Lincoln Electric SVM167-A service manual Operation

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B-3

OPERATION

B-3

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PRODUCT DESCRIPTION

The POWER MIG® 215 is a complete semiautomatic DC voltage arc welding machine built to meet NEMA specifications. It combines a tapped transformer volt- age power source with a constant speed wire feeder to form a reliable robust performance welding system. A simple control scheme, consisting of continuous full range wire feed speed control, and 7 output voltage tap selections provides versatility with ease of use and accuracy.

Other features include a 2" (51 mm) O.D. wire reel spindle with adjustable brake, an integral gas cylinder mounting undercarriage, an adjustable Argon blend flow regulator with cylinder pressure gauge and inlet hose, a 15 ft. (3.6 m) Magnum 250L GMAW gun and cable with fixed (flush) nozzle, a 7 ft. (2.1 m) power cable with plug, and a 10 ft. (3.0 m) work cable with clamp.

Optional Spool Gun and Adapter kit, Dual Cylinder Mounting kit and Aluminum Feeding Kit for push feed- ing with standard built in feeder are also available.

LIMITATIONS

The output voltage/current of the POWER MIG® 215 is subject to vary if the input power to the machine varies, due to its tapped transformer power topology. In some cases an adjustment of WFS preset and/or voltage tap selection may be required to accommodate a signifi- cant drift in input power.

DESCRIPTION OF CONTROLS

See Figure B.1

1.Power ON/OFF Switch — Place the lever in the "ON" position to energize the POWER MIG® 215.

2.Voltage Control — Seven voltage tap selections are provided Labeled "A" (minimum voltage) through "G" (maximum voltage). It should only be adjusted when not welding. The control selection can be preset to the setting specified on the proce- dure decal on the inside of the wire compartment door.

3.Wire Speed Control — This controls the wire feed speed from 50 – 700 inches per minute (1.2 – 17.8 m/min). Wire speed is not affected when changes are made in the voltage control.

FIGURE B.1

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RECOMMENDED PROCESSES AND EQUIPMENT

The POWER MIG® 215 is recommended for GMA welding processes using 10 to 44 lb (4.5 to 20 kg) 2" (51 mm) I.D. spools or Readi-Reel®coils (with option- al adapter) of .025" through .045" (0.6 – 1.2 mm) solid steel, .035" (0.9 mm) stainless, 3/64" (1.2 mm) alu- minum and .035 (0.9 mm), .045" (1.2 mm) Outershield®; as well as .035" (0.9 mm) and .045" (1.2 mm) Innershield® self-shielding electrodes.

The POWER MIG® is factory equipped to feed .035" (0.9 mm) electrodes. It also includes a 200A, 60% duty cycle (or 250A, 40% duty cycle) rated, 15 ft. (3.6 m) GMAW gun and cable assembly equipped for these wire sizes. Use of GMAW processes requires a supply of shielding gas.

WELDING CAPABILITY

The POWER MIG® 215 is rated at 215 amps @ 22 volts, at a 30% duty cycle based on a ten minute cycle time. It is capable of higher duty cycles at lower output currents. The tapped transformer design makes it well suited for use with most portable or in-plant generating systems.

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WIRE DRIVE ROLL

The drive rolls installed with the POWER MIG® have two grooves one for .035(0.9mm) wire and the other for

.045(1.2mm) wire. Drive roll size is indicated by the stenciling on the exposed side of the drive roll.

WIRE SIZE CONVERSION PARTS

The POWER MIG® 215 is rated to feed .025 through

.045" (0.6-1.2 mm) solid or cored electrode sizes. The drive roll kits and Magnum 250L gun and cable parts are available to feed different sizes and types of electrodes. See Accessories section.

POWER MIG® 215

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Contents Safety Depends on You Power MIGCalifornia Proposition 65 Warnings SafetyCan be dangerous Electric Shock can kill ARC Rays can burnWelding and Cutting Sparks can cause fire or explosion Cylinder may explode if damagedIii Sûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Installation SECTION  Table of ContentsTechnical Specifications Power MIG InstallationLocation Safety PrecautionsUncrating the Power MIG InstallationOutput Polarity Connections Cylinder may explode if damaged GUN and Cable InstallationAUXILIARY POWER RECEPTACLES Shielding GASPower MIG Operation SECTION  Wear eye, ear and body protec- tion OPERATIONB-2Operation Procedure for Changing Drive AND IDLE Roll Sets Wire Reel Loading READI-REELS, Spools or CoilsTo Start the Welder Feeding Wire Electrode Idle Roll Pressure SettingWire Drive Configuration Figure B.2b Making a WeldInput Line Voltage Variations Avoiding Wire Feeding ProblemsWire Feed Overload Protection FAN ControlPower MIG Accessories SECTION  Accessories Adapter KIT and Spool GUN 3ACCESSORIESC-3Installed Making a Weld with the Spool GUNPower MIG Maintenance SECTION  Maintenance Table D.1 Liner Removal and Replace MentEnglish Metric Description Size GUN Handle DisassemblyFigure D.2 Major Component Locations Power MIG Theory of Operation SECTION  Line SwitchTheory of Operation Figure E.2 Input Power CircuitFigure E.3 Control Circuits Output Rectification Contactor and Control BoardFigure E.4 Optional Circuits Control BOARD, GUN Trigger and Wire Drive MotorWirefeed Overload Protection Protective Devices and CircuitsThermal and Overload Protection Power MIG TROUBLESHOOTING AND REPAIR SECTION  How To Use Troubleshooting Guide Troubleshooting and RepairPC Board Troubleshooting Procedures Perform the Main Transformer Perform the Output Contactor These capacitors is toxic Avoid contact with any portionYour body Function Problems Wire Speed Potentiometer Test Welding Problems Weld bead is narrow or ropy Make sure the welding proce Main Transformer Test Test DescriptionMaterials Needed Test Procedure ON/OFF Power Switch will be hot during these testsMain Transformer Test X10 Input Voltage Test Points Table F.1. Test PointsWire Drive Motor and Wire Speed Potentiometer Test White BlackTest for Feedback Voltage to Control Board 1109 aVDC Power MIG Output Bridge Rectifier Test Output Bridge Rectifier Test Negative LeadContactor Test Figure F.7. Contactor Terminals and Leads Contactor TestTypical Output Voltage Waveform Machine Loaded MAX TAP G Volts 10.0Normal Open Circuit Voltage Waveform MAX TAP G Volts 20.0Machine Loaded to 180 Amps AT 16 VDC Scope Settings Volts 20.0 Description Control Board ReplacementProcedure Control Board ReplacementWire Drive Motor Assembly Replacement Wire Drive Motor Assembly Replacement Wire DriveBolt Gas Hose TOC Output Diode Bridge Rectifier Replacement Output Diode Bridge Rectifier Mounting Bracket Mounting Bolts Rectifier Power MIG Output Capacitors Replacement Figure F.14. Capacitor Bank Location Output Capacitors ReplacementLead Mounting Bolts Nuts Lock washers 3 places Power MIG Main Transformer Replacement 41TROUBLESHOOTING and Repair F-41See Figure F.17 Main Transformer ReplacementFigure F.17. Leads X9, X10, 104B,104C, & H1B ReplacementX2 X3 X4 X5 X6 X7 Lead Power MIG FAN BLADE/MOTOR Replacement Perform the Output Capacitor Bank Removal Procedure FAN BLADE/MOTOR ReplacementOutput Contactor Replacement Figure F.24 Output Contactor ReplacementMounting Bolts Retest After Repair Table of Contents Electrical Diagrams Section Electrical DiagramsPOWEr miG Power MIG 215 208/220/230VPower MIG 215 208/220/230V for Codes 11099 L12308 SchEmaTic cOmplETE machiNE cODE 11247 l12308 pG1SchEmaTic cOmplETE machiNE cODE 11247 l12308 pG2 ElEcTrical DiaGramS ElEcTrical DiaGramS ElEcTrical DiaGramS ElEcTrical DiaGramS ElEcTrical DiaGramS ElEcTrical DiaGramS