TEKHMANN TWI-200 B, Инструкция по эксплуатации

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As soon as the arc is struck, try keeping the distance from welding point equal to electrode diameter.
Remember that electrode angle when moving should be 20-30 degrees.
After making welding seam move the electrode back. This is necessary for filling the welding crater.
Dangerous factors when performing welding operations
Fire prevention
• All inflammable materials should be removed from the welding area.
• Do not strike the arc on a gas tank or near it.
• Never attempt to weld fuel tanks or tanks filled with gas unless all measures are taken to guarantee
that they contain no fumes.
• Before welding fuel tanks they must be thoroughly cleaned with steam.
Welding fumes
When welding, toxic fumes are emitted. Always work in well ventilated areas.
Electric arc light
Always use protecting mask or welding helmet, equipped with corresponding glass filter. Never use
damaged safety equipment.
High temperature
Use protective gloves. They provide hands protection from ultra-violet light and heat, emitted by
electric arc. It is recommended to wear special clothing.
Additional protective cloths
When welding with heavy current use protecting apron, which will protect you from spatter.
When performing overhead welding use adequate head wear, which will protect your head and neck.
It is recommended to wear closed safety boots with steel toe caps.
Maintenance
WARNING! Before disassembling any panel of the machine for performing any operations
inside disconnect the plug from the receptacle.
Regularly, depending on usage in dusty environment, perform maintenance of the machine internals.
Remove dust from internal components of the machine with low pressure air flow.
After maintenance reinstall panels and tighten screws.
Never perform welding when the machine is open!
Troubleshooting
Before contacting service center for technical assistance perform the following checks:
• Ensure the welding current regulated by potentiometer corresponds the diameter and type of the
used electrode.
• Power indicator (On) shall not lit when there is power failure (check cables, outputs, fumes etc.).
• Yellow indicator shows overheating, short circuit, too low or too high voltage.
• Check voltage of the power line. Machine will not work if the voltage is too low or too high. Machine
will start automatically only if voltage returns back to normal level.
• Ensure that there is no short circuit on the output of the machine. Otherwise eliminate the defect.
• All connections of the welding circuit must be operational, and functional terminal must be securely
fixed to the work piece to be welded.
CAUTION!