ESAB PT-35 Manuel D'instruction page 94

SECTION 5
WARNING
Make sure that the power
source has been turned off
and that the power cable
has been unplugged at the
wall receptacle before pro-
ceeding.
CAUTION
The torch requires good
electrical contact between
the electrode seat and elec-
trode holder. If good contact
is not maintained, then the
resulting potential differ-
ence causes internal arcing
and possible torch dam-
age.
3. Damage Caused by Loose Parts and Torch Overheating.
Arc tracking indicates loose parts. Make sure heat shield is tightened fully, at least
5mm (0.20") of rotation after electrode seat contacts electrode holder. Check tight-
ness again after a few minutes of use. Parts damaged by arcing will cause destruc-
tion of torch and must be replaced.
4. Consumables- Remove and Replace
a. Bring torch to a position where it is easily accessed by machine operator, in its
normal vertical position and at least 152.4mm (6.00") above the workpiece or the
edge of the water table.
b. Unscrew the heat shield and lower it away from the torch, allowing nozzle to
remain with shield.
ELECTRODE
c. Remove the nozzle and inspect for wear. The nozzle orifice should be round at
both the entrance and the exit. If the nozzle orifice is worn in an oval shape or shows
other signs of damage at either end, it should be replaced. The inside of the nozzle
may have light gray deposits from the electrode. These may be removed with steel
wool but care must be taken to remove all traces of the steel wool afterward.
SHIELD
94
MAINTENANCE
TORCH BODY
INSULATOR
NOZZLE