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Section 1
ARC RAYS CAN BURN EYES AND SKIN -
The arc, like the sun, emits ultraviolet and infrared (visible and
in-visible) and other radiation and can injure skin and eyes.
Sparks and hot metal can fly off the weld. Training in the proper
use of the processes and equipment is essential to prevent ac-
cidents. Therefore:
1)
Always wear safety glasses with side shields in any work area, even if wearing a
welding helmet, face shields and goggles are also required.
2)
Always use a face shield fitted with the correct shade of filter to protect your
face and eyes when welding or watching (See ANSI Z49.1 and Z87.1 listed
in Safety Standards). Cover sparks and rays of the arc when operating or
observing operations.
3)
Use protective non-flammable screens or barriers to protect others from
flash and glare. Warn bystanders not to watch the arc and not to expose
themselves to the rays of the electric-arc or hot metal.
3)
Wear flameproof gauntlet type gloves, heavy long-sleeve shirt, cuffless trou-
sers, high topped shoes, and a welding helmet or cap for hair protection, to
protect against arc rays and hot sparks or hot metal. A flameproof apron may
also be desirable as protection against radiated heat and sparks.
4)
Hot sparks or metal can lodge in rolled up sleeves, trousers cuffs or pockets.
Sleeves and collars should be kept buttoned, and open pockets eliminated
from the front of clothing.
6)
Use goggles over safety glasses when chipping slag or grinding. Chipped slag
may be hot and can fly far. Bystanders should also wear goggles over safety
glasses.
EL E C T R I C A N D M AG N E T IC F I E LD S -
Electric and Magnetic Fields may be dangerous. Electric current
flowing through any conductor causes localized Electric and
Magnetic Fields (EMF). Welding and cutting current creates EMF
around welding cables and welding machines.
Therefore:
1)
Welders having pacemakers should consult their physician before welding.
EMF may interfere with some pacemakers.
2)
Exposure to EMF may have other health effects which are unknown.
3)
Welders should use the following procedures to minimize exposure to EMF:
A)
Route the electrode and work cables together. Secure them with tape
when possible.
B)
Never coil the torch or work cable around your body.
C)
Do not place your body between the torch and work cables. Route
cables on the same side of your body.
D)
Connect the work cable to the work piece as close as possible to the
area being welded.
E)
Keep welding power source and cables as far away from your body as
possible.
FLYING METAL CAN INJURE EYES -
Welding, chipping, wire brushing and grinding can cause sparks
and flying metal. As welds cool, they can throw off slag.
Therefore:
1) Wear approved safety glasses with side shields even under
your welding helmet.
BUILD UP OF GAS CAN INJURE OR KILL -
1) Shut off shielding gas supply when not in use.
2) Always ventilate confined spaces or use approved air-
supplied respirator.
Safety Precautions
ELEC TR I CAL SHOC K -
Contact with live electrical parts and ground can cause severe
injury or death. The electrode (the weld stud and chuck) and
work circuit (ground) are electrically live whenever the output
is on. The input power circuit and the machine internal circuits
are also live whenever power is on. Improperly installed or
improperly grounded equipment is a hazard. Therefore:
1)
Disconnect input power before installing or servicing this equipment. Lock-
out/tagout input power according to OSHA 29 CFR 1910.147 (see Safety
Standards).
2)
Do not touch live electrical parts. Do not touch the electrode (stud) if you
are in contact with the work, ground, or another electrode from a different
machine.
3)
Be sure the power source frame (chassis) is connected to the ground system
of the input power.
4)
When making input connections, attach proper grounding conductors first and
then double-check connections.
5)
Always verify the supply ground - 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.
6)
Refer to ANSI/ASC Standard Z49.1 (listed on page 6) for specific grounding
recommendations. Do not mistake the work lead for a ground cable.
7)
Clamp work cable with good metal-to-metal contact (spring and/or magnetic
clamps are not recommended) to work piece as near the weld as practical.
8)
DO NOT use welding current in damp areas, if movement is confined, or if
there is danger of falling.
9)
Properly install and ground this equipment according to this Owner's Manual
and national, state and local codes.
10) Connect the work cable to the work piece. A poor or missing connection can
expose you or others to a fatal shock.
11) Keep everything dry, including clothing, work area, cables, torch/electrode
holder and power source.
12) Wear dry, hole-free insulated gloves & body protection before turning on
power.
13) Insulate yourself from work and ground using dry insulating mats or covers big
enough to prevent any physical contact with the work or ground.
14) Don't stand directly on metal or the earth while working in tight quarters or a
damp area; stand on dry boards or an insulating platform and wear rubber-
soled shoes.
15) Turn off all equipment when not in use.
16) Use well-maintained equipment. Frequently inspect input power cord and out-
put weld cables for damage or bare wiring. Replace worn or damaged cables
immediately; bare wiring can kill. Repair or replace damaged parts at once.
Maintain this unit according to the manual.
17) Do not use worn, damage, undersized or poorly spliced cables.
18) Do not drape cables over your body.
19) If earth grounding of the work piece is required, use a separate cable.
20) Wear a safety harness if working above floor level.
21) Keep all panels and covers securely in place.
22) Insulate work clamp when not connected to work piece to prevent contact
with any metal object.
23) Don't connect multiple electrodes or work cables to a single weld output
terminal.
SIGNIFICANT DC VOLTAGE exists after removal of the input power on
inverters. Turn off inverter, disconnect input power, and discharge input
capacitors according to instructions in Maintenance Section before touching
any parts.
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