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