Lincoln Electric IM700-D manual Welder Operation, BREAK-IN Period, Typical Fuel Consumption

B-7 OPERATION B-7

BREAK-IN PERIOD

Lincoln Electric selects high quality, heavy-duty indus- trial engines for the portable welding machines we offer. While it is normal to see a small amount of crankcase oil consumption during initial operation, excessive oil use, wet stacking (oil or tar like substance at the exhaust port), or excessive smoke is not normal.

Larger machines with a capacity of 350 amperes and higher, which are operated at low or no-load conditions for extended periods of time are especially susceptible to the conditions described above. To accomplish suc- cessful engine break-in, most diesel-powered equip- ment needs only to be run at a reasonably heavy load within the rating of the welder for some period of time during the engine’s early life. However, if the welder is subjected to extensive light loading, occasional moder- ate to heavy loading of the engine may sometimes be necessary. Caution must be observed in correctly loading a diesel/generator unit.

1.Connect the welder output studs to a suitable resis- tive load bank. Note that any attempt to short the output studs by connecting the welding leads together, direct shorting of the output studs, or con- necting the output leads to a length of steel will result in catastrophic damage to the generator and voids the warranty.

2.Set the welder controls for an output current and voltage within the welder rating and duty cycle. Note that any attempt to exceed the welder rating or duty cycle for any period of time will result in cata- strophic damage to the generator and voids the warranty.

3.Periodically shut off the engine and check the crankcase oil level.

TYPICAL FUEL CONSUMPTION

Refer to Table B.2 for typical fuel consumption of the Commander 300’s Engine for various operating sce- narios.

Table B.2 Deutz F3L 912 Engine Fuel Consumption

	(Codes 11199 and below)		(Codes 11200 and above)
	Deutz F3L 1011	Running	Deutz F3L 2011	Running
	31 Hp @	Time	32 Hp	Time
	1800 RPM	for 25	@ 1800 RPM	for 25
		gallons		gallons
		(Hours)		(Hours)
Low Idle - No Load	.35 gallons/hour	71.4	.33 gallons/hour	75.8
1475 RPM	(1.32 liters/hour)		(1.23 liters/hour)
High Idle - No	.48 gallons/hour	52	.52 gallons/hour	48.1
Load 1900 RPM	( 1.81 liters/hour)		(1.98 liters/hour)
DC CC Weld	1.34 gallons/hour	18.6	.99 gallons/hour	25.3
Output 300 Amps	( 5.07 liters/hour)		(3.74 liters/hour)
@ 32 Volts
Auxiliary Power	1.32 gallons/hour	18.9	1.10 gallons/hour	22.7
10,000 VA	(5.00 liters/hour)		(4.16 liters/hour)

WELDER OPERATION

STICK WELDING

The Commander 300 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.

•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 "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 exam- ple: 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 300