Lincoln IM985 manual Downhill Pipe Welding, TIG Welding, For Re-Striking Electrodes

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b-8

OPERATION

b-8

 

 

 

E6010 - Touch, Lift to Start the Arc

E7018, E7024 - Touch, Rock Back and Forth in Joint, Lift .

Once the arc is started, normal welding technique for the application is then used.

b. For Re-Striking Electrodes

Some electrodes form a cone at the end of the elec- trode after the welding arc has been broken, particu- larly iron powder and low hydrogen electrodes. This cone will need to be broken off in order to have the metal core of the electrode make contact.

E6010 - Push, Twist in Joint, Lift

E7018, E7024 - Push, Rock Back and Forth in Joint,

Lift.

Once the arc is started, normal welding technique for the application is then used.

For other electrodes the above techniques should be tried first and varied as needed to suit operator prefer- ence. The goal for successful starting is good metal to metal contact.

For indicator light operation, see table B.1.

DOWNHILL PIPE WELDING

This slope controlled setting is intended for "out-of-posi- tion" and "down hill" pipe welding where the operator would like to control the current level by changing the arc length.

The OUTPUT CONTROL dial adjusts the full output range for pipe welding.

The ARC CONTROL dial sets the short circuit current (arc-force) during stick welding to adjust for a soft or more forceful digging arc (crisp). Increasing the number from -10(soft) to +10(crisp) increases the short circuit current which results in a more forceful digging arc.

Typically a forceful digging arc is preferred for root and hot passes. A softer arc is preferred for fill and cap pass- es where weld puddle control and deposition (“stacking” of iron) are key to fast travel speeds. This can also increase spatter.

It is recommended that the ARC CONTROL be set to the minimum number without electrode sticking. Start with the dial set at 0.

NOTE: With the VRD switch in the “ON” position there is no output in the DOWNHILL PIPE mode. For indicator light operation, see table B.1.

TIG WELDING

The TOUCH START TIG setting of the MODE switch is for DC TIG (Tungsten Inert Gas) welding. To initiate a weld, the OUTPUT CONTROL dial is first set to the desired current and the tungsten is touched to the work. During the time the tungsten is touching the work there is very little voltage or current and, in general, no tungsten contamination. Then, the tungsten is gently lifted off the work in a rocking motion, which establishes the arc.

When in the TOUCH START TIG mode and when a Amptrol is connected to the 6-Pin connector the OUT- PUT CONTROL dial is used to set the maximum cur- rent range of the current control of the Amptrol.

The ARC CONTROL is not active in the TIG mode. To STOP a weld, simply pull the TIG torch away from the work.

When the arc voltage reaches approximately 30 Volts the arc will go out and the machine will reset the cur- rent to the Touch Start level.

To reinitiate the arc, retouch the tungsten to the work and lift. Alternatively, the weld can be stopped by releasing the Amptrol or arc start switch.

The AIR VANTAGE® 500 KUBOTA can be used in a wide variety of DC TIG welding applications. In gener- al the ‘Touch Start’ feature allows contamination free starting without the use of a Hi-frequency unit. If desired, the K930-2 TIG Module can be used with the AIR VANTAGE® 500 KUBOTA . The settings are for reference.

AIR VANTAGE® 500 KUBOTA settings when using the K930-2 TIG Module with an Amptrol or Arc Start Switch:

•Set the MODE Switch to the TOUCH START TIG setting.

•Set the "IDLER" Switch to the "AUTO" position.

•Set the "WELDING TERMINALS" switch to the

"REMOTELY CONTROLLED" position.

This will keep the "Solid State" contactor open and provide a "cold" electrode until the Amptrol or Arc Start Switch is pressed.

When using the TIG Module, the OUTPUT CONTROL on the AIR VANTAGE® 500 KUBOTA is used to set the maximum range of the CURRENT CONTROL on the TIG Module or an Amptrol if connected to the TIG Module.

NOTE: The TIG process is to receive a low voltage welding process. There is no difference in operation with the VRD “On” or “Off” for this mode. For indicator light oper- ation, see table B.1.

AIR VANTAGE® 500 KUbOTA

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Contents Safety Depends on You 11470Safety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiIvSAFETY Précautions DE SûretéPlease Examine Carton and Equipment For Damage Immediately On-Line Product RegistrationTAbLE of Contents Section E ViiSection D Section FInstallation Technical Specifications AIR Vantage 500 KUbOTA K2325Safety Precautions High Altitude Operation High Temperature OperationLifting TowingFuel PRE-OPERATION Engine and COM- Pressor ServiceOIL Fuel CAPSpark Arrestor AIR Cleaner Inlet HoodMuffler Outlet Pipe Welding TerminalsRemote Control Auxiliary Power ReceptaclesSTANDbY Power Connections Connection of AIR Vantage 500 KUbOTA 500 to Premises Wiring Control Cable Model Connection of Lincoln ELEC- Tric Wire FeedersAcross The-Arc Model Shut off welder before making any electrical con- nections Connection of the LN-25 to the AIR Vantage 500 KUbOTATA see Section F Operation General DescriptionGenerator Recommended ApplicationsAIR Compressor WelderDigital Output METERS-The digital Weld Mode Selector SwitchWelding Controls Figure b.1 Wire Feeder Voltmeter Switch TAbLE b.1Engine Controls Glow Plug Push bUTTONStarting the Engine BATTERY Jump Start TerminalAIR Compressor Controls 24 Thru Constant Current CC-STICK Welding Welder OperationStopping the Engine TAbLE b.2For Re-Striking Electrodes Downhill Pipe WeldingTIG Welding TAbLE b.4 Wire WELDING-CVARC Gouging Table b.3 Typical Current RangesBOTH 1 and 3 Phase Auxiliary Power OperationSimultaneous Welding and AUXIL- Iary Power Loads ParallelingAccessories are available at AccessoriesField Installed Options Welders AIR VantageMaintenance Compressor MaintenanceService Instructions Single- and Two-StageEngine Air CleanersOIL Filter Change AIR CleanerEngine OIL Change BLEEDING the Fuel System Cooling SystemTightening the FAN bELT Fuel FilterServicing Muffler with INTER- NAL Spark Arrestor Engine AdjustmentBATTERY Maintenance Checking the Electrolyte LevelTAbLE D.1 Engine Maintenance Components Welder / Generator MaintenanceGfci Module Testing and Resetting Procedure TROUbLESHOOTING HOW to USE TROUbLESHOOTING GuidePOSSIbLE PRObLEMSSymptoms Cause Recommended Course of ActionWelding without a control cable High idle does not work Faulty control cable. Repair or Field Service Facility Your local Lincoln AuthorizedEngine Welders / K867 / K775 / LN-7 Connection Diagram To Work Electrode Cable To Wire Feed UnitKUbOTA Engine Welders / K867 / LN-8 Connection DiagramDiagrams Diagrams Diagrams Diagrams Diagrams Diagrams Diagrams Diagrams Diagrams Diagrams Wiring Diagram Enhanced DiagramDimension Print Bottom View of Welder BaseAIR Vantage 500 KUbOTA Precaucion Warnung
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