Stoelting Freezer U431 User Manual

Model U431 (Serial #17978 and up)

OWNER'S MANUAL

Manual No. 513568-4 May 2004, Rev. 0

Download from Www.Somanuals.com. All Manuals Search And Download.

Need Parts or Service?

We stock the parts you need.

Our Technicians are factory

trained and are certified in the

Stoelting Technicare program.

CALL

ꢀ

Distributor: _________________________

Phone No.: _________________________

(fill in or affix label)

Model No.: _______________________

Serial No.: _______________________

Purchase Date: ____________________

Start-Up Date:____________________

Download from Www.Somanuals.com. All Manuals Search And Download.

STOELTING® OWNER'S MANUAL

FOR

MODEL U431

CAB MODEL SOFT-SERVE PRESSURIZED FREEZER

This manual provides basic information about the freezer. Instructions and suggestions are given

covering its basic operation and care.

The illustrations and specifications are not binding in detail. We reserve the right to make changes

atanytimewithoutnotice,tothefreezeranditscomponents,withoutincurringanyobligationtomodify

or provide new parts for freezers built prior to date of change.

DONOTATTEMPTtooperatethefreezeruntilinstructionsandsafetyprecautionsinthismanualare

readcompletelyandarethoroughlyunderstood. Ifproblemsdeveloporquestionsariseinconnection

withinstallation,operationorservicingofthefreezer,contactthecompanyatthelocationlistedbelow.

STOELTING, LLC

502 Hwy 67

Kiel, WI 53042-1600

Tele: 920-894-2293

Fax: 920-894-7029

Download from Www.Somanuals.com. All Manuals Search And Download.

TABLE OF CONTENTS

Section 1 .............................................................................................................. 1

1.1

1.2

Description.............................................................................................. 1

Specifications.......................................................................................... 2

Section 2 .............................................................................................................. 3

2.1

2.2

2.3

2.4

2.5

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

Shipment & Transit .................................................................................. 4

Freezer Installation................................................................................... 4

Installing Permanent Wiring...................................................................... 4

Mix Pump ................................................................................................ 5

Section 3 .............................................................................................................. 9

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.8

Safety Precautions .................................................................................. 9

Operating Controls and Indicators ............................................................ 9

Important Information Regarding Cleaning and Sanitizing......................... 11

Disassembly of Freezer Parts.................................................................. 12

Cleaning Disassembled Parts ................................................................. 13

Sanitize Freezer Parts ............................................................................. 13

Cleaning the Freezer ............................................................................... 14

Assembling the Freezer........................................................................... 14

Sanitizing ................................................................................................ 16

Initial Freeze down and Operation ............................................................ 16

Mix Information ........................................................................................ 17

Operation of Mix Pump ............................................................................ 18

Mix Pump Cleaning ................................................................................. 18

Disassembly and Inspection of Removable Parts..................................... 18

3.9

3.10

3.11

3.12

3.13

3.14

Section 4 .............................................................................................................. 21

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

4.11

Freezer Adjustment ................................................................................. 21

Product TemperatureAdjustment ............................................................. 21

Overrun Adjustment ................................................................................. 21

Mix Pump Hose Reposition ..................................................................... 22

Mix Pump Hose Replacement.................................................................. 22

Cab Temp.Adjustment............................................................................. 22

Drive Belt TensionAdjustment.................................................................. 22

Condenser Cleaning (Air Cooled Freezers) ............................................. 23

Preventative Maintenance........................................................................ 23

Extended Storage ................................................................................... 23

Troubleshooting ....................................................................................... 24

Section 5 .............................................................................................................. 29

5.1

5.2

How to Order Replacement Parts ............................................................ 29

Parts Lists and Reference Drawings........................................................ 29

Download from Www.Somanuals.com. All Manuals Search And Download.

ILLUSTRATIONS

Figure 1 Model U431 Freezer ..............................................................1

Figure 2 Specifications ........................................................................1

Figure 3 Decal Locations.....................................................................3

Figure 4 Water/ElectricalConnections .................................................4

Figure 5 AugerRotation.......................................................................4

Figure 6 MixHoseInstallation...............................................................5

Figure 7 MixPump...............................................................................6

Figure 8 3-wayTee ..............................................................................7

Figure 9 Mix Inlet Tube & Probe Assy. Clip...........................................7

Figure 10 Hose Holder...........................................................................7

Figure 11 OperatingControls.................................................................9

Figure 12 Auger Flight Wear & Front Auger Support Bushing Wear .......12

Figure 13 Front Door Disassembly ........................................................13

Figure 14 AugerFlightRemoval.............................................................13

Figure 15 Rear Seal Removal ................................................................13

Figure 16 Rear Seal Lubrication ............................................................14

Figure 17 SpringInstallation ...................................................................14

Figure 18 Front Door Assembly .............................................................15

Figure 19 Air Bleed Valves ....................................................................16

Figure 20 DrainingSanitizer ..................................................................16

Figure 21 Refrigerated Cabinet .............................................................17

Figure 22 Dispensing Product ...............................................................17

Figure 23 MixPumps.............................................................................18

Figure 24 RemovableParts ...................................................................19

Figure 25 Cleaning Air Tube ..................................................................19

Figure 26 Cleaning Feed Tube ..............................................................19

Figure 27 MixPumpTubeRouting .........................................................19

Figure 28 Potentiometer ........................................................................21

Figure 29 OverrunAdjustment ................................................................21

Figure 30 TemperatureControlCab ......................................................22

Figure 31 BeltAdjustment ......................................................................23

Download from Www.Somanuals.com. All Manuals Search And Download.

SECTION 1

INTRODUCTION

1.1 DESCRIPTION

The Stoelting U431 floor model freezer is pressure fed.

The freezer is equipped with fully automatic controls to

provide a uniform product. The freezer is designed to

operate with almost any type of commercial soft-serve

or non-dairy mixes available, including ice milk, ice cream,

yogurt, and frozen dietary desserts.

This manual is designed to assist qualified personnel and

operators in the installation, operation and maintenance

of the Stoelting Model U431 pressure freezer.

Figure 1. Model U431 Freezer

Figure 2. Specification

Download from Www.Somanuals.com. All Manuals Search And Download.

1.2 SPECIFICATIONS

MODEL U431

Width: 26-3/4" (68cm)

Depth: 39-3/4" (101cm)

Height: 65-3/4" (167cm)

DIMENSIONS

WEIGHT

925lbs. (419,5 kg)

975lbs. w/Crate (442 kg)

1 PH

3 PH

1 PH

3 PH

ELECTRICAL

Left Side Right Side Left Side Right Side Left Side Right Side Left Side Right Side

17.6

(2 separate power

Total Running Amps

17.2

11.6

11.2

20.8

17.2

14.8

11.2

sources required.)

Minimum Circuit Ampacity

HACR Max.Circuit Breaker

Maximum Fuse Size

COMPRESSOR

DRIVE MOTOR

COOLING

11,690 B.T.U.H. each

2 HP each

Water or air cooled. req's 3" (7,5cm) all around clearance and 10" (25cm) top clearance.

Water cooled req's 1/2" (12,5mm) NPT water and drain fittings.

Download from Www.Somanuals.com. All Manuals Search And Download.

SECTION 2

INSTALLATION INSTRUCTIONS

2.1 SAFETY PRECAUTIONS

WARNING

periodically to be sure they have not been painted over,

rubbed off, fallen off, and can be recognized as warning

labels.

CAUTION

Do not attempt to operate the freezer until the safety pre-

cautions and operating instructions in the manual are read

completely and are thoroughly understood.

If you are in need of replacement labels, indicate the part

number, type of label, location of label, and quantity re-

quired along with your name and address and mail to:

Take notice of all warning labels on the freezer (Fig.3).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 freezer. Labels should be checked

Stoelting, LLC

Commercial Products

502 Hwy. 67

Kiel, WI 53042

Figure 3. Decal Locations

Download from Www.Somanuals.com. All Manuals Search And Download.

2.2 SHIPMENT AND TRANSIT

The freezer has been assembled, operated, and in-

spected at the factory. Upon arrival at the final destina-

tion, the freezer must be checked for any damage which

may have occurred during final transit.

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 freezer has been checked for dam-

age. 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 in-

spection. The customer must place claim for damage

and/or shortages in shipment with the carrier. Stoelting,

Inc. cannot make any claims against the carrier.

Figure 4. Water/Electrical Connections

F. Place the CLEAN-OFF-SERVE switches in the OFF

position before continuing. Figure 11.

2.3 FREEZER INSTALLATION

2.4 INSTALLING PERMANENT WIRING

Permanent wiring is required by local codes, the follow-

ing procedure must be performed:

WARNING

INSTALLATION MUST BE PERFORMED BY A

QUALIFIED ELECTRICIAN/REFRIGERATION

SPECIALIST. INCORRECT INSTALLATION WILL

VOID THE WARRANTY, AND MAY CAUSE SE-

VERE DAMAGE TO THE MACHINE. MAY

CAUSE PERSONAL INJURY.

A. Refer to the nameplate at the rear of the freezer for

specificelectricalrequirements.Makesurethepower

source in the building matches the freezer name-

plate requirements. Bring the wires into the junction

boxesthroughtheaccessholesinthebottomrearof

the freezer. Figure 4.

Installation of the freezer involves moving the freezer

close to its permanent location, removing all crating, set-

ting in place, assembling parts, and cleaning.

NOTE

Three phase freezers in areas of unbalanced elec-

trical loads require special attention when connect-

ing input electrical power. The unbalanced leg of

power (called wild or high) must be connected to

L2 in the junction box.

A. Uncrate the freezer.

B. Install the four casters. Turn the threaded end into

the freezer until zero threads are showing. To level,

turn out casters no more than 1/4" maximum, then

tighten all jam nuts.

B. Remove the lower back panel and the two junction

box covers located at the bottom of the freezer.

C. The freezer must be placed in a solid level position.

NOTE

C. lnstall permanent wiring according to local code.

Accurate leveling is necessary for correct drainage

of freezer barrel and to insure correct overrun.

D. Check the auger shaft rotation by placing the MAIN

DRIVE switch in the CLEAN position. Auger shaft

rotation is clockwise as viewed through the clear

plastic front door. If the rotation is not clockwise,

turn main electrical power OFF. Then reverse L1

and L3 electrical power lines to the junction box

(three phase only). Re-check auger shaft rotation.

Figure 5.

D. The freezer must have a minimum of 3" (7,5cm)

-6" (15cm) high ambient conditions- of space on all

sides and 10" (25cm) at the top for proper circula-

tion.

CAUTION

FAILURE TO PROVIDE ADEQUATE VENTILA-

TION WILL VOID WARRANTY!

E. Water-cooled freezers need an adequate water

supply. Install 1/2" (12,7mm) pipe or 1/2" (12,7mm)

inside diameter copper water line to the freezer.

Connect water outlet to a drain using a 1/2"

(12,7mm) inside diameter line. Automatic washer

hoses work well for final connections. All water

connections must comply with local codes. Fig. 4.

CAUTION

FLUSH ALL WATER LINES BEFORE INSTALLA-

TION. IN STORES WITH SEDIMENT IN WATER,

ADD SUITABLE FILTER OR STRAINER TO WATER

INLET.

Figure 5. Auger Rotation

Download from Www.Somanuals.com. All Manuals Search And Download.

2.5 MIX PUMP

A. Mix Pump Hose Installation

Follow the steps below to install the mix pump hose.

1. Turn pump on.

2. Feed one end of mix pump hose into the entering

or pick-up hose side (left) of black cover.

3. Gently push the hose into the black cover until it

begins to feed.

6" (15cm)

Figure 6. Mix Hose Installation

4. Allow the hose to feed itself thru the pump

until 6" (15cm) remains on the entering side.

7. Turn pump on.

8. Allowremaining6"(15cm)oftubingtofeedthrupump

until hose adapter prevents further feeding.

5. Turn pump off.

6. Connect mix pump hose to pickup hose

adapter using small hose clamp.

9. Turn pump off.

10.Connect free end of mix pump hose to 3-way

Tee as shown in Figure 7. When all connections

are complete the 3- way Tee must be lower than

the black pump housing. Figure 8.

CAUTION

DO NOT TWIST MIX PUMP HOSE.

Download from Www.Somanuals.com. All Manuals Search And Download.

B. Connect1/2inch(12,7mm)I.D. plasticfoodgrade

tubing to mix check valve (Item 7) and then to the

mixcontainer. Observecheckvalveflowarrow.

Secure with hose clamps. Then place assembly

thru hole in cover and install retainer clip. See

Figure 9.

C. Connect1/2inch(12,7mm)I.D. plasticfoodgrade

tubing between the large port of air/mix tee and

refrigerated mix transfer line. Secure with large

hose clamp or equivalent. See Figure 9.

CAUTION

AIR/MIX TEE MUST REMAIN BELOW THE

BLACK COVER/CLAMP. IF THE TEE IS

ABOVE THE PUMP MIX WILL DRAIN TO THE

AIR COMPRESSOR RESULTING IN PUMP

DAMAGE.

D. Connect mix low cords. Figure 9.

Figure 7. Mix Pump

Download from Www.Somanuals.com. All Manuals Search And Download.

Refrigerated

Mix Transfer

Line

Å 3-way Tee

Large PortÆ

(Air/Mix)

Figure 8. 3-way Tee

Low Mix Cord

Cover

Retainer

Clip

Mix

Container

Figure 9. Mix Inlet Tube & Probe Assy. Clip

Hose Holder

Figure 10. Hose Holder

Download from Www.Somanuals.com. All Manuals Search And Download.

SECTION 3

INITIAL SET-UP AND OPERATION

A. Spigot Switch

3.1 SAFETY PRECAUTIONS

When the spigot handle is opened the SPIGOT

switch will start the auger drive and refrigeration

systems.Whenthespigothandleisclosed,thedrive

SAFE OPERATION IS NO ACCIDENT; observe these

rules:

A. Know the freezer. Read and understand the operat-

ing instructions.

B. Notice all warning labels on the freezer.

C. Wear proper clothing. Avoid loose fitting garments,

and remove watches, rings or jewelry which could

cause a serious accident.

D. Maintain a clean work area. Avoid accidents by

cleaning 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.

B. Clean-Off-Serve Switch

The CLEAN-OFF-SERVE switch is a three position

toggle switch used to control the operation of the

refrigeration system and auger. When the switch is

placed in the CLEAN position, the refrigeration sys-

tem will be off and auger will rotate for cleaning.

When the switch is placed in the OFF position, the

refrigeration system and auger will not operate.

F. Disconnect electrical power for maintenance.

Never attempt to repair or perform maintenance on

the freezer until the main electrical power has been

disconnected.

G. Do not operate under unsafe operating condi-

tions. Never operate this freezer if unusual or exces-

sive noise or vibration occurs.

When the switch is placed in the SERVE position,

therefrigerationsystemandaugerwilloperateauto-

matically.TheswitchshouldbeplacedintheSERVE

positionfornormaloperation.

C. Cabinet-Off-OnSwitch

The CABINET-OFF-ON switch is a two position

toggle switch. When the switch is placed in the OFF

position, the lower cabinet refrigeration system will

not run. When the switch is placed in the ON

position, the lower cabinet refrigeration system will

run until the preset temperature is reached; then

cycle ON and OFF to maintain that temperature.

3.2 OPERATING CONTROLSAND INDICATORS

Before operating the freezer, it is required that the opera-

tor know the function of each operating control. Refer to

Figure 11 for the location of the operating controls on the

freezer.

D. Cab Indicator Light

A flashing light indicates the cab OFF-ON switch is

intheOFFposition, norefrigeration. PlacetheOFF-

ON switch in the ON position for cab refrigeration.

Standby-

Freezing

Serve

Clean-

Off-Serve

Standby-

Serve

Clean-

Off-Serve

Dispense Rate

Adjusters

E. Pump Switch

The pump motor switch is a two position toggle

switch. When the switch is placed in the OFF

position, the pump will not run. When the switch is

placedintheONposition, thepump willrununtilthe

preset pressure is reached, then cycle ON and OFF

as product is drawn to maintain that pressure.

Low Mix

Light

Low

Mix

Cab

Off-On

Light

F. Standby/Serve Switch

The standby/serve switch is a two position toggle

switch. When the switch is placed in the Standby

position the freezer will cycle to maintain a

temperature below 41°F. When the switch is in the

Serve position the freezer will cycle to maintain a

servableproduct.

Cab Indicator

Light

Pump Switch

Figure 11. Operating Controls

WARNING

G. Freezing Switch

The CLEAN-OFF-SERVE switch must be placed

in the OFF position when disassembling for

cleaning or servicing. The freezer must be dis-

connected from electrical supply before remov-

ing any access panel.

The freezing switch is a two position toggle switch.

When the switch is placed in the ON position

the freezer will be forced to run 30 seconds after the

temperature control is satisfied.

Download from Www.Somanuals.com. All Manuals Search And Download.

H. DispenseRateAdjusters

The dispense rate adjuster limits the opening of the

spigot. To adjust product dispense rate, turn the

adjustingknobclockwiseforslowerflowandcounter-

clockwise for faster flow.

High Head Pressure Cut Out

If the head pressure exceeds 445 PSIG (28 bar) air

cooledandwater cooled, the high head pressure

cutout will trip. The reset button can be accessed

from the side of thefreezer.

J. Low Mix Light

The low mix light will illuminate when the liquid level

in the mix container drops below two gallons.

K. Front Door Safety Switch

Thefrontdoorsafetyswitchpreventstheaugerfrom

turning when the front door is removed. The switch

is open when the door is removed and closed when

the door is properly installed.

Download from Www.Somanuals.com. All Manuals Search And Download.

CLEANING

3.3IMPORTANTINFORMATIONREGARDING

CLEANINGANDSANITIZING

Is the removal of soil materials from a surface.

Isaprerequisiteforeffectivesanitizing.

Soft serve and shake freezers require special

consideration when it comes to food safety and

propercleaningandsanitizing.

NOTE

An UNCLEAN surface will harbor bacteria that can

defy sanitizing efforts.

The following information specifically covers issues

for cleaning and sanitizing frozen dessert freezers.

This information is meant to supplement a

comprehensivefoodsafetyprogram.

Bacteria can develop and resist sanitizing efforts

within a layer of soil material (milkstone). Thorough

cleaningproceduresthatinvolvemilkstone

removal are critical for operators of frozen

dessertmachines.

Soil Materials Associated with Frozen Dessert

Machines

SANITIZING

MILKFAT/BUTTERFAT–Ascomponentsofice-

cream/frozen custard mix, these soils will

accumulate on the interior surfaces of the machine

and its parts. Fats are difficult to remove and help

attribute to milkstone build-up.

Kills bacteria.

Can be effective on clean surfaces only.

DOES NOT clean or remove milkstone.

NOTE

Using a SANTITIZER on an unclean surface

will not guarantee a clean and safe frozen

dessert machine.

MILKSTONE – Is a white/gray film that forms on

equipment and utensils that come in contact with

dairy products. These films will accumulate slowly

on surfaces because of ineffective cleaning, use of

hard water, or both. Milkstone is usually a porous

deposit, which will harbor microbial

contaminants and eventually defy sanitizing

efforts.

Proper Daily Maintenance:

The Only Way to Assure Food Safety and

Product Quality

Properdailymaintenancecaninvolveawidevariety

of products and procedures. Overall, the products

and procedures fall into three separate categories.

(Please note that this is a brief overview intended for

informationalpurposesonly.)

1. CLEANING–Thisinvolvesdrainingmixfromthe

freezer barrel and rinsing the machine with

water. Next, a cleaner is run through the

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-purposecleanersDONOTremove

milkstone.) This can lead to high bacteria counts

and a food safety dilemma.

machine. Then, the machine is disassembled

and removable parts are taken to the sink for

cleaning.

IT IS BEST TO CONTROL MILKSTONE ON A

DAILYBASISBEFOREITCANBECOMEA

SIGNIFICANTFOODSAFETYPROBLEM.

2. MILKSTONE REMOVAL – Since almost all

cleaners do not have the ability to remove

milkstone, the use of a delimer becomes

necessary. Although this procedure may not be

needed on a daily basis, it will usually follow the

cleaning procedure. It requires letting a delimer

solution soak in the machine for an extended

period of time. Individual parts are also soaked

in a deliming solution for an extended period of

time (more about delimers in Additional

Information).

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

CLEANINGvs.SANITIZING

3. SANITIZING – After the machine has been

cleaned and contains no milkstone, the

machineisreassembled. ThenaFDA-approved

sanitizing solution is run through the machine to

kill bacteria. The machine is then ready for food

preparation.

It is important to distinguish between cleaning and

sanitizing. Although these terms may sound

synonymous, they are not. BOTH are required for

adequatefoodsafetyandpropermachine

maintenance.

Download from Www.Somanuals.com. All Manuals Search And Download.

The ideal concentration of chlorine needs to be 100

ppm (as stated by the FDA).

As a recommended cleaner and sanitizer for your

frozendessertmachine,STERA-SHEENhasproven

to be one of the best daily maintenance products for:

NOTE

Follow the directions on the container for proper

concentration.

CLEANING–Thoroughremovalofallsolids

including butterfat and milk fat.

There are two main factors that contribute to falling

chlorine concentrations in a sanitizing solution.

MILKSTONEREMOVAL–Completeremovalof

milkstone.

1. PRODUCT USE – As the chlorine in the

solution is being used, chlorine concentrations

fall.

SANITIZING–FDA-approvednorinsesanitizer

for food contact surfaces.

Additional Information

2. TIME – As time passes, small amounts of

chlorine “evaporate” from the solution. (That is

why you can smell it.)

THEUSEOFDELIMERS

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

havedeveloped. Whiletheseproductsarevery

effectiveforremovingHIGHlevelsofmilkstone,they

are not ideal for two reasons:

Sanitizing solutions should not be allowed to fall

below 100 ppm chlorine. New solutions should be

mixed once old solutions become ineffective.

3.4 DISASSEMBLY OF FREEZER PARTS

1. PRODUCT SAFETY – Strong acids are

dangerouschemicalsandhandlingthem

requiressafety

WARNING

Moving machinery can grab, mangle and dis-

member. Place the CLEAN-OFF-SERVE toggle

switch in the OFF position before disassembling

for cleaning or servicing. Placing the CLEAN-OFF-

SERVE toggle switch in the SERVE position dur-

ing cleaning or servicing may result in serious

personal injury.

2. MACHINE DAMAGE – Strong acids will attack

metalandrubbercausingprematurewearof

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 it’s

equivalent, there is no need for the use of a

DELIMER.

Beforeusingthefreezerforthefirsttime,completefreezer

disassembly,cleaningandsanitizingprocedureswillneed

tobefollowed.Routinecleaningintervalsandprocedures

must comply with the local and state health codes.

Inspection for worn or broken parts should be made at

every disassembly of the freezer for cleaning or other

purposes. All worn or broken parts should be replaced to

ensure safety to both the operator and the customer and

tomaintaingoodfreezerperformanceandaqualityprod-

uct.Twonormalwearareasaretheaugerflightsandfront

auger support bushing (see Figure 12).

DONOTUSEBLEACH

BLEACHHASABSOLUTELYNO CLEANING

PROPERTIES.

BLEACH IS CORROSIVE. It can and will

damage components of the machine causing

prematurewearandmetalcorrosion.

GENERALPURPOSECLEANERS

To disassemble the freezer, refer to the following steps:

General purpose cleaners do not have the ability to

remove milkstone. Milkstone will become a problem

if not remedied with additional products and

procedures.

Wear Line

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.

Figure 12. Auger Flight Wear & Front Auger

Support Bushing Wear

Download from Www.Somanuals.com. All Manuals Search And Download.

A. Disassembly Of Front Door

1. Remove the front door by turning off the circular

knobs and then pulling the front door off the studs.

2. Remove the air bleed valve by unscrewing the knob

while holding the valve stem from behind. Remove

the compression spring and push air bleed valve

through the rear of the front door.

3. Remove the spigot through the bottom of the front

door (see Figure 13). Remove all O-rings from

spigots and air bleed valve.

Figure 15. Rear Seal Removal

3.5 CLEANINGDISASSEMBLEDPARTS

Disassembled freezer parts require complete cleaning,

sanitizing and air drying before assembling. Local and

state health codes will dictate the procedure required.

Somestatehealthcodesrequireafoursinkprocess(pre-

wash, wash, rinse, sanitize, air dry), while others require

a three sink process (without the pre-wash step). The

followingproceduresareageneralguidelineonly.Consult

yourlocalandstatehealthcodesforproceduresrequired

in your location.

A. To clean the freezer parts, disassemble all parts.

(Refer to section 3.4 for the disassembly of freezer

parts.)

Figure 13. Front Door Disassembly

B. Disassembly Of Auger

B. Place all front door and auger parts in clean 90° to

110°F (32°C to 43°C) water and wash thoroughly

(four sink procedure only).

1. Remove the front auger support by pulling it

straight out of the freezer barrel.

C. Place all parts in 90° to 110°F (32°C to 43°C) , mild

detergent water and wash thoroughly.

2. Remove the plastic bearing from the front auger

support.

3. Remove the auger by pulling slowly and rotating

out of the freezer barrel. As the auger is

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

43°C)water.

withdrawn, remove each plastic flight and spring

from the auger. Be careful not to scratch inside of

freezer barrel when removing flights or auger.

Remove the spring from each auger flight.

F. Sanitize all freezer parts following procedures out

linedbelow.

3.6 SANITIZE FREEZER PARTS

A. Use a sanitizer mixed according to manufacturer's

instructionstoprovidea100partspermillionstrength

solution. Mix sanitizer in quantities of no less than 2

gallons of 90° to 110°F (32°C to 43°C) water. Allow

the sanitizer to contact the surfaces to be sanitized

for 5 minutes. Any sanitizer must be used only in

accordance with the manufacturer's instructions.

B. Placeallpartsinthesanitizingsolutionfor5minutes,

thenremoveandletairdrycompletelybeforeassem

bling in freezer.

Figure 14. Auger Flight Removal

4. Keep the rear of the auger tipped up once it is

clear of the freezer barrel.

5. Wipe spline lubricant off hex end of auger with a

paper towel. Remove the rear seal. Figure 15.

Download from Www.Somanuals.com. All Manuals Search And Download.

3.7CLEANINGTHEFREEZER

CAUTION

Lubricate

with

Socket

Risk of Product Damage

Do not use acid cleaners, strong caustic compounds

or abrasive materials to clean any part of the freezer

exterior or plastic parts.

Lubricant

Lubricate with Petrogel

Figure 16. Rear Seal Lubrciation

The exterior should be kept clean at all times to

preserve the lustre of the stainless steel. A good

grade of stainless steel has been used on the

freezer to ease clean-up. To remove spilled or dried

mix, simply wash the exterior in 90° to 110°F (32°C

to 43°C) , soapy water and wipe dry.

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

amount of white socket lubricant. A small container

of socket lubricant is shipped with the freezer.

Do not use highly abrasive materials as they will

mar the finish. A mild alkaline cleaner is recom-

mended. Use a soft cloth or sponge to apply the

cleaner. For best results, wipe in the direction of the

grain of the steel.

D. Screw the springs onto the studs in plastic flights.

Spring must be screwed into the flights com-

pletely to provide proper tension (see Figure 17).

A. Cleantherearsealsurfacefrominsideofthefreezer

barrel.

B. Using this sanitizing solution and the large barrel

brush provided, sanitize the barrel by dipping the

brush in the sanitizing solution and brushing the

inside of the barrel.

C. Removethereardriptraybypullingfromsidepanel.

Clean and replace drip tray.

3.8ASSEMBLINGFREEZER

Toassemblethefreezerparts,refertothefollowingsteps:

NOTICE

Figure 17. Spring Installation

Petro-Gel sanitary lubricant or equivalent must be

used when lubrication of freezer parts is specified.

E. Install first flights to bottom of auger, rotate, add

successiveflightsfrombottomastheaugerispushed

slowlyintothefreezerbarrel.Carefullyengageauger

with drive socket in speed reducer by rotating auger

slowly and pushing on end of auger.

NOTICE

The United States Department of Agriculture and

the Food and Drug Administration require that lubri-

cants used on food processing equipment be certi-

fied for this use. Use Lubricants only in accordance

with the manufacturer's instructions.

F. Applyathinfilmofsanitarylubricanttotheinsideand

outsideofthefrontaugersupportbearing,thenplace

on the front of the auger. Assemble the front auger

support onto the auger bearing.

A. Assemble all O-rings onto parts dry, without lubri-

cation. Then apply a thin film of sanitary lubrication

to exposed surfaces of the O-rings.

B. Lubricate rear seal area on auger shaft with a thin

layerofsanitarylubricant.InstalltherearsealO-ring.

Lubricate outside of rear seal O-ring with sanitary

lubricant.

NOTICE

Position the front support on auger so legs do not

interfere with the pin on the back of the front door

assembly. Front door must push auger in slightly

when it is being tightened to prevent the rear seal

from leaking.

C. Installstainlesssteelrearsealadapterintorearseal

dry (without lubricant). Lubricate inside surface of

rear seal adapter and install onto auger shaft. DO

NOTlubricateoutsideofrearaugerseal (seeFigure

16).

Download from Www.Somanuals.com. All Manuals Search And Download.

G. Assemble O-rings onto the spigot dry, without

lubrication.Thenapplyathinfilmofsanitarylubricant

to the outside of the O-rings and spigot bodies.

H. Install the spigots through the bottom of the front

door ( see Figure 18).

Figure 18. Front Door Assembly

Assemble the air bleed valve O-ring onto the air

bleed valves. Position the O-ring in groove close to

thewidepart. Applyathinfilmofsanitarylubricantto

the O-rings.

Insert the air bleed valves from the back of the front

door. Install compression springs onto air bleed

valves, then screw knobs on finger tight.

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

O-rings, and fit into the grooves on the rear of the

frontdoor.

L. Placethefrontdoorassemblyonthemountingstuds

and push front door against the freezer carefully.

M. Secure front door assembly by placing the knobs on

the studs and alternately tighten opposite corners

until finger tight only. Do not overtighten. Proper

O-ringsealcanbeobservedthroughthetransparent

frontdoor.

N. Move the spigot handles to the closed position.

Download from Www.Somanuals.com. All Manuals Search And Download.

3.9 SANITIZING

C. Let sanitizing solution fill the freezer barrel to air bleed

valve, then close the valve by pulling out to lock in

place.

Sanitizing must be done after the freezer is clean and just

before the freezer is filled with mix. Sanitizing the night

before is not effective. However, you should always clean

the freezer and parts after using it.

D. Place the CLEAN-OFF-SERVE toggle switch in

the ON position while pressing the CLEAN switch.

WARNING

The United States Department of Agriculture and

the Food and Drug Administration require that

all cleaning and sanitizing solutions used with

food processing equipment be certified for this

use.

When sanitizing the freezer, refer to local sanitary regula-

tions for applicable codes and recommended sanitizing

products and procedures. The frequency of sanitizing must

comply with local health regulations. Mix sanitizer ac-

cording to manufacturer’s instructions to provide a 100

parts per million strength solution. Mix sanitizer in quan-

tities of no less than 2 gallons of 90°F to 110°F 90° 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 in-

structions.

Figure 20. Draining Sanitizer

E. Check for leaks when the freezer barrel is first

pressurized with sanitizing solution.

1. Check for leaks at the plastic front door, the

O-rings may not be sealed.

2. Check the drain located at the center of the

Drip Tray for leaks coming from the rear of the

Rear Auger Seal.

3. Check inside cab unit for leaks at hose connec-

tions.

F. Using a sanitized soft bristle brush or equivalent,

dipped in sanitizing solution, clean mix container.

G. After five minutes, open spigot to expel sanitizing

solution. Drain all solution from freezer using all three

spigots (See Figure 20).

Air Bleed Valves

H. Close the spigot and place the mix pump switch

and the CLEAN-OFF-SERVE switch in the OFF

position.

Figure 19. Air Bleed Valves

CAUTION

The freezer is now sanitized and ready for adding mix.

Risk of Product Damage

3.10 INITIAL FREEZE DOWN AND OPERATION

Avoid prolonged contact of sanitizer with freezer parts.

Prolonged contact of sanitizer with freezer may cause

corrosion of stainless steel parts.

This section covers the recommended operating proce-

dures to be followed for the safe operation of the freezer.

A. Sanitize just prior to use according to instructions

outlined in this manual.

B. Prepare the desired amount of mix and then fill each

storage container with approximately 3 gallons or

more of mix. Place a container(s) of mix in the re-

frigerated cabinet. If drawing from a storage container,

place the draw tube through the cover to the bottom

of the container. If drawing from a bag in a box, re-

move the cap, push out all of the air, and insert the

adaptor.

A. Prepare 3 gallons of sanitizing solution following

manufacturer's instructions, and pour into storage

container.

B. Place the mix pump switch in the ON position and

open air bleed valve on the front door by pushing

valve in and holding (see Figure 19).

Download from Www.Somanuals.com. All Manuals Search And Download.

The freezer is designed to dispense the product at a

reasonable draw rate. If the freezer is overdrawn, the

result will be a soft product and air pops. If this should

occur, allow the freezer to run for approximately 30

seconds before dispensing additional product. After a

while the operator will sense or feel when the freezer is

beginning to fall behind, and will slow down on the rate

of draw so as not to exceed the freezer's capacity.

Do not operate the freezer when the MIX LOW light is

on or with less than 1-3/4" (4.4 cm) of mix in the

mix container. Refill the mix container immediately.

Mix Low

Sensor

Figure 21. Refrigerated Cabinet

C. Place the mix pump switch in the ON position. The

mix pump switch is located in the upper left hand

corner, inside the refrigerated cabinet. Immediately

open the spigot and let approximately 8 ounces of

liquid mix with sanitizing solution drain out of the

spigot.

SpigotRateAdjusters

D. Close the spigot and open the air bleed valve on the

front door by pushing the valve in and holding. Allow

the barrel to fill until the mix level is 1/2" (2.7 cm)

below air bleed valve, then release valve and pull

closed to lock in place.

Figure 22. Dispensing Product

3.11MIXINFORMATION

Mix can vary considerably from one manufacturer to

another.Differencesintheamountofbutter-fatcontentand

quantity and quality of other ingredients have a direct

bearingonthefinishedfrozenproduct.Achangeinfreezer

performance that cannot be explained by a technical

problem may be related to the mix.

E. Start the compressor and drive by placing the

CLEAN-OFF-SERVE switch in the SERVE position

F. The product will be ready to serve after the compres-

sor and drive have cycled off, or in approximately

Proper product serving temperature varies from one

manufacturer's mix to another. Mixes should provide a

satisfactoryproductinthe17°to20°F(-7° to-6°C)range.

Diet andlow-carbmixestypicallyfreezetoproperconsis-

tency at higher temperatures.

minutes.

G. The refrigeration is automatically actuated when

the spigot is opened. For normal dispensing, open

the spigot no more then 90°. (This is when the

handle knob is pointed directly away from the front

door.). This position provides excellent control over

the product and aids in making desired shaped

portions. Spigot RateAdjusters are located under

the Header Panel, to the immediate right of each

Spigot Handle. Turning the Spigot RateAdjuster

clockwise will increase the dispense rate.

When checking the temperature, stir the thermometer in

the frozen product to read the true temperature.

Mix does not improve with age. Old mix, or mix that has

been stored at too high a temperature, can result in a

finished product that is less than satisfactory from the

appearanceandtastestandpoint.Toretardbacteriagrowth

indairybasedmixes, thebeststoragetemperaturerange

is between 36° to 40°F (2.2° to 4.4° C).

(see Figure 22)

Download from Www.Somanuals.com. All Manuals Search And Download.

3.12 OPERATION OF MIX PUMP

C. Theover-runadjustmentispresetatthefactory.Ifan

adjustment becomes necessary, refer to Section 4.

The pump switch is located on the front of the freezer.

WhenthepumpswitchisplacedintheONposition,themix

pump motor will be actuated to pump mix into the freezer

cylinder. Whenthesetpressureisreached, themixpump

willshutoffautomatically.Whentheswitchisplacedinthe

OFF position, the mix pump will be inoperative.

NOTICE

Any cleaning procedure must always be followed

by sanitizing before filling freezer with mix. (Refer to

section 3.3)

NOTE

3.13 MIX PUMP CLEANING

The mix pump motor is equipped with an internal

overload that will “trip”, disabling the pump when the

motor is overloaded. Consult the trouble shooting

section for corrective information.The internal over-

load will automatically reset after cooling. If the con-

dition continues, contact a qualified service person.

The mix pump is approved for CIP (clean in place) and is

thoroughlycleanedascleaningsolutionsarepumpedthru

the freezer. We recommend completely disassembling

thepumpandconnectingtubingevery14daysforinspection

ofpartstoconfirmtheCIPhasbeenproperlyperformed.If

any residue is detected clean or replace those parts as

outlinedbelow.

1. Place CLEAN-OFF-SERVE switch in CLEAN posi-

tion. Allow the auger to agitate for 5 to 10 minutes.

CAUTION

Risk of Product Damage

2. Remove suction tube from mix container. Draw off the

mix remaining in freezer barrel.

Mix pump hose must be repositioned every 1 -2 weeks

or 60 hours of operation. Failure to comply will result

in reduced mix pump liquid capacity, dispense stop-

page, popping, and possible mix pump hose leak-

age. Hose leakage may damage the pump roller as-

sembly and void the factory warranty.

3. Pump 2 gallons (7.5 liters) of cold potable water thru

freezer until water at spigot is free of mix.

4. Pump 2 gallons (7.5 liters) of 90° to 110°F (32°C to

43°C) detergent solution water thru freezer. The use

of soft water is recommended, along with dishwashing

detergents such as “Joy,” “Dawn,” or equivalent.

A. Mix Operation: The peristaltic mix pump contains

onecontinuousmixpumphose.Whenlookingatthe

face of the peristaltic mix pump, the left side of the

hose is the suction or pickup. The right side of the

hose is the discharge. Mix is drawn up the suction

side of the hose and transferred thru the discharge

side to the freezer (see Figure 23).

5. Place mix pump switch in OFF position. Open spigot

to relieve remaining pressure.

6. Place CLEAN-OFF-SERVE switch in OFF position.

B. AirOperation:Theaircompressoroperateswhenever

the peristaltic mix pump is running. Air enters thru a

check valve on the piston downstroke. The air is

discharged thru a second check valve, on the piston

upstroke. The air and mix join at the tee and then

traveltothefreezer.

3.14 DISASSEMBLY AND INSPECTION OF

REMOVABLE PARTS

Inspection of removable parts should be made whenever

maintenance is performed or pump requires disassembly.

WARNING

Hazardous Moving Parts

Hose

Holder

Mix

Discharge

Revolvingpumpheadcangrab, mangle, andcause

serious crushing injury. The Power switch must be

placed in the OFF position for cleaning and power

must be disconnected when disassembling or

Mix

Intake

servicing.

CAUTION

3-way Tee

System Under Pressure

Never disconnect hoses from freezer or pump without

first opening spigot to relieve pressure.

Figure 23. Mix Pumps

Download from Www.Somanuals.com. All Manuals Search And Download.

NOTE

9. Sanitize assembled freezer as per instructions

outlined in Section 3.9).

If the mix lines or air line is difficult to remove, soften

with a rag soaked in hot water. Hose connections

may be sprayed with Haynes Sanitary Lubricant for

ease of removal. Do not loosen or remove the mix

pump cover wingnuts. Maintain the mix pump hose

in its operational condition.

1. Loosen clamp and remove air hose from pump

compressor.

2. Loosen clamp and disconnect mix pump hose.

Remove the pickup hose, mix check valve and pickup

hose adapter (and bag adapter if applicable) as an

assembly from mix container.

3. Completely disassemble both hose assemblies and

check valve. Place hoses, tee, check valve assem-

bly, and pickup hose adapter in 90° to 110°F (32°C to

43°C), mild detergent water and wash thoroughly. Use

soft bristle brushes to clean inside of fittings. Rinse

all parts in clean 90° to 110°F (32°C to 43°C) water

(see Figure 24).

Figure 25. Cleaning Air Tube

4. Carefully inspect each part for wear or damage.

Replace worn or damaged parts.

5. Wash feed tube and air tube with 90° to 110°F deter-

gent water and brushes provided. Rinse with clean,

90° to 110°F water (See Figure 25 and 26).

6. Prepare two gallons (7.5 liters) of sanitizing solution

using a USDA certified grade sanitizing solution.

Sanitize all removed parts, then air dry.

Figure 26. Cleaning Feed Tube

7. Check Hose Service Record decal to determine if

hose reposition or replacement is required at this

time.

Pump

Compressor

8. Reassemble both hose assemblies per the diagram

located on the inside of the cab door. Reconnect

assemblies to the pump and discharge hose, using

the clamps. (See Figure 27 or refer to Section 2.5 Mix

Pump).

Figure 24. Removable Parts

Figure 27. Mix Pump Tube Routing

Download from Www.Somanuals.com. All Manuals Search And Download.

SECTION 4

MAINTENANCE INSTRUCTIONS

4.1 FREEZER ADJUSTMENT

Themixpumphasbeenpresetatthefactorytoproducea

This section is intended to provide maintenance person- product with approximately 40% overrun. Because of

nel with a general understanding of the freezer adjust- differences in mix formulation, temperatures and baro-

ments. It is recommended that any adjustments in this metric pressure, this figure may vary. It will be necessary

section be made by a qualified person.

for approximately 2 gallons (7,5 liters) of mix to be

pumped thru the freezer before changes in the product

are noticeable due to adjustments in overrun.

4.2 PRODUCT TEMPERATURE ADJUSTMENT

A potentiometer is used to control the product tempera-

ture.Tochangethetemperatureoftheproduct,followthe Overrun is controlled by the length of the air compressor

steps below:

piston stroke within the piston cylinder. Lengthening the

stroke within the cylinder will increase overrun. Con-

versely, shortening the stroke will decrease overrun. To

perform an overrun adjustment, refer to the following

procedure:

A. Loosen the two screws under the header display

sign, then pull sign out and down.

B. Use a screw driver to make desired adjustment. A

label near the potentiometer will give complete in-

structions. Figure 28.

A. Turn the mix pump switch to the OFF position.

Disconnect both power sources/circuit breakers.

B. Remove the lower back panel from freezer.

C. On air compressor side of pump, locate the long/

slender piston rocking arm. The rocking arm down-

ward travel is limited by a stationery cam. On the face

of the cam there is an overrun setting indicator plate

numbered 3 thru 8 and an adjustment knob. Figure

29.

Figure 28. Potentiometer

4.3 OVERRUN ADJUSTMENT

The product when served is a combination of air and mix.

Overrunisameasureoftheamountofairblendedintothe

mix.

Overrun Adjustment

Overrun can be expressed in terms of the amount of

weight loss for a given volume. For example, if a pint of

liquid mix weighs 18 ounces (510 grams) and a pint of

frozen product with air added weighs 12 ounces (340

grams), the overrun is said to be 50 percent "18 oz. (510

grams) - 12 oz. (340 grams) = 6 oz. (170 grams)", (6 /12)

x 100 = 50%.

Figure 29. Overrun Adjustment

D. The overrun setting is indicated by a pointed pin.

E. To adjust overrun, loosen the allenhead screw

(located within the center of the adjustment knob)

with the 5/32" (4mm) allen wrench provided. Rotate

the adjustment knob counterclockwise to a higher

number for higher overrun, or clockwise to a lower

number for lower overrun. Each number multiplied by

10 represents the overrun percentage (ie: #4 = 40%

overrun).

The overrun can be checked by placing a one pint

containeronanicecreamscaleandzeroingoutthescale.

Then fill a one pint container with frozen product. The

container should be filled over the top and leveled with a

straightedge. The product should not contain any air

pockets. When weighed on an ice cream scale, one pint

(473 milliliters) of product should weigh 12 to 13 ounces

(340 to 368,5 grams).

Download from Www.Somanuals.com. All Manuals Search And Download.

F. Tighten the allen screw, then place the wrench back

in its clip. Replace the lower back panel and secure

with the four screws. Turn the mix pump power switch

to the ON position.

CAUTION

NEVER DISCONNECT HOSES FROM FREEZER

OR PUMP WITHOUT FIRST OPENING SPIGOT

TO RELIEVE PRESSURE.

3. Disconnect mix pump hose at each end.

4.4. MIX PUMP HOSE REPOSITION (every one or

two weeks.)

4. Grasp the discharge hose end with one hand

and turn the pump on. Pull down on the hose

until all of the remaining hose is removed from

the pump.

NOTE

Mix pump hose must be repositioned every 1 - 2

weeks. Failure to comply will result in reduced mix

pump liquid capacity, dispense stoppage, popping,

and possible mix pump hose leakage.

5. Connect new mix pump hose to pick-up hose

adapter, using small clamp.

6. Insert free end of hose into the pick-up (suction

side) hose side of the black cover. Gently push

the hose into the black cover until it begins to

self-feed. Allow the hose to feed itself through

the pump until the pick-up hose adapter pre-

vents further feeding, then turn the pump off.

1. Run cleaning solution through pump.

2. Turn pump off and relieve any pressure by

opening the spigot.

3. Grasp the pick-up hose end of the mix pump

hose with one hand and turn the pump on. Pull

down on the pick-up hose end until 12 to 14"

(30-1/2 to 35-1/2cm) of tubing has reverse fed

through the pump, then turn the pump off.

7. Reconnect mix pump hose to T using small

clamp. Pump is now ready to sanitize.

4.6 CAB TEMPERATURE ADJUSTMENT

Atemperaturecontrolisusedtocontrolcabtemperature.

To change the temperature, disconnect electrical power

and then follow the steps below:

4. Loosen small clamp at the pick-up hose

adapter and (Viewed from Back) disconnect

mix pump hose.

A. Remove the six screws holding the left side panel

and remove panel.

5. Cut 7-1/2" (19 cm) off the end of the mix pump

hose.

B. Use a small screwdriver to adjust the temperature

control. Turn counterclockwise for a warmer tem-

perature and clockwise for a colder temperature. It

will take about an hour for the cab temperature to

change. Figure30.

6. Reconnect mix pump hose to adapter.

7. Continue normal operation. Mix hose will

automatically reposition itself with adapter near

black cover.

NOTE

Each hose is long enough for 3 repositions before

replacement is required. Record each event on

Hose Service Record decal.

4.5 MIX PUMP HOSE REPLACEMENT

NOTE

Mix pump hose must be replaced when tubing can-

not be further repositioned (every four to eight

weeks). Failure to comply will result in hose failure

and possible pump damage.

Figure 30. Temperature Control Cab

1. Run cleaning solution through pump.

C. Install side panel and secure with the six retaining

screws.

4.7DRIVEBELTTENSIONADJUSTMENT

To check belt tension, refer to Figure 29 and follow the

steps below:

2. Turn pump off and relieve any pressure by

opening the spigot.

WARNING

THE MIX PUMP SWITCH MUST BE IN THE

“OFF” POSITION WHEN SERVICING OR

CLEANING PUMP.

DISCONNECT ELECTRICAL SUPPLY TO

FREEZER BEFORE SERVICING.

Download from Www.Somanuals.com. All Manuals Search And Download.

A. Remove either side and back panels.

B. Press firmly on one belt. Figure 31.

NOTE

If the condenser is not kept clean, loss of refrigera-

tion efficiency will result.

4.9 PREVENTATIVE MAINTENANCE

Itisrecommendedthatapreventativemaintenancesched-

ule be followed to keep the freezer clean and operating

properly. The following steps are suggested as a preven-

tative maintenance guide.

WARNING

NEVER ATTEMPT TO REPAIR OR PERFORM

ANY MAINTENANCE ON FREEZER UNTIL ALL

MAIN ELECTRICAL POWER HAS BEEN DIS-

CONNECTED.

The United States Department of Agriculture and the

Food and Drug Administration require that lubricants

usedinfoodzonesbecertifiedforthisuse. Uselubricants

only in accordance with the manufacturer's instructions.

Figure 31. Belt Adjustment

C. When the tension is properly adjusted, the outside

of the depressed belt should be approximately in

line with the inside of the other belt.

A. Daily Checks

Check for any unusual noise or condition and repair

immediately.

D. If an adjustment is necessary, loosen the four motor

plate retaining nuts, adjust belt tension then re

tighten the four nuts.

B. Month Checks

1. Check drive belts for wear and tighten belts if

necessary. (Refer to Section 4.7.)

NOTE

Belt life will be increased if new drive belts are tight-

ened after two or three weeks of operation.

2. Check the condenser for dirt. (Refer to Section

4.8).

4.8 CONDENSER CLEANING (AIR-COOLED

FREEZERS)

The condenser requires periodic cleaning. To clean the

condenser, refer to the following steps:

WARNING

NEVER ATTEMPT TO REPAIR OR PERFORM

MAINTENANCE ON FREEZER UNTIL ALL MAIN

ELECTRICAL POWER HAS BEEN DISCON-

NECTED.

NOTE

Some freezers have a condenser filter, to clean re-

move and wash in warm soapy water. Rinse in clean

water and shake dry, taking care not to damage

filter in any way.

4.10 EXTENDED STORAGE

Refer to the following steps for winterizing the freezer or

for storing the freezer over any long period of shutdown

time.

A. Visually inspect the condenser for dirt.

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.

B. If the condenser is dirty, place a wet towel over the

condenser.

NOTE

Do not let cleaning solution stand in freezer barrel

or mix pump during the shutdown period.

C. Using compressed air or CO2 tank, blow out the dirt

from the back of the condenser. Most of the dirt will

cling to the wet towel.

B. Remove, disassemble, and clean the front door,

auger shaft, and mix pump. Leave disassembled

during the shutdown period.

CAUTION

THIS PROCEDURE EMITS A LOUD NOISE.

C. Place plastic auger flights in a plastic bag with a

moist paper towel. This will prevent flights from

becoming brittle if exposed to dry air over an

extended period of time (over 30 days).

D. An alternative method is to clean with a condenser

brush and vacuum.

Download from Www.Somanuals.com. All Manuals Search And Download.

D. For water-cooled freezers that are left in unheated

buildings, or buildings subject to freezing, the water

must be shut off and disconnected. Disconnect

fittings at water valve inlet and water outlet lines at

the freezer. The fittings are located at the rear of the

freezer. Run the compressor for 2 - 3 minutes to

open water valve. Blow out all water, first through

water inlet, then through water outlet lines with air or

carbon dioxide. Also drain water supply line to the

freezer.

E. Place the mix pump ON-OFF switch, and the

CLEAN-OFF-SERVE switch in the OFF position.

F. Disconnect from the source of electrical supply in

the building.

4.11 TROUBLESHOOTING

The Troubleshooting Table lists the common problems

that can occur to the freezer.

Download from Www.Somanuals.com. All Manuals Search And Download.

FREEZER

PROBLEM

FREEZER POSSIBLE CAUSE

REMEDY

Drive motor (auger)

"kicks-out", or does

not run.

1. Power to freezer is off.

2. Drive motor overloaded.

1. Check power to freezer.

2. Wait 15-20 min. for Thermo overload

to reset.

3. Low line voltage.

3. Check, must be +\-10% of

nameplate voltage.

4. Product too hard.

4. Raise overrun and/or product

temperature. (See Section 4.3 or 4.2)

5. Install front door securely.

5. Front door not installed securely.

Compressor does not

operate.

1. Power to freezer if off.

2. Drive motor overloaded.

1. Check power to freezer.

2. Wait 15-20 min. for Thermo overload to

reset.

3. Low line voltage.

3. Check, must be +/-10% of nameplate

voltage.

4. Compressor internal overload is

cut-out.

5. Front door not installed securely.

4. Check condenser (air cooled)(See Sect.

4.8), or water suppy (water cooled).

5. Install front door securely.

Product too soft.

1. Temperature setting is too high.

2. Product break down.

3. Standby/Serve Switch in Standby

position.

1. Adjust temperature. (See Section 4.2)

2. Fill with fresh product.

3. Place Standby/Serve Switch in Serve

position.

Freeze-up. (Product

will not dispense

easily.)

1. Temperature setting is too low.

2. Low overrun setting.

3. Low pump pressure.

1. Adjust temperature. (See Section 4.2)

2. Raise overrun. (See Section 4.3)

3. Check pump pressure.

4. Large air pocket in barrel.

5. Auger turning counter-clockwise.

4. Purge air from barrel.

5. Change rotation to clockwise.

Rear auger seal leaks. 1. Rear auger seal not lubricated.

2. Seal missing or installed wrong.

1. Lubricate seal. (See Section 3.8)

2. Check. (See Section 3.8)

3. Replace shaft.

3. Worn or scratched shaft.

Spigot leaks.

1. Spigot parts are not lubricated.

2. Chipped or worn o-rings.

1. Lubricate. (See Section 3.8)

2. Replace O-rings.

3. O-rings on spigot installed wrong.

4. Nicks or scratched on front door

where spigot is located.

3. Remove spigot and check O-rings.

4. Replace front door.

Drive belts slipping or

squealing.

1. Drive belt tension not correct.

2. Worn belt(s).

1. Adjust belt tension. (See Section 4.7)

2. Replace belts.

3. Temperature setting is too low.

4. Low overrun.

3. Adjust temperature. (See Section 4.2)

4. Check for air leak.

Mix temperature too

warm in cab.

1. System low on refrigerant.

2. Temperature control set too

warm.

1. Add refrigerant. (Refrig. Service)

2. Remove left side panel and locate

temperature control and follow

instructions on decal.

Mix temperature too

cold in cab.

1. Temperature control set too cold.

1. Remove left side panel and locate

temperature control and follow

instructions on decal.

Download from Www.Somanuals.com. All Manuals Search And Download.

MIX PUMP

1. PUMP MOTOR DOES NOT RUN

Power to pump is off.

Supply power to pump.

Low voltage.

Check for low line voltage.

Mix pump hose jammed inside black cover/clamp.

Disconnect pump from power source. Remove four

cover/clamp thumb screws. Separate cover/clamp

halves and remove outer half. Remove jammed hose.

Re-install cover/clamp and tighten four thumb screws

securely. Allow motor thermal overload to reset. See

Sec. 2.5 for hose replacement. Do not use jammed

portion of hose.

Pump motor overloaded.

Allow internal thermal overload to reset; determine

overload cause and repair.

Pressure switch on pump is defective.

Defective motor/capacitor

Contact your local Stoelting Distributor.

Defective toggle switch.

2. PUMP OPERATES BUT CYLINDER WILL NOT FILL

NOTE 1: A PROPERLY WORKING PUMP WILL FILL AN 8 OZ. CUP WITH MIX IN ABOUT 9 SECONDS.

NOTE 2: IMMEDIATELY AFTER A "BAG CHANGE" THE PUMP MAY BE UNABLE TO RE-ESTABLISH IT'S

PRIME WITH THE SYSTEM AT OPERATING PRESSURE. IN THIS CASE, TURN THE PUMP OFF. DRAW 2-3

PINTS TO REDUCE SYSTEM PRESSURE TO ZERO. TURN PUMP ON. PURGE REMAINING AIR IN MIX BAG

AND PICK-UP HOSE.

IMPORTANT: Before connecting the pick-up hose to the mix bag, purge the mix bag of air to the extent

possible.

Out of Mix.

Replenish mix supply.

MIx pump hose kinked inside black cover/clamp.

Hoses assembled incorrectly.

Mix pump hose service life is exceeded.

Mix pump hose not connected to freezer.

Ice crystals in mix.

Follow mix pump hose jammed repair. (See #1 above.)

Refer to diagram for correct hose connections.

Reposition/replace mix pump hose. See Sec. 2.5.

Connect mix pump hose to freezer.

Completely thaw mix prior to use.

Mix bag drawn against adapter.

Foreign objects in mix.

Assure bag is clear of pick-up tube.

Clear blockage. Use fresh mix.

Mix Check Valve is installed backwards.

3. OVERRUN TOO LOW OR NO OVERRUN

Overrun setting too low.

Observe flow arrow for proper orientation.

Increase overrun setting.

Air leak.

Tighten all hose clamps.

Air compressor not pumping air.

4. OVERRUN TOO HIGH

Contact local Stoelting Distributor.

Mix pump hose service life is exceeded.

Out of mix.

Reposition/replace mix pump hose.

Replenish mix supply.

Overrun setting too high.

Decrease overrun setting.

See Section 2.5.

Pick-up leg of mix pump hose is collapsing.

NOTE: ALSO SEE "2" ABOVE.

Download from Www.Somanuals.com. All Manuals Search And Download.

5. REPLACEMENT MIX PUMP HOSE WON'T FEED THROUGH PUMP

Feeding hose into discharge hole of mix pump cover.

Hose ends not cut squarely.

Feed hose into pick-up side of cover.

Carefully cut hose end off squarely (no tails).

Force feeding too quickly.

Gently and slowly assist feeding of hose up into pick-up

hose side of cover.

Pump motor not running.

Turn on motor switch. Also see Item 1 above.

6. AIR EXITING MIX PICK-UP HOSE

Pickup tube check valve missing.

7. DISPENSED PRODUCT AIR "POPS"

Overrun setting too high.

Contact local Stoelting Distributor.

Reposition/replace mix pump hose.

Reduce dispense rate.

Mix pump hose service life is exceeded.

Overdrawing the freezer's capacity.

Recent "mix-out" condition.

Open spigot fully and allow excess air to "belch" out.

NOTE: ALSO SEE 2 & 4 ABOVE.

8. MIX LEAKAGE FROM PUMP

CAUTION: To prevent mix pump damage from dried mix deposits, immediately disassemble and clean

pump.

Mix pump hose service life is exceeded.

Remove mix pump hose. Disconnect pump from power

source. Remove mix pump cover/clamp. THOROUGHLY

rinse three squeeze rollers using a spray bottle filled

with hot water. Thoroughly clean all mix from pump. See

Sec. 2.5 for hose replacement.

9. PUMP HAS POOR CAPACITY

Lift and run limits are exceeded.

NOTE: Also see 2, 4, 6 & 7.

Pump is limited to 10' lift, 20' run.

10. PUMP IS NOISY/SQUEAKING

NOTE: THE ACTION OF THE AIR COMPRESSOR ROCKING ARM CREATES A REPETITIVE CLICKING

SOUND DURING OPERATION. THIS IS NORMAL.

11. MIX IN AIR HOSES

Air/mix tee above black cover/clamp.

Air leak.

Air/mix tee must be below black cover/clamp.

Tighten all hose clamps.

Mix hose on wrong air/mix tee fitting.

Refer to diagram for correct hose connections.

Download from Www.Somanuals.com. All Manuals Search And Download.

SECTION 5

HOW TO ORDER REPLACEMENT PARTS

5.1HOWTOORDERREPLACEMENTPARTS

To assure the receipt of the proper replacement parts,

C. Part number, part name, and quantity needed.

supplyyourservicepersonwiththefollowinginformation: 5.2PARTSLISTANDREFERENCEDRAWINGS

The following lists and drawings will aid the user when

A. Modelnumberofequipment.

orderingpartsorservicing.

B. Serial number of model (stamped on nameplate)

Item Stoelting P/N Qty.

Description

2177427

2177072

2177073

2177074

232734

624677

2177588

624654

2158070

2159688

2157869

232732

Door (Side ID Grooves)

38mm (1.5 inch) Spigot Ext.

64mm (2.5 inch) Spigot Ext.

76mm (3 inch) Spigot Ext.

Rosette Cap

1158091

3159696

3158086

624598

624664

625133

508135

482019

624614

624520

694200

482004

2110116

Actuator, Door Safety

Spigot, Outside

Spigot, Center

O-Ring

O-Ring (CS)

O-Ring (Silicone)

Lubricant, Petrogel

Knob Black

O-Ring (CS)

O-Ring

Spring Comp.

Knob

Castle Top O-Ring

Door w/Pins - CE

AsReq

"O" Ring Spigot Extension

38mm (1.5 inch) Spigot Ext.

64mm (2.5 inch) Spigot Ext.

76mm (3 inch) Spigot Ext.

RosetteCap

Valve Stem

NOTE

If you are replacing a front door without side grooves

you mustorder the extensions and rosettes also.

Download from Www.Somanuals.com. All Manuals Search And Download.

AUGER PARTS

Drawing

Part

Index No.

Number

Qty.

Description

2104552

149003

381804

694255

4151178

624678

1151859

667868

Auger Front Support

Front Bearing

Plastic Flight

Spring

Auger

Rear Seal "O" Ring

Rear Seal Adaptor

Rear Seal

MISCELLANEOUS PARTS

Description

Part No.

Haynes Spray 12 oz.(340 grams) -------------------- 508017

Petro-Gel Tube 4 oz. (113 grams) --------------------508135

Spline Lubricant 2 oz. (57 grams) --------------------508048

Brush 4"x 8"x16" (10cm x 20cm x 40,5cm) -------208135

Brush 2.5"x 4"x12" (6,5cm x 10cm x 30,5cm)---- 208146

Brush .25"x 4"x14" (,6cm x 10cm x 35,5cm) ----- 208380

Brush 1"x3.5"x18" (2,5cm x 9cm x 45,5cm) ------208465

Drip Tray --------------------------------------------------- 744273

Drip Tray Grid --------------------------------------------- 417006

Download from Www.Somanuals.com. All Manuals Search And Download.

Figure 7. Mix Pump

Download from Www.Somanuals.com. All Manuals Search And Download.

DECALS

Qty.

Part Number

Description

324200

324798

324797

324800

324799

324141

324509

324014

324686

723525

324106

H.P. Manual Reset

Clean-Off-Serve

Standby/Serve

Cab Off-On

Pump Off On

Caution, Haz. Rot. Blade - Front Panel

Cleaning - Right Side

Auger Rotation - Evap. Enclosure Rear

Danger - Start Auto, on Evap. Support between belts & motors support brkt.

Winterizing, Attach to water hose near bottom

Caution - Elec. Wiring Mat'ls must conform between water couplings, one rear

panel bottom

324346

324107

324208

723552

723517

Caution - Haz. Mov. Parts, on inside of mtr support brkt @ rear

Caution - Haz. Mov. Parts, on cond. bkt. rear & (2) on evap. enclosure sides

Attn - Ref. Lk Chk, on evap. enclosure sides

Tag - Supply volt., inside J-Box

Card - Inside one J-Box

ID Tags, Back Panel Top

324548

Add. Vent Back Panel Ctr Top

Made in U.S.A. - Back panel

324103

324151

324125

324242

324565

324158

324566

130000

324065

324803

324804

324806

Caution - Rot. Shaft, on gearbox support bracket

Field Connections, J-Box cover, outside

Danger Elec.Shock, J-Box covers outside, back panel bottom

Warm/Cold, @ T-Stat

Night/Serve - Temp. Control Bracket

Use copper cond. only, inside both J-boxes

Wired According to, on elec. schematic envelope

Elec. Schematic Envelope

Water Inlet - Back panel above inlet coupling

Header Panel Decal (Stoelting Logo)

Header Panel Decal (Stoelting Swirl)

Header Panel Decal (A & W Logo)

Download from Www.Somanuals.com. All Manuals Search And Download.

WARRANTY

SOFT SERVE / SHAKE FREEZERS

1. Scope:

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

speed reducers, auger and auger flights of Stoelting soft serve / shake freezers will be free from defects in materials

and workmanship under normal use and proper maintenance appearing within five (5) years, and that all other

components of such equipment manufactured by Stoelting will be free from defects in material and workmanship

under normal use and proper maintenance appearing within twelve (12) months after the date that such equipment is

originally installed.

2. Disclaimer of OtherWarranties:

THISWARRANTYISEXCLUSIVE;ANDSTOELTINGHEREBYDISCLAIMSANYIMPLIEDWAR-

RANTYOFMERCHANTABILITYORFITNESSFORPARTICULARPURPOSE.

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 obliga-

tions/remedies are subject to the conditions that Buyer (a) signs and returns to Stoelting, upon installation, the

Checklist/Warranty Registration Card for the affected equipment, (b) gives Stoelting prompt written notice of any

claimed breach of warranty within the applicable warranty period, and (c) delivers the affected equipment to Stoelting

or its designated service location, in its original packaging/crating, also within that period. Buyer shall bear the cost

and risk of shipping to and from Stoelting’s plant or designated service location.

4. Exclusions and Limitations:

This warranty does not extend to parts, sometimes called “wear parts”, which are generally expected to deteriorate

and to require replacement as equipment is used, including as examples but not intended to be limited to o-rings,

auger seals, auger support bushings and drive belts. All such parts are sold

AS IS.

Further, Stoelting shall not be responsible to provide any remedy under this warranty with respect to any component

that fails by reason of negligence, abnormal use, misuse or abuse, use with parts or equipment not manufactured or

supplied by Stoelting, or damage in transit.

THEREMEDIESSETFORTHINTHISWARRANTYSHALLBETHESOLELIABILITYSTOELTING

AND THE EXCLUSIVE REMEDY OF BUYER WITH RESPECT TO EQUIPMENT SUPPLIED BY

STOELTING;AND IN NO EVENTSHALLSTOELTINGBE LIABLE FORANYINCIDENTALOR

CONSEQUENTIALDAMAGES, WHETHER FOR BREACH OFWARRANTYOR OTHER CON-

TRACTBREACH, NEGLIGENCEOROTHERTORT, ORONANYSTRICTLIABILITYTHEORY.

Download from Www.Somanuals.com. All Manuals Search And Download.

Sentry Industries Universal Remote 0 80068 65020 1 User Manual
Sharp Computer Accessories PNSV01 User Manual
Shure Satellite Radio P4R User Manual
Snapper Snow Blower 555M 555M 15225 E15225 18245E E18245 860E 860M User Manual
Sony CRT Television KV 27FS200 User Manual
Star Micronics Printer LC24 15 User Manual
StorageTek Switch SCSI 3 User Manual
Sylvania DVD Player DVL100E User Manual
Sylvania TV VCR Combo SRC2113 User Manual
System Sensor Smoke Alarm A05 1003 002 User Manual