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PRECISION TIG 185 SVM169-A
Lincoln Electric PRECISION TIG 185 SVM169-A Manuals
Manuals and User Guides for Lincoln Electric PRECISION TIG 185 SVM169-A. We have
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Lincoln Electric PRECISION TIG 185 SVM169-A manual available for free PDF download: Service Manual
Lincoln Electric PRECISION TIG 185 SVM169-A Service Manual (104 pages)
Lincoln Electric Welder User Manual
Brand:
Lincoln Electric
| Category:
Welding System
| Size: 2 MB
Table of Contents
Master for All Sections
6
Service Manual
1
Safety
2
Electric and Magnetic Fields
2
Precision Tig
2
Electric Shock Can Kill
3
Fumes and Gases
3
Table of Contents
6
Installation Section
7
Installation
8
Output Range
8
Technical Specifications
8
Physical Dimensions
9
Machine Grounding and High Frequency Interference Protection
10
Safety Precautions
10
Select Suitable Location
10
Environmental Rating
10
Grinding
10
Lifting and Moving
10
Stacking
10
Tilting
10
Input Connections
11
Input Reconnect Procedure
12
Output Connections
12
Connections for TIG Welding
12
TIG Torch Connection
12
Remote Control Connection
13
Shielding Gas Connection
13
Work Cable Connection
13
Connections for Stick Welding
13
Stick Electrode Cable and Work Cable Connection
13
Table of Contents
15
Operation Section
15
Graphic Symbols
16
Input Power
16
Operation
17
Operation
16
Safety Precautions
16
Electric Shock
16
Product Description
17
Recommended Processes and Equipment
17
Welding Capability (Duty Cycle
17
Control Functionality
18
Controls and Settings
18
Operating Steps
19
Pulse TIG Control
19
Welding in TIG Mode
19
Benefits of the Precision TIG 185 Design
20
Remote Control Operation
20
Recommended Electrode Amperage Ranges
21
Accessories Section
23
Factory-Installed Options
24
Accessories
24
Welding in Stick Mode
21
Field Installed Options
25
Maintenance Section
27
Maintenance
28
Routine and Periodic Maintenance
28
D-4 D-4 Notes
31
Theory of Operation Section
31
Theory of Operation
32
General Description
32
Input Power Circuit
32
Output Rectification and Feedback Control
33
High Voltage/High Frequency Circuit
34
DC Welding Output
35
AC Welding Output
36
SCR Operation
37
Overload Protection
38
Protective Circuits
38
Thermal Protection
38
Table of Contents
39
Troubleshooting & Repair Section
39
Pc Board Troubleshooting Procedures
41
Troubleshooting Guide
42
High Frequency Circuit Disable Procedure
53
Materials Needed
53
Test Description
53
T1 Transformer Test
55
Static SCR Test
59
Test Procedure
60
Active SCR Test
63
Normal Open Circuit Voltage Waveform-AC TIG Mode
67
Scope Settings
67
Normal Open Circuit Voltage Waveform-DC TIG Mode
68
Normal Open Circuit Voltage Waveform-AC Stick Mode
69
Normal Open Circuit Voltage Waveform-DC Stick Mode
70
Typical Output Voltage Waveform-Machine Loaded AC TIG Mode
71
Typical Output Voltage Waveform-Machine Loaded DC TIG Mode
72
Typical Output Voltage Waveform-Machine Loaded AC Stick Mode
73
Typical Output Voltage Waveform-Machine Loaded DC Stick Mode
74
Abnormal Open Circuit Voltage - DC Tig Mode One Output Scr Not Functioning
75
Troubleshooting and Repair
77
Materials Needed
77
SCR Bridge Assembly Removal and Replacement
77
Test Description
77
Troubleshooting and Repair
78
Replacement Procedure
81
Polarity Switch Removal and Replacement
83
Polarity Switch
85
High Voltage Transformer Removal and Replacement
87
Retest after Repair
95
Electrical Diagrams Section
97
Electrical Diagrams
98
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