Craftsman 196.205690 Manual Del Usuario página 24

TROUBLE
Dirty, porous, brittle weld
Wire feed works but no arc
Arc works but not feeding wire
i Nothing works except fan
Low output or non-
_enetrating weld
Wire is jamming or
"birdnesting" at the
drive roller
POSSIBLE CAUSE
1. Plugged welding nozzle
2. No shielding gas
3. Wrong type of gas
4. Dirty or rusty welding wire
1. Bad ground or loose
connection
2. Bad connection to gun or
faulty gun
1. Faulty wire speed control
assembly
2. No tension on drive roller
3. Faulty drive motor (RARE!)
1. Faulty trigger on gun
2. Exceeded duty cycle;
thermal protector opened
3. Faulty transformer (RARE!)
1. Loose connection inside
machine
2. Too tong 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. Too much tension on
drive roller
POSSIBLE REMEDY
2. Gun liner worn or damaged
3. Contact tip is clogged or
damaged
4. Liner stretched or is too tonc
1• Gun liner worn or damaged
2. Liner stretched or is too lone
3• Wrong size contact tip
4• Contact tip is clogged or
damaged
Bad connection from cable
to clamp
Slag buildup inside nozzle
or nozzle is shorted
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.
1. Check ground and
connections• Tighten as
necessary.
2. Check connection to gun or
replace gun
1. Replace wire speed control
assembly.
2, Adjust the drive tension.
3. Replace drive motor.
• Replace gun trigger.
2• Let welder cool at least
10 minutes (observe and
maintain proper duty cycle.)
3. Replace transformer.
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. "13ghtengun or replace gun.
7. Change to proper polarity.
8. Replace spool of wire•
: 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. Replace gun liner•
2. Trim liner to proper length•
3. Use correct size contact tip.
4. Replace contact tip.
Ground clamp and/or Tighten connection or
ground cable gets hot replace cable•
Gun nozzle arcs to work Clean or replace nozzle
surface as needed.
94