Lincoln Electric NA-5SF Manuals

Manuals and User Guides for Lincoln Electric NA-5SF. We have 1 Lincoln Electric NA-5SF manual available for free PDF download: Service Manual

Lincoln Electric NA-5SF Service Manual

Lincoln Electric NA-5SF Service Manual (152 pages)

AUTOMATIC WELDING SYSTEMS

Brand: Lincoln Electric | Category: Welding System | Size: 2.39 MB

Table of Contents

Safety

3
Installation

9
Operating Instructions

25
- Safety Precautions
  25
- Operator'sinstructions
  25
- Controls and Their Functions
  26
  - Exposed Controls (with Lockable Cover Down)
    26
  - Controls under the Lockable Security Cover
    26
- Setup Instructions
  27
- Starting and Stopping Sequences
  28
- Setting Travel Starting and Stopping
  29
  - Stopping Sequences
    29
  - Starting Sequences
    29
  - Reconfiguring the Travel Sequences
    29
- Voltage Control Response
  32
- Automatic Shutdown
  33
- Cold Start Circuitry
  34
- Security of Weld Procedure Settings
  35
- Listing of Accessories
  36
Accessories

37
- General
  37
- Listing of Accessories
  38
  - K29 Vertical Lift Adjuster
    38
  - K58 Magnetic Separator
    38
  - K218 Horizontal Fillet/Lap Attachment
    38
  - K96 Horizontal Adjuster
    38
  - K219 Flux Hopper Kit
    38
  - K129 Submerged Arc Small Wire Twinarc
    38
  - K223 Solenoid Kit
    38
  - K225 Submerged Arc Twinarc Kit
    39
  - K238 High Frequency Unit
    39
  - K285 Concentric Flux Cone
    39
  - K310 Flux Screen
    39
  - K325 Tc-3 Travel Carriage
    39
  - K334 Start and Crater Controls
    40
  - K336 Remote Interface Module
    40
  - Speed-Feed Drum
    40
  - K337 Weld Timer Module
    40
  - Speed-Feed Reel
    40
  - K349 Multi-Procedure Kit
    40
  - Optional Features
    42
Maintenance

43
- Control Box
  43
- Circuit Protection
  43
- Welding Head
  44
  - Wire Drive Gear Box
    44
  - Ground Fault Fuse Protection
    44
  - Wire Drive Motor
    45
  - Changing Wire Feed Gear Ratios
    45
  - Wire Straighteners
    46
  - Wire Drive Mechanism
    46
- Optional Features
  47
  - Contact Assemblies
    47
  - Vertical Lift Adjuster
    47
  - Travel Carriage
    47
  - Horizontal Adjuster
    47
  - High Frequency Generator
    47
  - Input Power Circuits
    48
  - Power and Voltage Boards
    48
  - SCR Operation
    48
Theory of Operation

49
- General Description
  49
- Input Power Circuits
  49
- Power and Voltage Boards
  50
- Control, Logic and Procedure Boards
  51
- Optional Start, Crater Fill and Weld Timer Boards
  52
- SCR Operation
  53
- Troubleshooting and Repair
  55
- How to Use Troubleshooting Guide
  55
- PC Board Troubleshooting Procedures
  56
- PC Board LED Definitions
  89
- Test Procedures
  92
- DC Power Supply Test
  92
- T1 and T2 Transformer Test
  95
- Voltage Board Transformer Test
  98
- Wire Feed Drive Motor Test
  101
- External Resistance Test (Leads #21 and #67
  103
- Out of Voltage Range Shut Sown Test
  105
- Tach Board Feedback Test
  108
- Voltmeteraccuracy Test
  110
- Wire Speed Accuracy Test
  113
- Meter Circuit Accuracy Test
  117
- PC Board(S) Removal and Replacement
  124
- Digital Meter and Meter PC Board Removal and Replacement
  126
- Digital Meter
  128
- Tach PC Board Removal and Replacement
  130
- Wire Drive Motor Removal and Replacement
  134
- Motor Drive
  135
- Retest after Repair
  138
- Electrical Diagrams
  142
- Wiring Diagram
  142
- Logic PC Board (L6242-1) Schematic
  143
- Logic PC Board (L6242-2 & Above) Schematic
  144
- Power PC Board (L6252-1) Schematic
  145
- Power PC Board (L6252-2 & Above) Schematic
  146
- Voltage PC Board Schematic
  147
- Control Circuit Schematic
  148
- Procedure Board Schematic
  149
- Meter PC Board Schematic & Layout
  151

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