Hobart OM-303 manual Operation, Controls

Page 19

SECTION 5 – OPERATION

5-1. Controls

6

1

8

7

2

3

5

4

Ref. ST-155 790-F

1 Weld Process Switch

Use switch to select weld process.

In Stick position (down), weld output goes On and Off with Power switch.

In GTAW (TIG) position (up), remote control device turns on and adjusts weld output of unit as limited by Amperage control. Built-in arc starter comes on when needed to start or stabi- lize welding arc. No adjustments needed for arc starter.

2Pilot Light

3Power Switch

Use switch to turn unit, fan, and pilot light On and Off.

4 Amperage Control

For Stick (SMAW), use control to adjust amper- age within range selected by the Range/Polar- ity Switch.

5 Stick (SMAW) Table

Use table to find approximate Stick amperage output at Amperage control setting.

See Section 5-2 for example of front panel am- perage control.

For remote amperage control used when TIG (GTAW) welding, front panel Amperage control setting is the maximum amperage percentage available at the remote control device.

See Section 5-3 for example of remote amper- age control.

6 Range/Polarity Switch

Use switch to select range and polarity of weld output.

For Direct Current Electrode Negative (DCEN), use Electrode Negative position.

For Direct Current Electrode Positive (DCEP), use Electrode Positive position.

For alternating current (AC), use range needed for welding application – AC Low or AC High position – see Warning.

See Section 5-4 to find suggested type of weld output for application.

7 High Temperature Shutdown Light

Lights when unit overheats and shuts down (see Section 6-2).

8 Output On (Contactor) Light

Lights when output (contactor) and unit power are on.

OM-303 Page 15

Page 18 Page 20
Image 19
Page 18 Page 20
Contents Description OM-303155795NProcesses 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 tuerDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionLE Bruit peut affecter l’ouïe DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutInformation sur les champs é lectromagné tiques Principales normes de sé curitéConsignes relatives aux stimulateurs cardiaques Definitions General Precautionary LabelIntroduction Symbols And DefinitionsIncluded with Your Unit Hertz Models SpecificationsDuty Cycle Chart Volt-Ampere CurvesTypical Stick Connections InstallationTurn Off power before mak- ing connections Selecting a LocationTypical TIG Connections Connecting Input Power Electrical Service GuideControls OperationAC Low AC High Example of Front Panel Amperage ControlExample of Remote Amperage Control Gtaw Welding Amperage RangeProcess and Material Thickness Guide Label Routine Maintenance Maintenance and TroubleshootingTroubleshooting Circuit Diagram Electrical DiagramsWeld Zone Incorrect InstallationHigh Frequency Welding Processes Requiring High FrequencyMetal Building Correct InstallationMetal Building Requirements Main Assembly Parts ListDia Part Description Mkgs Quantity Figure -1. Main Assembly Page Page Support ServiceHobart Welding Products Contact your Distributor for
Top Page Image Contents