SECTION 5 TROUBLESHOOTING
18
WELD CONDITION
POSSIBLE CAUSE
REMEDY
10.Shield gas flow low or
a. Cylinder valve closed.
a. Turn off regulator. Slowly open
stopped
cylinder valve, until regulator gauge
indicates pressure.
b. Cylinder empty.
b. Replace cylinder if gauge so indicates.
c. Faulty regulator or adaptor.
c. Check flow at outlet; replace
faulty item.
d. Faulty gas solenoid valve.
d. Replace solenoid valve.
11.Wire stubs on work
a. Controls not set properly for
a. Reset controls properly.
while welding.
metal gauge, thickness.
12.Wire burns back into
a. Contact tip loose.
a. Firmly tighten with pliers.
contact tip.
b. Tip too close to work.
b. Maintain 1/4" (.6 cm) wire
protrusion; hold Torch further
from work.
c. Wire feed slipping.
c. Increase pressure on pressure
roll by adjusting pressure knob.
d. Contact tip damaged.
d. Trim back tip 1/16" (1.6 cm) max.
Replace if still faulty.
e. Voltage setting too high.
e. Adjust setting.
f. Drive or pressure roll dirty or worn.
f. Clean rolls or replace.
13.Wire does not feed; motor
a. Kink, etc. in wire, or wire bound
a. Straighten; or feed wire until
running (drive roll turns).
on reel.
clear and cut off.
b. Wire freezing to contact tip
b. Free freeze, or remove contact
(burnback).
tip feed wire until clear cut end free,
and replace tip.
c. Clogged liner.
c. Replace liner.
14.Wire does not feed;
a. Motor
a. With wire speed dial on 700,
motor NOT running
press trigger. If voltage
(drive roll does not turn).
appears across motor leads
but motor does not run, check
motor gears and commutator
areas.
b.Power switch SW1 and fuses.
b. With SW1 ON, if voltage
across terminal 1 and 3 is 24 VAC,
switch and fuses are good.
c. Speed Potentiometer.
c. Check for 10K ohms across
POT outside terminals.
d. Malfunctioning main control board.
d. Replace main control board.
15.Wire feed does not stop.
a. Torch trigger switch.
a. Check continuity of Torch trigger
circuit; check to see if trigger lever
is stuck in ON position.
b. Main PCB.
b. Check for proper operation.
16.Gas continues to flow
a. Gas solenoid valve stuck open.
a. Tap solenoid or click on and off
after trigger release.
to clear valve.
TABLE 5.1 TROUBLESHOOTING GUIDE (cont.)
