Lincoln Electric LF-72 Manuals

Manuals and User Guides for Lincoln Electric LF-72. We have 5 Lincoln Electric LF-72 manuals available for free PDF download: Service Manual, Operator's Manual, Technical Specifications

Lincoln Electric LF-72 Service Manual (119 pages)

Lincoln Electric Welder User Manual

Brand: Lincoln Electric | Category: Welding System | Size: 6.38 MB

Table of Contents

7
- Service Manual
  1
- California Proposition 65 Warnings
  2
- Electric Shock Can Kill
  3
- Installation
  8
  - Technical Specifications
    8
  - Safety Precautions
    9
    
    Location
    9
    
    Mounting
    9
    
    Bench Mount
    10
    
    Swivel Mount
    10
    
    Boom Mount
    10
    
    Suspended
    10
    
    Weld Cable Sizes
    11
    
    Coaxial Weld Cables
    12
    
    Weld Cable Connections
    12
  - Analog Control Cable Connections
    13
    
    Welding Gun/Wire Feeder Trigger Connector
    15
    
    High Frequency Protection
    15
    
    Remote Sense Lead Specifications
    15
  - Wire Drive Systems
    15
  - Welding Guns, Torches and Accesories
    16
  - Procedure for Changing Drive and Idle Roll Sets
    17
    
    Wire Drive Configuration
    17
    
    Pressure Arm Adjustment
    18
    
    Wire Reel Loading
    19
    
    Weld Wire Routing
    20
  - Installing Electrode Conduit Kits
    22
  - Aluminum Wire Preperations
    23
  - Typical System Configurations
    25
Operation Section

27
- Operation
  28
  - Safety Precautions
    28
  - Graphic Symbols
    28
  - Common Welding Abbreviations
    29
  - Product Description
    29
  - Front Panel Controls and Connections
    30
    
    Remote Voltage Control Kit (Optional
    31
    
    Burnback and Postflow Timer Kit (Optional
    31
    
    Thermal LED, Motor Overload
    31
    
    Cold Feed/Gas Purge Switch
    31
    
    5. 2 Step - Trigger Interlock Switch
    31
    
    Wire Feed Speed Knob
    32
    
    Gun Receiver Bushing
    32
    
    Trigger Connector 5-Pin Amphenol
    32
Maintenance

43
- Installation
  44
- Safety Precautions
  45
  - Location
    45
  - Mounting
    45
  - Bench Mount
    46
  - Swivel Mount
    46
  - Boom Mount
    46
  - Suspended
    46
  - Weld Cable Sizes
    47
  - Coaxial Weld Cables
    48
  - Weld Cable Connections
    48
  - Welding Gun/Wire Feeder Trigger Connector
    51
  - High Frequency Protection
    51
  - Remote Sense Lead Specifications
    51
- Wire Drive Systems
  51
- Welding Guns, Torches and Accessories
  52
- Wire Drive Configuration
  53
- Assembly of Drive Rolls and Wire Guides
  54
- Pressure Arm Adjustment
  55
- Shielding Gas Connection
  56
  - Wire Reel Loading
    57
  - Weld Wire Routing
    58
- Installing Electrode Conduit Kits
  59
- Aluminum Wire Preparations
  60
- Common Equipment Set-Ups
  62
Table of Contents

65
- Common Welding Abbreviations
  66
- Operation
  66
- Safety Precautions
  66
- Product Description
  67
- Front Panel Controls and Connections
  68
  - Wire Feed Speed Knob
    69
  - Remote Voltage Control Kit (Optional
    69
  - Burnback and Postflow Timer Kit (Optional
    69
  - Thermal LED, Motor Overload
    69
  - Cold Feed/Gas Purge Switch
    69
  - Step - Trigger Interlock Switch
    70
  - Gun Receiver Bushing
    70
  - Trigger Connector 5-Pin Amphenol
    70
    
    Theory of Operation
    82
    
    General Description
    82
    
    Control Board
    83
Table of Contents

85
- How to Use Troubleshooting Guide
  86
- Troubleshooting Guide
  86
  - Pc Board Troubleshooting Procedures
    87
  - Drive Motor and Tach Feedback Test
    91
  - Gas Solenoid Test
    93
  - Diode Bridge Test
    95
  - Wire Speed Potentiometer Test
    97
  - PC Board Removal and Replacement
    99
    
    Wire Drive Motor and Gear Box
    101
    
    Troubleshooting and Repair
    102
  - Wire Drive Motor and Gear Box Removal and Replacement
    102
  - Retest after Repair
    105
Table of Contents

107

Lincoln Electric LF-72 Operator's Manual (51 pages)

Brand: Lincoln Electric | Category: Wire Feeders | Size: 2.16 MB

Table of Contents
7
Table of Contents
8
Glossary of Terms
9
Definitions of Welding Modes
9
Common Welding Abbreviations
9
Product Description
10
Recommended Processes and Required Equipment
10
Base Model, Bench Model Standard Duty and Bench Model Heavy Duty
11
Base Model and Standard Wire Drive Features
12
Technical Specifications
13
Typical System Configurations
14
Installation
15
Safety Precautions
15
Location
15
Mounting
15
Bench Mount
16
Swivel Mount
16
Boom Mount
16
Suspended
16
Safety Precautions
17
Weld Cable Sizes
17
Coaxial Weld Cables
18
Weld Cable Connections
18
Analog Control Cable Connection
19
Analog Miller Control Cable Adapter
20
High Frequency
21
Welding Gun/Wire Feeder Trigger Connector
21
Remote Sense Lead Specifications
21
Wire Drive Systems
21
Welding Guns, Torches and Accessories
22
Wire Drive Configuration
23
Pressure Arm Adjustment
24
Wire Reel Loading
25
Weld Wire Routing
26
Shielding Gas Connection
27
Installing Electrode Conduit Kits
28
Aluminum Wire Preparations
29
Operation
30
Safety Precautions
30
Graphic Symbols
30
Front Panel Controls and Connections
31
Remote Voltage Control Kit (Optional
32
Burnback and Postflow Timer Kit (Optional
32
Thermal LED, Motor Overload
32
4. Cold Feed/Gas Purge Switch
32
5. 2 Step - Trigger Interlock Switch
32
Wire Feed Speed Knob
33
Gun Receiver Bushing
33
Trigger Connector 5-Pin Amphenol
33
Accessories
34

Lincoln Electric LF-72 Operator's Manual (43 pages)

For use with machines having Code Numbers: 12454

Brand: Lincoln Electric | Category: Wire Feeders | Size: 6.83 MB

Table of Contents
6
Table of Contents

7
Installation

8
- Technical Specifications
  8
  - Location
    9
  - Mounting
    9
  - Bench Mount
    10
  - Swivel Mount
    10
  - Boom Mount
    10
  - Suspended
    10
  - Weld Cable Sizes
    11
  - Coaxial Weld Cables
    12
  - Weld Cable Connections
    12
- Analog Miller Control Cable Adapter
  14
- Wire Drive Systems
  15
- Welding Guns, Torches and Accessories
  16
- Procedure for Changing Drive and Idle Roll Sets
  17
  - Wire Drive Configuration
    17
  - Pressure Arm Adjustment
    18
  - Wire Reel Loading
    19
  - Weld Wire Routing
    20
- Shielding Gas Connections
  21
- Installing Electrode Conduit Kits
  22
- Aluminum Wire Preparations
  23
- Typical System Configurations
  24
Operation

25
- Safety Precautions
  25
- Graphic Symbols
  25
- Common Welding Abbreviations
  26
- Product Description
  26
- Front Panel Controls and Connections
  27
Accessories

30
- Periodic Maintenance
  34
- How to Use Troubleshooting Guide
  36

Lincoln Electric LF-72 Operator's Manual (49 pages)

WIRE FEEDER

Brand: Lincoln Electric | Category: Welding System | Size: 5.59 MB

Lincoln Electric LF-72 Technical Specifications (8 pages)

2-Roll or 4-Roll Heavy Duty Industrial Wire Feeders

Brand: Lincoln Electric | Category: Welding Accessories | Size: 0.61 MB

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