. Any sanitizer
must be used only in accordance with the
manufacturer’s instructions.

B. Place all parts in the sanitizing solution for 5

minutes, then remove and let air dry completely
before assembling in machine.

Figure 3-5 Rear Seal Assembly

3.5 CLEANING DISASSEMBLED PARTS

Disassembled machine parts require complete cleaning,
sanitizing and air drying before assembling. Local and
state health codes will dictate the procedure required.
Some state health codes require a four sink process (pre­wash, 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. Prepare detergent water by mixing 2 oz. of

Palmolive detergent or equivalent in 2 gallons of
90° to 110°F (32° to 43°C) water. Place all parts
in the detergent solution and clean with provided
brushes.

B. Rinse all parts with clean 90° to 110°F (32° to

43°C) water.

C. Wash the hopper and freezing cylinder with the

90° to 110°F (32° to 43°C) detergent water and
brushes provided (Refer to Figure 3-6).

3.7 CLEANING THE MACHINE

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 110°F
(32°C to 43°C) detergent water and wipe dry.

Do not use highly abrasive materials, as they will mar the
finish. A mild alkaline cleaner is recommended. Use a soft
cloth or sponge to apply the cleaner. For best results, wipe
with the grain of the steel.

A. Clean the rear seal surface from inside of the

freezing cylinder.

B. Using sanitizing solution and the large barrel

brush provided, sanitize the freezing cylinder by
dipping the brush in the sanitizing solution and
brushing the inside of the freezing cylinder.

C. Remove the drip tray by pulling from the front

panel. Clean and replace the drip tray.

9

3.8 ASSEMBLING MACHINE

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

NOTICE

Petrol-Gel sanitary lubricant or equivalent must be
used when lubrication of machine parts is specified.

NOTICE

The United States Department of Agriculture and
the Food and Drug Administration require that lu­bricants used on food processing equipment be
certified for this use. Use lubricants only in accor­dance with the manufacturer’s instructions.

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

lubrication. Then apply a thin film of sanitary
lubricant to exposed surfaces of the o-rings.

B. Lubricate the rear seal area on the auger shaft

with a thin layer of sanitary lubricant. Install the
rear seal o-ring. Lubricate the outside of the rear
seal o-ring with sanitary lubricant.

C. Install the stainless steel rear seal adapter into the

rear seal dry (without lubricant). Lubricate the
inside metal surface of the rear seal adapter and
install it onto the auger shaft. DO NOT lubricate the
outside of the rear auger seal (Fig. 3-6).

H. Apply a thin layer of sanitary lubricant to the inside

and outside of the auger support bushing. Install
the bushing onto the auger support and install the
auger support into the front of the auger. Rotate
the auger support so that one leg of the support
points straight up.

I. Apply a thin layer of sanitary lubricant to the o-

rings on the spigot body and install the spigot body
through the bottom of the front door.

K. Apply a thin film of sanitary lubricant to the door

seal o-ring and fit it into the groove on the rear of
the front door.

M. Place the front door assembly on the mounting

studs and the push front door against the machine
carefully.

N. Secure the front door to the machine by placing the

knobs on the studs and tightening until finger tight.
Do not overtighten. A proper o-ring seal can be
observed through the transparent front door.

3.9 SANITIZING

Sanitizing must be done after the machine is clean and just
before the machine is filled with mix. Sanitizing the night
before is not effective. 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 certified for this use.

Figure 3-6 Lubricate Rear Seal

D. Lubricate the hex drive end of the auger with a small

amount of spline lubricant. A small container of
spline lubricant is shipped with the machine.

E. Screw the springs onto the studs in the plastic

flights. The springs must be screwed into the
flights completely to provide proper compression.

F. Install the two plastic flights onto the rear of the

auger and insert it part way into the freezing
cylinder.

G. Install the remaining plastic flights, push the auger

into the freezing cylinder and rotate slowly until the
auger engages the drive shaft.

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
according to manufacturer’s instructions to provide a 100
parts per million strength solution. Mix sanitizer in quanti­ties of no less than 2 gallons of 90°F to 110°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.

CAUTION

Risk of Product Damage

Avoid prolonged contact of sanitizer with machine
parts. Sanitizer may cause corrosion of stainless
steel parts if there is prolonged contact.

A. Prepare 2 gallons of sanitizing solution following

the manufacturer’s instructions.
B. Install the mix inlet regulator into the hopper.
C. Pour the sanitizing solution into the hopper.

10

D. Place the Main Power OFF/ON and Freezing

Cylinder OFF/ON switches in the ON position.
Press the CLEAN button.

E. Check for leaks.

1. Check for leaks at the front door seals.

2. Check the drain tray located under the front dor
for leaks coming from the rear of the rear auger
seal.

F. Using a sanitized soft bristle brush (or equivalent)

dipped in sanitizing solution, clean the hopper
sides, mix inlet regulator and underside of the
hopper cover.

G. After five minutes, open the spigot to expel

sanitizing solution. Drain all of the solution from
the machine.

H. When the solution has drained, press the CLEAN

button to stop the auger and place the Main Power
OFF/ON and Freezing Cylinder OFF/ON switches
in the OFF position. Allow the freezing cylinder to
drain completely.

The machine is now sanitized and ready for adding mix.

3.10 INITIAL FREEZE DOWN AND OPERATION

Every Stoelting soft serve machine needs to be set on site.
The following adjustment will provide optimal product con-

sistency while prolonging product life.

NOTE

The machine is designed for correct operation in
ambient temperatures between 50°F and 110°F.
Temperatures out of that range may cause refrig­eration problems and product quality issues.

A. ADDING MIX

1. Sanitize the machine immediately before use.

2. Make sure the Freezing Cylinder OFF/ON switch
is in the OFF position.

3. Fill the hopper with at least 2.5 gallons of mix.

4. Place a container under the spigot and open the
spigot to allow the mix to flush out about 8 ounces
(0.23 liters) of sanitizing solution and liquid mix.
Close the spigot.

B. PREPARING THE INTELLITEC CONTROL

5. On the IntelliTec control, press and hold the SEL
button for 8 seconds. While still holding the SEL
button, press the up arrow (⇑) button. The LCD
will read “DISPLAY”.

6. Press the left arrow (⇐) button once. The display
will read “BASIC”.

7. Press the up arrow (⇑) button once. The display
will read “CutOut amps”.

8. Press the SET button. A cursor will start blinking
under the far right digit.

9. Change the value to 8.0. Press the left arrow (⇐)
button to move the cursor. Press the up arrow (⇑)
button to increase the digit. When a digit reaches
9, pressing the up arrow (⇑) button again will
change the value to 0.

10. After entering 8.0, press SET to save this value.
The LCD will read “CutOut Set -- OK”.

11. Press the SEL button. The LCD will read “CutOut
amps 8.0”.

12. Press the SEL button twice. The LCD will read
“DISPLAY”.

13. Press the up arrow (⇑) button to navigate to the
“°F” and “amps” readings.

C. INITIAL FREEZE DOWN

14. Press the PUSH TO FREEZE button.

NOTE

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

15. As the product freezes, the “amps” value on the
display will increase. When it reaches 2.8A, open
the spigot, take a 6-8 ounce sample and measure
the temperature. For most soft serve mixes, the
desired temperature is between 19.0°F and 19.5°F.

16. Draw samples at every increase of 0.2A until
reaching the desired consistency and temperature.

NOTE

Show the sample to the customer and make sure it
meets their required consistency and temperature.

17. Record the “amps” value.

18. Place the Freezing Cylinder OFF/ON switch in the
OFF position.

D. ADJUSTING THE INTELLITEC CONTROL

19. Press the SEL button. The display will read
“DISPLAY”.

20. Press the left arrow (⇐) button once. The display
will read “BASIC”.

21. Press the up arrow (⇑) button once. The display
will read “CutOut amps”.

22. Change the value to the recorded value by pressing
the SET button. A cursor will start blinking under
the far right digit.

23. Press the left arrow (⇐) button to move the
cursor. Press the up arrow (⇑) button to increase
the digit. When a digit reaches 9, pressing the up
arrow (⇑) button again will change the value to 0.

24. Press the SET button to save the value. The LCD
will read “CutOut Set -- OK”.

25. Press the SEL button. The LCD will read “CutOut
amps” along with the programmed value from the
previous step.

11

26. Press the SEL button three times. The LCD will

read “EXITMENU”.

27. Press the up arrow (⇑) button to exit the menu.

28. Adjustment to the control is completed.

E. SERVING PRODUCT

29. Place the Freezing Cylinder OFF/ON switch in the
ON position.

30. Press the PUSH TO FREEZE button.

31. When the product is at 75% consistency, the
display will read “SERVE”.

32. For normal dispensing, move the spigot handle
fully open.

33. 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
will decrease the dispense rate.

34. Do not operate the machine when the MIX LOW
message is displayed. Refill hopper immediately.

NOTE

The machine has a standby and sleep mode. After
a preset number of freezing cycles, it will enter the
standby mode (followed by sleep mode) and remain
there until someone draws product or presses the
PUSH TO FREEZE button. In the sleep mode, the
machine will keep 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.

3.11 NORMAL FREEZE DOWN AND

OPERATION

The following section contains the recommended operat­ing procedures for the safe operation of the machine.

A. Sanitize immediately before use.
B. Make sure the Freezing Cylinder Off/On switch is

in the OFF position.

C. Fill the hopper with at least 2.5 gallons of mix.
D. Place a container under the spigot and open the

spigot to allow the mix to flush out about 8 ounces
(0.23 liters) of sanitizing solution and liquid mix.

E. Place the Freezing Cylinder OFF/ON switch in the

ON position.

F. Press the PUSH TO FREEZE button.

NOTE

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

G. When the product is at 75% consistency, the

display will read “SERVE”. Open the spigot to
dispense product.

H. 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
will decrease the dispense rate.

I. Do not operate the machine when the MIX LOW

message is displayed. Refill the mix container
immediately.

NOTE

The machine has a standby and sleep mode. After
a preset number of freezing cycles, it will enter the
standby mode (followed by sleep mode) and remain
there until someone draws product or presses the
PUSH TO FREEZE button. In the sleep mode, the
machine will keep 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.

3.12 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 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 finished 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).

12

SECTION 4

MAINTENANCE AND ADJUSTMENTS

4.1 MACHINE ADJUSTMENT

This section is intended to provide maintenance personnel
with a general understanding of the machine adjustments.
It is recommended that any adjustments in this section be
made by a qualified person.

4.2 PRODUCT CONSISTENCY

ADJUSTMENT

The operator can adjust product consistency by modifying
the Fine Adjustment setting on the membrane switch. This
is the only adjustment that can be made by the operator
without using a pass code key sequence. Increasing this
setting will increase the drive motor amperage cutout and
increase product consistency. Follow the instructions
below to make fine adjustments to product consistency.

A. Place the Main Freezer Power switch in the ON

position.

B. Press the SET button on the Control Panel once.

Fine Adj will appear on the LCD screen.

C. Press the up arrow button (⇑) until the desired

consistency setting is displayed. The higher the
number, the firmer the product consistency. The
control may be set from 1 to 9. The value increases
by 1 each time the up arrow button is pressed. After
the value reaches 9, numbering restarts at 0. The
0 setting cannot be set.

D. Press the SET button once to save the setting and

return to the current mode display.

4.3 LOCKING THE CONTROL PANEL

The IntelliTec control has a tamper proof mode to prevent
unauthorized use. When set, all buttons on the control
panel are disabled. Follow the instructions below to lock
the control panel

A. Press and hold the PUSH TO FREEZE button for

at least 5 seconds.

B. While still holding the PUSH TO FREEZE button,

press the CLEAN button once.

C. Release both buttons. An asterisk (*) will appear

on the bottom line of the display, indicating that
the control is in the lock out mode.

NOTE:

Repeat steps A, B, and C to unlock the control p anel.

4.4 OBTAINING READINGS AND
MODIFYING SETTINGS (SERVICE
PERSONNEL ONLY)

Readings and settings on the IntelliTec control are ac­cessed through the IntelliTec Control Menu Settings (Re­fer to Figure 4-2). Locating machine readings and system
function settings are completed using the up arrow (⇑) and
left arrow (
IntelliTec Menu Settings sheet is located in the information
pouch behind the header panel.

IntelliTec Control Readings

To obtain machine readings, locate the value on the
machine's menu settings sheet and follow the steps below.

A. Press and hold SEL button for 8 seconds. While

B. Release both buttons.
C. Press the up arrow button (⇑) to navigate to the

D. Press the up arrow (⇑) and left arrow (

E. When all readings have been obtained, press the

⇐⇐

⇐) buttons on the membrane switch. A printed

⇐⇐

still holding the SEL button, press the up arrow
button (⇑). The LCD Screen will read DISPLAY.

correct reading under DISPLAY or press the left
arrow (
menu.

to navigate through the rest of the readings as
needed.

up arrow button (⇑) from ExitMenu to return to the
current mode display.

⇐⇐

⇐) button to navigate to the ERRCODES

⇐⇐

⇐⇐

⇐) buttons

⇐⇐

Figure 4-1 Membrane Switch

13

14

Figure 4-2 IntelliT ec Control Menu Settings

Modifying Control Settings

To change the value of a system function, locate the
function on the IntelliTec Settings Menu and follow the
steps below.

IMPORTANT:

Before making changes to any settings, record the
original values. If the setting changes do not achieve
desired results, revert settings to their original val­ues.

A. Press and hold SEL button for 8 seconds. While

still holding the SEL button, press the up arrow
button (⇑). The LCD Screen will read DISPLAY.

B. Release both buttons.
C. Press the left arrow button (

menu (Basic, Advanced, or Storage).

D. Press the up arrow button (⇑) to navigate to the

value that needs to be changed.

E. Press SET button to enter edit mode.
F. Press the up arrow button (⇑) to change setting.
G. Press SET button to save the setting and exit the

edit mode.

H. Press the up arrow (⇑) and left arrow (

to navigate through the rest of the settings as
needed.

I. When all changes have been completed, press

the up arrow button (⇑) from ExitMenu to return to
the current mode display.

⇐⇐

⇐) to get to the correct

⇐⇐

⇐⇐

⇐) buttons

⇐⇐

4.5 READINGS (SERVICE PERSONNEL

ONLY)

The IntelliTec control continuously monitors and records
temperatures, voltages, amps, and error code details.
Each of these readings are beneficial to service personnel
when troubleshooting.

DISPLAY READINGS

Following are the readings available under the DISPLAY
menu:

Hopper L (°F) / Hopper R (°F)

The temperature of the left and right hoppers are
constantly monitored by the IntelliTec control.

Cycles (count)

This reading counts down the number of cycles in
the current "Serve Mode". The starting value is
dependant upon the Cycles setting on the IntelliTec
control.

°F and amps

Suction line temperature on the freezing cylinder
and drive motor amps are available on the same
screen to assist with setup and troubleshooting.

Aux. Temp (°F)

This reading provides the ambient temperature
around the IntelliTec control.

Supply V (VAC)

A calculated input voltage is recorded.

ERROR CODE READINGS

The following details are recorded under the ERRCODES
menu for each of the last 25 error codes received:

Err1 (hours)

A numerical count of the last 25 error codes is
recorded. When the 26th error has occurred the
earliest error code is erased. A timer also begins
when an error occurs. The timer records the
number of hours since the error occurred. If
power to the machine is interrupted, the timer will
stop until power has been restored.

°F and amps

The suction gas temperature on the freezing
cylinder and the drive motor amps are recorded at
the time of the error.

Aux. Temp (°F)

Ambient temperature of the IntelliTec control is
recorded at the time of the error.

Str (°F)

The storage temperature is recorded at the time
of the error.

VAC and Mode

A calculated input voltage and mode at which the
error occurred are recorded. Following are
descriptions of each mode:

Mode Description
0 Start of freezing cycle
1 Compressor and drive motor on
2 Stir Cycle
3 Compressor off
4 "Standby Mode"
5 "Sleep 1 Mode"
6 "Sleep 2 Mode"
7 "Clean Mode"
8 Startup
9 Storage only refrigeration
10 Freezing cycle is shut down
11 Door safety switch triggered
12 High pressure cutout

15

Up Time (hours)

This value is a record of the total time the machine
has been in service. If power is interrupted, the
timer will stop until power is restored. This timer
does not reset.

RUN STATISTICS

In addition to dynamic readings and recorded
error code details, the IntelliTec control records
rolling averages of run statistics. Following are
the readings available under the RUNSTATS
menu:

On Times (sec)

The control records the time of each freezing
cycle and provides a rolling average.

Off Times (sec)

The control records the time between freezing
cycles and provides a rolling average.

Brl. Min (°F)

The lowest average barrel temperature is
recorded.

Brl. Max (°F)

The highest average barrel temperature is
recorded.

Stor Min (°F)

The lowest average hopper or cabinet temperature
is recorded.

Stor Max (°F)

The highest average hopper temperature is
recorded.

Power On (hrs)

This value is a record of the time the machine has
been in service. If power is interrupted, the timer
will reset.

4.6 ADJUSTMENTS (SERVICE PERSONNEL

ONLY)

The following adjustments directly affect product consis­tency and length of time in "Serve Mode". The default
settings have been created using a 5% milkfat soft serve
mix and provide optimal product consistency while pro­longing product life.

CutOut (amps)

It is recommended to change the CutOut value at
initial startup and when changing mix types.
Adjustments to this setting directly affect the
length of the freezing cycle which changes product
consistency. To properly set the CutOut value,
refer to Section 3-10.

Cut In T (°F)

After the consistency value has been determined,
the Cut In T value can be adjusted. The Cut In T
is the temperature of the refrigerant gas in the
evaporator. Changing this setting changes the
temperature at which the freezing cycle starts.
This value along with the CutOut value determines
the range of temperatures (or "temperature window")
of the product. Decreasing the temperature
decreases the temperature window and, under
normal use, increases the amount of freezing
cycles. This creates a greater chance of product
breakdown by stirring the product often. Increasing
the Cut In T increases the temperature window
which decreases freezing cycles and increases
the chance of heat shock within the product.

Cycles (count)

This setting determines the number of freezing
cycles during "Serve Mode". Increasing the value
will increase the total time in "Serve Mode". Factory
default is 16 cycles. This results in "Serve Mode"
lasting about 2 to 2-1/2 hours without the PUSH
TO FREEZE button being pressed or a spigot
handle being pulled. If the PUSH TO FREEZE
button is pressed or the spigot handle is pulled at
any time during "Serve Mode", the Cycles count
will reset.

4.7 OTHER SETTINGS (SERVICE
PERSONNEL ONLY)

Changing any setting on the IntelliTec control will alter
machine operation and affect the product temperature,
consistency, or life. Refer to the IntelliTec Control System
Settings sheet located in the information pouch behind the
header panel of the machine. If any of the following settings
on the IntelliTec control differ from the System Settings
sheet, it is recommended to revert those settings to factory
defaults.

Stir On (sec)

Adjustments to this setting affect the amount of
time the auger rotates in the stir cycle. The stir
cycle occurs in "Serve Mode", "Standby Mode",
and "Sleep 2 Mode".

Stir Off (sec)

Adjustments to this setting affect the time between
stir cycles. The stir cycle occurs in "Serve Mode",
"Standby Mode", and "Sleep 2 Mode".

On Time (sec)

Increasing this value will increase the length of the
freezing cycle during "Standby Mode" and result
in a decrease of average product temperature in
the barrel.

16

Off Time (sec)

Increasing this value will increase the time between
freezing cycles in "Standby Mode" and result in an
increase of product temperature in the barrel.

Stb Time (sec)

This setting determines the total amount of time in
"Standby Mode".

Sl1DrvOn (sec)

Adjustments to this setting affect the amount of
time the auger rotates in the stir cycle. This stir
cycle only occurs in "Sleep 1 Mode".

Sl1DrOff (sec)

Adjustments to this setting affect the time between
stir cycles. The stir cycle only occurs in "Sleep 1
Mode".

Sl2CutIn (°F)

Changing this setting affects the temperature at
which the freezing cycle starts in "Sleep 2 Mode".

Sl2CtOut (°F)

Changing this setting affects the temperature at
which the freezing cycle stops in "Sleep 2 Mode".

DftOffTm (sec)

In "Serve Mode", this value determines the
maximum time without a freezing cycle. If this
value is met, a freezing cycle will start. In the event
of a freezing cylinder temperature sensor failure,
this value affects the amount of time between
freezing cycles during "Serve Mode".

Refriger

This setting changes how the control handles the
storage refrigeration cycle. The setting for the
E131 and F131 is 2 Hopper on the left control and
None on the right control.

HprCutIn (°F)

This setting determines the temperature at which
the hopper refrigeration cycle starts. This setting
is only available on the left control.

HprCtOut (°F)

This setting determines the temperature at which
the hopper refrigeration cycle stops. This setting
is only available on the left control..

Hpr Off (min)

If the temperature sensor in the hopper fails, this
setting determines the time between hopper
refrigeration cycles. This setting is only available
on the left control..

Hpr On (sec)

If the temperature sensor in the hopper fails, this
setting determines the length of the hopper
refrigeration cycle. This setting is only available
on the left control..

4.8 DRIVE BELT TENSION ADJUSTMENT

To check belt tension, refer to Figure 4-4 and follow the
steps below:

WARNING

Hazardous voltage

The Main Freezer Power switch must be placed in
the OFF position when disassembling for servicing.
The freezer must be disconnected from electrical
supply before removing any access panel. Failure to
disconnect power before servicing could result in
death or serious injury .

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 35­40 lbs.

C. If an adjustment is necessary, loosen the four

motor plate retaining nuts, adjust belt tension then
retighten the four nuts.

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.

Figure 4-4 Belt T ension Adjustment

4.9 CONDENSER CLEANING

The air-cooled condenser is a copper tube and aluminum fin
type. Condensing is totally dependent upon airflow. A
plugged condenser filter, condenser, or restrictions in the
louvered panel will restrict airflow. This will lower the
capacity of the system and damage the compressor. The
condenser must be kept clean of dirt and grease. The
machine must have a minimum of 3” (7.5 cm) of ventilation

17

on the right and left sides of the unit for free flow of air. Make
sure the machine is not pulling over 100° F (37° C) air from
other equipment in the area.

The water-cooled condenser is a tube and shell type. The
condenser needs a cool, clean supply of water to properly
cool the machine, inlet and discharge lines must be 3/8” I.D.
minimum.

The condenser and condenser filter require periodic clean­ing. To clean, refer to the following procedures.

1. Remove the Phillips head screw from the bottom of
the right side panel, and then slide the panels down
and out.

2. To remove the condenser filter, grasp the top and
pull off. Visually inspect for dirt. If the filter is dirty,
shake or brush excess dirt off the filter and wash in
warm, soapy water. Once the filter is clean rinse
thoroughly in warm, clear water and shake dry,
taking care not to damage the filter in any way
(Figure 4-5).

Figure 4-5 Condenser Filter Removal

3. Visually inspect the condenser for dirt by shining
a light through the coil from the back (inside) of the
condenser.

4. If the condenser is dirty, place a wet towel over the
outside of the condenser.

5. Using compressed air or a CO2 tank, blow out the
dirt from the inside of the condenser. Most of the
dirt will cling to the wet towel.

NOTE

If the condenser is not kept clean, refrigeration effi­ciency will be lost.

4.10 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.

The United States department of agriculture and the food
and drug administration require that lubricants used in
food zones be certified 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 filter for dirt. (Refer to
section 4.9).

C. Quarterly Checks

Check drive belts for wear and tighten belts if
necessary. (Refer to section 4.8)

4.11 EXTENDED STORAGE

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

A. Clean thoroughly with warm detergent all parts

that come in contact with mix. Rinse in clear water
and dry all parts. Do not sanitize.

NOTE

Do not let cleaning solution stand in machine barrel
or mix pump 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 flights and auger support bushing

in a plastic bag with a moist paper towel. This will
prevent 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 fitting. The fitting 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 fitting.

E. Place the Main Freezer Power OFF/ON switch in

the OFF position.

F. Disconnect the machine from the source of

electrical supply.

18

SECTION 5

TROUBLESHOOTING

5.1 ERROR CODES

When the machine experiences a problem, one of the
following error codes will be displayed on the control panel.
Each error code directs you to the system location of the
malfunction.

ERROR CODE MALFUNCTION

1 Soft
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
1 0 Auxiliary Sensor
11 Low Temperature
12 Left Hopper Sensor
13 Right Hopper Sensor

To return the machine to normal operation, any error
causing condition must be corrected and the Freezing
Cylinder Off-On switch must be placed in the Off position
and back in the On position before the affected side of the
machine will return to normal operation.

5.2 TROUBLESHOOTING

Error Code 1 - Soft Error

The Soft Error (E1) is an internal control board error
that is logged for future analysis. The refrigeration
is never stopped and the machine will continue to
operate normally.

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 125% of the preset CutOut amp
setting for 10 or more seconds. This may be due
to the product consistency adjustment being set
too high. Place the Main Power OFF/ON switch in
the OFF position, wait until the product in the
freezing cylinder thaws and return the switch to the
ON position. Follow the instructions in Section 3 to
reduce the product consistency by a few levels. 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 20 minutes
without the product reaching consistency in “Serve
Mode” or if the product does not reach proper
temperature in “Sleep 2 Mode”. This error is generally
caused by very low mix levels in the machine’s mix
container 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. To 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 airflow within the machine has reduced
or stopped. Check the sides and top of the machine
for anything that would restrict airflow.

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 will display a
Clean Error (E4). This condition does not reflect 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". The control will attempt to
restart itself after 5 minutes. The display will then
flash and read Restart. To clear the Clean Error,
turn the Freezing Cylinder Off-On switch Off and
back On. After restarting the machine, a refrigeration
cycle will begin. This protects the product in case
the clean button was pressed by mistake.

19

Error Code 5 - Freezing Cylinder Sensor

The Freezing Cylinder Sensor Error (E5) indicates
a failure of the barrel sensor or an extreme out of
range condition (< -34°F or > 99°F). If the control
panel displays an E5, place the Freezing Cylinder
Off-On switch Off and 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 will continue to run using
preset timers. This mode will allow the operator to
continue serving product until the machine can be
serviced.

Error Code 6 - Hopper Sensor (single hopper machines)

The Hopper Sensor Error (E6) will not occur on the
machine.

Error Code 7 - Drive Motor

If the control panel displays a Drive Motor Error
(E7), the control does not sense current coming
from the drive motor. Turn the Freezing Cylinder
Off-On switch Off and 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 inefficient condenser. If the
control panel displays an E9 on an air cooled
machine, check for proper air clearance around the
machine. If the error persists, contact your
Authorized Stoelting Distributor for further
assistance.

Error Code 10 - Auxiliary Sensor

An Auxiliary Temperature Sensor Error (R10)
occurs if the temperature sensor on the control
board fails. Turn the Freezing Cylinder Off-On
switch Off and back On. If the error persists,
contact your Authorized Stoelting Distributor for
further assistance

Error Code 11 - Low Temperature

The Low Temperature Error (E11) occurs when the
temperature of the gas refrigerant at the barrel
sensor falls below -20°F. Although the machine
will not shut down, the active freezing cycle will
immediately end. This error usually occurs when
the machine continues to run in a low mix condition
or if the machine runs out of mix. The product
towards the front of the barrel tends to freeze solid.

Error Code 12 - Left Hopper Sensor

The Left Hopper Sensor Error (E12) indicates a
failure of the hopper sensor or an extreme out of
range condition (< -34°F or > 99°F). If the control
panel displays an E12, turn the left Freezing
Cylinder Off-On switch Off and back On. If the error
persists, contact your Authorized Stoelting
Distributor for further assistance.

NOTE:

If the right control panel shows an E12, make sure
the storage setting is set to NONE.

Error Code 13 - Right Hopper Sensor

The Right Hopper Sensor Error (E13) indicates a
failure of the hopper sensor or an extreme out of
range condition (< -34°F or > 99°F). If the control
panel displays an E13, turn the right Freezing
Cylinder Off-On switch Off and back On. If the error
persists, contact your Authorized Stoelting
Distributor for further assistance.

NOTE:

If the right control panel shows an E13, make sure
the storage setting is set to NONE.

Alternating Flashing Control Panel Lights

The display panel lights will flash in an alternating
sequence under any error codes. Clear the error
and place the Freezing Cylinder Off-On switch in
the Off position and back in the On position.

20

5.3 TROUBLESHOOTING - MACHINE

PRO BL EM PO SSIBLE CAUSE REMEDY

Machine does not
run.

Machine w ill not
shut off.

Product is too firm .

Product is too soft.

1. P ower to m ac hi ne i s off.

2. B l own fuse or tripped circuit.

3. Freez e-up (auger will not turn).

4. High pres s ure cut-out t ripped.

5. Front door not in pl ac e.

1. Drive belt failure.

2. Cons istenc y temperat ure setting i s too
firm.

3. Refrigeration problem.

1. Cut Out setti ng i s too high.

2. P roduc t break down.

1. No vent space for free flow of cooling
air.

2. A i r t emperat ure ent ering c ondens er i s
above 100°F.

3. Condenser i s di rt y .

4. CutOut setting is too low.

5. S t abi l i z ers i n m ix are broken down.

6. A uger is ass em bled i ncorrectly.

7. Refrigeration problem.

1. S upply power to machi ne.

2. Rep l ace or res et.

3. Turn CLEAN-OFF-ON switch to OFF (middle)
pos i tion for 15 m i nutes , then res tart.

4. Wait unt i l aut omatic res et for machine to s tart.

5. A s semble front door in plac e.

1. Rep l ace drive belt .

2. Turn Consis tenc y Adj ustm e nt knob counter­clockwise.

3. Che ck system . (See S e cti on 5 )

1. A djust t he CutO ut am ps (S ee S ection 3-10).

2. Drain, clean and sanitize m achine. Fi ll with
fre sh mi x.

1. A m ini m um of 3" of vent space required. (S ee
Section 2)

2. Change loc at ion or di rec t hot ai r away from
machine.

3. Clean. (See Sect ion 3)

4. A djust t he CutO ut am ps (S ee S ection 3-10).

5. Remove mi x, c l ean, s ani t i ze and freez e down
with fresh m ix.

6. Remove mi x, c l ean, reas semble, saniti ze and
freeze down.

7. Che ck system . (See S e cti on 5 )

Product does not
dispense.

Drive belt slipping
or squealing.

Rear auger seal
leaks.

Front door leaks.

1. No mi x i n hopper.

2. Capac ity of mac hine i s being
exceeded.

3. Drive motor overload tripped.

4. Drive belt failure.

5. Freez e-up (Auger wil l not turn).

1. Worn drive bel t .

2. Freez e-up (Auger wil l not turn).

3. Not t ens i oned properly

1. Out side surface of rear auger seal is
lubricated.

2. Rear seal m i s sing or damaged.

3. S eal o-ring m i s sing, dam aged or
installed incorrectly.

4. Worn or scrat ched auger shaft.

1. Front door k nobs are loose.

2. S pi got part s are not l ubric at ed.

3. Chipped or worn spigot o-rings .

4. O-rings or s pi got i nstalled wrong.

5. Inner spigot hol e i n front door nicked or
scratched.

1. Fi l l hopper wit h m i x .

2. S low up on t he draw rate.

3. Wait for automatic reset. (If condition
cont i nues , call distribut or for service.)

4. Rep l ace drive belt .

5. Turn CLEAN-OFF-ON switch to OFF (middle)
pos i tion for 15 m i nutes , then res tart.

1. Rep l ace drive belt .

2. Turn CLEAN-OFF-ON switch to OFF (middle)
pos i tion for 15 m i nutes , then res tart.

3. Adjust belt tension

1. Clean lubricant from outs i de of rear seal,
lubric at e i ns i de of seal and reins t al l .

2. Chec k or replac e.

3. Chec k . or replace.

4. Replac e auger s haft.

1. Tighten k nob s.

2. S ee S ec tion 3.

3. Replac e o-rings .

4. Remove s pi got and c heck o-ring.

5. Replac e front door.

21

22

6.1 DECALS AND LUBRICATION

Part 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
208467 Brush - 3/8" X 1" X 5" 1
236025 Card - Cleaning Instruction 1
324065 Decal - Water Inlet 1
324105 Decal - Caution Electrical Shock 1
324106 Decal - Caution Electrical Wiring Materials 1
324107 Decal - Caution Hazardous Moving Parts 1
324141 Decal - Caution Rotating Blades 1
324200 Decal - High Pressure Cut-Out (Water-Cooled) 1
324208 Decal - Attention Refrigerant Leak Check 1
324393 Decal - Stoelting Swirl Logo (Drip Tray Support) 1
324509 Decal - Cleaning Instructions 1
324566 Decal - Wired According To 1
324584 Decal - Adequate Ventilation 3" 1
324592 Decal - Hold Ready 1
324593 Decal - Power 1
324594 Decal - Attention Heat Sensitive 1
324612 Decal - Control 1
324686 Decal - Danger Automatic Start 1
324803 Decal - Domed Stoelting Logo (Large) (Header Panel) 1
324804 Decal - Domed Stoelting Swirl (Header Panel) 1
324806 Decal - Domed A & W Logo (Header Panel) 1
324825 Decal - Main Freezer Power 1
324827 Decal - Freezing Cylinder 1
324889 Decal - Orange Tree 1
368140 Filter - Air (Condenser) 1
396241 Gasket - Freezer Base 1
508048 Lubricant - Spline (2 oz Squeeze Tube) 1
508135 Petrol Gel - 4 oz Tube 1

513650 Manual - Service ­1159584 Mix Out Audible Signal ­2177917 Brush Kit -

SECTION 6

REPLACEMENT PARTS

23

6.2 AUGER SHAFT AND FACEPLATE PARTS

24

6.2 AUGER SHAFT AND FACEPLATE PARTS (CONTINUED)

Part Description Quantity

149003 Bushing - Front Auger Support 2

232734 Cap - Rosette - Teardrop 3

266076 Clip - Drip Tray 2

314453 Cover - Hopper 2

381804 Auger Flight 6 (E131) 8 (F131)

417006 Grid - Drip Tray (Metal) 1

482019 Knob - Front Door (Black) 4

624598-5 O-Ring - Outside Spigot - Black (5 Pack) 4
624614-5 O-Ring - Top & Bottom Center Spigot - Black (5 Pack) 2
624664-5 O-Ring - Middle Center Spigot - Black (5 Pack) 1

624677-5 O-Ring - Mix Inlet - Black (5 Pack) (Spigot Extension - Ser. #5687 Plus) 4
624678-5 O-Ring - Rear Seal - Black (5 Pack) 2

625133 O-Ring - Front Door - Red 2

666786 Seal - Rear Auger - Black 2

694255 Spring - Auger Flight 6 (E131) 8 (F131)

744260-SV Tray - Drip 1

744273 Tray - Drain (Black Plastic) 1
1159501 O-Ring & Bushing Kit ­1177429 O-Ring & Spigot Extension Kit -

2149243-01 Mix Inlet Assembly - 3/16" Hole - Standard Length (2A) 2

2177072 Extension - Spigot - 1.5" ­2177073 Extension - Spigot - 2.5" ­2177074 Extension - Spigot - 3.2" ­2177428 Door w/Pins (Requires #1177429) 1
2187811 Spigot Body - Center 1
2187812 Spigot Body - Outer 2
3170644 Support - Front Auger 2
4157952 Auger Shaft 2 (E131)
4157968 Auger Shaft 2 (F131)

25

WARRANTY

SOFT SERVE / SHAKE FREEZERS

1. Scope:

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

motors, speed reducers, 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