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Miller Electric
Welding System
280 NT
Miller Electric 280 NT User Manual
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Miller
Legend
302
Processes
Description
TIG (GT
A
W) W
elding
Stick (SMAW
)
W
elding
MIG (GMAW) W
elding &
Flux Cored (FCA
W
) W
elding
With V
oltage Sensing Feeder
Engine Driven Welding Generator
OM-4430
217 243R
2007
−
04
File:
Engine Drive
V
isit
our website at
www.MillerWelds.com
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
Engine Hazards
7
Compressed Air Hazards
7
Additional Symbols for Installation, Operation, and Maintenance
8
California Proposition 65 Warnings
9
Principal Safety Standards
9
EMF Information
9
Section 2 − Consignes de Sécurité − Lire Avant Utilisation
10
Signification des Symboles
10
Dangers Relatifs Au Soudage À L'arc
10
Dangers Existant en Relation Avec Le Moteur
12
Dangers Liés À L'air Comprimé
13
Dangers Supplémentaires en Relation Avec L'installation, Le Fonctionnement Et la Maintenance
13
Proposition Californienne 65 Avertissements
15
Principales Normes de Sécurité
15
Information EMF
15
Section 3 − Definitions
16
Symbol Definitions
16
Section 4 − Specifications
17
Description
17
Weld, Power, and Engine Specifications
17
Dimensions, Weights, and Operating Angles
17
Dimensions for Units with Optional Running Gear
18
Fuel Consumption While Welding and Using Generator Power
18
Generator Power Curve
19
Duty Cycle
20
TIG Mode Volt-Ampere Curves
20
Stick and MIG Mode Volt-Ampere Curves
21
Section 5 − Installation
22
Installing Welding Generator
22
Engine Prestart Checks
23
Connecting or Replacing the Battery
24
Installing Exhaust Pipe
25
Connecting to Weld Output Terminals
26
Selecting Weld Cable Sizes
27
Remote Receptacle Information
27
Section 6 − Operating Welding Generator
28
Front Panel Controls
28
Description of Engine Controls (See Section 6-1)
29
Cold Weather Engine Operation
29
Controlling Engine Speed and Weld/Generator Output
30
Process Switch
31
Stick Start Procedure − Scratch Start Technique
32
TIG Lift-Arct Start Procedure
32
Remote Voltage/Amperage Control
33
Section 7 − Operating Auxiliary Equipment
34
60 Hz Generator Power Receptacles and Supplementary Protectors
34
Variable Frequency (Hz) Generator Power Receptacle RC3
35
Wiring Instructions for Optional 240 Volt, Single-Phase Plug (NEMA 14-50P)
36
Section 8 − Maintenance & Troubleshooting
37
Routine Maintenance
37
Maintenance Label
38
Servicing Optional Spark Arrestor
39
Servicing Air Cleaner
39
Changing Engine Oil, Oil Filter, and Fuel Filter
40
Overload Protection
41
Troubleshooting
42
Section 9 − Parts List
45
Recommended Spare Parts
45
Section 10 − Electrical Diagrams
46
Section 11 − Generator Power Guidelines
48
Grounding When Supplying Building Systems
49
COMPLETE PARTS LIST - Www.millerwelds.com
60
Options and Accessories
60
4
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Miller Electric 280 NT Specifications
General
Input Voltage
230/460 V
Input Frequency
50 / 60 Hz
Duty Cycle
60%
Rated Output
280 A
Welding Processes
TIG, Stick
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