Processes
Miller LegendR302
OM-4430217 243R
Description
From Miller to You
SECTION 1 − SAFETY PRECAUTIONS − READ BEFORE USING
TABLE OF CONTENTS
SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION
OPTIONS AND ACCESSORIES
TABLE OF CONTENTS
SECTION 11 − GENERATOR POWER GUIDELINES
WARRANTY
SECTION 1 − SAFETY PRECAUTIONS − READ BEFORE USING
1-1. Symbol Usage
1-2. Arc Welding Hazards
NOTICE − Indicates statements not related to personal injury
ARC RAYS can burn eyes and skin
FUMES AND GASES can be hazardous
BUILDUP OF GAS can injure or kill
WELDING can cause fire or explosion
BATTERY ACID can BURN SKIN and EYES
1-3. Engine Hazards
1-4. Compressed Air Hazards
TRAPPED AIR PRESSURE AND WHIPPING HOSES can cause injury
1-5. Additional Symbols For Installation, Operation, And Maintenance
1-8. EMF Information
1-7. Principal Safety Standards
1-6. California Proposition 65 Warnings
For Gasoline Engines
2-2. Dangers relatifs au soudage à l’arc
2-1. Signification des symboles
SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION
Indique des instructions spécifiques
DES PIÈCES CHAUDES peuvent provoquer des brûlures graves
2-3. Dangers existant en relation avec le moteur
2-4. Dangers liés à l’air comprimé
D Affûter l’électrode au tungstène uniquement à la meuleuse dotée de protecteurs. Cette manœuv- re est à exécuter dans un endroit sûr lorsque l’on porte l’équipement homologué de protection du visage, des mains et du corps
2-8. Information EMF
2-6. Proposition californienne 65 Avertissements
2-7. Principales normes de sécurité
Pour les moteurs à essence
SECTION 3 − DEFINITIONS
3-1. Symbol Definitions
Work like a Pro
4-3. Dimensions, Weights, and Operating Angles
SECTION 4 − SPECIFICATIONS
4-2. Weld, Power, And Engine Specifications
4-1. Description
4-4. Dimensions For Units With Optional Running Gear
4-5. Fuel Consumption While Welding And Using Generator Power
HORIZONTAL
4-6. Generator Power Curve
WELD POSITION FLAT
VERTICAL
4-7. Duty Cycle
4-8. TIG Mode Volt-Ampere Curves
Continuous Welding
A. CC/DC Stick Mode
4-9. Stick And MIG Mode Volt-Ampere Curves
B. CV/DC MIG Mode
vehicle frame. Always connect a ground wire
SECTION 5 − INSTALLATION
5-1. Installing Welding Generator
Movement Do not lift unit from end
Keep battery in good condition
5-2. Engine Prestart Checks
Follow run-in procedure in engine
Store battery in warm area
Remove end panel to replace battery
5-3. Connecting Or Replacing The Battery
Replacing The Battery
Connect negative − cable last
Work like a Pro
5-4. Installing Exhaust Pipe
Stop engine and let cool
Failure to properly connect
5-5. Connecting To Weld Output Terminals
Stop engine
damage your machine
5-6. Selecting Weld Cable Sizes
5-7. Remote Receptacle Information
6-1. Front Panel Controls
SECTION 6 − OPERATING WELDING GENERATOR
For maximum weld output above
Engine Control Switch
6-2. Description Of Engine Controls See Section
6-3. Cold Weather Engine Operation
Generator power is available at recep
Engine Controls
6-4. Controlling Engine Speed And Weld/Generator Output
Generator Power Output
Either Run/Idle position
The unit will not return to idle speed
6-5. Process Switch
Wire Position
Stick Positions
Lift-Arc t TIG
6-6. Stick Start Procedure − Scratch Start Technique
6-7. TIG Lift-Arc Start Procedure
Application
6-8. Remote Voltage/Amperage Control
Max 160 A DC
Generator power is available at
7-1. 60 Hz Generator Power Receptacles And Supplementary Protectors
SECTION 7 − OPERATING AUXILIARY EQUIPMENT
weld load and generator power
rized Service Agent
7-2. Variable Frequency Hz Generator Power Receptacle RC3
Press button to reset. If supple
Work like a Pro
Current Available in Amperes
Each 120 V Duplex
Receptacle
Receptacle
for important start-up, service, and storage
SECTION 8 − MAINTENANCE & TROUBLESHOOTING
8-1. Routine Maintenance
information. Service engine more often if
8-2. Maintenance Label
OM-4430 Page
Stop engine and let cool
8-4. Servicing Air Cleaner
8-3. Servicing Optional Spark Arrestor
Stop engine
Stop engine and let cool
8-5. Changing Engine Oil, Oil Filter, And Fuel Filter
Stop engine, tighten connec- tions as necessary, and wipe up fuel
Stop engine
8-6. Overload Protection
803 773−A / Ref. 216 172-D
Trouble
8-7. Troubleshooting
A. Welding
Remedy
Trouble
Trouble
Remedy
Remedy
Trouble
D. Engine
Remedy
SECTION 9 − PARTS LIST
9-1. Recommended Spare Parts
SECTION 10 − ELECTRICAL DIAGRAMS
Figure 10-1. Circuit Diagram For Welding Generator Models
OM-4430 Page
232 961-A
11-2. Grounding Generator To Truck Or Trailer Frame
SECTION 11 − GENERATOR POWER GUIDELINES
11-1. Selecting Equipment
Be sure equipment has double insulated symbol and/or word- ing on it
Use ground device as stated in electrical codes
11-3. Grounding When Supplying Building Systems
11-4. How Much Power Does Equipment Require?
Amperes x Volts = Watts
Industrial Motors
11-5. Approximate Power Requirements For Industrial Motors
11-6. Approximate Power Requirements For Farm/Home Equipment
Rating
Rating
11-7. Approximate Power Requirements For Contractor Equipment
Contractor
Starting Watts
Single-Phase Induction Motor Starting Requirements
11-8. Power Required To Start Motor
11-9. How Much Power Can Generator Supply?
Motor Start
11-10. Typical Connections To Supply Standby Power
Customer-supplied equipment
Maximum Allowable Cord Length in ft m for Conductor Size AWG
11-11. Selecting Extension Cord Use Shortest Cord Possible
Cord Lengths for 120 Volt Loads
Current
U.S. STANDARD
SOCKET/WRENCH SELECTION TABLE
SOCKET/WRENCH SELECTION TABLE
METRIC
Welding Symbols
Ref. AWS/ANSI A2.4
Page
Page
Call 1-800-4-A-MILLER for your local Miller distributor
Warranty Questions?
Service
Support
Contact a DISTRIBUTOR or SERVICE AGENCY near you
For Service
Owner’s Record
Please complete and retain with your personal records