Hobart Welding Products 350LX guide

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

OM-356 Page 30

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

Contents

Processes OM-356188694JDescription From Hobart to You Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can kill Flying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or kill Principal Safety Standards EMF Information About Pacemakers UN Choc É Lectrique peut tuer Signification des symbolesConsignes DE Securite Lire Avant Utilisation LES Fumé ES ET LES GAZ peuvent ê tre dangereux DES 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 blessures Information 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 Airflow Dimensions And Weights Specifications Minutes Welding Minutes Resting Duty Cycle And OverheatingVolt-Ampere Curves Overheating ARC Welding can cause Electromagnetic Interference Weld Output Terminals And Selecting Cable SizesRemote 14 Receptacle Terminals Turn Off power before con Necting to receptacle Electrical Service Guide Placing Jumper Links And Connecting Input Power Close and secure primary door For 200/230/460 Volts And Non CE Units OperationControls Pulse Controls For CE Units Output Selector Switch Output Selector SwitchProcess Control Current Control Output Control When 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 follows Amperage Adjustment Control Meters Balance/DIG Control Preflow Time Control Postflow Time Control 50% Setting Pulse ControlsPercent % Peak Bkg Amp High Frequency Control Optional Sequence Controls Sequence Selection Switch Start Time/Spot Time Control And Start Current Control Crater Time Control And Final Current Control Start/Crater Sequence Controls Start Sequence Switch 4T Position Sequence Selection Controls Timer/Cycle Counter Spot Time Control Disconnect power before maintaining Maintenance & TroubleshootingRoutine Maintenance Months Turn 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 unit Fan not operating Check for water in torch, and repair torch if necessaryProtect against overheating Electrical Diagram Circuit Diagram Welding Processes Requiring High Frequency Incorrect InstallationHigh Frequency Weld Zone Metal Building Correct InstallationNonmetal Building Ground workpiece if required by codes Metal Building Requirements Parts List Main Assembly TRANSFORMER/STABILIZER Assembly 200/230/460 Optional Switch, Push Button -1 Item 185Page Service Support Hobart Welding Products Contact your Distributor forCall