OM-239026 Page 2
FALLING EQUIPMENT can injure.
Use correct procedures and equipment of ade-
quate capacity to lift and support unit.
If using lift forks to move unit, be sure forks are
long enough to extend beyond opposite side of
unit.
Keep equipment (cables and cords) away from moving vehicles
when working from an aerial location.
Follow the guidelines in the Applications Manual for the Revised
NIOSH Lifting Equation (Publication No. 94
−
110) when manu-
ally lifting heavy parts or equipment.
MOVING PARTS can injure.
Keep hands, hair, loose clothing, jewelry, tools,
and other objects away from moving parts such
as fans.
Keep all doors, panels, covers, and guards closed and securely
in place.
Have only qualified persons remove doors, panels, covers, or
guards for maintenance and troubleshooting as necessary.
Reinstall doors, panels, covers, or guards when maintenance is
finished and before reconnecting input power.
FIRE OR EXPLOSION hazard.
Do not install or place unit on, over, or near
combustible surfaces.
Do not install unit near flammables.
Do not overload building wiring
−
be sure power supply system is
properly sized, rated, and protected to handle this unit.
READ INSTRUCTIONS.
Read and follow all labels and the Owner’s
Manual carefully before installing, operating, or
servicing unit. Read the safety information at
the beginning of the manual and in each
section.
Use only genuine replacement parts from the manufacturer.
Perform installation, maintenance, and service according to the
Owner’s Manuals, industry standards, and national, state, and
local codes.
1-3. Arc Welding And Plasma Cutting Hazards
Touching live electrical parts can cause fatal shocks
or severe burns. The electrode and work circuit is
electrically live whenever the output is on. The input
power circuit and machine internal circuits are also
live when power is on. In semiautomatic or automatic
wire welding, the wire, wire reel, drive roll housing,
and all metal parts touching the welding wire are
electrically live. Incorrectly installed or improperly
grounded equipment is a hazard.
Do not touch live electrical parts.
ELECTRIC SHOCK can kill.
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 use AC weld output in damp, wet, or confined spaces, or if
there is a danger of falling.
Use AC output ONLY if required for the welding or cutting process.
If AC output is required, use remote output control if present on
unit.
Additional safety precautions are required when any of the follow-
ing electrically hazardous conditions are present: in damp
locations or while wearing wet clothing; on metal structures such
as floors, gratings, or scaffolds; when in cramped positions such
as sitting, kneeling, or lying; or when there is a high risk of unavoid-
able or accidental contact with the workpiece or ground. For these
conditions, use the following equipment in order presented: 1) a
semiautomatic DC constant voltage (wire) welder, 2) a DC manual
(stick) welder, or 3) an AC welder with reduced open-circuit volt-
age. In most situations, use of a DC, constant voltage wire welder
is recommended. And, do not work alone!
Disconnect input power or stop engine before installing or
servicing this equipment. Lockout/tagout input power according to
OSHA 29 CFR 1910.147 (see Safety Standards).
Properly install, ground, and operate this equipment according to
its Owner’s Manual and national, state, and local codes.
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.
When making input connections, attach proper grounding conduc-
tor first
−
double-check connections.
Keep cords dry, free of oil and grease, and protected from hot metal
and sparks.
Frequently inspect input power cord for damage or bare wiring
−
replace cord immediately if damaged
−
bare wiring can kill.
Turn off all equipment when not in use.
Do not use worn, damaged, undersized, or poorly spliced cables.
Do not drape cables over your body.
If earth grounding of the workpiece is required, ground it directly
with a separate cable.
Do not touch electrode if you are in contact with the work, ground,
or another electrode from a different machine.
Do not touch electrode holders connected to two welding ma-
chines at the same time since double open-circuit voltage will be
present.
Use only well-maintained equipment. Repair or replace damaged
parts at once. Maintain unit according to manual.
Wear a safety harness if working above floor level.
Keep all panels and covers securely in place.
Clamp work cable with good metal-to-metal contact to workpiece
or worktable as near the weld as practical.
Insulate work clamp when not connected to workpiece to prevent
contact with any metal object.
Do not connect more than one electrode or work cable to any
single weld output terminal. Disconnect cable for process not in
use.
SIGNIFICANT DC VOLTAGE exists in inverter pow-
er sources AFTER removal of input power.
Turn off unit, disconnect input power, and discharge input capaci-
tors according to instructions in Manual before touching any parts.
HOT PARTS can burn.
Do not touch hot parts bare handed.
Allow cooling period before working on
equipment.
To handle hot parts, use proper tools and/or wear heavy, insu-
lated welding gloves and clothing to prevent burns.
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Страница 28: ...OM 239026 Page 24 SECTION 9 ELECTRICAL DIAGRAM 246597 F Figure 9 1 Circuit Diagram...