Hobart 750 manual Operation, Front Panel Controls

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SECTION 3 – OPERATION

3-1. Front Panel Controls

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1

Ref. 190 676

1 Pilot Arc Switch

Use switch to control pilot arc.

Place switch in Expanded Metal position for continuous pilot arc. Use while cutting ex- panded metals only.

.The Expanded Metal position keeps the pilot arc in the circuit at all times. Life of consumables will be significantly re- duced while in Expanded Metal mode.

Place switch in Tip Saver position to provide pilot arc output for arc starting only. Use Tip

Saver position in most applications to length- en the life of the torch and its consumables, and to obtain maximum cutting performance.

Torch trigger must be reset after every cut while in Tip Saver mode.

2Gas/Air Pressure Gauge

3Output Control

Use control to select cutting output in am- peres. Gas/air automatically flows at the set pressure.

Use Gas/Air Set area of control range for set- ting gas/air pressure (see Section 3-2).

4Trouble Lights (see Section 4-2)

5Ready Light

Ready light comes On when unit is On to indi- cate that all safety shutdown systems are okay. If Ready light does not come On, check trouble lights.

6Power Light

7Power Switch

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Contents OM-279 ProcessesDescription From Hobart to You Table of Contents Page Plasma Arc Cutting Hazards Symbol UsageMarks a special safety message Cutting can cause fire or explosionARC Rays can burn eyes and skin Exploding Parts can injureFlying Sparks can cause injury Noise can damage hearingFlying Metal can injure eyes HOT Parts can cause severe burnsMoving Parts can cause injury Overuse can cause OverheatingPrincipal Safety Standards EMF InformationAbout Pacemakers UNE DÉ Charge É Lectrique peut entraîner la mort Signification des symbolesLE Coupage pré sente un risque de feu ou d’explosion Identifie un message de sé curité particulierLES Fumé ES ET LES GAZ peuvent ê tre dangereux Risque de blessure en casLE Bruit peut endommager l’ouïe LE Plasma D’ARC peut entraîner des blessuresDES Organes Mobiles peuvent provoquer des blessures LES Bouteilles peuvent exploser si elles sont endommagé esDES Pieces Chaudes peuvent pro- voquer des brû lures graves DES Particules Volantes peuvent blesser les yeuxPrincipales normes de sé curité Information sur les champs é lectromagné tiquesConsignes relatives aux stimulateurs cardiaques Dimensions And Weight InstallationSpecifications Duty Cycle And OverheatingSelecting a Location Special installation may beCutting Speed Movement Location And AirflowConnecting Gas/Air Supply Electrical Service GuidePlacing Jumper Links Always connect Connecting Input PowerThree-Phase System Grounding conductor firstOperation Front Panel ControlsSetting Gas/Air Pressure Set pressure to 70 PSI 483 kPaSequence Of Operation Example Of Cutting OperationTrigger is pressed Maintenance & Troubleshooting MonthsTrouble Lights Checking Shield Cup Shutdown SystemTroubleshooting Running slowlyFan motor FM does not run Power light Electrical Diagrams Circuit Diagram For 200/230/460 Volt ModelsCircuit Diagram For 230/460/575 Volt Models OM-279 Parts List Main AssemblyDia Part Mkgs Description Quantity Consumable Parts For ICE-50C Service SupportContact your Distributor for Hobart Welding Products