Lincoln Electric IM10092 manual TROUbLESHOOTING

Page 33

E-4

TROUbLESHOOTING

E-4

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PRObLEMS

(SYMPTOMS)

POSSIbLE

CAUSE

RECOMMENDED

COURSE OF ACTION

Output Problems

 

7.

Incorrect tension arm pressure on

7.

Adjust the tension arm per the

 

 

the drive rolls.

 

Instruction Manual.

Most elec-

 

 

 

 

trodes feed well at a tension arm

 

 

 

 

setting of "3".

 

 

8.

The spindle brake is too tight.

8.

Verify the spool of wire moves

 

 

 

 

with minimal effort.

 

 

9.

Worn drive roll.

9.

Replace the drive rolls if worn or

 

 

 

 

filled with dirt.

 

 

 

 

 

 

 

 

Wire feed speed consistently oper-

1.

The jumper lead for normal

1.

Properly

connect

the normal

ates at the wrong value. The speed

 

speed/extra torque is connected

 

speed/extra torque jumper.

changes when the wire feed speed

 

improperly.

2.

Install the proper pinion gear in

knob is adjusted.

2.

The wrong gear is installed in the

 

the wire drive.

 

 

 

wire drive.

3.

Replace

the motor/gearbox

 

3. The brushes on the motor are

 

assembly.

 

 

 

 

worn.

 

 

 

 

 

 

 

 

 

The wire feed speed stuck at 200-

1.

The tachometer is connected

1.

Verify all of the tachometer leads

300 in/min and there is no change

 

improperly.

 

are properly connected.

when the wire feed speed knob is

2.

The tachometer has failed.

2.

Replace the motor and tachome-

adjusted.

 

 

 

ter assembly.

 

 

 

 

 

Variable or "hunting" arc.

1.

Wrong size, worn and/or melted

1. Replace the contact tip.

 

 

contact tip.

 

 

 

 

 

2.

Worn work cable or poor work

2.

Verify all work and electrode con-

 

 

connection.

 

nections are tight and that the

 

 

 

 

cables are in good condition.

 

 

 

 

Clean/replace as necessary.

 

3.

Wrong polarity.

3.

Adjust polarity to the recommend-

 

 

 

 

ed procedure.

 

 

4.

The gas nozzle is extended

4.

Adjust the gas nozzle and shorten

 

 

beyond the contact tip or the wire

 

the stickout to 3/8 to 1/2 inches.

 

 

stickout is too long.

 

 

 

 

 

5.

Poor gas shielding on processes

5.

Check gas flow and mixture.

 

 

requiring gas.

 

Remove or block sources of

 

 

 

 

drafts.

 

 

 

 

 

When the trigger is pulled, the wire

The Run-In switch is “ON”

Use the set-up Push-button to turn

feeds slowly.

 

 

Run-in OFF.

 

 

 

 

 

Poor arc starts with sticking or

1. Improper procedures or tech-

1. See "Gas Metal Arc Welding

"blast-offs", weld porosity, narrow

 

niques.

 

Guide" (GS-100).

 

and ropy looking bead.

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

LN-25™ PIPE

Image 33
Contents LN-25PIPE Safety Depends on YouCalifornia Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding and Cutting Sparks can Cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéSafety Methods of Reducing Emissions Mains Supply Vii Please Examine Carton and Equipment For Damage ImmediatelyOn-Line Product Registration TAbLE of Contents Installation Technical Specifications LN-25 Pipe K2614-10Wire SIzES Location Safety PrecautionsHigh Frequency Protection Weld CAbLE SIzEFunction Pin Wiring CAbLE ConnectionsShielding GAS Connection Wire Drive Configuration Procedure to Install Drive Rolls and Wire GuidesChanging the GUN Receiver bUSHING Loading Spools of Wire Pressure ARM AdjustmentGUN Connection Fe, CrNiDescription Power Source to LN-25 PipeLN-25 Pipe CV-305Operation Safety PrecautionsGeneral Description Wire Feed Speed KNOb Case Front Controls See Figure b.1Thermal LED, Motor Overload POWER-UP Sequence Wire Feed SPEED/AMPERAGE DisplaySET-UP Menu Model Run-in Wire Feed Speed Wire Feed Speed UnitsWFS CALIbRATION with Digital Meters RUN-INAmperage CALIbRATION Left Display SelectionDisplay Hold WFS KNOb RangeFigure b.2 Internal ControlsInternal Controls Description Step Trigger Interlock SwitchCold Feed PUSHbUTTON Step TriggerGAS Purge PUSHbUTTON Rear ControlsAccessories Factory Installed EquipmentDrive Roll Kits See Parts Pages Accessories K1500-5 Gun Receiver Bushing compatible Maintenance Routine MaintenancePeriodic Maintenance Electric Shock can kill TROUbLESHOOTINGSymptoms PRObLEMSPOSSIbLE Cause Recommended Course of ActionOutput Problems TROUbLESHOOTING LN-25 Pipe DiagramsDimension Print Precaucion Warnung