ESAB PT-38 Manuel D'instruction page 103

SECTION 5
CAUTION
3. If the electrode has a pit which is more than .06" (1.5mm) deep at its center, it must be replaced. This
is done by unscrewing the electrode in a counter-clockwise direction from the piston. If the electrode
is used beyond this recommended wear limit, damage to the torch and power source may occur.
Nozzle life is also greatly reduced when using the electrode below the recommended limit.
NEW
4. Remove the gas baffle. Inspect it and the piston
for signs of damage such as arc tracking or crack-
ing and replace them if necessary.
Gas baffle and retaining/shield cup need to be
replaced only if cracked or significant signs of
wear are noticeable. Monthly replacement is
generally a good practice.
5. After installing the gas baffle onto the torch body
assembly, install electrode by screwing clockwise
into place.
6. Lastly, replace the nozzle and retaining/shield cup
by screwing clockwise into place.
Firm tightening of the electrode by hand is suf-
ficient, the use of tools such as wrenches or pli-
ers is not required or
recommended.
REPLACE ELECTRODE BEFORE WEAR BECOMES DEEPER THAN .060"
INCH (1.5 MM)
WORN
Note:
Note:
Torch Body
Assembly
Electrode/Torch
Body Seat
Piston
Gas Baffle (90A)
Electrode
Retaining/Shield Cup
Nozzle
103
MAINTENANCE
Gas
Baffle
(30-70A)