Lincoln Electric K2704-2 Cougar Push Pull Gun Troubleshooting Guide, Problem Symptoms Remedy

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COUGAR™ Push Pull Gun

Troubleshooting Guide

PROBLEM

 

SYMPTOMS

 

REMEDY

 

 

 

 

No arc, wire feed, or gas flow.

1. Cable connections loose.

1.

Check all power connections.

 

2.

Trigger switch loose or defective.

2.

Fix switch or replace.

 

3.

Welder not turned on.

3. Turn on welder power.

 

4.

Welder not plugged in.

4.

Plug in.

 

5.

Cable or adapter cable damaged.

5.

Inspect and replace

No arc, weak arc.

1. Poor ground connection to work.

1.

Check ground connection.

 

2.

Power cable connection loose.

2.

Check connections; if defective,

 

3.

Voltage set too low.

3.

replace cable or connectors.

 

Adjust to proper voltage

 

4.

Tip too large for wire size.

4.

Change tip size.

 

5.

Wire feed speed too slow.

5.

Increase wire feed speed.

No wire feed.

1. Feeding small diameter wire with large

1.

Change position of wire drive roller.

 

2.

groove on drive roller.

2.

Close wire drive release.

 

Wire drive release open.

 

3.

Wire welded to tip.

3.

Peel wire off tip or use new tip.

 

4.

Wire push-pull empty in machine.

4.

Insert new push-pull.

 

5.

Tip too small for wire.

5.

Insert correct tip.

 

6.

Kink or bend in wire.

6.

Pull wire through tip or start new

 

7.

Control cable loose.

7.

wire end.

 

Check all connections.

 

8.

Drive roller worn.

8.

Replace.

 

9.

Pressure roller stuck.

9.

Replace or lubricate.

 

10. Roller spring loose or broken.

10. Replace.

Wire feed too fast or too slow.

1. Wrong wire speed set for work.

1.

Adjust wire feed speed.

 

 

 

 

Low or no gas flow. Oxidation of work.

1. Gas flow not set right.

1.

Set proper flow rate.

 

2.

Cylinder out of gas.

2.

Get new cylinder of gas.

 

3.

Cylinder valve closed.

3.

Open cylinder valve.

 

4.

Leak in gas line.

4.

Inspect and replace.

 

5.

Leak in gun.

5.

Check for missing gun tubes and/or

 

6.Gas diffuser clogged

6.

missing gun body cover.

 

Blow out gas diffuser openings.

Oxidized work, arc unstable.

1. Wrong welding polarity.

1.

Check polarity.

 

 

 

 

 

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Contents Cougartm Safety depends on youMay be dangerous Powered equipmentFor Engine Electric Magnetic FieldsElectric Shock can kill ARC Rays can burn Fumes and GasesCan be dangerous Cause fire or explosion For ElectricallyIii Transformateur ET À Précautions DE Sûreté SafetyPrécautions DE Sûreté Pour LES Machines À Souder ÀThank You Table of Contents Model Cougar Push-Pull Gun with Remote Wire Speed Control Cougar Push Pull Gun General InformationSupplied with Cougar Push Pull Gun Installation Safety PrecautionsUnpacking the Push-Pull Gun Push-pull Gun Familiarization Connecting to Power SourceCougar Push Pull Gun Operating Instructions Setup ProcedureDrive Roll Groove Selection Making a Weld Procedure SettingsSetting Gas Flow Rate COUGARPush Pull Gun Operating InstructionsCougar Push Pull Gun ACCESSORIES/MAINTENANCE MaintenanceAccessories consult Lincoln Sales Bulletin E12.16 Problem Symptoms Remedy Cougar Push Pull Gun Troubleshooting GuideMotor Check Testing the TorchTesting the Potentiometer Testing the Trigger SwitchPart Description Cougar Push Pull GunS26374-14 Cougar LX Push Pull GunPrecaucion Aviso DE Page LNC.0016