Operation; General Description; Preheat Temperature For Plasma Cutting; Duty Cycle - Lincoln Electric Tomahawk 1000 Operator's Manual

TOMAHAWK ® 1000

OPERATION

SAFETY PRECAUTIONS
Read and understand this entire section before
operating your Tomahawk 1000
WARNING
• Do not attempt to use this equipment until you have
thoroughly read the engine manufacturer's manual
supplied with your welder. It includes important safety
precautions, detailed engine starting, operating and
maintenance instructions, and parts lists.
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and ground
• Always wear dry insulating gloves.
can be dangerous.
FUMES AND GASES
• Keep your head out of fumes.
• Use ventilation or exhaust to remove fumes
from breathing zone.
WELDING, CUTTING and GOUGING
SPARKS can cause fire or explosion
• Keep flammable material away.
• Do not weld, cut or gouge on containers
that have held combustibles.
ARC RAYS can burn.
• Wear eye, ear and body protection.
PLASMA ARC can injure
• Keep your body away from nozzle and
plasma arc.
• Operate the pilot arc with caution. The pilot
arc is capable of burning the operator, others or even
piercing safety clothing.
• Only qualified personnel should operate this equipment.
• Always operate the welder with the door closed and the
side panels in place as these provide maximum
protection from moving parts and insure proper cooling
air flow.

GENERAL dESCRIPTION

The Tomahawk ® 1000 is a constant current, continuous control
plasma cutting power source. It provides superior and reliable
starting characteristics, cutting visibility and arc stability. The
control system has a safety mechanism to insure that the nozzle
and electrode are in place before cutting or gouging. This is
extremely important due to the high voltages involved.
The Tomahawk ® 1000 comes standard with an air regulator and
pressure gauge. The machine also comes with an input power
cord and Hand-held torch with a 25 Ft.(7.6m) cable length.
Consumables are included with each Tomahawk
so that cutting can begin right out of the box. Consumables can
also be ordered as individual packages.
The Tomahawk ® 1000 initiates the plasma arc with a simple, yet
reliable, touch start mechanism. This system eliminates many of
the failure problems associated with hi-frequency start systems.

PREHEAT TEmPERATURE FOR PLASmA CUTTING

Preheat temperature control is not necessary in most applications
when plasma arc cutting or gouging. Preheat temperature control
may be necessary on high carbon alloy steels and heat treated
aluminum for crack resistance and hardness control. Job
conditions, prevailing codes, alloy level, and other considerations
may also require preheat temperature control. The following
minimum preheat temperature is recommended as a starting
point. Higher temperatures may be used as required by the job
conditions and/or prevailing codes. If cracking or excessive
hardness occurs on the cut face, higher preheat temperature may
be required. The recommended minimum preheat temperature for
plate thickness up to 1/2" (12.7mm) is 70°F (21.1°C).

dUTY CYCLE

The duty cycle of a plasma machine is the percentage of time in a
10 minute cycle at which the operator can operate the machine at
rated cutting current.
Example: 60% duty cycle means that is possible cut for 6
minutes, then the machine stops for 4 minutes.
Refer to the Technical Specification section for more information
about the machine rated duty cycles.
B-1
OPERATION
® 1000 purchase