Craftsman 196.205690 - Manual (Page 24)

TABLE 4 - TROUBLESHOOTING
TROUBLE POSSIBLE CAUSE POSSIBLE REMEDY
Dirty, porous, brittle weld 1. Plugged welding nozzle
2. No shielding gas
3. Wrong type of gas
4. Dirty or rusty welding wire
1, Clean or replace nozzle.
2, Tank empty, flow restricted
or regulator set too low.
3. See SELECTING SHIELD­
ING gas section of manual.
4. Replace spool of wire.
Wire feed works but no arc 1. Bad ground or loose
connection
2. Bad connection to gun or
faulty gun
1. Check ground and
connections. Tighten as
necessary.
2. Check connection to gun or
replace gun
Arc works but not feeding wire 1. Faulty wire speed control
assembly
2. No tension on drive roller
3. Faulty drive motor (RARE!)
1. Replace wire speed control
assembly.
2. Adjust the drive tension.
3. Replace drive motor.
Nothing works except fan 1. Faulty trigger on gun
2. Exceeded duty cycle;
thermal protector opened
3. Faulty transformer (RARE!)
1. Replace gun trigger.
2. Let welder cool at least
10 minutes (observe and
maintain proper duty cycle.)
3. Replace transformer.
Low output or non­
penetrating weld
S ,
1. Loose connection inside
machine
2. Too long or improper
extension cord
3. Wrong type or size wire
4. Poor ground connection
5. Wrong size contact tip
6. Loose gun connection or
faulty gun assembly
7. Wrong welding polarity set
8. Dirty or rusty welding wire
1. Blow inside of machine out
with compressed air. Clean
and tighten all connections.
2. See EXTENSION CORDS
section of manual.
3. Use correct size wire.
4. Reposition clamp and check
cable to clamp connection.
5. Use correct size contact tip.
6. Tighten gun or replace gun.
7. Change to proper polarity.
8. Replace spool of wire.
Wire is jamming or
"birdnesting" at the
drive roller
1. Too much tension on
drive roller
2. Gun liner worn or damaged
3. Contact tip is clogged or
damaged
4. Liner stretched or is too tong
1. Adjust drive tension. (See
INSTALL THE
WELDING WIRE)
2. Replace gun liner.
3. Replace contact tip.
4. Trim liner to proper length.
Wire burns back to contact tip 1. Gun liner worn or damaged
2. Liner stretched or is too long
3. Wrong size contact tip
4. Contact tip is clogged or
damaged
1. Replace gun liner.
2. Trim liner to proper length.
3. Use correct size contact tip.
4. Replace contact tip.
Ground clamp and/or
ground cable gets hot Bad connection from cable
to damp
Tighten connection or
replace cable.
Gun nozzle arcs to work
surface Slag buildup inside nozzle
or nozzle is shorted Clean or replace nozzle
as needed.
94