Lincoln Electric IM850-A manual Output Problems

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TROUBLESHOOTING

E-2

Observe all Safety Guidelines detailed throughout this manual

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

OUTPUT PROBLEMS

Drive rolls turn, but wire will not

1.

Wire jammed or kinked on route

feed or wire feeding is rough or

through wire drive. Remove wire

uneven.

from wire drive, then feed in new

wire. Note any obstruction.

2.

Incorrect drives rolls and/or

guide tubes, or incorrect pres-

sure setting. Ensure drive rolls

and/or guide tubes are stamped

with wire diameter being used.

Replace if necessary. Check for

proper pressure setting.

3.

Worn drive rolls. Replace, or

reverse if split type.

4.

Partially flashed or melted con-

If all recommended possible areas

tact tip. Replace contact tip.

of misadjustments have been

checked and the problem persists,

Variable or "hunting" arc.

1.

Contact tip worn or incorrect

contact your local Lincoln

Authorized Field Service Facility.

size. Replace contact tip.

2.

Worn or undersized work cables

or poor connections to work.

Inspect and repair, or replace as

necessary.

3.

Loose electrode connections.

The following connections must

be tight: electrode cable to wire

drive and power source, work

cable to power source and work,

contact tip to nozzle.

4.

Rusty electrode. Replace elec-

trode.