Lincoln Electric SVM158-A service manual TIG Solenoid Option

B-4 OPERATION B-4

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•The Arc Control regulates the Arc Force to adjust the short circuit current. The minimum setting (-10) will produce a "soft" arc and will produce minimal spat- ter. The maximum setting (+10) will produce a "crisp" arc and will minimize electrode sticking.

TIG GTAW: The TIG mode features continuous control from 5 to 425 amps. The TIG mode can be run in either the TIG touch start or high frequency (optional equip- ment required) assisted start mode.

•The Hot Start control selects the starting mode desired. A setting of less than 5, the TIG lift start mode is selected. The OCV is controlled below 10v and the short circuit "TIG touch" current is main- tained at 25 amps independent of the preset current. When the tungsten is lifted, an arc is initiated and the output is regulated at the preset value. Hot start settings between 0 and 5 regulate the arc initiation current. A setting of 5 results in the most positive arc initiation. A setting of 0 reduces hot start.

•Hot Start settings between 5 and 10, select high fre- quency assisted starting TIG mode. In this range, the OCV of the machine is controlled between 50 and 70 volts. If using the Lincoln K930-1 TIG Module, set the Hot start to 10 for maximum OCV.

•The Arc Control is not used in the TIG mode.

TIG SOLENOID OPTION

The Solenoid only operates when the V350 is in the TIG mode. If the Weld Terminals are in “Remote” then the solenoid will open when the arc start switch is closed. The solenoid will close after the arc switch has been opened and the post flow time expired.

If the Weld Terminals are turned “ON”, then the sole- noid will open when the electrode is touched to the work. The electrode needs to remain in contact with the work to allow for gas coverage before attempting to start the arc. The solenoid will close after the arc has been broken and the post flow time expired.

CV-WIRE:The CV-WIRE mode features continuous control from 10 to 40 volts. The mode was intended for most GMAW, FCAW, and MCAW applications.

•The Hot Start control is not used in the CV-WIRE mode.

•The Arc Control regulates pinch effect. At the mini- mum setting (-10), minimizes pinch and results in a soft arc. Low pinch settings are preferable for weld- ing with gas mixes containing mostly inert gases. At the maximum setting (+10), maximizes pinch effect and results in a crisp arc. High pinch settings are preferable for welding FCAW and GMAW with CO2.

CV-INNERSHEILD:The CV-INNERSHEILD mode features continuous control from 10 to 45 volts. This mode was designed for self-shielded flux cored wires that require tight voltage control.

•The Hot Start control is not active in the CV-FLUX CORED mode.

•The Arc Control regulates pinch effect. At the mini- mum setting (-10), minimizes pinch and results in a soft arc. At the maximum setting (+10), maximizes pinch effect and results in a crisp arc. Most self- shielded wires work well at an Arc Control setting of 5.

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V350-PRO