Lincoln Electric 170I manual Wire Threading, Figure B.4

Page 19

B-4

 

OPERATION

 

B-4

 

 

 

 

 

Wire Threading

Refer to Figure B.4

1.Release the Spring Loaded Pressure Arm (1) rotate the Idle Roll Arm (2) away from the Wire Feed Drive Roll (3). Ensure that the groove size in the feeding position on the drive roll matches the wire size being used. See Maintenance section for further information.

2.Carefully detach the end of the wire from the spool. To prevent the spool from unwinding, main- tain tension on the wire until after step 5.

3.Cut the bent portion of wire off and straighten the frist 4” (100 mm).

4.Thread the wire through the ingoing guide tube (4), over the drive roll (3), and into the outgoing guide tube (5).

5.Close the idle roll arm and latch the spring loaded pressure arm (2) in place. Rotate the spool coun- terclockwise if required to take up extra slack in the wire.

6.The idle roll pressure adjustment wing nut is nor- mally set for mid-position on the pressure arm threads. If feeding problems occur because the wire is flattened excessively, turn the pressure adjustment counter-clockwise to reduce distortion of the wire. Slightly less pressure may be required when using 0.023 – 0.025” (0,6 mm) wire. If the

6.drive roll slips while feeding wire, the pressure should be increased until the wire feeds properly.

WARNING

When inching the welding wire, the drive rolls, the gun connector block and the gun contact tip are electrically energized relative to work and ground and remain energized for several seconds after the gun trigger is released.

7.Refer to Figure B.5. Remove gas nozzle and con- tact tip from end of gun.

FIGURE B.4

2

 

1

5

4

3

 

 

 

 

 

The Wire Drive Feed Roll can

 

 

 

 

 

 

accommodate two wire sizes by

 

 

 

flipping the wire drive feed roll

 

 

 

 

 

over.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.Turn the Handymig 170i ON (“I”).

9.Straighten the gun cable assembly.

10.Depress the gun trigger switch and feed welding wire through the gun and cable. (Point gun away from yourself and others while feeding wire.) Release gun trigger after wire appears at end of gun.

11.Turn the Handymig 170i OFF (“O”).

FIGURE B.5

Gun Handle

Gas Diffuser/

Contact Tip

Gas Nozzle

12.Replace contact tip and gas nozzle.

13.Refer to Figure B-6. Cut the wire off 1/4” – 3/8” (6

– 10 mm) from the end of the tip. The Handymig 170i is now ready to weld.

Handymig 170i

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Contents Handymig For Engine powered equipment SafetyElectric and Magnetic Fields may be dangerous Iii Electric Shock can killARC Rays can burn Fumes and Gases can be dangerousWelding Sparks can cause fire or explosion Cylinder may explode if damagedAssessment of Area Instructions for ELECTRO- Magnetic CompatibilityPlease Examine Carton and Equipment For Damage Immediately Table of Contents Section F ViiiSection D Section ETechnical Specifications Handymig InstallationIdentify and Locate Components Safety PrecautionsStacking Work Clamp InstallationSelect Suitable Location Output ConnectionsGAS Connection GUN InstallationWork Cable Installation Connecting Gun Cable to the HandymigFigure A.5 Input ConnectionsLine Cord Connection Electrical Input Connection For Rated OutputGeneral Description Design Features AdvantagesOperational Features and Controls OperationWelding Capability Controls and SettingsLimitations Welding Operations Wire LoadingSequence of Operation Figure B.4 Wire ThreadingProcess Guidelines Cleaning Tip And NozzleMaking a Weld Shielding Gas Changing Machine Over to Feed Other Wire SizesWelding with Gmaw MIG Welding with Fcaw InnershieldOverload Protection Learning to WeldLearning to Weld Gmaw MIG Welding ARC SELF-SHIELDED Fcaw Welding ARCCommon Metals Process SelectionJoint Types and Positions Penetration Welding In The Vertical PositionFillet Welds Correct Welding Position Machine SET UP for the SELF-SHIELDED Fcaw ProcessWelding Techniques for the SELF- Shielded Fcaw Process Vertical-down WeldingCorrect Welding Speed Correct Electrical Stickout ESOPractice Helpful HintsWelding Techniques for the Gmaw MIG Process Machine SET UP for the Gmaw MIG ProcessFor the Handymig 170i, use the following To Eliminate Stubbing* in order of importance Troubleshooting WeldsTo Eliminate a Ropy Convex Bead To Correct Poor Penetration in order of impor- tanceProper Gun Handling Application Chart Routine Maintenance MaintenanceGUN and Cable Maintenance Changing the Contact TIP Component Replacement ProceduresChanging Drive Roll GUN Handle Parts Changing LinerLiner trim length Ground Test Procedure HOW to USE Troubleshooting Guide 1TROUBLESHOOTINGE-1Recommended Course of Action TroubleshootingTroubleshooting Guide Problems Possible Areas Symptoms MisadjustmentsContact your local Liquid Arc Authorized Field Service FacilityWelding Problems Handymig 170i Wiring Diagram Code Wiring DiagramsPrecaucion Warnung Copyright 2000 Lincoln Global Inc
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