Troubleshooting, Caution – Lincoln Electric IM794 SP-170T User Manual

Page 31

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E-4

SP-170T

E-4

TROUBLESHOOTING

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

LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY

for assistance before you proceed.

CAUTION

PROBLEMS
(SYMPTOMS)

Arc is unstable

Poor starting

POSSIBLE
CAUSE

1. Check for correct input voltage

to machine. See Installation sec-
tion,

Electrical Input

Connections

.

2. Check for proper electrode

polarity for process.

3. Check gun tip for wear or dam-

age and proper size

Replace.

4. Check for proper gas and flow

rate for process. (For MIG only.)

5. Check work cable for loose or

faulty connections.

6. Check gun for damage or

breaks.

7. Check for proper drive roll orien-

tation and alignment.

8. Check liner for proper size.

RECOMMENDED
COURSE OF ACTION

Contact your local Lincoln
Authorized Field Service Facility.

WELDING PROBLEMS

Observe Safety Guidelines detailed in the beginning of this manual.

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