4.Depress the gun trigger switch and feed welding wire through the gun and cable (Point gun away from yourself and others while feeding wire.) Release gun trigger after wire appears at end of gun.
5.Replace contact tip and gas nozzle.
6.Cut the wire off 1/4 – 3/8" (6 – 10 mm) from the end of the tip. The
Making A Weld
1.See “Recommended Processes and Equipment” section for selection of welding wire and shielding gas and for range of metal thicknesses that can be welded.
2.See the Applications chart on the inside of wire feed section door for information on setting the
3.Set the Voltage (“V”) and Wire Speed (“oIo”) con- trols to the settings suggested for the welding wire and base metal thickness being used.
4.Check that the polarity is correct for the welding wire being used and that the gas supply, if required, is turned on.
5.When using Innershield® electrode, remove the gas nozzle and install the gasless nozzle. This will improve visibility of the arc and protect the gas dif- fuser from weld spatter.
6.Connect work clamp to metal to be welded. Work clamp must make good electrical contact to the workpiece. The workpiece must also be grounded as stated in “Arc Welding Safety Precautions”.
7.Position gun over joint. End of wire may be lightly touching the work.
8.Lower welding helmet, close gun trigger, and begin welding. Hold the gun so the contact tip to work distance is about 3/8 inch (10 mm).
9.To stop welding, release the gun trigger and then pull the gun away from the work after the arc goes out.
10.When no more welding is to be done, close valve on gas cylinder (if used), momentarily operate gun trigger to release gas pressure, and turn off SP- 100.
OVERLOAD PROTECTION SHUTDOWN
Welding Power Overload Protection
CAUTION
Exceeding the maximum rating of the
The
If the machine shuts down due to an output overload, first check the circuit breaker which is located on the inside panel of the wire feed section. If the button is extended, reset after several minutes of cooling, by depressing the button.
If there is no output and the circuit breaker is not tripped, the internal thermostat has probably tripped. This device will automatically reset after several min- utes of cooling. Leaving the machine on with the fan motor running will cool the machine at a faster rate, allowing the thermostat to reset sooner.
If the
Wire Feed Overload Protection
The
The wire feed shutdown will reset automatically when the gun trigger is released, but will reoccur if the over- load situation is not corrected. The two most common causes of wire feed overload are an excessively bent gun cable and a plugged contact tip. (See Maintenance and Troubleshooting Section.)
The serviceability of a product or structure utilizing this type of information is and must be the sole responsibility of the builder/user. Many variables beyond the control of The Lincoln Electric Company affect the results obtained in applying this type of information. These variables include, but are not limited to, welding procedure, plate chemistry and temperature, weldment design, fabrication methods and service requirements.
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