Forney MIG 180FI, Руководство по эксплуатации

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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 SHIELDING
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 no 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 min-
utes ( observe and maintain proper
duty cycle. )
3. Replace transformer.
Low output or nonpenetrating weld 1. Loose connection inside
machine
2. Too long 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
sec-
tion 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 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 damaged
3. Contact tip is clogged or dam-
aged
4. Liner stretched or is too long
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 dam-
aged
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 clamp Tighten connection or replace cable.
Gun nozzle arcs to work surface Slag building inside nozzle or noz-
zle is shorted Clean or replace nozzle as needed.