Eastwood MP140i Instructions Manual page 23

ELECTROMAGNETIC FIELDS CAN BE A HEALTH HAZARD!
• The electromagnetic field that is generated during arc welding may interfere with various electrical and electronic devices such
as cardiac pacemakers. Anyone using such devices should consult with their physician prior to performing any electric welding
operations.
• Exposure to electromagnetic fields while welding may have other health effects which are not known.
ARC RAYS CAN BURN!
• Arc rays produce intense ultraviolet radiation which can burn exposed skin and cause eye damage. Use a shield with the proper
filter (a minimum of #11) to protect your eyes from sparks and the rays of the arc when welding or when observing open arc
welding (see ANSI Z49.1 and Z87.1 for safety standards).
• Use suitable clothing made from durable flame-resistant material to protect your skin.
• If other persons or pets are in the area of welding, use welding screens to protect bystanders from sparks and arc rays.
FUMES AND WELDING GASES CAN BE A HEALTH HAZARD!
• Fumes and gasses released during welding are hazardous. Do not breathe fumes that are produced by the welding operation. Wear
an OSHA-approved respirator when welding.
• Always work in a properly ventilated area.
• Never weld coated materials including but not limited to: cadmium plated, galvanized, lead based paints.
HOT METAL AND TOOLS WILL BURN!
• Electric welding heats metal and tools to temperatures that will cause severe burns!
• Use protective, heat resistant gloves and clothing when using Eastwood or any other welding equipment. Never touch welded work
surface, torch tip or nozzle until they have completely cooled.
IMPORTANT NOTE: These instructions are intended only to provide the user with some familiarity of the Eastwood MP140i. TIG welding is a highly complex
procedure with many variables. If you have no experience with TIG welding; it is extremely important to seek the advice of someone experienced in TIG welding
for instruction, enroll in a local technical school welding course or study a comprehensive how-to DVD and obtain a good quality reference book on TIG welding
as there is a moderate learning curve necessary before achieving proficiency in TIG Welding. Before attempting to use this unit on an actual project or object of
value, practice on a similar material as there are many variables present and settings required when TIG welding different metals such as steel and stainless
steel. It is also strongly recommended that the user adhere to the American Welding Society guidelines, codes and applications prior to producing welds where
safety is affected.
• Turn the Power Switch at the Upper Rear Panel to the "ON" position.
• Slowly open the gas cylinder valve. NOTE: Always open valve fully to avoid shielding gas leakage.
• Adjust the flow regulator built-in to the Torch Handle. Rotate Counter-clockwise to open, Clockwise to Close.
• Grounding is very important, place the Ground Cable Clamp on a clean, bare area of your work piece as close to the welding area as possible to minimize
the chance of shock. Scrape, wire brush, file or grind a bare area to achieve a good ground to assure safety.
• Use a dedicated stainless steel brush or flap-disc to clean the areas to be welded. Do not use the brush or flap-disc for any other purpose.
• Making sure all your safety gear is in place (Welding Mask, Welding Gloves, non-flammable long sleeve apparel) and the area is completely free of flam-
mable material.
• Although it is a matter of developing a personal style, a good starting point for best results is achieved by holding the tip at a 45° angle backward and
approx. 20° to the right of the weld. Hold the Filler Metal Rod at a 60° angle to the Tungsten Tip. Never allow the Tungsten Tip to touch the welding surface
or material rod. Doing so will quickly destroy the tip and contaminate the weld. If this happens, remove the Tungsten and regrind the tip. It is best to hold
the Tungsten tip 1/8" from the surface.
• With your Welding Shield and all safety gear in place, practice "Forming a Puddle" with the Tungsten Tip. Once you become familiar with this step. Practice
the "Dip and Pull" technique with the Filler Metal Rod and Torch. "Dip and Pull" is the practice of forming a puddle, moving the Torch while maintaining the
puddle and adding filler rod metal to the puddle by "dipping and pulling" as you go; being careful not to allow the Tungsten to contact the puddle or rod.
• To stop welding, pull the Tip back over the weld approx. 1/2" [13mm] then lift to break the arc. Keep shielding gas flow in place for approx. 10 seconds.
• Keep in mind that you MUST let the shielding gas flow over the weld for approx. 10 seconds. Failure to do so will allow the welded area to oxidize as it
cools, compromising the weld integrity.
• Constantly be aware that TIG welding quickly generates heat in the work piece and Torch. Severe burns can quickly occur by contacting hot metal pieces.
• When done, shut off the Power Switch, close the Regulator in the Torch Handle then close the Shielding Gas Tank valve completely.
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