WARNING

This product, when used for welding or cutting, produces fumes or gases which contain chemicals known to the State of California to cause birth defects and, in some cases, cancer. (California Health & Safety Code Section 25249.5 et seq.)

WARNING

Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.

WARNING

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

The following terms are used interchangeably throughout this manual:

TIG = GTAW

Stick = SMAW

TABLE OF CONTENTS

SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING

1

1-1.

Symbol Usage

1

1-2.

Arc Welding Hazards

1

1-3.

Engine Hazards

2

1-4. Additional Symbols For Installation, Operation, And Maintenance

3

1-5.

Principal Safety Standards

4

1-6.

EMF Information

4

SECTION 1 – CONSIGNES DE SÉCURITÉ – LIRE AVANT UTILISATION

5

1-1.

Signification des symboles

5

1-2.

Dangers relatifs au soudage à l’arc

5

1-3.

Dangers existant en relation avec le moteur

6

1-4. Dangers supplémentaires en relation avec l’installation, le fonctionnement

 

 

et la maintenance

7

1-5.

Principales normes de sécurité

8

1-6. Information sur les champs électromagnétiques

8

SECTION 2 – DEFINITIONS

9

2-1.

Symbols And Definitions

9

SECTION 3 – SPECIFICATIONS

9

3-1.

Weld, Power, And Engine Specifications

9

3-2.

Dimensions, Weights, And Operating Angles

10

3-3.

Fuel Consumption

10

3-4.

Duty Cycle And Overheating

11

3-5.

AC Auxiliary Power

11

3-6.

Optional AC Power Plant Curves

12

3-7.

Volt-Ampere Curves

13

SECTION 4 – INSTALLATION

14

4-1.

Installing Welding Generator

14

4-2.

Connecting The Battery

14

4-3.

Installing Muffler

14

4-4.

Engine Prestart Checks

15

4-5.

Connecting To Weld Output Terminals

16

4-6.

Selecting Weld Cable Sizes

16

4-7.

Remote 14 Receptacle RC3 Information (Optional, See Section 4-8)

17

4-8.

Terminal Strip 3T Connections (Optional)

17

SECTION 5 – OPERATING WELDING GENERATOR

18

5-1.

Front Panel Controls (See Section 5-2)

18

5-2.

Description Of Front Panel Controls (See Section 5-1)

19

5-3.

Remote Control (Optional)

20

SECTION 6 – OPERATING AUXILIARY EQUIPMENT

21

6-1.

120 Volt Duplex And Optional GFCI Receptacles

21

6-2.

240 Volt Duplex Receptacle (Optional)

22

6-3.

Connecting Optional Auxiliary Power Plant

23

SECTION 7 – MAINTENANCE AND TROUBLESHOOTING

24

7-1.

Routine Maintenance

24

7-2.

Maintenance Label

25

7-3.

Servicing Air Cleaner

26

7-4.

Overload Protection

26

7-5.

Changing Engine Oil And Filter

27

7-6.

Changing Fuel Filter

28

7-7.

Inspecting And Cleaning Optional Spark Arrestor Muffler

28

7-8.

Adjusting Engine Weld/Power Speed

29

7-9.

Adjusting Engine Idle Speed

30

7-10. Adjusting Governor Sensitivity

30

7-11.

Adjusting Optional High Altitude Carburetor

31

7-12.

Troubleshooting

31

SECTION 8 – ELECTRICAL DIAGRAMS

35

SECTION 9 – AUXILIARY POWER GUIDELINES

38

SECTION 10 – PARTS LIST

46

OPTIONS AND ACCESSORIES

 

WARRANTY

 

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Hobart Welding Products OM-477 manual Table of Contents
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OM-477 specifications

Hobart Welding Products has long been recognized for delivering high-quality welding equipment tailored to the needs of both professionals and DIY enthusiasts. Among its distinguished offerings is the OM-477, a versatile multi-process welder designed to excel in a variety of welding applications. This machine integrates an array of features and technologies that cater to both novice and experienced welders.

One of the defining characteristics of the OM-477 is its multi-process capability, which allows users to perform MIG, TIG, and stick welding with ease. This flexibility makes it an ideal choice for a wide range of projects, from automotive repair to light fabrication tasks. The seamless transition between processes is facilitated by a user-friendly interface that simplifies the selection and adjustment of settings, ensuring a smoother workflow.

The OM-477 is powered by a robust, industrial-grade inverter technology that provides high arc stability and increased energy efficiency. This not only enhances performance but also reduces power consumption, making it an environmentally friendly option. Welders can operate at various output ranges, accommodating different materials, including mild steel, stainless steel, and aluminum, thus ensuring versatility in project execution.

Another notable feature of the OM-477 is its portability. Weighing in at a manageable size, this welder is equipped with a durable carry handle, allowing for easy movement between job sites or within the workshop. This characteristic complements its user-friendly setup, making it accessible for individuals of all skill levels.

Safety is a pivotal aspect of the design of the OM-477. It incorporates multiple safety features such as a thermal overload protection mechanism, ensuring that the machine operates well within safe parameters. This is crucial for preventing overheating, thereby extending the welder's lifespan and reducing maintenance costs over time.

Additionally, the OM-477 offers precise control over welding parameters, enabling users to fine-tune their settings for optimal results. Whether tackling thin sheet metal or thicker materials, the welder’s adjustment capabilities ensure a clean, professional finish.

In summary, the Hobart OM-477 stands as a testament to innovative welding technology, combining multi-process functionality, inverter efficiency, portability, and safety into a single machine. It is a reliable tool designed to empower welders at any skill level, making it a worthy addition to any welding arsenal. With the OM-477, Hobart Welding Products continues to champion quality and user satisfaction in the welding industry.
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