Miller Electric 302 User Manual

Miller Legend® 302

	Industrial Applications	Processes (X-Ray Quality)
	Fabrication	Stick (SMAW)
Quick	Structural Steel Work	MIG (GMAW)
	Process Plant Piping	with voltage-sensing feeder
Specs	Maintenance	Flux Cored (FCAW)
		with voltage-sensing feeder
		DC TIG (GTAW)
		Air Carbon Arc (CAC-A) Cutting
		and Gouging (3/16 in carbons)

Issued January 2008 • Index No. ED/4.2

Gas/LP Engine-Driven

Welder/AC Generator

Output Range

DC Stick	25	– 300 A
DC TIG	10	– 300 A
MIG/FCAW	13	– 35 V

Generator Power Output Rated at 104˚ F (40˚ C)

5500 Watts Peak — 5000 Watts Continuous

Accu-Rated™– Not Inflated

Generator Power

The Power of Blue®.

Exclusive! Low-speed generator produces 5500 watts peak, 5000 watts continuous at 1800 RPMs, 2400 watts (60 –120 Hz) at all speeds.

Exclusive! Multi-speed welding to reduce noise. Up to 240 amps at a quiet 3000 RPMs and powerful 300 amps at 3600 RPMs.

Increased fuel capacity to

12 gallons means many hours of run time before refueling.

See page 3 for fuel consumption information.

Superior arc performance

•Four preset DIG settings

•Adaptive Hot Start™

•Lift-Arc™ with Auto-Stop™

•MIG/FCAW

See page 2 for more information.

See pages 2 and 3 for more machine features/benefits.

Welder/generator is warranted for 3 years, parts and labor. Engine is warranted separately by the engine manufacturer.

More horsepower — 23 HP gas/

20 HP LP Kohler®. Fully enclosed case provides: reduced sound levels, fully protected engine, and utilizes the same hole mounting pattern as past models.

Reduced sound level of 75.5 dB (100.5 Lwa) at rated load. Quietest in its

class and quieter than most engine drives in the industry!

Self-calibrating digital weld meters with meter maintenance functions.

•Preset and actual weld amperage/voltage

•Hour meter function

•Oil change interval

Exclusive! Digital meters use SunVision™ technology so they are easy to read in direct sunlight or shade.

Exclusive! High-Impact Protective Armor

•Protective armor with receptacle and output stud covers provides a virtually indestructible barrier from damage

•High-impact resistance in all temperatures Other applications include: automotive bumpers, tractor hoods and panels, lawn mower decks, large structural parts, etc.

Output stud and receptacle covers required by OSHA and CSA for job site safety.

Miller Electric Mfg. Co.	International Headquarters	Web Site
An Illinois Tool Works Company	Phone: [phone]	www.MillerWelds.com
1635 West Spencer Street	USA FAX: [phone]
Appleton, WI 54914 USA	Canadian FAX: [phone]
	International FAX: [phone]

Specifications (Subject to change without notice.)

								Sound Levels at
	Weld		Welding		Amp/Volt	Weld Output Rated at		Rated Output,	Single-Phase	Dimensions	Net
	Speed		Mode	Process	Ranges	25 V (at 104°F/40°C)*		7 m (23 ft)	Generator Power		Weight**
	3600 RPM		CV/DC	MIG/FCAW	13 –35 V	300 A, 100% Duty Cycle		75.5 dB	Peak: 5500 watts	H: 33 in (838 mm)	580 lb
								(100.5 Lwa)	Continuous: 5000 watts	W: 20 in (508 mm)	(263 kg)
			CC/DC	Stick/TIG	10–300 A	280 A, 100% Duty Cycle
Gasoline									120/240 VAC, 42/21 A,	D: 45-1/2 in (1156 mm)
	3000 RPM		CV/DC	MIG/FCAW	13–27 V	240 A, 100% Duty Cycle		73 dB
									60 Hz at 1800 RPM
			CC/DC	Stick/TIG	10 – 240 A	240 A, 100% Duty Cycle		(98 Lwa)	2400 watts, 120 VAC,
									60 –120 Hz at all speeds
	1800 RPM		CV/DC	MIG/FCAW	13–22 V	120 A, 100% Duty Cycle		66 dB
								(91 Lwa)
			CC/DC	Stick/TIG	10 – 120 A	120 A, 100% Duty Cycle
LP		Derate outputs up to 5% when using LP fuel.

*Rated at sea level. **Net weight without fuel.

Engine Specifications (Engines warranted separately by the engine manufacturer.)

Engine Brand/			Weld Speed	Idle Speed	Fuel		Low Oil Pressure
Warranty	Horsepower (HP)	Type			Capacity	Oil Capacity	Shutdown
Kohler:	23 HP (gas),	Twin-cylinder, 4-cycle overhead valve,	3600 RPM	2400 RPM	12 gal	1.75 qt (1.7 L),	Standard
3-year mfg.	20 HP (LP) at 3600 RPM	industrial air-cooled gasoline or LP	3000 RPM	1800 RPM	(45 L)	2 qt (1.9 L) with filter

Function Guide

1		7

2

3

4

5

8 6

9

*Category Exclusive

1.Digital Meters display preset amperage or voltage while not welding. Displays actual amperage and voltage while welding and for 5 seconds after welding has stopped.

Meter Maintenance Functions*

•Hour Meter: with engine off, place Engine Control switch in the first RUN/IDLE position to view engine hours.

•Oil Change Interval: with engine off, place Engine Control switch into the second RUN/IDLE position to see hours before next oil change. Oil hours start at 100 and count down to 0 (oil change due).

Note: Negative hours indicated when past recommended oil change interval.

To Reset: Flip Engine Control switch from the RUN/IDLE to RUN position 3 times.

2.Four Preset DIG Settings* offer the best arc characteristics for different electrodes and joint designs. The combined DIG and Process switch along with preset DIG settings makes it easy to set without the complication of multiple switches.

DIG Settings

•Soft arc and smooth 7018 performance.

•Medium-soft driving arc.

•Medium-stiff driving arc.

•Driving arc such as pipe welding.

3.Adaptive Hot Start™* (Stick) automatically sets starting amperage for great arc starts.

4.Great MIG/FCAW Performance with voltage-sensing wire feeders.

5.Lift-Arc™/Scratch Start TIG* with Auto-Stop™ provides great DC starts with both starting techniques. Auto-Stop allows the arc to be stopped without the loss of shielding gas.

6.Standard 14-Pin Receptacle for simple connection of remote controls (not for wire feeder usage). It features Auto Remote Sense™* which automatically switches from Panel to Remote Amperage/ Voltage (A/V) control with remote connected. Eliminates confusion of the Panel/Remote A/V switch.

7.Front Panel Fuel Gauge* LEDs indicate fuel level. The “E” LED lights only when fuel is low.

8.Speed Control Switch locks engine speed at 1800 RPM for uninterrupted 60 Hz generator power and light welding loads.

9.Engine Choke Control

2