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b. Do not weld, cut or heat lead, zinc, cadmium, mercury, beryllium or similar metals without seeking professional
advice and inspection of the welding area's ventilation. These metals produce extreme toxic fumes, which can
cause discomfort, illness and death.
c. Do not weld or cut near chlorinated solvents or in areas that chlorinates solvents can enter. The heat or
ultraviolet light of the arc can separate chlorinated hydrocarbons into a toxic gas (phosgene) that can poison or
suffocate the user or bystanders.
COMPRESSED GAS CYLINDER PRECAUTIONS
WARNING! Improper handling or maintenance of compressed gas cylinders and regulators can result in serious
injury or death. Do not use a cylinder or its contents for anything other than its intended use.
1. Only use inert or nonflammable gas with the tool, such as Carbon Dioxide, Argon or Helium with the welding unit.
a. Never use flammable gases as they will ignite and may result in an explosion or fire that can cause death or
injury.
2. Do not attempt to mix gases or refill a gas cylinder. Exchange the cylinders or have it refilled by a professional
service.
3. Do not deface or alter the name, number or other markings on a cylinder. Do not rely on cylinder color to identify the
contents. Do not connect a regulator to a cylinder containing gas other than that for which the regulator
was designed.
4. Do not expose cylinders to excessive heat, sparks, slag, flame or any other heat source.
a. Cylinders exposed to temperatures above 130°F will require water spray cooling. This method may not be
compatible with electric welding units due to the hazard of electrical electrocution.
5. Do not expose cylinders to electricity of any kind.
6. Do not attempt to lubricate a regulator. Always change cylinders carefully to prevent leaks and damage to their walls,
valves or safety devices.
7. Gasses in the cylinder are under pressure. Protect the cylinder from bumps, falls, falling objects and harsh weather.
A punctured cylinder under pressure can become a lethal projectile. If a cylinder is punctured, do not approach until
all pressure is released.
a. Protect the valve and regulator. Damage to either can result in an explosive ejection from the cylinder.
8. Always secure gas cylinders in a vertical position to a welding cart or other fixed support with a steel chain so it
cannot be knocked over.
a. Do not locate a cylinder in a passageway or work area where it may be struck.
b. Do not use as an improvised support or roller.
9. Always place the cylinder cap securely on the cylinder before moving the gas cylinder.
10. Do not use a wrench or hammer to open a cylinder valve that cannot be opened by hand. Notify your supplier for
instructions.
11. Do not use a wrench or hammer to open a cylinder valve that cannot be opened by hand. Notify your supplier for
instructions.
12. Do not modify or exchange gas cylinder fittings.
13. Do not attempt to make regulator repairs. Send faulty regulators to the manufacturer's designated repair center.
14. Always close the cylinder valve and immediately remove a faulty regulator from service for repair, if any of the
following conditions exist:
a. Gas leaks externally.
b. Delivery pressure continues to rise with the downstream valve closed.
c. The gauge pointer does not move off the stop pin when pressurized or fails to return to the stop pin after
pressure is released.
ELECTROMAGNETIC FIELDS
Electromagnetic Fields (EMF) can interfere with electronic devices such as pacemakers. Anyone with a pacemaker
should consult with their doctor before working with or near an arc welding unit. The following steps can minimize the
effects of electromagnetic fields.
1. Twist or tape cables together and prevent coils.
2. Do not drape cables on your body.
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SMART TIG AC/DC-200P Inverter Welding Machine
For technical questions call 1-800-665-8685
V4.1