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11940
Lincoln Electric 11940 Manuals
Manuals and User Guides for Lincoln Electric 11940. We have
1
Lincoln Electric 11940 manual available for free PDF download: Service Manual
Lincoln Electric 11940 Service Manual (56 pages)
WIRE FEEDER WELDER (180 MODELS)
Brand:
Lincoln Electric
| Category:
Welding System
| Size: 9.19 MB
Table of Contents
-Theory of Operation Section
9
Table of Contents
9
Theory of Operation
11
Input Line Voltage, Fan Motor & Main Transformer
11
Output Control, Rectification & Voltage Feedback
12
Trigger, Gas Solenoid and Wire Drive
13
Protective Devices and Circuits
14
- Troubleshooting and Repair
15
How to Use Troubleshooting Guide
16
PC Board Troubleshooting Procedures
17
Case Cover Removal and Replacement Procedure
25
Gas Solenoid Test
27
Wire Drive Motor Test
29
Main Transformer Test
31
Fan Motor Test
33
Typical Output Voltage Waveform - Machine Loaded
35
Abnormal Open Circuit Voltage Waveform
36
Rectifier Removal and Replacement Procedure
39
Transformer & Choke Assembly Removal and Replacement Procedure
41
Wire Dive Motor Removal and Replacement Procedure
45
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