Miller Axcess 450 Manual del usuario - Página 30

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SECTION 7 − SAFETY PRECAUTIONS FOR SERVICING

Y Warning: Protect yourself and others from injury — read and follow these precautions.

7-1. 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.

7-2. Servicing 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.

Y Only qualified persons should service, test, maintain, and re-

pair this unit.

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

ELECTRIC SHOCK can kill.

D Do not touch live electrical parts.

D Turn Off welding power source and wire feeder

and disconnect and lockout input power using

line disconnect switch, circuit breakers, or by removing plug from re-

ceptacle, or stop engine before servicing unless the procedure spe-

cifically requires an energized unit.

Insulate yourself from ground by standing or working on dry insulat-

ing mats big enough to prevent contact with the ground.

Do not leave live unit unattended.

If this procedure requires an energized unit, have only personnel

familiar with and following standard safety practices do the job.

When testing a live unit, use the one-hand method. Do not put both

hands inside unit. Keep one hand free.

Disconnect input power conductors from deenergized supply line

BEFORE moving a welding power source.

SIGNIFICANT DC VOLTAGE exists after removal of

input power on inverters.

Turn Off inverter, disconnect input power, and discharge input

capacitors according to instructions in Troubleshooting Section be-

fore touching any parts.

STATIC (ESD) can damage PC boards.

D Put on grounded wrist strap BEFORE handling

boards or parts.

D Use proper static-proof bags and boxes to

store, move, or ship PC boards.

FIRE OR EXPLOSION hazard.

D Do not place unit on, over, or near combustible

surfaces.

D Do not service unit near flammables.

OM-211 434 Page 26

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.

FLYING METAL or DIRT can injure eyes.

D Wear safety glasses with side shields or face

shield during servicing.

D Be careful not to short metal tools, parts, or

wires together during testing and servicing.

HOT PARTS can cause severe burns.

D Do not touch hot parts bare handed.

D Allow cooling period before working on

equipment.

D To handle hot parts, use proper tools and/or

wear heavy, insulated welding gloves and

clothing to prevent burns.

EXPLODING PARTS can cause injury.

D Failed parts can explode or cause other parts to

explode when power is applied to inverters.

D Always wear a face shield and long sleeves

when servicing inverters.

SHOCK HAZARD from testing.

D Turn Off welding power source and wire feeder

or stop engine before making or changing me-

ter lead connections.

D Use at least one meter lead that has a self-

retaining spring clip such as an alligator clip.

D Read instructions for test equipment.

FALLING UNIT can cause injury.

D Use lifting eye to lift unit only, NOT running

gear, gas cylinders, or any other accessories.

D Use equipment of adequate capacity to lift and

support unit.

D If using lift forks to move unit, be sure forks are

long enough to extend beyond opposite side of

unit.

OM-211 434M - 2006−05, safety_stm 3/06