OPERATING INSTRUCTIONS
WARNING
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or electrode with skin or wet clothing.
•Insulate yourself from work and ground.
•Always wear dry insulating gloves.
FUMES AND GASES can be danger-
ous.
• Keep your head out of fumes.
• Use ventilation or exhaust to remove fumes from breathing zone.
WELDING SPARKS can cause fire or 
explosion.
•Keep flammable material away.
•Do not weld on closed containers.
ARC RAYS can burn eyes and skin.
•Wear eye, ear and body protection.
See additional warning information at front of this operator’s manual.
DUTY CYCLE
The Invertec is rated at 300 amps, 60% duty cycle for 3 phase inputs (based on a 10 minute cycle). It is also rated at 250 amps, 100% duty cycle.
CONTROL FUNCTION / OPERATION
Power Switch - Place the lever in the “ON” position to energize the machine. When the power is on, the digi- tal meter will activate and the fan will operate.
OFF
Output Control - This controls the output voltage in the CV modes and output current in the CC modes.
Control is provided over the entire output range of the power source with 1 turn of the control knob. This con- trol may be adjusted while under load to change power source output.
OUTPUT
Local/Remote Switch - Place in the “LOCAL” posi- tion to allow output adjustment at the machine. Place in the “REMOTE” position to allow output adjustment at the wire feeder or with a remote control option package.
REMOTE
Digital Meter Switch - Select either “A” for amps or “V” for volts to display welding current or voltage on the meter.
When welding current is not present, the meter will display the set current for the CC modes or the set voltage for the CV modes. This set reading is an indi- cation of machine control setting. For a more precise process reading, read meter during actual welding.
Mode Switch
GTAW Optimized for both scratch start and Hi- Freq kit use.
CCSOFT Best for EXX18 thru EXX28 stick elec- trodes.
CCCrisp Use this mode for stick welding with EXX10 thru EXX14 electrodes. Non- welding applications such as resistive heating or output tests with resistive loads should be done in this mode with Arc Force Control set to minimum.
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