Lincoln Electric IM620-B manual Safety Precautions, Power Source Connection

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INSTALLATION

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SAFETY PRECAUTIONS

WARNING

Unless an optional output control or contactor is used with the LN-25, the electrode circuit (including welding wire, wire drive and welding gun) is electrically hot when the welding power source is on. The gun trigger controls wire feed only.

Disconnect or shut off welding power source before making connections or installations to the LN-25.

Welding gun should be stored in the insulated gun holder, located near the rear on the top of the LN-25 case, to avoid accidental arcing.

The LN-25 should be positioned upright on a horizontal surface.

WARNING

ELECTRIC SHOCK can kill.

•Do not touch metal portions of the LN-25 lead clip when welding power source is on.

WARNING

ELECTRIC SHOCK can kill.

•Do not operate with covers removed.

•Turn off power source before installing or servicing.

•Do not touch electrically hot parts.

•Turn the input power to the welding power source off at the fuse box before working in the terminal strip.

•Only qualified personnel should install, use or service this equipment.

DC-250

a. Connect a jumper from 2 to 4 on the power source terminal strip so the output will be energized when the DC-250 is turned on.

POWER SOURCE CONNECTION

The LN-25 can be used with most DC welding power source. A constant voltage power source is recommended; however, the LN-25 can also be used with a constant current power source as long as the open circuit voltage is less than 110V DC.

CAUTION

Do not use LN-25 models below Code 9200 with any TIG or Square Wave welding power sources. Do not use LN-25 models equipped with internal contactors with non- Lincoln TIG or Square Wave welding power sources. Damage to the LN-25 circuit can occur as a result of the high output inductance typically associated with these power sources. TIG high frequency power should never be applied to the LN-25.

If not using an LN-25 Remote Output Control option (See Remote Output Control Options and Cable Assemblies Section), the power source output must be electrically “hot” at all times when the power source is turned on.

See the power source instruction manual for proper power source connections and setting required.

b. Connect electrode cable to the “Innershield/ GMAW” output terminal of polarity required by electrode. Connect work lead to other “Innershield/GMAW” output terminal.

c.Place “Set to CV Electrode Cable Polarity” switch at appropriate position.

d.Place power source toggle switch in “Output Control at DC-250” position, unless a Remote Control is connected to 75, 76 and 77 on the DC- 250 terminal strip.

e.Place mode switch in “Innershield GMAW (CV)” position. Set CV arc control to “2” (or “NORMAL” on some machines) . Initially set the output control on “7”.

DC-400 AND CV-400

a. Connect a jumper from 2 to 4 on the power source terminal strip so the output will be energized when the power source is turned on.

NOTE: DC-400 machines above Code 9200 have an output toggle switch to perform this function.

b. Connect the electrode cable to the output terminal of polarity required by electrode .

LN-25

Connect work lead to other output terminal.

 

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Contents LN-25 Portable CV/CC Semiautomatic Wire Feeder California Proposition 65 Warnings SafetyElectric Shock can kill Cylinder may explode if damaged Sûreté Pour Soudage a L’Arc Précautions DE SûretéPlease Examine Carton and Equipment For Damage Immediately Table of Contents Installation Power Source Connection Safety PrecautionsGUN Cable Connection to Feeder INVERTEC, CV300 and Other Newer Lincoln Power SourcesCV Adapter For GMA GUN and CablesWeld Cable Connection Wire Feed Drive Roll and Guide Tube KitsElectrode Cable Connection Work Cable ConnectionGeneral Description OperationRecommended Processes and Equipment Welding CapabilityWire Feed Mode Switch Electrode Polarity SwitchWire Speed Dial and Range Switch LN-25 Instruments and ControlsWork Clip Lead GAS Post PRE-FLOW Timers OptionalAWG Remote ARC Voltage Control OptionalLoading Electrode Sequence of OperationMounting 22 to 30 LB READI-REELCOILS Mounting 10 to 30 LB SpoolsIdle Roll Pressure Setting Loading Wire DrivePresetting Wire Feed Speed Setting Constant Wire Feed Speed CV ModeSetting ARC Sensing Wire Feed Speed VV CC Mode In/Min Making a WeldWelding Procedure AT END of CoilAutomatic Protection Shutdown Overvoltage ShutdownMotor Overload Shutdown Accessories LN-25 Option ChartTable C.1 Accessories Optional Accessories K434-1 GAS Flow Timer KITK430-2 GAS Solenoid KIT Remote Output Control Options and Control Cable Assemblies K461 Pulse Power Control CableK443-2 LN-25 Contactor KIT K443-3 LN-25 Contactor KITK432 Remote Control Cable Assembly K433 Power Source Remote BOXK439 Remote Extension Cable Assembly K625, K626, K627 Remote Control Cable AssemblyCable Power SourceType Rating Electrode Connection K444, K444-1 or K444-2 Remote Voltage Control KITDia. Hole Drive Roll & Guide Tube Wire Sizes Used Kit NoRoutine Maintenance MaintenanceAdjusting Speed Sensor Module Circuit Protection and Automatic ShutdownCalibration of LN-25 Wire Speed Dial HOW to USE Troubleshooting Guide TroubleshootingRecommended Course of Action Problems Possible Symptoms CauseFeeding Problems Weld Problems Wiring Diagram Wiring Diagram LN-25 Physical Dimensions DimensionsLN-25 LN-25 Fuera del área de trabajo Cuerpo GroundInflammable Votre corps PerschutzGuards off Keep your head out of fumesUse ventilation or exhaust to Desconectar el cable de ali No operar con panel abierto o
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