Troubleshooting, Caution – Lincoln Electric IM869-D User Manual

Page 27

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E-4

TROUBLESHOOTING

E-4

SAE-400

Observe all Safety Guidelines detailed throughout this manual

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.

CAUTION

FUNCTION PROBLEMS

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

Welding current too great or too
small compared to indication on the
dial.

Welder has output and no control

1. “Current Control” shaft and han-

dle may have turned slightly in
the insulated bushing of the cur-
rent control brushholder, caused
by turning handle too hard against
one of the stops.

2. Exciter output low causing low

output compared to dial indica-
tion.

3. “Current Control” set to minimum

and welder output so great that
engine stalls when arc is struck.

1. Local/Remote switch is in wrong

position.

1. With current control against the

minimum stop, set pointer to with-
in 1/8” of the last scale division.

2. Check for shorts in exciter arma-

ture with growler.

3. Check to see that series field is

properly connected and not short-
ed.

1. Place switch in “LOCAL” position

to control output at the welder.
Place switch in “REMOTE” posi-
tion to control output remotely.

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