Lincoln Electric SVM176-A GUN and Cable Maintenance, Figuire D.1, Removing Idle Roll Assembly

Page 20

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D-2

MAINTENANCE

 

D-2

SAFETY PRECAUTIONS

 

 

GUN AND CABLE MAINTENANCE

WARNING

 

 

Remove spatter from tip after each ten minutes of arc

Have qualified personnel do the maintenanc

e

work. Turn the engine off before working inside

time or as required.

 

 

the machine. In some cases, it may be

Replace worn contact tips and thread protectors as

necessary to remove safety guards to perform

required maintenance. Remove guards only

required.

 

 

when necessary and replace them when the

Replace worn spring liners in nozzles. The life of the

maintenance requiring their removal is

complete. Always use the greatest care when

spring can be doubled by rotating it 180°.

working near moving parts.

 

 

Clean cables after using approximately 300 pounds of

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

ELECTRIC SHOCK can kill.

electrode. Remove the cable from the wire feeder and

• Do not touch electrically live parts or

lay it out straight on the floor. Remove the contact noz-

electrode with skin or wet clothing.

zle tip from the gun. Using an air hose and only partial

• Insulate yourself from work and

pressure, gently blow out the cable from the gun end.

ground

 

 

(Too much pressure at the start will cause the dirt to

• Always wear dry insulating gloves.

form a plug.) Flex the cable over its entire length and

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

See additional warning

information

again blow out the cable. Repeat this procedure until

throughout this operatorʼs manual and

no further dirt comes out.

 

 

the Engine manual as well.

 

 

Before any gun is disassembled, remove unit from the

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

wire feeder or shut off the power source.

REPLACING OR REVERSING DRIVE ROLLS (See

 

FIGUIRE D.1

Figure D.1)

 

 

2

3

 

Loosen idle roll tension screw (Item 1) to release pres-

 

sure between idle roll and drive rolls.

 

 

 

 

 

 

Remove hex head screw (Item 2) with a 1/2" wrench

 

 

 

 

 

 

 

 

and remove the drive roll clamping collar (Item 3).

 

 

 

 

Remove drive rolls from shaft.

 

 

 

 

 

 

Wipe the drive roll surfaces clean. Then install new

 

 

 

 

 

 

 

 

6

1 4 5

 

drive rolls. If reversing drive rolls, turn drive rolls over so

 

unworn teeth face each other.

 

 

 

IDLE ROLL TENSION

Replace clamping collar and hex head screw.

 

ADJUSTING SCREW

WIRE DRIVE ASSEMBLY MAINTENANCE

Tighten the idle roll tension screw until it bottoms and

then back it out two complete turns. If feeding problems

Every 500 pounds of electrode, the drive roll section

persist, do not increase the tension. check for other

issues such as the wire spool binding or a dirty or dam-

should be inspected and cleaned out if necessary. Do

aged gun cable

 

 

not use a solvent for cleaning the idle roll as it may

REMOVING IDLE ROLL ASSEMBLY

wash lubricant out of the bearing.

Replace drive rolls as required. Drive rolls should be

Remove the idle roll tension screw (Item 1), tension

worn on both sides before replacing. See “A” of this

spring retainer (Item 4), and tension spring (Item 5).

section.

 

 

Pivot the idle roll assembly away from the gearbox and

Check the motor brushes every six months. Replace if

lift it off the pivot pin (Item 6).

 

 

they are less than 1/4" long.

 

 

To re-assemble, replace idle roll assembly, tension

Every year examine the gear box and paint the gear

spring, retainer, and tension screw. Adjust the tension

teeth with moly-disulfide filled grease.

screw as described above.

 

LN-23P

 

 

 

 

 

 

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Contents Safety Depends on You LN-23PSafety Powered equipmentFor Engine Electric Magnetic FieldsCan be dangerous Electric Shock can kill ARC Rays can burnFumes and Gases Cylinder may explode Cause fire or explosion If damagedFor Electrically IiiPrécautions DE Sûreté Précautions DE Sûreté PourLES Machines À Souder À Transformateur ET ÀMaster Table of Contents for ALL Sections Table of Contents Installation Section Environmental Rating InstallationTechnical Specifications LN-23P Safety Precautions Input CableWork Cable and Remote Voltage 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 Adjusting Wire Feed Speed Drive Roll PressureVoltage Making the WeldLN-23P Accessories Section Accessories Section CEnclosed Wire Reel Support Optional EquipmentGUN and Cable Assemblies K350 Adapter KITMaintenance Section Maintenance Section DMaintenance GUN and Cable MaintenanceWire Drive Assembly 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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