Stoelting 4231G Service Manual
Model 4231G & 4231H
OPERATORS MANUAL
Manual No. 513534 Rev.3
This manual provides basic information about the machine. Instructions and suggestions are
given covering its operation and care.
The illustrations and specifi cations are not binding in detail. We reserve the right to make
changes to the machine without notice, and without incurring any obligation to modify or provide new parts for machines built prior to date of change.
DO NOT ATTEMPT to operate the machine until instructions and safety precautions in this
manual are read completely and are thoroughly understood. If problems develop or questions
arise in connection with installation, operation, or servicing of the machine, contact Stoelting.
stoeltingfoodservice.com
Stoelting Foodservice Equipment
502 Highway 67
Kiel, WI 53042-1600
U.S.A.
Main Tel: 800.558.5807
Fax: 920.894.7029
Customer Service: 888.429.5920
Fax: 800.545.0662
Email: foodservice@stoelting.com
© 2014 PW Stoelting, LLC
A Few Words About Safety
Safety Information
Read and understand the entire manual before
operating or maintaining Stoelting equipment.
This manual provides the operator with information
for the safe operation and maintenance of Stoelting
equipment. As with any machine, there are hazards
associated with their operation. For this reason safety
is emphasized throughout the manual. To highlight
specifi c safety information, the following safety defi ni-
tions are provided to assist the reader.
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and
their explanations, deserve your careful attention
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions
or warnings they give are not substitutes for proper
accident prevention measures.
If you need to replace a part, use genuine Stoelting
parts with the correct part number or an equivalent
part. We strongly recommend that you do not use
replacement parts of inferior quality.
Safety Alert Symbol:
This symbol Indicates danger, warning or caution.
Attention is required in order to avoid serious personal injury. The message that follows the symbol
contains important information about safety.
Signal Word:
Signal words are distinctive words used throughout
this manual that alert the reader to the existence and
relative degree of a hazard.
WARNING
The signal word “WARNING” indicates a potentially
hazardous situation, which, if not avoided, may result
in death or serious injury and equipment/property
damage.
CAUTION
The signal word “CAUTION” indicates a potentially
hazardous situation, which, if not avoided, may result
in minor or moderate injury and equipment/property
damage.
CAUTION
The signal word “CAUTION” not preceded by the
safety alert symbol indicates a potentially hazardous
situation, which, if not avoided, may result in equipment/property damage.
NOTE (or NOTICE)
The signal word “NOTICE” indicates information or
procedures that relate directly or indirectly to the
safety of personnel or equipment/property.
TABLE OF CONTENTS
Section Description Page
1 INTRODUCTION .................................................................................................1
1.1 Description...........................................................................................................1
1.2 Specifications.......................................................................................................2
2 OPERATING INSTRUCTIONS............................................................................3
2.1 Safety Precautions...............................................................................................3
2.2 Shipment and Transit ...........................................................................................4
2.3 Freezer Installation ..............................................................................................4
2.4 Electrical Connections .........................................................................................5
3 INTIAL SET-UP AND OPERATION ....................................................................7
3.1 Operator’s Safety Precautions .............................................................................7
3.2 Operating Controls and Indicators .......................................................................7
3.3 Sanitizing .............................................................................................................9
3.4 Freeze Down and Operation................................................................................10
3.5 Mix Information ....................................................................................................11
3.6 Removing Mix from Freezer.................................................................................11
3.7 Cleaning the Freezer ...........................................................................................12
3.8 Disassembly of Freezer Parts..............................................................................12
3.9 Cleaning the Freezer Parts ..................................................................................14
3.10 Sanitize Freezer and Freezer Parts .....................................................................14
3.11 Assembly of Freezer ............................................................................................14
3.12 Routine Cleaning .................................................................................................16
4 MAINTENANCE INSTRUCTIONS.......................................................................17
4.1 Preventative Maintenance ...................................................................................17
4.2 Freeze-up ............................................................................................................18
4.3 Condenser Service ..............................................................................................18
4.4 Extended Storage ................................................................................................18
4.5 Troubleshooting ...................................................................................................19
5 REPLACEMENT PARTS ....................................................................................21
5.1 How to Order Parts ..............................................................................................21
5.2 Push to Freeze Light/Switch Lamp Replacment...................................................21
5.3 Clean-Off-On Rocker Switch Replacement..........................................................21
5.4 Replacement Parts & Reference Drawings..........................................................22
LIST OF ILLUSTRATIONS
Figure Description Page
1 Model 4231G Freezer ....................................................................................................... 1
2 Specifications....................................................................................................................1
3 Warning and Label Locations............................................................................................ 3
4 Space and Ventilation Requirements ................................................................................4
5 Leveling Freezer ...............................................................................................................5
6 Caster Adjustment ............................................................................................................ 5
7 Connecting Permanent Wiring ..........................................................................................5
8 Danger Decal.................................................................................................................... 5
9 Controls ............................................................................................................................7
10 Mix Inlet Regulator ............................................................................................................ 9
11 Sanitizing Procedure .........................................................................................................9
12 Clean Control.................................................................................................................... 9
13 Sanitizing Hopper.............................................................................................................. 9
14 Spigot Opened and Solution Draining ...............................................................................10
15 Pouring the Mix .................................................................................................................10
16 Dispensing Product...........................................................................................................10
17 Skimming the Foam .......................................................................................................... 11
18 Removing Mix Inlet Regulator ........................................................................................... 11
19 Draining Mix......................................................................................................................12
20 Auger Flight Wear & Front Auger Support Wear ...............................................................12
21 Removing Front Door........................................................................................................13
22 Removing Spigot...............................................................................................................13
23 Removing Auger Supports ................................................................................................13
24 Auger Shafts.....................................................................................................................13
25 Removing “O” Ring ...........................................................................................................13
26 Cleaning Freezer Barrel....................................................................................................14
27 Exploded View of Auger.................................................................................................... 15
28 Exploded View of Front Door ............................................................................................ 15
29 Installing Mix Inlet Regulators ........................................................................................... 16
30 Drain Trays ....................................................................................................................... 16
31 Skimming Hopper .............................................................................................................17
32 Sanitizing Mix Inlet Regulators (Carburetor)......................................................................17
33 Push to Freezer Light/Switch Assembly............................................................................ 21
34 Spigot, Front Door and Auger Assembly...........................................................................22
SECTION 1
INTRODUCTION
1.1 DESCRIPTION
The Stoelting® 4231G freezer is gravity fed. The freezer
is equipped with fully automatic controls to provide a
uniform product. The freezer is designed to operate
with almost any type of commercial soft serve or nondairy 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 insulation, operation
and maintenance of the Stoelting Model 4231 gravity
freezer.
Information Packet Location
Model 4231G . . . . . . . RIGHT SIDE
Figure 1. Model 4231G Freezer
Figure 2. Specifications
1
1.2 SPECIFICATIONS
MODEL 4231G
FLOOR MODEL
GRAVITY FREEZER
DIMENSIONS
Freezer: 25.90” (65.81 cm) wide x 30.20” (76.7 cm)
deep x 60.80” (154.4 cm) high
Crated: 38.00” (96.5 cm) wide x 64.00” (162.5 cm) deep
x 70.00” (178.0 cm) high
WEIGHT
Freezer: 640 lbs. (291 kg)
Crated: 815 lbs. (370 kg)
ELECTRICAL
Refer to the nameplate located on the rear of the
Freezer.
COOLING
Air-cooled requires 3” (7.6 cm) clearance for all louvered
panels. Water-cooled requires ½” pipe or 5/8” inside
diameter copper water in be installed for adequate
water supply.
HOPPER CAPACITY
Two hoppers, 5.6 gallons (21 liters) each, refrigerated
and insulated.
2
SECTION 2
INST ALLA TION INSTRUCTIONS
2.1 SAFETY PRECAUTIONS
Do not attempt to operate the freezer until the safety
precautions and operating instructions in this manual
are read completely and are thoroughly understood.
Take notice of all warning labels on the freezer (Fig. 3).
The labels have been put there to help maintain a safe
working environment. The labels have been designed
to withstand washing and cleaning. All labels must
remain legible for the life of the freezer.
Labels should be checked periodically to be sure they
can be recognized as warning labels.
If danger, warning or caution labels are needed, indicate
the part number, type of label, location of label, and
quantity required along with your address and mail to:
STOELTING, LLC
ATTENTION: Customer Service
502 HWY 67
Kiel, Wisconsin 53042-1600
Figure 3. Warning Label Locations
3
2.2 SHIPMENT AND TRANSIT
The freezer has been assembled, operated and
inspected at the factory. Upon arrival at the final
destination, the freezer must be checked for any damage
that may have occurred during transit.
With the method of packaging used, the freezer should
arrive in excellent condition. THE CARRIER IS
RESPONSIBLE FOR ALL DAMAGE IN TRANSIT,
WHETHER VISIBLE OR CONCEALED. Do not pay the
freight bill until the freezer has been checked for damage.
Have the carrier note any visible damage on the freight
bill. If concealed damage and/or shortage are found
later, advise the carrier within 10 days and request
inspection. The customer must place claim for damages
and /or shortages in shipment with the carrier. Stoelting,
Inc. cannot make any claims against the carrier.
2.3 FREEZER INSTALLATION
NOTE
For Air Cooled Unit Only.
A rear block-off panel has been provided to prevent
recirculation of hot air beneath the freezer. The rear
block-off panel maximizes the efficiency of the freezer.
See the illustration for the installation instructions.
1. Remove both back panel mounting screws below
the bottom most louver.
2. Attach rear block-off panel to the back panel using
the same screws as shown.
ÅÅ
Å
ÅÅ
Bottom Most Louver Of Back Panel
ÅÅ
Å
ÅÅ
Back Panel Mounting Screw
ÇÇ
Ç
ÇÇ
Rear Blockoff Panel
CAUTION
FAILURE TO INST ALL THE FREEZER WITHIN
RECOMMENDED LIMITS WILL RESULT IN
POOR PERFORMANCE OF THE SYSTEM,
PREMATURE COMPONENT FAILURE AND
CANCELLATION OF WARRANTY.
Installation of the freezer involves moving the unit close
to its permanent location, removing all protective
packaging, setting in place and cleaning.
CAUTION
REMOVE LOWER FRONT PANEL BEFORE
REMOVING FREEZER FROM SKID.
A. The freezer requires adequate ventilation. A minimum
of 3” (7.6 cm) of vent space is required for free flow
of cooling air at the front and back (Fig. 4).
A water-cooled freezer requires an adequate water
supply, install 3/8 inch pipe or ½ inch inside diameter
copper water line to each side of the freezer. Connect
water outlet to a drain using a ½ inch inside diameter
line. Automatic washer hoses work well for final
connections. All water connections must comply with
local codes.
CAUTION
FLUSH ALL WATER LINES BEFORE
INSTALLATION. IN NEW STORES WITH
SEDIMENT WATER, ADD SUITABLE FILTER
OR STRAINER TO WA TER INLET.
CAUTION
FAILURE TO PROVIDE ADEQUATE
VENTILATION WILL VOID W ARRANTY .
Figure 4. Space and Ventilation Requirements
B. The unit is shipped without casters installed. To install
the casters, lift and support the unit while screwing
the four casters into the bottom of the frame at each
corner.
4
Figure 5. Leveling Freezer
C. For location of proper electrical connections, refer
to Figure 7.
C. Accurate leveling is necessary for correct drainage
of freezer barrel to insure correct over-run and flow.
Place a spirit level on top of the freezer at each
corner to check for level condition (Fig. 5). If
adjustment is necessary , level the freezer by turning
the casters in or out (Fig. 6).
Figure 6. Caster Adjustment
2.4 ELECTRICAL CONNECTIONS
WARNING
BEFORE INSTALLATION OF ANY CABLE IN
THE FREEZER, DISCONNECT THE FREEZER
FROM ITS ELECTRICAL SUPPLY SOURCE.
CAUTION
ROUTE ELECTRICAL CABLE SO THAT IT
CANNOT BE ACCIDENTALLY DAMAGED BY
PINCHING, CRUSHING, ETC.
Figure 7. Connecting Permanent Wiring
NOTE
When supply voltage is less than 218V , reconnect
transformer. Switch orange and red wires from
transformer at the terminal strip and cap blue wire.
D. Please read decal located on lower electrical box
cover (Fig. 8)
Figure 8. Danger Decal
The model 4231 freezer is two individual freezers in a
common enclosure. EACH SIDE MUST BE
CONNECTED INDIVIDUALLY. EACH SIDE MUST
HAVE ITS OWN ELECTRICAL SUPPLY. When making
the electrical supply connections, YOU MUST
MAINTAIN STRAIGHT POLARITY FROM SIDE TO
SIDE.
A. Connect freezer to a properly grounded 208/230 volt
(AC), source of electricity .
B. To access the electrical boxes, remove the two
Phillips head screws on the left and right side panels.
Then pull the panel down and out.
E. 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
the main electrical power OFF . Then reverse L1 and
L3 electrical power lines to the junction box (three
phase only). Re-check auger shaft rotation.
5
6
SECTION 3
INITIAL SET-UP AND OPERATION
3.1 OPERATOR’S SAFETY
PRECAUTIONS
SAFE OPERATION IS NO ACCIDENT; Observe these
rules:
A. Know the freezer. Read and understand the
Operating Instructions.
B. Notice all warning labels on the freezer.
C. W ear proper clothing. A void loose fitting garments,
and remove watches, rings or jewelry, which
could cause a serious accident.
D. Maintain a clean work area. Avoid accidents by
cleaning up the area and keeping it clean.
E. Stay alert at all times. Know which switch, push
button or control you are about to use and what effect
it is going to have.
Spigot Switch (behind panel)
Activated by Spigot Handles
F. Disconnect electrical cord 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
conditions. Never operate the freezer if unusual or
excessive noise or vibration occurs.
3.2 OPERATING CONTROLS AND
INDICATORS
Before operating the freezer, it is requires the operator
know the function of each operating control. Refer to
Figure 9 for the location of the operating controls on the
freezer.
WARNING
THE OFF-SERVE SWITCH MUST BE PLACED
IN THE OFF POSITION WHEN
DISASSEMBLING FOR CLEANING OR
SERVICING. THE FREEZER MUST BE
DISCONNECTED FROM ELECTRICAL SUPPL Y
BEFORE REMOVING ANY ACCESS PANEL.
Clean-Off-Serve Rocker Switch
Red Light (Push to Freeze)
Green Light (Ready to Serve)
Low Mix Light
Front Door Interlock Switch
Actuator (located between barrels behind stainless steel
panel)
Ì
Æ
Ê
Ì
Figure 9. Controls
È
Ê
7
Ë
ËË
Dispense Rate Adjusters
Ë
Ë
Å
É
Clean-Off-Serve Rocker Switch
Red Light (Push to Freeze)
Green Light (Ready to Serve)
Low Mix Light
High Pressure Reset Button (under lower front panel)
Water Cooled Only
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