TABLE III. Troubleshooting System
Probable Cause
Remedy
Symptom
a.
Welding power source OFF
a.
Turn ON.
No welding arc with power ON and gun
b.
Contactor trouble
b.
Check and repair.
trigger depressed
c.
c.
Defective cable
Repair or replace.
d.
Malfunction in Control
d.
Malfunction in gun
e.
See gun manual.
e.
f.
Malfunction in Wire Feeder
f.
See Wire Feeder
manual.
Gas source OFF
a.
Turn ON.
a.
No gas flow with power ON and gun
b.
Repair or replace,
b.
Clogged line
trigger depressed
c.
Malfunction in gun
c.
See gun manual.
d.
Malfunction in Control
d.
Malfunction in Wire Feeder
e.
See Wire Feeder
e.
manual.
a.
Water source OFF
a.
Turn ON.
No water flow with power ON and gun
b.
Clogged line
b.
Repair or replace.
trigger depressed
c.
See gun manual.
c.
Malfunction in gun
d.
Malfunction in Control
d.
e.
Malfunction in Wire Feeder
e.
See Wire Feeder
manual.
a. Malfunction in Control
No wire feed with power ON and gun
b. See Wire Feeder
trigger or jog depressed
b. Malfunction in Wire
manual.
c. Malfunction in gun
c. See gun manual.
able unit. Hence, troubleshooting and repairs by the
4.5 CIRCUIT REPAIRS
user should be limited to replacement of plug-in parts.
The circuits withinthe Control are designed for long-
life and trouble-free operation. The speed control
tors, etc. should be checked and replaced by skilled
section consists of a printed circuit board, a replace-
personnel only. Use Table IV as a guide.
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