Hobart Welding Products 350LX manual Adjusting Spark Gaps, Tools Needed 012 in 0.305 mm

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5-3. Adjusting Spark Gaps

4 4

Tools Needed:

0.012 in (0.305 mm)

5/32 in

YTurn Off power before adjusting spark gaps.

Open access door.

1 Tungsten End Of Point

Replace point if tungsten end dis- appears; do not clean or dress tungsten.

2 Spark Gap

Normal spark gap is 0.012 in (0.305 mm).

If adjustment is needed, proceed as follows:

3 Adjustment Screws

Loosen screws. Place gauge of proper thickness in spark gap.

4 Pressure Point

Apply slight pressure at point until gauge is held firmly in gap. Tighten screws to 12 in/lbs torque (overtigh- tening will deform plastic base). Ad- just other gap.

Reinstall access door.

Ref. ST-801 972-A

OM-356 Page 35

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Contents OM-356188694J ProcessesDescription 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 tuerLE Soudage peut provoquer un incendie ou une explosion DES Particules Volantes peuvent blesser les yeuxLE Bruit peut affecter l’ouïe DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutPrincipales normes de sé curité Information sur les champs é lectromagné tiquesConsignes relatives aux stimulateurs cardiaques Disconnect input plug or power before working on machine DefinitionsKeep your head out of the fumes Manufacturer’s Rating Label For CE Products Symbols And Definitions Location And Airflow InstallationSelecting a Location Movement Falling Unit Can Cause InjurySpecifications Dimensions And WeightsOverheating Duty Cycle And OverheatingVolt-Ampere Curves Minutes Welding Minutes RestingTerminals Weld Output Terminals And Selecting Cable SizesRemote 14 Receptacle ARC Welding can cause Electromagnetic InterferenceNecting to receptacle Turn Off power before conElectrical Service Guide Close and secure primary door Placing Jumper Links And Connecting Input PowerPulse Controls OperationControls For 200/230/460 Volts And Non CE UnitsFor CE Units Output Selector Switch Output Selector SwitchProcess Control Output Control Current ControlWhen HF Continuous is selected, start arc as follows Start ModeWhen Lift-Arc is selected, start arc as follows When HF Start is selected, start arc as followsMeters Amperage Adjustment ControlPreflow Time Control Balance/DIG ControlPostflow Time Control Bkg Amp Setting Pulse ControlsPercent % Peak 50%Optional Sequence Controls High Frequency ControlStart Time/Spot Time Control And Start Current Control Sequence Selection SwitchCrater Time Control And Final Current Control Start/Crater Sequence Controls Sequence Selection Controls Start Sequence Switch 4T PositionSpot Time Control Timer/Cycle CounterMonths Maintenance & TroubleshootingRoutine Maintenance Disconnect power before maintainingAdjusting Spark Gaps Turn Off power before adjusting spark gapsTools Needed 012 in 0.305 mm Voltmeter/Ammeter Help Displays Help 3 Display Indicates the transformer of the unit hasHelp 4 Display There are not user serviceable parts inside unit TroubleshootingCheck for water in torch, and repair torch if necessary Fan not operatingProtect against overheating Circuit Diagram Electrical DiagramWeld Zone Incorrect InstallationHigh Frequency Welding Processes Requiring High FrequencyMetal Building Requirements Correct InstallationNonmetal Building Ground workpiece if required by codes Metal BuildingMain Assembly Parts ListTRANSFORMER/STABILIZER Assembly 200/230/460 Optional 185 Switch, Push Button -1 ItemPage Support ServiceContact your Distributor for Hobart Welding ProductsCall