Mechanized Plasmarc Cutting Torch - ESAB Welding & Cutting ...

section 4
operation
WARNING
Oil And Grease Can Burn Violently!
• Never use oil or grease on this torch.
• Handle torch clean hands only on clean surface.
• Use silicone lubricant only where directed.
• Oil and grease are easily ignited and burn violently in the presence
of oxygen under pressure.
WARNING
Hydrogen explosion hazard.
• Do not cut under water with Hydrogen gas!
• Hydrogen explosions can cause personal injury or
death.
• Hydrogen can create explosive gas pockets in the water
table. These pockets will explode when ignited by
sparks or the plasma arc.
• Before cutting, be aware of possible hydrogen sources
in the water table – molten metal reaction, slow
chemical reaction and some plasma gases.
• Explosive gas pockets accumulate underneath the
cutting plate and inside the water table.
• Clean slag (especially fine particles) from bottom of
table frequently. Refill table with clean water.
• Do not leave plate on table overnight.
• If water table has not been used for several hours, vibrate
or jolt it to break up hydrogen pockets before
laying plate on the table.
• If possible, change water level between cuts to break
up hydrogen pockets.
• Maintain water pH level near 7 (neutral).
• Programmed part spacing should be a minimum of
twice the kerf width to ensure material is always under
the kerf.
• When cutting above water, use fans to circulate air
between plate and water surface.
WARNING
Explosion Hazard.
Do Not Cut Underwater With H-35! Dangerous buildup of
hydrogen gas is possible in the water table. Hydrogen gas
is extremely explosive. Reduce the water level to 4 inches
minimum below the workpiece. Vibrate plate, stir air and
water frequently to prevent hydrogen gas buildup.
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