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Dialarc 250 AC/DC
Miller Dialarc 250 AC/DC User Manual
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Dialarc 250/250P AC/DC
Processes
Description
R
Stick
(SMAW)
W
elding
Arc Welding Power Source
OM-321
202730R
2016−09
File:
Stick (SMA
W)
For product information,
Owner’
s
Manual translations,
and more, visit
www.MillerWelds.com
2
Table of Contents
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
California Proposition 65 Warnings
8
Principal Safety Standards
8
EMF Information
8
Section 2 − Consignes de Sécurité − Lire Avant Utilisation
9
Symboles Utilisés
9
Dangers Relatifs au Soudage à L'arc
9
Dangers Supplémentaires en Relation Avec L'installation, le Fonctionnement et la Maintenance
11
Proposition Californienne 65 Avertissements
12
Principales Normes de Sécurité
12
Informations Relatives aux CEM
12
Section 3 − Definitions
13
Additional Safety Symbols and Definitions
13
Symbols and Definitions
13
Section 4 − Installation
14
Serial Number and Rating Label Location
14
Specifications
14
Environmental Specifications
15
Duty Cycle and Overheating
15
Volt-Ampere Curves
16
Dimensions and Weights
16
Selecting a Location
17
Selecting Cable Sizes
17
Connecting Weld Output Cables
18
Connecting to Weld Output Terminals
18
Electrical Service Guide
19
Placing Jumper Links
20
Connecting Input Power
22
Section 5 − Operation
24
Controls
24
Section 6 − Maintenance & Troubleshooting
25
Routine Maintenance
25
Troubleshooting
25
Section 7 − Electrical Diagrams
27
Section 8 − Parts List
28
Options and Accessories
36
4
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Miller Dialarc 250 AC/DC Specifications
General
Frequency
60 Hz
Open Circuit Voltage
80 V
Process
TIG, Stick
Duty Cycle (DC)
60% at 250 A
Phase
1/3
Welding Amperage Range
35-300 A
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