Vollrath Stoelting U431 Manuals

Manuals and User Guides for Vollrath Stoelting U431. We have 1 Vollrath Stoelting U431 manual available for free PDF download: Service Manual

Vollrath Stoelting U431 Service Manual (85 pages)

Pressure-Fed Twin Twist Soft Serve/Frozen Yogurt Machines

Brand: Vollrath | Category: Commercial Food Equipment | Size: 9 MB

Table of Contents
5
Section 1 Introduction
9
Description
9
Specifications
9
Figure 1 Model U431 Freezer
9
Figure 2 Specifications
9
Section 2 Installation Instructions
11
Safety Precautions
11
Figure 3 Decal Label Locations
11
Shipment & Transit
12
Freezer Installation
12
Installing Permanent Wiring
12
Figure 4 Water/Electrical Connections
12
Figure 5 Auger Rotation
12
MIX Pump (Serial #0 Thru 17977)
13
Figure 6 MIX Hose Installation
13
Figure 7 MIX Pump
14
Figure 8 4 Way Tee
15
Figure 9 MIX Inlet Tube & Probe Assy. Clip
15
Figure 10 Hose Holder
15
MIX Pump (Serial #17978 and Up)
16
Figure 11 MIX Hose Installation
16
Figure 12 MIX Pump
17
Figure 13 3 Way Tee
18
Figure 14 MIX Inlet Tube & Probe Assy. Clip
18
Figure 15 Hose Holder
18
Section 3 Initial Set-Up and Operation
19
Safety Precautions
19
Operating Controls and Indicators
19
Figure 16 Operating Controls
19
Important Information Regarding Cleaning and Sanitizing
21
Disassembly of Freezer Parts
22
Figure 17 Auger Flight Wear & Front Auger Support Bushing Wear
22
Cleaning Disassembled Parts
23
Sanitize Freezer Parts
23
Figure 18 Front Door Disassembly
23
Figure 19 Auger Flight Removal
23
Figure 20 Rear Seal Removal
23
Cleaning the Freezer
24
Assembling Freezer
24
Figure 31 Rear Seal Lubrication
24
Figure 22 Spring Installation
24
Figure 23 Front Door Assembly
25
Sanitizing
26
Initial Freeze down and Operation
26
Figure 24 Air Bleed Valves
26
Figure 25 Draining Sanitizer
26
MIX Information
27
Figure 26 Refrigerated Cabinet
27
Figure 27 Dispensing Product
27
Operation of MIX Pump
28
MIX Pump Cleaning
28
Disassembly and Inspection of Removable Parts
28
Figure 28 MIX Pumps
28
Figure 29 Removable Parts
29
Figure 30 Cleaning Air Tube
29
Figure 31 Cleaning Feed Tube
29
Figure 32 MIX Pump Tube Routing
29
Section 4 Maintenance Instructions
31
Freezer Adjustment
31
Product Temperature Adjustment
31
Overrun Adjustment
31
Figure 33 Potentiometer
31
Figure 34 Overrun Adjustment
31
MIX Pump Hose Reposition
32
MIX Pump Hose Replacement
32
Cab Temperature Adjustment
32
Figure 35 Pump Roller Assembly
32
Drive Belt Tension Adjustment
33
Condenser Cleaning (Air-Cooled Freezers)
33
Preventative Maintenance
33
Figure 36 Temperature Control Cab
33
Figure 37 Belt Adjustment
33
Extended Storage
34
Freezer Reference Photos
35
Left Side
35
Right Side
35
Overrun Adjustment
37
Sect. 5 REFRIGERATION SYSTEM
39
Refrigeration System
39
Compressor
39
Figure 38 Nameplate
39
Figure 39 Terminal Cover Removal
39
Figure 40 Compressor Connections
39
Condenser
40
Evaporator
40
Figure 41 Expansion Valve
40
Figure 42 Expansion Valve Removal
41
Figure 43 Drier
41
Cab Unit
42
Figure 44 Water Valves
42
Sect. 6 ELECTRICAL CONTROL SYSTEM
43
Control System
43
Figure 45 Front Electrical Box
43
Figure 46 Front Electrical Box up Close
43
Figure 47 Electrical Panel Screws
43
Current Sensor
44
Contactors
44
Drive Motor
44
Section 7 Major Component Removal and Installation
45
Preparation for Component Removal
45
Cooling Fan Motor Removal
45
Drive Motor Removal
45
Gear Box Removal
45
Figure 48 Block off Panel
45
Figure 49 Drive Motor & Belt Removal
45
Figure 50 Drive Motor Removal
45
Compressor Removal
46
Compressor Installation
46
Figure 51 Gear Box Removal
46
Figure 52 Compressor Connections
46
Figure 53 Compressor Connections
46
Gearbox Installation
47
Drive Motor Installation
47
Condenser Fan Motor Installation (Air-Cooled)
47
Figure 54 Drier
47
Figure 55 Gear Box Removal
47
Figure 56 Belt Tension
47
Figure 57 Motor Installation
47
Final Assembly of Freezer
48
Section 8 Troubleshooting
49
Troubleshooting - Freezer
49
Refrigeration Drawings
50
Troubleshooting - MIX Pump
52
Troubleshooting the Challenger Temperature Control and Sensor
54
Sect. 9 REPLACEMENT PARTS INFORMATION
61
Replacement Parts Information
61
Miscellaneous Parts
63
General Order Advice
83

Vollrath Categories

Commercial Food Equipment Kitchen Appliances Food Warmer Dispenser Ice Cream Maker

More Vollrath Manuals

Vollrath Stoelting U431 Manuals

Vollrath Stoelting U431 Service Manual (85 pages)

Table of Contents

Related Products

Vollrath Categories