Справочник Пользователя для Lincoln Electric SVM138-A

Poor arc striking with sticking or 
"blast offs."  The weld bead may
also be ropey and display weld
porosity.

1.  Make sure the welding parame-

ters and techniques are correct
for the welding procedure being
used.

2.  Check the welding cables for

loose or faulty connections.

3.  The gun cable may be faulty.

Check or replace.

4.  The gun contact tip may be

worn.  Check or replace.

5.  The welding power source may

be faulty.  Check or replace.

1.  Put the power source in

"Machine Control" and check
whether welding performance
improves.  If the problem is
resolved, check or replace the
control cable.  Or, the LN-9
GMA voltage PC board may be
faulty.

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed.  Call
216-383-2531 or 1-800-833-9353.