Hobart Welding Products 350LX manual Crater Time Control And Final Current Control

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4-17. Crater Time Control And Final Current Control

	(CE Nameplate Only)	1	Sequence Selection Switch
	(CE Nameplate Only)	Place switch in Crater position.
		Place switch in Crater position.
1	1	2	Crater Time Control
1	1

Use control to reduce current over a set period of time (0–15 seconds) at the end of the weld cycle when NOT using a remote current control.

3 Final Current Control

Final current is the current to which weld current has sloped down to (0–100% of current set on Amperage Adjust control).

Application:

Crater Time should be used while GTAW welding materials that are crack sensitive, and/or the opera- tor wants to eliminate the crater at the end of the weld.

2

2

Note: This applies if the operator is using an on/off only type control to start and stop the welding pro- cess.

3

3

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Contents Processes OM-356188694JDescription From Hobart to You Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killPrincipal Safety Standards EMF Information About PacemakersUN Choc É Lectrique peut tuer Signification des symbolesConsignes DE Securite Lire Avant Utilisation LES Fumé ES ET LES GAZ peuvent ê tre dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionLE Bruit peut affecter l’ouïe ’EMPLOI Excessif peut Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresInformation sur les champs é lectromagné tiques Principales normes de sé curitéConsignes relatives aux stimulateurs cardiaques Definitions Disconnect input plug or power before working on machineKeep your head out of the fumes Manufacturer’s Rating Label For CE Products Symbols And Definitions Movement Falling Unit Can Cause Injury InstallationSelecting a Location Location And AirflowDimensions And Weights SpecificationsMinutes Welding Minutes Resting Duty Cycle And OverheatingVolt-Ampere Curves OverheatingARC Welding can cause Electromagnetic Interference Weld Output Terminals And Selecting Cable SizesRemote 14 Receptacle TerminalsTurn Off power before con Necting to receptacleElectrical Service Guide Placing Jumper Links And Connecting Input Power Close and secure primary doorFor 200/230/460 Volts And Non CE Units OperationControls Pulse ControlsFor CE Units Output Selector Switch Output Selector SwitchProcess Control Current Control Output ControlWhen HF Start is selected, start arc as follows Start ModeWhen Lift-Arc is selected, start arc as follows When HF Continuous is selected, start arc as followsAmperage Adjustment Control MetersBalance/DIG Control Preflow Time ControlPostflow Time Control 50% Setting Pulse ControlsPercent % Peak Bkg AmpHigh Frequency Control Optional Sequence ControlsSequence Selection Switch Start Time/Spot Time Control And Start Current ControlCrater Time Control And Final Current Control Start/Crater Sequence Controls Start Sequence Switch 4T Position Sequence Selection ControlsTimer/Cycle Counter Spot Time ControlDisconnect power before maintaining Maintenance & TroubleshootingRoutine Maintenance MonthsTurn Off power before adjusting spark gaps Adjusting Spark GapsTools Needed 012 in 0.305 mm Help 3 Display Indicates the transformer of the unit has Voltmeter/Ammeter Help DisplaysHelp 4 Display Troubleshooting There are not user serviceable parts inside unitFan not operating Check for water in torch, and repair torch if necessaryProtect against overheating Electrical Diagram Circuit DiagramWelding Processes Requiring High Frequency Incorrect InstallationHigh Frequency Weld ZoneMetal Building Correct InstallationNonmetal Building Ground workpiece if required by codes Metal Building RequirementsParts List Main AssemblyTRANSFORMER/STABILIZER Assembly 200/230/460 Optional Switch, Push Button -1 Item 185Page Service SupportHobart Welding Products Contact your Distributor forCall