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NA-5NF
Lincoln Electric NA-5NF Manuals
Manuals and User Guides for Lincoln Electric NA-5NF. We have
1
Lincoln Electric NA-5NF manual available for free PDF download: Service Manual
Lincoln Electric NA-5NF Service Manual (152 pages)
AUTOMATIC WELDING SYSTEMS
Brand:
Lincoln Electric
| Category:
Welding System
| Size: 2.39 MB
Table of Contents
Safety
3
Electric Shock Can Kill
3
Table of Contents
6
Electrode Polarity
8
Power Source Connection Diagrams
8
Installation
9
Technical Specifications
9
Mechanical Installation
11
Electrical Installation
13
Electrode Polarity
15
Power Source Connection Diagrams
15
Setting Travel Starting and Stopping
24
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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