Miller Spectrum 300 Manuel Du Propriétaire page 4

ARC RAYS can burn eyes and skin.
Arc rays from the cutting process produce intense
visible and invisible (ultraviolet and infrared) rays
that can burn eyes and skin.
1. Wear face protection (helmet or shield) with correct shade of filter
to protect your face and eyes when cutting or watching. ANSI
Z49.1 (see Safety Standards) suggests a No. 9 shade (with No. 8
as minimum) for all cutting currents less than 300 amperes. Z49.1
adds that lighter filter shades may be used when the arc is hidden
by the workpiece. As this is normally the case with low current
cutting, the shades suggested in Table 1 are provided for the
operator's convenience.
2. Wear approved safety glasses with side shields.
3. Use protective screens or barriers to protect others from flash
and glare; warn others not to watch the arc.
4. Wear protective clothing made from durable, flame-resistant
material (wool and leather) and foot protection.
FUMES
hazardous to your health.
Cutting produces fumes and gases. Breathing these
fumes and gases can be hazardous to your health.
1. Keep your head out of the fumes. Do not breathe the fumes.
2. If inside, ventilate the area and/or use exhaust at the arc to
remove cutting fumes and gases.
3. If ventilation is poor, use an approved air-supplied respirator.
4. Read the Material Safety Data Sheets (MSDSs) and the
manufacturer's instruction for metals to be cut, coatings, and
cleaners.
PLASMA ARC can cause injury.
The heat from the plasma arc can cause serious
burns. The force of the arc adds greatly to the burn
hazard. The intensely hot and powerful arc can
quickly cut through gloves and tissue.
1. Keep away from the torch tip.
2. Do not grip material near the cutting path.
CYLINDERS can explode if damaged.
Gas cylinders contain gas under high pressure. If
damaged, a cylinder can explode. Since gas
cylinders are normally part of metalworking
processes, be sure to treat them carefully.
1. Protect compressed gas cylinders from excessive heat,
mechanical shocks, slag, open flame, sparks, and arcs.
2. Install and secure cylinders in an upright position by chaining
them to a stationary support or equipment cylinder rack to
prevent falling or tipping.
3. Keep cylinders away from any cutting or other electrical circuits.
1-3. Additional Installation, Operation, And Maintenance Hazards
HOT PARTS can cause severe burns.
1. Do not touch hot parts bare handed.
2. Allow cooling period before working on torch.
FLYING PIECES OF METAL or DIRT can
injure eyes.
1. Wear safety glasses with side shields or face
shield.
OM-2210 Page 2
AND GASES can
NOISE can damage hearing.
Prolonged noise from some cutting applications can
damage hearing if levels exceed limits specified by
OSHA (see Safety Standards).
5. Use approved ear plugs or ear muffs if noise level is high.
6. Warn others nearby about noise hazard.
Table 1. Eye Protection For Plasma Arc Cutting
Current Level In Amperes
Below 20
20 − 40
40 − 60
60 − 80
be
5. Work in a confined space only if it is well ventilated, or while
wearing an air-supplied respirator. Fumes from cutting and
oxygen depletion can alter air quality causing injury or death. Be
sure the breathing air is safe.
6. Do not cut in locations near degreasing, cleaning, or spraying
operations. The heat and rays of the arc can react with vapors to
form highly toxic and irritating gases.
7. Do not cut on coated metals, such as galvanized, lead, or
cadmium plated steel, unless the coating is removed from the
cutting area, the area is well ventilated, and if necessary, while
wearing an air-supplied respirator. The coatings and any metals
containing these elements can give off toxic fumes when cut.
8. Do not cut containers with toxic or reactive materials inside or
containers that have held toxic or reactive materials − they must
be emptied and properly cleaned first.
3. The pilot arc can cause burns − keep away from torch tip when
trigger is pressed.
4. Wear proper flame-retardant clothing covering all exposed body
areas.
5. Point torch away from your body and toward work when pressing
the torch trigger − pilot arc comes on immediately.
6. Turn off power source and disconnect input power before
disassembling torch or changing torch parts.
7. Use only torch(es) specified in the Owner's Manual.
4. Never allow electrical contact between a plasma arc torch and a
cylinder.
5. Never cut on a pressurized cylinder − explosion will result.
6. Use only correct gas cylinders, regulators, hoses, and fittings
designed for the specific application; maintain them and
associated parts in good condition.
7. Turn face away from valve outlet when opening cylinder valve.
8. Keep protective cap in place over valve except when cylinder is in
use or connected for use.
9. Read and follow instructions on compressed gas cylinders,
associated equipment, and CGA publication P-1 listed in Safety
Standards.
FALLING
serious personal injury and equipment
damage.
1. Use lifting eye to lift unit only, NOT running gear,
gas cylinders, or any other accessories.
2. Use equipment of adequate capacity to lift unit.
3. If using lift forks to move unit, be sure forks are long
enough to extend beyond opposite side of unit.
Minimum Shade Number
#4
#5
#6
#8
EQUIPMENT can cause