Suggestions For Extra Utility From The Tomahawk ® 1000 System - Lincoln Electric Tomahawk 1000 Operator's Manual

TOMAHAWK ® 1000
SUGGESTIONS FOR ExTRA UTILITY FROm THE
TOmAHAwk 1000 SYSTEm:
®
WARNING
ELECTRIC SHOCK CAN KILL.
• Turn off machine at the disconnect switch
on the rear of the machine before
tightening, cleaning or replacing
consumables.
1. Occasionally an oxide layer may form over the tip of the
electrode, creating an insulating barrier between the
electrode and nozzle. This will result in false starts. When this
happens turn the power off, remove the shield cup and
nozzle. Rub the inside surface of the nozzle, this will help
remove any oxide buildup. Also, clean any oxide build up from
the electrode. Replace the shield cup and nozzle, turn on the
power and continue cutting. If false starts continue to occur
after cleaning the consumables, then replace them with a
new set. Do not continue to try and cut with excessively worn
consumables as this can cause damage to the torch head and
will degrade cut quality. Do not allow torch cable or body to
contact hot surfaces.
2. To improve consumable life, here are some suggestions that
may be useful:
• Make sure the air supply to the Tomahawk
and free of oil. Use several extra in line filters if necessary.
• Minimize dross buildup on the nozzle tip by starting the cut
from the edge of the plate when possible.
• Pierce cutting should be done only when necessary. If
piercing, angle torch about 30° from the plane perpen-
dicular to the work piece, transfer the arc, then bring the
torch perpendicular to the work and begin parallel
movement.
• Reduce the number of pilot arc starts without transferring
to the work.
• Reduce the pilot arc time before transferring to the work.
• Set air pressure to recommended setting. A higher or lower
pressure will cause turbulence in the plasma arc, eroding
the orifice of the nozzle tip.
• Use only Lincoln consumable parts. These parts are
patented and using any other replacement consumables
may cause damage to the torch or reduce cut quality.
® 1000 is clean
B-8
OPERATION