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281 FABRICATOR
Thermal Arc 281 FABRICATOR User Manual
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208
V
230
V
Hz
60
F
ABRICA
TOR
®
MIG WELDING MACHINE
281
Service
Manual
Version No:
A
E
.01
Issue Date:
June 9, 2006
Manual No.:
0-4880B
Operating Features:
Art # A-07447
2
Table of Contents
Default Chapter
1
Service Manual
1
Table of Contents
4
Section 1
7
Safety Instructions and Warnings
7
Arc Welding Hazards
7
Principal Safety Standards
10
Precautions de Securite en Soudage a L'arc
11
Dangers Relatifs Au Soudage À L'arc
11
Principales Normes de Securite
14
Section 2
15
Introduction
15
How to Use this Manual
15
Equipment Identification
15
Symbol Chart
16
General Information
17
Safety
17
Protective Filter Lenses
17
User Responsibility
18
Specifications
18
Duty Cycle
18
Included Items
20
Optional Accessories
20
Section 3
21
Installation
21
Environment
21
Location
21
Ventilation
21
Primary Input Voltage Requirements
22
Alternative Primary Input Voltages
22
Quick Setup
24
Mount the A2281 Wire Feeder
25
Installation of Shielding Gas (GMAW) Process
26
Attaching the Gun and Cable Assembly to the Remote Feeder
28
Selection and Installation of Feedrolls
30
Input and Output Wire Guide Installation
30
Installing Wire Spool on the Remote
31
Inserting Wire into the Feedhead
32
Wirefeeder Feedroll Pressure Adjustment
33
Wire Spool Hub Brake
33
Spool Gun Attachment
34
Polarity Changeover
35
Operation
37
Power Supply Controls, Indicators and Features
37
Internal Controls of A2281 Remote
43
TWECO Weldskill 300 AMP Weld Gun
45
Installing a New Wire Conduit
46
MIG Gun Maintenance
47
Basic Welding Technique
47
Stitch Welding Operation
50
Spot Welding Operation
50
Gas Selection for Gas Metal Arc Welding
51
Welding Setting Selection Guide
52
Section 5
55
Section
55
Routine Maintenance & Inspection
55
Maintenance
55
Section 6
57
Troubleshooting
57
Basic Troubleshooting
57
Solving Problems Beyond the Welding Terminals
57
Welding Problems
59
Power Supply Problems
61
Wire Feeder Problems
62
Section 7
63
Advanced Troubleshooting
63
Preliminary Checks
63
Initial Setup Conditions
64
Primary Power Test
64
Logic and Control Tests
65
Spool Gun Control (J1) Test
66
Output Voltage Test
67
Wire Feed & Weld Test
68
Primary Power Problems
68
Logic and Control Problems
69
Spool Gun Control (J1) Problem
70
Output Voltage Problem
70
Wire Feed and Weld Problems
71
Terminal Block Voltage Test
71
SW3 Coarse and SW4 Fine Rotary Switch Test
72
MIG Timer PCB (PCB2) Test
74
Rectifier Assembly Test
75
Main Transformer Test
76
Section 8
77
Circuit Operation
77
Circuit Operation of the Control PCB 7977964
77
Circuit Operation of the Digital Volt/Amp PCB 704883
78
Circuit Operation of the Spool Gun PCB 7978034
79
Section 9
81
Parts List
81
Equipment Identification
81
How to Use this Parts List
81
Power Supply External Replacement Parts (1)
82
Power Supply External Replacement Parts (2)
84
Power Supply Electrical Replacement Parts
85
Remote Parts (1)
86
Remote Parts (2)
87
Remote Parts (3)
88
Remote Electrical Components (1)
89
Remote Wire Feeder Parts
90
MIG Torch
92
Appendix 1: Optional Accessories and Consumables
93
Appendix 2: Power Supply Circuit Diagram
94
Appendix 3: Main Pcb Circuit Diagram
96
Appendix 4: Spot Timer Circuit Diagram
98
Appendix 5: Spool Gun Pcb
101
Appendix 6: Feedroll Kits
102
Appendix 7: Wire Feeder Terminal Block Diagram
103
Limited Warranty
104
Warranty Schedule
105
Global Customer Service Contact Information
107
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Thermal Arc 281 FABRICATOR Specifications
General
Brand
Thermal Arc
Model
281 FABRICATOR
Category
Welding System
Language
English
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