Tweco FP-160 - Manual (Page 18)

The torch switch must be pressed thoroughly to perform its three functions: gas
flow, wire feed and welding current.) Start welding and decrease the wire speed gradually.
Continue to decrease the wire speed and listen to the sound. The sound will change from a
crackling noise to a regular and strong buzzing (similar to the sound of frying bacon). This
buzzing sound indicates the correct wire speed for the workpiece being welded. When the
current regulation is changed, reset the wire speed. ALWAYS start from a higher wire speed.
This operation prevents damage to the contact tip during welding. During welding, keep the
torch at a 45º angle from the workpiece. Keep the nozzle 1/4” to 1/2” from the workpiece.
ADDITIONAL SAFETY INFORMATION
Make sure you read and understand all of the information and instructions contained in this manual BEFORE
proceeding.
The National Electrical Code, Occupational Safety and Health Act (OSHA) regulations, local industrial codes
and local inspection requirements also provide a basis for equipment installation, use and service.
For additional information concerning welding safety, refer to the following standards and comply with them
as applicable.
• ANSI Standard Z49.1 - SAFETY IN WELDING AND CUTTING - obtainable from the American Welding
Society, 2051 N.W. 7th St. Miami, FL 33125 (305) 443-9353.
• ANSI Standard Z87.1 - SAFE PRACTICE FOR OCCUPATION AND EDUCATIONAL EYE AND FACE
PROTECTION - obtainable from the American National Standards Institute, 1430 Broadway, New York, NY
10018.
• NFPA Standard SIB - CUTTING AND WELDING PROCESSES - obtainable from the National Fire
Protection Association, 470 Atlantic Avenue, Boston, MA 02210.
• CGA Pamphlet P-I - SAFE HANDLING OF COMPRESSED GASSES IN CYLINDERS - obtainable from
the Compressed Gas Association, 5005th Avenue, New York, NY 10038.
• OSHA Standard 29 CFR, Part 1910, Subpart 0. - WELDING, CUTTING AND BRAZING - obtainable from
your state OSHA office.
• CSA Standard W117.2 - CODE FOR SAFETY IN WELDING AND CUTTING - obtainable from Canadian
Standards Association, 178 Rexdale Blvd., Rexdale, Ontario Canada M9W 1R3.
• American Welding Society Standard A6.0 - WELDING AND CUTTING CONTAINERS WHICH HAVE
HELD COMBUSTIBLES - obtainable from the American Welding Society, 2051 N.W. 7th St., Miami, FL
33125 (305) 443-9353.
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