Miller ICE-100M Manuale d'uso - Pagina 5

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SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING

1-1. Symbol Usage

Means Warning! Watch Out! There are possible hazards

with this procedure! The possible hazards are shown in

the adjoining symbols.

Y Marks a special safety message.

Means "Note"; not safety related.

1-2. Plasma Arc Cutting Hazards

Y The symbols shown below are used throughout this manual to

call attention to and identify possible hazards. When you see

the symbol, watch out, and follow the related instructions to

avoid the hazard. The safety information given below is only

a summary of the more complete safety information found in

the Safety Standards listed in Section 1-4. Read and follow all

Safety Standards.

Y Only qualified persons should install, operate, maintain, and

repair this unit.

Y During operation, keep everybody, especially children, away.

CUTTING can cause fire or explosion.

Hot metal and sparks blow out from the cutting arc.

The flying sparks and hot metal, hot workpiece, and

hot equipment can cause fires and burns. Check

and be sure the area is safe before doing any cutting.

Protect yourself and others from flying sparks and hot metal.

Do not cut where flying sparks can strike flammable material.

Remove all flammables within 35 ft (10.7 m) of the cutting arc. If this

is not possible, tightly cover them with approved covers.

Be alert that sparks and hot materials from cutting can easily go

through small cracks and openings to adjacent areas.

Watch for fire, and keep a fire extinguisher nearby.

Be aware that cutting on a ceiling, floor, bulkhead, or partition can

cause fire on the hidden side.

Do not cut on closed containers such as tanks or drums.

Connect work cable to the work as close to the cutting area as prac-

tical to prevent cutting current from traveling long, possibly

unknown paths and causing electric shock and fire hazards.

Never cut containers with potentially flammable materials inside –

they must be emptied and properly cleaned first.

Do not cut in atmospheres containing explosive dust or vapors.

Do not cut pressurized cylinders, pipes, or vessels.

Do not cut containers that have held combustibles.

Wear oil-free protective garments such as leather gloves, heavy

shirt, cuffless trousers, high shoes, and a cap.

Do not locate unit on or over combustible surfaces.

Remove any combustibles, such as a butane lighter or matches,

from your person before doing any cutting.

ELECTRIC SHOCK can kill.

Touching live electrical parts can cause fatal shocks

or severe burns. The torch and work circuit are

electrically live whenever the output is on. The input

power circuit and machine internal circuits are also

live when power is on. Plasma arc cutting requires

higher voltages than welding to start and maintain the arc (200 to 400

volts dc are common), but also uses torches designed with safety

interlock systems which turn off the machine when the shield cup is

loosened or if tip touches electrode inside the nozzle. Incorrectly

installed or improperly grounded equipment is a hazard.

This group of symbols means Warning! Watch Out! possible

ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards.

Consult symbols and related instructions below for necessary actions

to avoid the hazards.

Do not touch live electrical parts.

Wear dry, hole-free insulating gloves and body protection.

Insulate yourself from work and ground using dry insulating mats or

covers big enough to prevent any physical contact with the work or

ground.

Do not touch torch parts if in contact with the work or ground.

Turn off power before checking, cleaning, or changing torch parts.

Disconnect input power before installing or servicing this equip-

ment. Lockout/tagout input power according to OSHA CFR

1910.147 (see Safety Standards).

Properly install and ground this equipment according to its Owner's

Manual and national, state, and local codes.

Check and be sure that input power cord ground wire is properly

connected to ground terminal in disconnect box or that cord plug is

connected to a properly grounded receptacle outlet – always verify

the supply ground.

When making input connections, attach proper grounding conduc-

tor first.

Frequently inspect input power cord for damage or bare wiring – re-

place cord immediately if damaged – bare wiring can kill.

Turn off all equipment when not in use.

Inspect and replace any worn or damaged torch cable leads.

Do not wrap torch cable around your body.

Ground the workpiece to a good electrical (earth) ground if required

by codes.

Use only well-maintained equipment. Repair or replace damaged

parts at once.

Wear a safety harness if working above floor level.

Keep all panels and covers securely in place.

Do not bypass or try to defeat the safety interlock systems.

Use only torch(es) specified in Owner's Manual.

Keep away from torch tip and pilot arc when trigger is pressed.

Clamp work cable with good metal-to-metal contact to workpiece

(not piece that will fall away) or worktable as near the cut as

practical.

Insulate work clamp when not connected to workpiece to prevent

contact with any metal object.

ELECTRIC SHOCK can kill.

SIGNIFICANT DC VOLTAGE exists on

internal parts of inverter power

sources AFTER the removal of input

power.

D Turn Off unit, disconnect input power, check voltage on input ca-

pacitors, and be sure it is near zero (0) volts before touching any

parts. Check capacitors according to instructions in Mainte-

nance Section of Owner's Manual or Technical Manual before

touching any parts.

pom _nd_9/98

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