OPERATING INSTRUCTIONS
Safety Precautions
WARNING
ELECTRIC SHOCK can kill.
•Have an electrician install and service this equipment.
•Turn the input power off at the fuse box before working on equipment.
•Do not touch electrically hot parts.
•This next section applies to CV
When using a CV
When used with some wire feeders with the electrical trigger interlock in the ON position, the arc can restart if the electrode touches the work or ground during these several seconds.
POWER SOURCE OPERATION
Duty Cycle and Time Period
The CV
Duty Cycle* | Amps | Volts |
|
|
|
100% | 400 | 36 |
60% | 450 | 38 |
50% | 500 | 40 |
|
|
|
*Based upon a 10 minute time period. (i.e., for 60% duty cycle, it is 6 minutes on and 4 minutes off).
Overloading the power source may result in opening of an internal protective thermostat as indicated by the amber thermal protection light turning on.
STARTING THE MACHINE
The POWER toggle switch at the extreme right side of the control panel in the “ I “ position energizes and closes the three phase input contactor from a 115 volt auxiliary transformer. This in turn energizes the main power transformer.
The machine is
The white light next to the POWER switch indicates when the input contactor is energized.
CONTROL SETTINGS & DESCRIPTIONS
OUTPUT VOLTAGE CONTROL DIAL
The Output control dial at the right of the control panel is a continuous control of the machine output voltage. The control may be rotated between minimum and maximum to adjust the machine output, even while welding.
The machine is equipped with line voltage compensa- tion as a standard feature. This will hold the output constant except at maximum output of the machine, through a fluctuation of ±10% input line voltage.
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