Lincoln Electric SVM176-A service manual Drive Roll Pressure, Adjusting Wire Feed Speed, Voltage

Page 15
LN-23P

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

B-3

OPERATION

B-3

DRIVE ROLL PRESSURE

 

convenient for the particular application, and retighten

The drive roll pressure is pre-set at the factory for

the screw.

 

When welding, set the wire feeder on the floor or hang

proper feeding. If the idle roll tension must be relieved

temporarily, see the Maintenance Section for proper

it near the work area as convenient. Place the LN-23P

adjustment procedure.

 

to minimize the amount of spatter falling onto it.

 

Always avoid sharp bends and keep the gun cable

ADJUSTING WIRE FEED SPEED AND

as straight as practical.

 

VOLTAGE

 

Be sure the electrode cable, work cable, and control

Set the wire feed as specified in the procedures using

lead are connected and the power source is on.

 

the calibrated dial on the back of the LN-23P control

Press the gun trigger to feed the electrode out of the

box. When the reduced wire speed switch (mounted

on the gun handle) is in Position No. 1, the wire feed

gun. Use a visible stickout equal to the electrical stick-

speed will be that which is indicated on the dial. In

out specified in the procedures for the wire being used.

Position No. 2, the wire feed speed will be 83% of the

Position the gun with the wire just off or lightly touch-

figure indicated on the dial.

 

 

ing the work. Press the gun trigger to start the arc.

Set the voltage by adjusting the voltage control while

Once the arc is established, the gun trigger can be

welding until the voltage specified in the procedures is

released while welding. The gun trigger interlock circuit

indicated on the meter. The meter reading with the

automatically keeps the welding process on. At the end

power source on but not welding is the open circuit

of the weld, pull the gun away from the work.

 

voltage. With some power sources, this voltage may

When not welding, always store the gun in the insulat-

be significantly higher than welding voltage.

When establishing initial procedures, start with the

ed tube on the front of wire feeder.

 

While welding with one feeder of a two-feeder installa-

voltage control set near minimum. Strike an arc on

scrap steel. If the electrode gets hot but the arc fails to

tion the electrode of the second feeder is “HOT”. Only

start, increase the voltage settings until the arc can be

one feeder at a time can be used for welding. Do not

established.

 

press the gun trigger of the idle feeder while the other

 

feeder is being used since this can shut down the feed-

NEVER set the power source open circuit voltage

er being used for welding.

 

higher than 50(1) volts. The LN-23P will not feed wire

 

 

when the voltage is higher than 50(1)

volts.

 

 

When using the CV Converter or the DC-600 and inch-

 

 

ing wire (not welding) at open circuit voltages below 20

 

 

volts or above 25 volts, feeding may be unsteady or

 

 

the wire speed may vary from that set on the dial. This

 

 

condition does not exist while welding. Minimum

 

 

usable arc voltage is 14 volts.

 

 

 

NOTE: For improved readability of the voltmeter in some applications, the voltmeter guard may be installed rotated end for end. This will result in the pro- tective bars crossing the meter face in a different loca- tion.

MAKING THE WELD

Be sure the proper contact tip for either .068" or 5/64" wire, as appropriate, is in the gun. The thread protec- tor should cover the external threads on the nozzle.

Loosen the insulated socket head screw on the side of the gun, rotate the gun nozzle to the position most

(1) 45 volts on DC-600.

Page 14 Page 16
Image 15
Page 14 Page 16
Contents LN-23P Safety Depends on YouElectric Magnetic Fields SafetyPowered equipment For EngineElectric Shock can kill ARC Rays can burn Fumes and GasesCan be dangerous Iii Cylinder may explodeCause fire or explosion If damaged For ElectricallyTransformateur ET À Précautions DE SûretéPrécautions DE Sûreté Pour LES Machines À Souder ÀMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications LN-23PEnvironmental Rating Sensing Work Lead Safety PrecautionsInput Cable Work Cable and Remote VoltageWire Drive Rolls and Guide Tubes Optional Features InstallationInnershield GUN and Cable Power Source AccessoriesLN-23P Table of Contents Operation SectionOperation Section B Loading the Wire Reel OperationProduct Description Making the Weld Adjusting Wire Feed SpeedDrive Roll Pressure VoltageLN-23P Accessories Section C Accessories SectionK350 Adapter KIT Enclosed Wire Reel SupportOptional Equipment GUN and Cable AssembliesMaintenance Section D Maintenance SectionRemoving Idle Roll Assembly MaintenanceGUN and Cable Maintenance Wire Drive Assembly MaintenanceNameplates Circuit ProtectionLN-23P Section E E-2E-2E-3E-3E-3E-4 Theory of Operation SectionInput Power Circuit Theory of OperationGeneral Description Figure E.3 Control Circuits K350 / K350-1ADAPTER Kits Optional CircuitsK350 / K350-1ADAPTER Kits LN-23P Troubleshooting and Repair Troubleshooting and Repair Section FSection F-1 Important Troubleshooting Tips How To Use Troubleshooting GuideTroubleshooting & Repair PC Board Troubleshooting ProceduresElectric Shock Gun Perform Potentiometer Test Call LN-23P K350 Adapter ProblemsWire Feeder Test Test DescriptionMaterials Needed Test Procedure Wire Feeder TestGUN Test GUN Test 10TROUBLESHOOTING and REPAIRF-10Feed Head Test Feed Head Test 12TROUBLESHOOTING and REPAIRF-12Potentiometer Test 14TROUBLESHOOTING and REPAIRF-14 Wire Speed Control PotentiometerPotentiometer Test K350-1 Adapter Test K350-1 Adapter Test 16TROUBLESHOOTING and REPAIRF-16Measurement Points Expected Reading Calibration Check 18TROUBLESHOOTING and REPAIRF-18Electrical Diagrams Section Electrical Diagrams Section GSection G-1 Wiring Diagram Entire Machine M14197 Electrical DiagramsSchematic Entire Machine L6518 Wiring Diagram K350 Adapter KIT M14247 Wiring Diagram K350-1 Adapter KIT M17514 Machine Schematic for K350/K350-1 Adapter PC Board Assembly for Codes below 10892 G1528-4 PC Board Assembly for Codes 10892 and Higher G4184-3 Schematic for LN-23P Codes 10892 and Higher L11838-3

SVM176-A specifications

The Lincoln Electric SVM176-A is a robust and versatile semiautomatic wire feeder designed to cater to a wide range of welding applications. Known for its reliability and ease of use, the SVM176-A is particularly favored in both industrial and construction settings, where efficiency and performance are paramount.

One of the standout features of the SVM176-A is its compact design. This relatively lightweight unit is easy to transport and can fit into tight spaces, making it an ideal choice for mobile applications or projects that require more maneuverability. The unit's construction is durable and built to withstand the rigors of demanding work environments, ensuring longevity and consistent performance.

The SVM176-A supports various welding processes, including MIG (Metal Inert Gas) and flux-cored arc welding, providing versatility for different materials and thicknesses. This adaptability is enhanced by its ability to accommodate a variety of wire sizes, allowing users to select the ideal wire type for their specific project requirements. The equipment also features adjustable wire feed speed, helping to ensure optimal weld quality by allowing operators to tailor their settings based on the needs of the job.

Innovative technologies in the SVM176-A contribute to its performance. The unit is equipped with a digitally controlled microprocessor that streamlines operations, providing enhanced control over welding parameters. This advanced technology enables users to achieve precise welds consistently, minimizing the risk of defects and improving overall efficiency.

Another remarkable characteristic of the SVM176-A is its user-friendly interface. The unit features easy-to-read displays and intuitive controls, enabling operators to make quick adjustments without having to consult an extensive manual. This is particularly beneficial in fast-paced work environments where time is of the essence.

Furthermore, the Lincoln Electric SVM176-A boasts a range of safety features, including thermal overload protection and a sturdy casing, which safeguard both the equipment and the operator. With these characteristics combined, the SVM176-A stands out as a preferred choice for professional welders seeking reliability, versatility, and operational excellence in their equipment. This exceptional wire feeder continues to uphold Lincoln Electric's commitment to quality and performance in welding technology.
Top Page Image Contents