ESAB PT-35 Manual De Instrucciones, Operación Y Mantenimiento página 25

SECTION 5
WARNING
Before any maintenance
is attempted on this torch,
make sure the POWER
SWITCH on the console is
in the OFF position and the
PRIMARY INPUT POWER is
DEENERGIZED.
5.0 GENERAL
A. Periodically check shield, electrode holder and electrode insulator. Replace if
worn or damaged.
B. Power and pilot arc cables should be inspected periodically. If there are any
cuts through the protective sheath or if gas leaks are noted, replace the damaged
component.
1. Dirt or Contamination
Dirt or other contamination in the torch and loose consumable parts can cause
premature failure of the PT-35 Torch through internal arcing. To avoid this, users are
instructed to do the following:
Ensure that clean, dry, and oil-free air is being used.
Wipe the torch body insulator clean with a cloth before installing each fresh set
of consumables. The ability of the insulator to resist arc tracking over its surface is
reduced when dirt or other contamination is allowed to collect there.
2. Loose Consumables
Tests have shown that with proper use of the torch within rated operating conditions
(especially arc current and gas flow rate), the torch consumable parts do not become
loose if they are firmly installed.
A. Tighten shield fully at each consumable change or inspection.
B. Check consumable tightness at beginning of each work shift, even if everything
was working normally at the end of the previous shift.
Ensure that the electrode seat and electrode holder are clean and free of dust or dirt.
Debris may prevent mating surfaces from having solid contact.
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MAINTENANCE