Hobart OM-353 manual Table of Contents

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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 - READ BEFORE USING		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 – LIRE AVANT UTILISATION		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.	Warning Label Definitions	9
2-2.	Rating Label For CE Products	10
2-3.	Symbols And Definitions	11

SECTION 3 – INSTALLATION		12
3-1.	Specifications	12
3-2.	Volt-Ampere Curves	12
3-3.	Duty Cycle And Overheating	13
3-4.	Selecting A Location	14
3-5.	Dimensions And Weights	14
3-6.	Tipping	15
3-7.	Weld Output Terminals And Selecting Cable Sizes	15
3-8.	Remote 14 Receptacle	16
3-9.	115 Volts AC Duplex Receptacle And Shielding Gas Connections	16
3-10. Electrical Service Guide		17
3-11.	Placing Jumper Links And Connecting Input Power	18

SECTION 4 – OPERATION		19
4-1.	Controls	19
4-2.	Output Selector Switch	20
4-3.	Meters	20
4-4.	Crater Time Controls	21
4-5.	Spot Time Controls	21
4-6.	AC Balance Control	22
4-7.	Amperage Adjustment Controls	23
4-8.	Output (Contactor) Control Switch	23
4-9.	Arc Controls	24
4-10.	Postflow Time Control	24
4-11. High Frequency Controls		25
4-12. Preflow Time Control (Optional)		25

SECTION 5 – MAINTENANCE & TROUBLESHOOTING		26
5-1.	Routine Maintenance	26
5-2.	Circuit Breaker CB1	26
5-3.	Adjusting Spark Gaps	27
5-4.	Troubleshooting	27
5-5.	Circuit Diagram	29

SECTION 6 – HIGH FREQUENCY (HF)		30
6-1.	Welding Processes Using HF	30
6-2.	Sources Of HF Radiation From Incorrect Installation	30
6-3.	Correct Installation	31
SECTION 7 – PARTS LIST		32
OPTIONS AND ACCESSORIES
WARRANTY

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Contents OM-353122200U ProcessesDescription From Hobart to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesPrincipal Safety Standards About Pacemakers EMF InformationLES Fumé ES ET LES GAZ peuvent ê tre dangereux Signification des symbolesConsignes DE Securite Lire Avant Utilisation UN Choc É Lectrique peut tuerLE Soudage peut provoquer un incendie ou une explosion DES Particules Volantes peuvent blesser les yeuxLE Bruit peut affecter l’ouïe DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutPrincipales normes de sé curité Information sur les champs é lectromagné tiquesConsignes relatives aux stimulateurs cardiaques Definitions + + +Rating Label For CE Products ISO/IECSome symbols are found only on CE products Symbols And DefinitionsVolt-Ampere Curves InstallationSpecifications DC Mode AC ModeDuty Cycle And Overheating 60% Duty Cycle At 200 AmperesOverheating Dimensions And Weights Selecting a LocationMovement Location And Airflow ARC Welding can cause Electromagnetic Interference Be careful when placing or moving unit over uneven surfacesTipping Weld Output Terminals And Selecting Cable SizesSocket Turn Off power before connecting to receptacleRemote 14 Receptacle Volts AC Duplex Receptacle And Shielding Gas ConnectionsAll values calculated at 60% duty cycle Electrical Service GuideCheck label inside your unit- only one label is on unit Placing Jumper Links And Connecting Input PowerControls OperationMeters Output Selector SwitchCrater Time Controls Spot Time ControlsApplication Setting Output Waveforms AC Balance ControlBalance Control AC Gtaw Output Contactor Control Switch Amperage Adjustment ControlsArc Controls Postflow Time ControlFor AC And DC Smaw Welding Preflow Time Control Optional High Frequency ControlsMonths Maintenance & TroubleshootingRoutine Maintenance Disconnect power before maintainingAdjusting Spark Gaps TroubleshootingTurn Off power before adjusting spark gaps Reset circuit breaker CB1 see Section Circuit Diagram Welding Processes Using HF Sources Of HF Radiation From Incorrect InstallationHigh Frequency HF Correct Installation Main Assembly Parts ListDia Part Description Quantity Mkgs Panel, Front w/Components Panel, Front w/Components -1 Item Rectifier, Si Diode -1 Item 181Panel, Mtg Components -1 Item Control Panel, Lower Front Control Panel, Lower Front -2 Item OM-353 Page Page Support ServiceHobart Welding Products Contact your Distributor for