Stoelting Endura 131 User manual

Model E131G & F131G
SERVICE MANUAL
Manual No. 513537-3 Mar. 2004

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 pro-
vide new parts for machines built prior to date of change.
DO NOTATTEMPT 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.
Stoelting Foodservice Equipment
502 Highway 67
Kiel, WI 53042-1600
U.S.A.
Main Tel: [phone]
Fax: [phone]
Customer Service: 888.429.5920
Fax: [phone]
Email: [email protected]
© 2014 PW Stoelting, LLC
stoeltingfoodservice.com

Safety Alert Symbol:
This symbol Indicates danger, warning or caution.
Attention is required in order to avoid serious per-
sonal 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.
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.
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
specific safety information, the following safety defini-
tions are provided to assist the reader.
The purpose of safety symbols is to attract your at-
tention 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.
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” not preceded by the
safety alert symbol indicates a potentially hazardous
situation, which, if not avoided, may result in equip-
ment/property damage.
NOTE (or NOTICE)
The signal word “NOTICE” indicates information or
procedures that relate directly or indirectly to the
safety of personnel or equipment/property.

TABLE OF CONTENTS
SECTION DESCRIPTION PAGE
SECTION 1 INTRODUCTION
1.1 Description .....................................................................................1
1.2 Specifications .................................................................................1
SECTION 2 INSTALLATION INSTRUCTIONS
2.1 SafetyPrecautions .........................................................................3
2.2 Shipment and Transit .....................................................................4
2.3 FreezerInstallation .........................................................................4
2.4 Floor Stand Installation ...................................................................5
2.5 Installing Permanent Wiring............................................................5
SECTION 3 INITIAL SET-UP AND OPERATION
3.1 Operator’s Safety Precautions ........................................................7
3.2 Operating Controls and Indicators ..................................................7
3.3 Sanitizing ........................................................................................8
3.4 Freeze Down and Operation...........................................................9
3.5 Mix Information...............................................................................10
3.6 Removing Mix Inlet Regulator.........................................................11
3.7 Cleaning the Freezer ......................................................................11
3.8 Disassembly of Freezer Parts.........................................................11
3.9 Cleaning the Freezer Parts .............................................................13
3.10 Sanitize Freezer & Freezer Parts....................................................13
3.11 Assembly of Freezer.......................................................................13
3.12 RoutineCleaning ............................................................................14
3.13 PreventiveMaintenance .................................................................14
3.14 Extended Storage...........................................................................16
SECTION 4 REFRIGERATION SYSTEM
4.1 Refrigeration System ......................................................................17
4.2 Evaporators ....................................................................................18
4.3 Compressor Winding Test..............................................................18
4.4 Condensers ....................................................................................19
4.5 T.X.V. .............................................................................................20
4.6 T.X.V. Adjustment ..........................................................................20
4.7 T.X.V. Removal ..............................................................................20
4.8 T.X.V. Installation ...........................................................................21
4.9 Hopper............................................................................................22
4.10 E.P.R. Valve Adjustment ................................................................22
4.11 E.P.R. Removal ..............................................................................23
4.12 E.P.R. Valve Installation .................................................................23
4.13 Capillary Tubes...............................................................................24
4.14 Capillary Tube Removal .................................................................24
4.15 Capillary Tube Installation...............................................................24
4.16 SolenoidValve................................................................................25
4.17 Solenoid Magnetic Coil Removal ....................................................26
4.18 Solenoid Magnetic Coil Installation .................................................26

4.19 Liquid and Suction Line Solenoid Valve Removal ...........................26
4.20 Liquid and Suction Line Solenoid Valve Installation ........................27
4.21 Water Valve....................................................................................27
4.22 Water Valve Adjustment .................................................................27
4.23 Water Valve Removal.....................................................................27
4.24 Water Valve Installation..................................................................28
4.25 Refrigerant Charge (All Models) .....................................................28
SECTION 5 CONTROLS
5.1 Control System ...............................................................................29
5.2 Power Board...................................................................................29
5.3 Program Module .............................................................................29
5.4 Plug-inRelays ................................................................................36
5.5 Contactors ......................................................................................36
5.6 Spigot Switches ..............................................................................37
5.7 Spigot Switch Removal...................................................................37
5.8 Spigot Switch Installation ................................................................37
5.9 Front Door Interlock Switch ............................................................37
5.10 Front Door Interlock Removal.........................................................37
5.11 Front Door Interlock Switch Assembly ............................................38
5.12 Touch Pad Switch Module ..............................................................38
5.13 Touch Pad Switch Module Removal ...............................................38
5.14 Touch Pad Switch Module Assembly..............................................39
5.15 Sensor ............................................................................................39
5.16 Sensor Removal .............................................................................39
5.17 SensorInstallation ..........................................................................40
5.18 Preparation for Major Component Removal ...................................40
5.19 Condenser Fan Motor and Lubrication ...........................................40
5.20 Condenser Fan Motor Removal......................................................40
5.21 Condenser Fan Motor Installation...................................................41
5.22 Drive Motor.....................................................................................41
5.23 Drive Motor Removal......................................................................41
5.24 Drive Motor Installation ...................................................................42
5.25 Speed Reducer...............................................................................43
5.26 Speed Reducer Removal................................................................43
5.27 Speed Reducer Installation.............................................................43
5.28 Compressor....................................................................................44
5.29 Compressor Removal.....................................................................44
5.30 Compressor Installation..................................................................44
5.31 Final Assembly of Freezer ..............................................................45
SECTION 6 TROUBLESHOOTING
6.1 Dispensing, Servability, and Overrun..............................................48
6.2 Barrel and Hopper Mix Temperature Maintenance .........................49
6.3 Electro-Mechanical .........................................................................50
6.4 Control Displayed Error Conditions.................................................56
SECTION 7 REPLACEMENT PARTS
7.1 How To Order Parts........................................................................59

LIST OF ILLUSTRATIONS
FIGURE TITLE PAGE
1 Model Endura/Futura 131Freezer ...........................................................1
2 Specifications .........................................................................................1
3 Warning Label Locations ........................................................................3
4 Space and Ventilation Requirements......................................................4
5 Installing Tray and Cover ........................................................................4
6 Power Cord ............................................................................................4
7 Floor Stand .............................................................................................5
8 Power Cord Connection..........................................................................5
9 Controls ..................................................................................................7
10 Mix Inlet Regulator..................................................................................9
11 SanitizingProcedure...............................................................................9
12 Clean Control..........................................................................................9
13 SanitizingHopper ...................................................................................9
14 Spigot Opened and Solution Draining .....................................................9
15 Dispensing Product ................................................................................10
16 Removing Mix Inlet Regulator.................................................................11
17 Draining Mix ...........................................................................................11
18 Auger Flight Wear and Front Auger Support Bushing Wear ...................11
19 Removing Front Door .............................................................................12
20 Front Door Disassembly .........................................................................12
21 Removing Auger Support .......................................................................12
22 Auger Shafts...........................................................................................12
23 Removing “O” Ring.................................................................................13
24 Exploded View of Auger .........................................................................13
25 Exploded View of Front Door ..................................................................14
26 Mix Inlet Regulator Installation ................................................................14
27 Refrigeration System ..............................................................................17
28 Compressor Terminal Cover ..................................................................18
29 Compressor Connections .......................................................................18
30 Ohmmeter and Connections...................................................................18
31 Electrical Box Cover Removal ................................................................19
32 Condenser and Filter ..............................................................................19
33 Condenser Inspection.............................................................................20
34 T.X.V. (Thermostatic Expansion Valve) ..................................................20
35 Bulb Removal .........................................................................................21

36 T.X.V. Removal ......................................................................................21
37 BulbInstallation ......................................................................................22
38 Filter Drier...............................................................................................22
39 E.P.R. Schrader Access Fitting ..............................................................22
40 E.P.R. Valve Adjustment ........................................................................23
41 E.P.R. Valve and Lines...........................................................................24
42 Filter Drier...............................................................................................24
43 Capillary Tube and Drive Assembly ........................................................25
44 Filter Drier...............................................................................................25
45 Power Cord ............................................................................................25
46 Pressure Gauges ...................................................................................26
47 Solenoid Replacement............................................................................26
48 Solenoid Coil Removal ...........................................................................26
49 Gauge Connection..................................................................................27
50 Water Valve Adjustment .........................................................................27
51 Power Board...........................................................................................30
52 Program Module .....................................................................................31
53 Membrane Switch Panel Display Board..................................................32
54 Plug-inRelays ........................................................................................36
55 Spigot Switch Replacement ....................................................................37
56 Interlock Switch Removal .......................................................................38
57 Interlock Switch Assembly ......................................................................38
58 Switch Module Removal .........................................................................38
59 Electrical Box Removal...........................................................................39
60 Cover Plate Removal..............................................................................39
61 Foam Insulation Removal .......................................................................39
62 Ty-raps Removal ....................................................................................40
63 Fan Motor Connections ..........................................................................41
64 Fan Bracket Removal .............................................................................41
65 Drive Belt Removal.................................................................................42
66 Drive Motor Wire Removal .....................................................................42
67 Motor Pulley Adjustment.........................................................................42
68 Belt Tension Adjustment.........................................................................42
69 Speed Reducer Removal........................................................................43
70 Speed Reducer Adjustment....................................................................43
71 Belt Tension Adjustment.........................................................................43
72 Compressor Cover Removal ..................................................................44
73 Compressor Connections .......................................................................44
74 Compressor Oil Test Kit .........................................................................44
75 Filter Drier...............................................................................................45
76 O-Ring Identification Sheet.....................................................................59

1
SECTION 1
INTRODUCTION
1.1 DESCRIPTION
The Stoelting Endura/Futura 131 counter freezer is
gravityfed.The freezerisequippedwithfullyautomatic
controls to provide a uniform product. The freezer is
designedtooperatewithalmostanytypeofcommercial
soft serve or non-dairy mixes available, including ice
milk, ice cream, yogurt, and frozen dietary desserts.
The freezer is designed to be used with both barrels in
operation. If you desire to use one barrel only, the
freezer must be cleaned, sanitized and filled with fresh
mix daily. For more information call your authorized
StoeltingServiceperson.
This manual is designed to assist qualified service
personnel and operators in the installation, operation
andmaintenanceoftheStoeltingModelEndura/Futura
131 gravity freezer.
Information Packet Location
Model Endura/Futura 131 - behind
Left Side Panel or behind the Front
Decorative Panel.
1.2 SPECIFICATIONS
Figure 1. Model Endura/Futura 131 Freezer
(This freezer is mounted on the
optional Floor Stand.)

2
MODELENDURA/FUTURA131
COUNTER MODEL
GRAVITY FREEZER
Dimensions:
Freezer: 22" (56 cm) wide x 28" (72 cm) deep x 34.75" (88 cm) high
Crated: 28" (71 cm) wide x 35" (89 cm) deep x 38" (96 cm) high
Weight:
Freezer: 370 lbs. (168 kg) Crated: 450 lbs. (204 kg)
Electrical:
Use20 ampHACRcircuit breaker.
Automaticsafeguardcircuitbuiltintoelectroniccontrol-protectsmajorfreezercomponentsundernormaloperating
conditions.
Cooling
Air cooled requires minimum 3" air clearance on right and left hand side. No clearance needed in the rear.
Water cooled required 3/8" I.D. water supply line and 3/8" I.D. drain line minimum.
Hopper
3Gallons(11.35liters)eachrefrigeratedandinsulated.
Refrigeration
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