Hobart OM-303 manual EMF Information, About Pacemakers

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1-5. EMF Information

Considerations About Welding And The Effects Of Low Frequency Electric And Magnetic Fields

Welding current, as it flows through welding cables, will cause electro- magnetic fields. There has been and still is some concern about such fields. However, after examining more than 500 studies spanning 17 years of research, a special blue ribbon committee of the National Research Council concluded that: “The body of evidence, in the committee’s judgment, has not demonstrated that exposure to power- frequency electric and magnetic fields is a human-health hazard.” However, studies are still going forth and evidence continues to be examined. Until the final conclusions of the research are reached, you may wish to minimize your exposure to electromagnetic fields when welding or cutting.

To reduce magnetic fields in the workplace, use the following procedures:

1.Keep cables close together by twisting or taping them.

2.Arrange cables to one side and away from the operator.

3.Do not coil or drape cables around your body.

4.Keep welding power source and cables as far away from opera- tor as practical.

5.Connect work clamp to workpiece as close to the weld as possi- ble.

About Pacemakers:

Pacemaker wearers consult your doctor first. If cleared by your doctor, then following the above procedures is recommended.

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Contents Processes OM-303155795NDescription From Hobart to You Table of Contents Page Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killPrincipal Safety Standards EMF Information About PacemakersSignification des symboles Consignes DE Securite Lire Avant UtilisationUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux Risque D’INCENDIE OU LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sé curitéInformation sur les champs é lectromagné tiques General Precautionary Label DefinitionsIncluded with Your Unit Symbols And DefinitionsIntroduction Specifications Duty Cycle ChartVolt-Ampere Curves Hertz ModelsInstallation Turn Off power before mak- ing connectionsSelecting a Location Typical Stick ConnectionsTypical TIG Connections Electrical Service Guide Connecting Input PowerOperation ControlsExample of Front Panel Amperage Control Example of Remote Amperage ControlGtaw Welding Amperage Range AC Low AC HighProcess and Material Thickness Guide Label Troubleshooting Maintenance and TroubleshootingRoutine Maintenance Electrical Diagrams Circuit DiagramIncorrect Installation High FrequencyWelding Processes Requiring High Frequency Weld ZoneMetal Building Requirements Correct InstallationMetal Building Parts List Main AssemblyDia Part Description Mkgs Quantity Figure -1. Main Assembly Page Page Service SupportContact your Distributor for Hobart Welding Products