ATD Tools 3175 Bedienungsanleitung PDF herunterladen (Seite 27)

27

TABLE 5 – TROUBLESHOOTING

TROUBLE

Dirty, porous, brittle weld

Wire feed works but no arc

Arc works but no feeding wire

Nothing works except fan

Low output or nonpenetrating weld

Wire is jamming or “birdnesting” at

the drive roller

Wire burns back to contact tip

Ground clamp and/or ground cable

gets hot

Gun nozzle arcs to work surface

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 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. 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. 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

5. Wire feed speed is too slow

Bad connection from cable to clamp

Slag building inside nozzle or noz-

zle is shorted

POSSIBLE REMEDY

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.

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.

1. Replace gun trigger.

2. Let welder cool at least 10 min-

utes ( 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 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 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.

1. Replace gun liner.

2. Trim liner to proper length.

3. Use correct size contact tip.

4. Replace contact tip.

5. Increase wire feed speed.

Tighten connection or replace cable.

Clean or replace nozzle as needed.

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