Hypertherm
Plasma Systems
1-3
8-06
SAFETY
Touching live electrical parts can cause a fatal
shock or severe burn.
• Operating the plasma system completes an
electrical circuit between the torch and the
workpiece. The workpiece and anything touching
the workpiece are part of the electrical circuit.
• Never touch the torch body, workpiece or the
water in a water table when the plasma system is
operating.
Electric Shock Prevention
All Hypertherm plasma systems use high
voltage in the cutting process (200 to 400 VDC
are common). Take the following precautions
when operating this system:
• Wear insulated gloves and boots, and keep your
body and clothing dry.
• Do not stand, sit or lie on – or touch – any wet
surface when using the plasma system.
• Insulate yourself from work and ground using dry
insulating mats or covers big enough to prevent
any physical contact with the work or ground. If
you must work in or near a damp area, use
extreme caution.
• Provide a disconnect switch close to the power
supply with properly sized fuses. This switch
allows the operator to turn off the power supply
quickly in an emergency situation.
• When using a water table, be sure that it is
correctly connected to earth ground.
ELECTRIC SHOCK CAN KILL
• Install and ground this equipment according to
the instruction manual and in accordance with
national and local codes.
• Inspect the input power cord frequently for
damage or cracking of the cover. Replace a
damaged power cord immediately. Bare wiring
can kill.
• Inspect and replace any worn or damaged torch
leads.
• Do not pick up the workpiece, including the
waste cutoff, while you cut. Leave the workpiece
in place or on the workbench with the work cable
attached during the cutting process.
• Before checking, cleaning or changing torch
parts, disconnect the main power or unplug the
power supply.
• Never bypass or shortcut the safety interlocks.
• Before removing any power supply or system
enclosure cover, disconnect electrical input
power. Wait 5 minutes after disconnecting the
main power to allow capacitors to discharge.
• Never operate the plasma system unless the
power supply covers are in place. Exposed
power supply connections present a severe
electrical hazard.
• When making input connections, attach proper
grounding conductor first.
• Each Hypertherm plasma system is designed to
be used only with specific Hypertherm torches.
Do not substitute other torches which could
overheat and present a safety hazard.
Use proper precautions when handling printed
circuit boards.
STATIC ELECTRICITY CAN DAMAGE CIRCUIT BOARDS
• Store PC boards in anti-static containers.
• Wear a grounded wrist strap when handling
PC boards.
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