helvi TP195 Bedienungsanleitung Seite 28

Workpiece clamp and/or
cable gets hot.
Gun nozzle arcs to work
surface.
Wire pushes torch back from
the workpiece
Poor quality welds
Weld deposit "stringy" and
incomplete
Weld deposit too thick
Wrong size contact tip.
BBT time is too long.
Bad connection from cable to
clamp.
Bad connection between clamp
and workpiece.
Slag buildup inside nozzle or nozzle
is shorted.
Wire feed speed too fast.
Voltage too low.
Clogged nozzle.
Torch held too far from the workpiece
Insufficient gas at weld area
Rusty, painted, damp, oil or greasy
workpiece
Rusty or dirty wire
Poor ground contact
Incorrect gas / wire combination
Torch moved over workpiece too
quickly
Gas mixture incorrect
Torch moved over workpiece too
slowly
Welding voltage too low
EN-12
Use correct size contact tip.
Adjust BBT time with the potentiometer
located on the spool compartment (17).
Tighten connection or replace cable.
Clean and/or strip the workpiece on the
point of contact with the clamp.
Clean or replace nozzle.
Decrease wire feed speed or adjust Slope
Up.
Increase the voltage by acting on the
regulation potentiometer (7).
Clean or replace nozzle
Hold the torch at the right distance
Check that the gas is not being blown
away by drafts and if so move to more
sheltered weld area. If not check gas
cylinder contents gauge, regulator setting
and operation of gas valve.
Ensure workpiece is clean and dry.
Ensure wire is clean and dry.
Check ground clamp/workpiece con-
nection
Check on the manual for the correct
combination
Move the torch slower
See shielding gas table
Move the torch faster
Increase welding voltage