Tweco Lightweight Quick Robotic Torch - Manual (Page 15)

Quick ROBOtics light weight tORch
6-11
SM-QRLTORCH TROUBLESHOOTING
SECTION 6:
TROUBLESHOOTING
Problem Possible Cause Corrective Action
Wire feed inconsistent or not
smooth. 1. Loose drive Rollers on feeder.
2. Dirty or plugged conduit.
3. Conduit pulled back from diffuser.
4. Sharp bends or kinks in conduit.
5. Machine improperly adjusted.
6. Spatter buildup on end of contact tip.
7. Loose contact tip or diffuser.
8. Excessively worn contact tip.
9. Loose ground cable or ground clamp.
1. Tighten drive rollers.
2. Replace conduit.
3. Reposition conduit and tighten front
screw.
4. Remove and replace conduit.
5. Reset machine per machine and wire
manufacturers’ recommendations.
6. Clean or replace contact tip.
7. Tighten contact tip and diffuser plier
tight.
8. Replace contact tip.
9. Tighten or replace as required.
Torch and cable assembly is
running hot. 1. Loose power connection.
2. Loose or undersize ground cable or
ground clamp.
3. Conductor tube not tight in torch block.
4. Loose contact tip or diffuser.
5. Operating torch and cable assembly
above recommended amperage rating.
6. Power cable assembly damaged.
7. Restricted water flow (only QRW and
QRWA series torch).
1. Inspect complete torch and cable for
loose connections and tighten.
2. Tighten or replace as required.
3. Tighten stainless setscrew in torch
block.
4. Tighten contact tip and diffuser.
5. Readjust machine to correct setting for
size of torch being used.
6. Inspect and replace accordingly.
7. Inspect water lines for any excessive
bends.
Robot will not start. 1. Deflection mount not at “home”
position.
2. Check E-stop cable connection.
1. Check to ensure the mount arm and
mount location.
2. Check E-stop cable connection.
Porous weld. 1. Poor or improper gas flow.
2. Moisture from torch/conductor tube.
3. Dirty or contaminated wire.
4. Base metal contamination.
1. Check gas flow out of conductor tube
nozzle. Check for leaks or restrictions
in gas hoses and connections.
2. Check O-rings on conductor tube and
torch block. Check the torch block for
any scarring, gouges to the surface.
3. Change wire.
4. Replace base metal.