Lincoln Electric SVM176-A service manual Operation, Loading the Wire Reel, Product Description

Page 14

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B-2

OPERATION

B-2

SAFETY PRECAUTIONS

 

 

circuit is interlocked by a weld current sensing reed

 

 

switch so that while welding, the gun trigger switch

 

 

 

 

does not have to be held closed. The welding process

 

WARNING

 

 

 

 

 

is stopped by pulling the gun away from the work. The

 

ELECTRIC SHOCK can kill.

 

 

electrode remains cold until the gun trigger is operated

 

 

 

again.

 

 

• Do not touch electrically live parts

The LN-23Pvoltage control is used to adjust the power

 

such as output terminals or internal

 

wiring.

 

 

source output. Also included is an analog voltmeter

• When inching with gun trigger, electrode and

which allows easy setting of the arc voltage at the LN-

drive mechanism are “hot” to work and ground

23P once the arc is established.

 

and could remain energized several seconds

LOADING THE WIRE REEL

 

after the gun trigger is released.

 

 

 

• Turn OFF input power at welding power source

• Lay the LN-23P flat with the wire reel cover up,

before installation or changing drive roll and/or

unclip the rubber retaining strap, and remove the

guide tubes.

 

 

cover.

cover

• Welding power source must be connected to

• Remove the center clamping nut and the

system ground per the National Electrical Code

plate from the wire reel.

 

or any applicable local codes.

 

 

• Unpack the 14-pound coil of wire. Be sure not to

• Only qualified personnel should perform this

bend the side tangs of the coil liner and straighten

any tangs that may have been bent.

 

installation.

 

 

• Place the coil on the wire reel so the coil will unwind

------------------------------------------------------------------------

when it rotates in a clockwise direction.

 

PRODUCT DESCRIPTION

 

 

• Remove the start end of the coil from its holding slot

 

 

in the coil liner, cut off the bent end, straighten the

The K316L-[ ] / LN-23P is an arc voltage powered,

first few inches and thread it through the wire feed

lightweight, portable wire feed unit which includes cali-

conduit connected to the wire enclosure until sever-

brated wire speed control, voltage control, wire drive

al inches of electrode are exposed. Be careful not to

with enclosed 14 lb. wire reel, analog voltmeter and

release the electrode until it is through the wire feed

various input control and electrode cable lengths.

conduit; otherwise, it will unwind and tangle.

 

• Be sure all the lower tangs of the coil liner are flush

The LN-23P was designed specifically for Innershield

against the back half of the wire reel and that none

pipe welding, but, with the proper electrode, can be uti-

of the upper tangs are bent in against the coil.

lized for general purpose welding.

 

 

• Replace the reel cover plate and the center clamp-

 

 

ing nut.

 

The feeder is designed for welding with 14 pound coils

• Replace the cover of the wire reel enclosure and

of .068 and 5/64 Innershield self-shielding electrodes

clip the retaining strap in place.

 

using a constant voltage type DC power Source. When

• Pull about 2 feet of the exposed end of the elec-

shipped, it is internally connected for welding with elec-

trode through the wire feed conduit. Slide the insu-

trode negative polarity (DC–). Depending upon which

lator all the way up on the wire feed conduit.

 

gun and cable is used, its rating is either 350 amps or

Make a single, free loop in the electrode and feed

250 amps at 60% duty cycle.

 

 

the end into the section of wire feed conduit con-

 

 

nected to the gearbox. Press the gun trigger and

The wire speed control has a calibrated dial plate with

push the electrode into the drive rolls. Release the

a range of 30 to 170 inches per minute which allows

electrode as soon as it is picked up by the drive

quick and easy setting of the procedure wire feed

rolls. Continue feeding electrode until the excess

speed. The wire speed is not affected by changes in

length is fed through the drive rolls. Watch the sin-

the arc voltage setting even though the wire feed circuit

gle loop and guide it if necessary to make certain it

is powered by arc voltage. A two-position switch,

untwists without kinking. Do not feed electrode

mounted on the gun provides a reduced speed circuit.

through the gun cable at this time. Slide the insula-

This allows selection of either the preset wire speed or

tor down on wire feed conduit until it slips over sec-

83% of the preset speed.

 

 

tion of conduit connected to gearbox.

 

 

 

• Set the unit upright on floor, straighten the gun

A low voltage gun trigger circuit turns both the power

cable, press the gun trigger, and feed electrode

source output and wire feed on and off. The gun trigger

through the gun and cable assembly.

 

LN-23P

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Contents Safety Depends on You LN-23PFor Engine SafetyPowered equipment Electric Magnetic FieldsCan be dangerous Electric Shock can kill ARC Rays can burnFumes and Gases For Electrically Cylinder may explodeCause fire or explosion If damaged IiiLES Machines À Souder À Précautions DE SûretéPrécautions DE Sûreté Pour Transformateur ET ÀMaster Table of Contents for ALL Sections Table of Contents Installation Section Environmental Rating InstallationTechnical Specifications LN-23P Work Cable and Remote Voltage Safety PrecautionsInput Cable Sensing Work LeadInnershield GUN and Cable Wire Drive Rolls and Guide TubesOptional Features Installation Accessories Power SourceLN-23P Operation Section B Table of ContentsOperation Section Product Description Loading the Wire ReelOperation Voltage Adjusting Wire Feed SpeedDrive Roll Pressure Making the WeldLN-23P Accessories Section Accessories Section CGUN and Cable Assemblies Enclosed Wire Reel SupportOptional Equipment K350 Adapter KITMaintenance Section Maintenance Section DWire Drive Assembly Maintenance MaintenanceGUN and Cable Maintenance Removing Idle Roll AssemblyCircuit Protection NameplatesLN-23P Theory of Operation Section Section E E-2E-2E-3E-3E-3E-4General Description Input Power CircuitTheory of Operation Figure E.3 Control Circuits Optional Circuits K350 / K350-1ADAPTER KitsK350 / K350-1ADAPTER Kits LN-23P Section F-1 Troubleshooting and RepairTroubleshooting and Repair Section F How To Use Troubleshooting Guide Important Troubleshooting TipsElectric Shock Troubleshooting & RepairPC Board Troubleshooting Procedures Gun Perform Potentiometer Test K350 Adapter Problems Call LN-23PMaterials Needed Wire Feeder TestTest Description Wire Feeder Test Test ProcedureGUN Test 10TROUBLESHOOTING and REPAIRF-10 GUN TestFeed Head Test 12TROUBLESHOOTING and REPAIRF-12 Feed Head TestPotentiometer Test Potentiometer Test 14TROUBLESHOOTING and REPAIRF-14Wire Speed Control Potentiometer K350-1 Adapter Test 16TROUBLESHOOTING and REPAIRF-16 K350-1 Adapter TestMeasurement Points Expected Reading 18TROUBLESHOOTING and REPAIRF-18 Calibration CheckSection G-1 Electrical Diagrams SectionElectrical Diagrams Section G Electrical Diagrams Wiring Diagram Entire Machine M14197Schematic 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.
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