E-2

TROUBLESHOOTING

E-2

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

Rough wire feeding or wire not feed-

1.

Gun cable kinked and/or twisted.

ing, but drive rolls are turning.

2.

Wire jammed in gun and cable.

 

3.

Check for current position of drive

 

 

rolls relative to split wire guide

 

 

groove.

 

4.

Drive rolls may not be seated

 

 

properly.

 

5.

Gun cable dirty.

 

6.

Worn drive roll.

 

7.

Worn nozzle or cable liner.

 

8.

Partially flashed or melted contact

 

 

tip.

 

9.

Incorrect drive roll pressure.

 

10. Improper liner, contact tip, or

 

 

inner/outer wire guides.

 

11. Incorrect wire drive or gear ratio

 

 

selection on the control p.c.

 

 

board.

 

 

 

Variable or "hunting" arc.

1.

Wrong size, worn and/or melted

 

 

contact tip.

 

2. Worn work cable or poor work

 

 

connection.

 

3.

Loose electrode or work cable

 

 

connections.

 

4.

Wrong polarity.

 

5.

Gas nozzle extended beyond gun

 

 

tip or wire stickout too long while

 

 

welding.

 

6.

Poor gas shielding on processes

 

 

requiring gas.

 

 

 

Poor arc striking with sticking or

1.

Improper procedures or tech-

"blast-offs", weld porosity, narrow

 

niques.

and ropy looking bead, or electrode

2.

Improper gas shielding.

stubbing into the plate while welding.

 

 

 

 

 

Tip seizes in the diffuser.

1.

Tip overheating because of pro-

 

 

longed or excessive high current

 

 

and/or duty cycle welding.

 

 

 

If all recommended possible areas of misadjustment have been checked and the problem persists,

Contact your local Lincoln Authorized Field Service Facility.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your

STT-10

Page 33
Image 33
Lincoln Electric IM586-B manual Contact your local Lincoln Authorized Field Service Facility