Hobart OM-303 manual Table of Contents

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.)

The following terms are used interchangeably throughout this manual:

TIG = GTAW

Stick = SMAW

TABLE OF CONTENTS

SECTION 1 – SAFETY PRECAUTIONS		1
1-1.	Symbol Usage	1
1-2.	Arc Welding Hazards	1
1-3. Additional Symbols for Installation, Operation, and Maintenance		3
1-4.	Principal Safety Standards	3
1-5.	EMF Information	4

SECTION 1 – CONSIGNES DE SECURITE		5
1-1.	Signification des symboles	5
1-2.	Dangers relatifs au soudage à l’arc	5
1-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement
	et la maintenance	7
1-4.	Principales normes de sécurité	8
1-5.	Information sur les champs électromagnétiques	8

SECTION 2 – DEFINITIONS		9
2-1.	General Precautionary Label	9
SECTION 3 – INTRODUCTION		10
3-1. Included with Your Unit		10
3-2.	Specifications	11
3-3.	Duty Cycle Chart	11
3-4.	Volt-Ampere Curves	11
SECTION 4 – INSTALLATION		12
4-1.	Selecting a Location	12
4-2.	Typical Stick Connections	12
4-3.	Typical TIG Connections	13
4-4.	Electrical Service Guide	14
4-5.	Connecting Input Power	14
SECTION 5 – OPERATION		15
5-1.	Controls	15
5-2. Example of Front Panel Amperage Control		16
5-3. Example of Remote Amperage Control		16
5-4. Process and Material Thickness Guide Label		17
SECTION 6 – MAINTENANCE AND TROUBLESHOOTING		18
6-1.	Routine Maintenance	18
6-2.	Troubleshooting	18
SECTION 7 – ELECTRICAL DIAGRAMS		19
SECTION 8 – HIGH FREQUENCY		20
8-1. Welding Processes Requiring High Frequency		20
8-2.	Incorrect Installation	20
8-3.	Correct Installation	21
SECTION 9 – PARTS LIST		22
WARRANTY