ESAB HandyPlasma 250, Instruction Manual

Page: 26 / 48

26
SECTION 2 INSTALLATION
Follow all safety instructions included in this manual. DO NOT install or attempt to
operate this torch without following these safety instructions.
BE SURE TO INSTALL THE SWIRL
BAFFLE IN THE TORCH. FAILURE
TO DO SO WOULD ALLOW THE
NOZZLE (TIP) TO CONTACT THE
ELECTRODE. THIS CONTACT
WOULD PERMIT HIGH VOLTAGE
TO BE APPLIED TO THE NOZZLE.
YOUR CONTACT WITH THE NOZ-
ZLE OR WORKPIECE COULD THEN
RESULT IN SERIOUS INJURY OR
DEATH BY ELECTRIC SHOCK.
THE PT-31XL TORCH HEAD CON-
TAINS A GAS FLOW CHECK
VALVE THAT ACTS IN CONJUNC-
TION WITH THE FLOW SWITCH
AND CIRCUITRY WITHIN THE
POWER SOURCE. THIS SYSTEM
PREVENTS THE TORCH FROM
BEING ENERGIZED WITH HIGH
VOLTAGE IF THE TORCH SWITCH
IS ACCIDENTALLY CLOSED WHEN
THE SHIELD IS REMOVED. AL-
WAYS REPLACE TORCH WITH
THE PROPER TORCH MANUFAC-
TURED BY ESAB SINCE IT ALONE
CONTAINS ESAB'S PATENTED
SAFETY INTERLOCK.
The seat comes assembled to the front end of the torch. Make sure seat is tightened
firmly with a wrench but do NOT overtighten.
2.7 PT-31XL TORCH CONSUMABLES INSTALLATION
Figure 2-6 Assembly of Standard Consumable Parts
NOTE: Nozzles
Marked By
Amperage
18205
Electrode
18785
Baffle
Nozzle
15/20A
Heat Shield
20282
19667
1. To disassemble the front end, hold the torch with the shield in an upright position.
This will prevent the nozzle, electrode, and swirl baffle from falling free when the
shield is removed.
The gas flow check valve is part of the safety interlock and is permanently as-
sembled in the torch head. The head must be replaced if this valve malfunctions.
The light spring force used to close the ball check can be felt by pushing on the
electrode when assembling the front end components.
2. Periodically check the heat shield, electrode, nozzle, and swirl baffle. Replace if
worn or damaged.
3. Do not continue to use if the electrode end erodes to a length shorter than 16mm
[5/8 in.] as shown in Fugure 2-6 below.
4. Apply a small amount of lubricant P/N 17672, supplied in spare parts kit, to the heat
shield or to the o-ring as shown in Figure 4-3. Check o-ring for damage whenever
the shield is removed. Replace if necessary.
WARNING
WARNING