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Maxstar 140
Miller Maxstar 140 User Manual
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Maxstar
140
With Auto-Link
Pr
ocesses
Description
R
TIG (GT
A
W) W
elding
Stick (SMAW
)
W
elding
Arc Welding Power Source
OM-2224
191 802
February 1999
V
isit our website at
www.M
iller
-
Weld
s.
com
R
2
Table of Contents
Default Chapter
3
Table of Contents
3
Section 1 - Safety Precautions - Read before Using
5
Symbol Usage
5
Arc Welding Hazards
5
Additional Symbols for Installation, Operation, and Maintenance
7
Principal Safety Standards
7
EMF Information
8
Section 1 - Consignes de Securite - Lire Avant Utilisation
9
Signification des Symboles
9
Dangers Relatifs Au Soudage À L'arc
9
Dangers Supplémentaires en Relation Avec L'installation, Le Fonctionnement Et la Maintenance
11
Principales Normes de Sécurité
12
Information Sur Les Champs Électromagnétiques
12
Section 2 - Specifications and Installation
13
Specifications
13
Description
13
Included with Your Unit (Stick Only)
14
Included with Your Unit (TIG / Stick)
14
Duty Cycle and Overheating
15
Volt-Ampere Curves
16
Selecting a Location
17
Typical Connection Methods
17
Connecting to Weld Output Receptacles
18
Rear Panel and Power Switch
18
Connecting Input Power
19
Installing 230 Volts AC Input Power Cord
20
Section 3 - Operation
21
Front Panel Controls
21
Lift-Arct TIG Procedure
22
Section 4 - Maintenance and Troubleshooting
22
Routine Maintenance
22
Blowing out Inside of Unit
23
Troubleshooting
24
Section 5 - Electrical Diagram
25
Section 6 - Stick Welding (Smaw) Guidelines
26
Electrode and Amperage Selection Chart
27
Positioning Electrode Holder
28
Poor Weld Bead Characteristics
28
Good Weld Bead Characteristics
28
Conditions that Affect Weld Bead Shape
29
Electrode Movement During Welding
29
Butt Joints
30
Lap Joint
30
Tee Joint
30
Weld Test
31
Section 7 -Selecting and Preparing Tungsten Electrode
34
Safety Information about Tungsten
34
Section 8 - Guidelines for Tig Welding (Gtaw)
36
Torch Movement During Welding
37
Positioning Torch Tungsten for Various Weld Joints
38
Section 9 - Parts List
40
4
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Miller Maxstar 140 Specifications
General
TIG Lift Arc
Yes
Input Voltage
120/240 V
Output Current Range
5-140 A
Welding Process
TIG (Lift Arc), Stick
Input Phase
Single-Phase
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