Lincoln Electric SVM 122-A service manual Operation

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B-5 B-5

OPERATION

7.AUXILIARY POWER AND REMOTE CONTROL CONNECTIONS FOR WIRE FEEDER AND OTHER EQUIPMENT (115V AND 42V): The 14- pin amphenol receptacle provides either 115 or 42 volts AC as well as remote control connec- tions. Terminal strips with screw connections are located behind the hinged control panel for hard wired control. Only 115 volts AC is available on the terminal strip. A strain relief connector is pro- vided for cable entry.

8.MODE SWITCH: Selects between Constant Voltage FCAW/GMAW and Constant Voltage Submerged Arc (Red range on dial), and Constant Current Stick/TIG (Blue range on dial).

9.ARC CONTROL: A five-position switch that changes the pinch effect of the arc when in the CV FCAW/GMAW mode. It allows control of spatter, fluidity, and bead shape. The Arc Control is set to provide optimum welding depending on the process, position, and electrode. Pinch effect is increased by turning the control clockwise. It can also be adjusted while the machine is in opera- tion.

10.THERMAL PROTECTION INDICATOR LIGHT: This amber light indicates that either of the two protective thermostats has opened. Output power is removed, but input power is still being applied to the machine.

11.DC AMMETER: Displays output current when welding.

12.DC VOLTMETER: Displays output voltage when welding.

13.VOLTMETER “+” ELECTRODE OR “-” ELEC- TRODE SWITCH: Selects the electrode polarity for the remote work sensing lead (#21) when using automatic or semiautomatic wire feeders.

IDEALARC DC-400

LINCOLN ®

ELECTRIC