Lincoln Electric 76074 Manuals

Manuals and User Guides for Lincoln Electric 76074. We have 1 Lincoln Electric 76074 manual available for free PDF download: Service Manual

Lincoln Electric 76074 Service Manual

Lincoln Electric 76074 Service Manual (84 pages)

Brand: Lincoln Electric | Category: Welding System | Size: 2 MB

Table of Contents

Installation

6
Operation

11
- Operation
  12
- Operational Features and Controls
  12
- Safety Precautions
  12
- Advanced Features
  14
  - Optional Accessories
    17
  - Thermal Protection
    19
  - Routine and Periodic Maintenance
    19
  - Major Component Locations
    20
Theory of Operation

21
Table of Contents

26
- How to Use Troubleshooting Guide
  27
- Control PC Board Troubleshooting Procedures
  28
  - Troubleshooting Guide
    29
  - Troubleshooting and Repair
    30
  - Test Description
    33
  - Materials Needed
    33
- Case Cover Removal Procedure
  34
- Control PC Board Removal Procedure
  37
- SCR Module Removal Procedure
  40
- Contactor Removal Procedure
  43
  - Rear Panel View
    43
- Fan Motor Removal Procedure
  46
- Control PC Board Test
  49
- SCR Module Test
  52
- Fan Motor Test
  55
- Auxiliary Transformer Test
  57
- Contactor Test
  61
- Resistance of Output Terminal Test
  63
- Function Test and Error Code Shown
  65
  - Dip Switch
    65
  - Control Pc Board
    65
- The Calibration Procedure of WFS
  69
- Voltage and Current Calibration Procedure
  71
- Retest after Repair
  73
  - Electrical Diagram
    74
  - Main Parts List
    77

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