Lincoln Electric SVM153-A Welder Operation, Stick Welding, Constant Current CC Welding

B-9 B-9

OPERATION

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Table B.2 – DEUTZ F3L 912

ENGINE FUEL CONSUMPTION

	Deutz F3L 912	Running Time
	44.2 Hp	for 25 gallons
	@ 1800 RPM	(Hours)
Low Idle - No	.47 gallons/hour	53.2
Load 1475 RPM	(1.77 liters/hour)
High Idle - No	.66 gallons/hour	37.9
Load 1900 RPM	(2.50 liters/hour)
DC CC Weld	1.94 gallons/hour	12.9
Output 500	(7.34 liters/hour)
Amps @ 40 Volts
Auxiliary Power	1.31 gallons/hour	19.1
12,000 VA	(4.96 liters/hour)

WELDER OPERATION

STICK WELDING

The Commander 500 can be used with a broad range of DC stick electrodes.

The “WELD MODE” switch provides five overlapping slope controlled current ranges. The OUTPUT adjusts the current from minimum to maximum within each range. Voltage is also controlled by the OUTPUT in the slope controlled setting. These slope controlled set- tings are intended for “out-of-position” welding, includ- ing pipe welding, where the operator would like to con- trol the current level by changing the arc length.

CONSTANT CURRENT (CC) WELDING

In the CC - STICK position of 30 to 575, the WELD MODE switch is designed for horizontal welds with all types of electrodes, especially low hydrogen. The OUTPUT adjusts the full range of 30 to 575 amps. This setting provides a soft, constant current arc. If a more forceful arc is desired, select the proper range from the slope controlled current ranges.

In the CC mode, sticking can be prevented by adjust- ing the ARC CONTROL. Turning this control clockwise increases the short circuit current, thus preventing sticking. This is another way of increasing arc force.

TIG WELDING

The furthest position clockwise of the WELD MODE switch is for TIG welding in the range of 20 amps to 250 amps, with a “Touch Start” feature. To initiate a weld, the OUTPUT is first set to the desired current, and the tungsten is touched to the work. During the time the tungsten is touching the work, there is very little voltage or current and, in general, no tungsten contamination. Then, the tungsten is gently lifted off the work in a rock- ing motion, which establishes the arc.

The Commander 500 can be used in a wide variety of DC Tungsten Inert Gas (TIG) welding applications. In general the “Touch Start” feature allows contamination- free starting without the use of a Hi-Freq unit. But the K930-1 or -2 TIG module or K799 Hi-Freq unit can be used with the Commander 500. The settings for these follow the tungsten current range table, Table B.3.

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PIPE WELDING

The Commander 500 is equipped with special circuitry to minimize pop-outs in the five slope modes at any open circuit voltage.

For a soft arc characteristic, set the WELD MODE switch to the lowest setting that still provides the cur- rent you need and set the OUTPUT near maximum. For example: to obtain 140 amps and a soft arc, set the WELD MODE switch to the 150 MAX position and then adjust the OUTPUT for 140 amps.

When a forceful, "digging" arc is required, use a higher setting and lower the open circuit voltage. For example: to obtain 140 amps and a forceful arc, set the WELD MODE to the 250 MAX position and then adjust the OUTPUT to get 140 amps.

COMMANDER 500