Typical Fuel Consumption

B-9

OPERATION

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CAUTION

WELDER OPERATION

STICK WELDING

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Using your welder at low amperages with long idle run- ning periods during the break-in period may result in a glaze forming on the engine cylinder walls and the rings not seating properly. No amount of loading will properly seat the piston rings after they are glazed over.

Refer to Table B.2 for typical fuel consumption of the Commander 300 engine for various operating scenar- ios.

Table B.2 Deutz F3L 912 Engine Fuel Consumption

	Deutz F3L 1011	Running Time for
	29 HP	25 gallons
	@ 1800 RPM	(Hours)

Low Idle - No	.27 gallons/hour	92.5
Load 1400 RPM	(1.02 liters/hour)

High Idle - No	.48 gallons/hour	52
Load 1900 RPM	(1.81 liters/hour)

DC CC Weld	1.34 gallons/hour	18.6
Output 300	(5.07 liters/hour)
Amps @ 32
Volts
Auxiliary Power	1.32 gallons/hour	18.9
10,000 VA	(5.00 liters/hour)

The Commander 300 can be used with a broad range of DC stick electrodes.

The SELECTOR switch provides five overlapping slope controlled current ranges. The CONTROL adjusts the current from minimum to maximum within each range. Voltage is also controlled by the CON- TROL in the slope controlled setting. These slope-con- trolled settings are intended for “out-of-position” weld- ing, including pipe welding, where the operator would like to control the current level by changing the arc length.

PIPE WELDING

The Commander 300 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 “SELECTOR” Switch to the lowest setting that still provides the cur- rent you need and set the “CONTROL” near maximum. For example: to obtain 140 amps and a soft arc, set the “SELECTOR” Switch to the “150 MAX” position and then adjust the “CONTROL” 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 “SELEC- TOR” to the “230 MAX” position and then adjust the “CONTROL” to get 140 amps.

CONSTANT CURRENT (CC) WELDING

The most clockwise position of the “SELECTOR” switch is designed for horizontal welds with all types of electrodes, but especially low hydrogen. The “CON- TROL” adjusts the full range of 30 to 375 amps. This setting provides a soft, constant current arc. If a more forceful arc is desired, then 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 clock- wise increases the short circuit current, thus preventing sticking. This is another way of increasing arc force.

TIG WELDING

The Commander 300 can be used in a wide variety of DC Tungsten Inert Gas (TIG) welding applications. When used with the K930-1 or -2 TIG module or K799 Hi-Freq Unit, ratings are limited to 375 amps at 20% duty cycle, 300 amps at 60% duty cycle, and 250 amps at 80% duty cycle.

Lincoln Electric SVM145-B service manual Typical Fuel Consumption

Models: SVM145-B

OPERATION