Troubleshooting - Fimer T252 Manuel D'emploi

13. TROUBLESHOOTING

Below are a list of some of the most common problems that may arise, with the relative
solutions.
DEFECT
Network error
The machine suddenly sto-
ps working after prolonged
use
Arc off
Porous welding seam
Scarce fusion
Lateral incisions
10
CAUSE
loss of phase or more phases of Check the connection to the
The machine has overheated
due to excessive use and the
thermal protection has inter-
vened.
Poor contact between the earth
clamp and the workpiece.
Short circuit between the con-
tact nozzle and the gas tube.
Incorrect tilt angle of torch.
Damp workpiece
Welding arc is too long
Brusque torch movements
Rusty material
Welding speed is too high
SOLUTION
power supply and check that
the fuses are intact
Leave the machine to cool until
the warning message disap-
pears.
Tighten the clamp and
check again.
Clean and replace contact
nozzle and wire-feeder tip.
The distance between the tor-
ch and the workpiece must be
5-10mm; the tilt angle must be
no less than 60 degrees from
the workpiece.
Dry with a hot air pistol or
other means.
Shorten the arc
Clean
Clean
Reduce welding speed