Lincoln Electric IM992 manual Stopping the Engine, Welder Operation

b-5 OPERATION b-5

STOPPING THE ENGINE

Remove all welding and auxiliary power loads and allow the engine to run at low idle speed for a few minutes to cool the engine.

STOP the engine by placing the RUN-STOP switch in the STOP position.

NOTE: A fuel shut off valve is located on the fuel pre- filter.

WELDER OPERATION

DUTY CYCLE

Duty Cycle is the percentage of time the load is being applied in a 10 minute period. For example a 60% duty cycle, represents 6 minutes of load and 4 minutes of no load in a 10 minute period.

ELECTRODE INFORMATION

For any electrode the procedures should be kept with- in the rating of the machine. For information on elec- trodes and their proper application see (www.lincoln- electric.com) or the appropriate Lincoln publication.

The VANTAGE® 300 can be used with a broad range of DC stick electrodes. The MODE switch provides two stick welding settings as follows:

CONSTANT CURRENT (CC-STICK) WELDING

The CC-STICK position of the MODE switch is designed for horizontal and vertical-up welding with all types of electrodes, especially low hydrogen. The OUTPUT CON- TROL dial adjusts the full output range for stick welding.

The ARC CONTROL dial sets the short circuit current

(arc-force) during stick welding to adjust for a soft or crisp arc. Increasing the number from -10(soft) to +10(crisp) increases the short circuit current and pre- vents sticking of the electrode to the plate while welding. This can also increase spatter. It is recommended that the ARC CONTROL be set to the minimum number with- out electrode sticking. Start with the dial set at 0.

NOTE: Due to the low OCV with the VRD on, a very slight delay during striking of the electrodes may occur. Due to the requirement of the resistance in the circuit to be low for a VRD to operate, a good metal- to-metal contact must be made between the metal core of the electrode and the job.

A poor connection anywhere in the welding output cir- cuit may limit the operation of the VRD. This includes a good connection of the work clamp to the job. The work clamp should be connected as close as practical to where the welding will be performed.

A. For New Electrodes

E6010 - Touch, Lift to Start the Arc

E7018, E7024 - Touch, Rock Back and Forth in Joint, Lift .

Once the arc is started, normal welding technique for the application is then used.

b. For Re-Striking Electrodes

Some electrodes form a cone at the end of the elec- trode after the welding arc has been broken, particu- larly iron powder and low hydrogen electrodes. This cone will need to be broken off in order to have the metal core of the electrode make contact.

E6010 - Push, Twist in Joint, Lift

E7018, E7024 - Push, Rock Back and Forth in Joint,

Lift.

TAbLE b.2

TYPICAL VANTAGE® 300 FUEL CONSUMPTION

		Deutz D2008 L4	Running Time for
		Gal./Hr (Liters/Hr)	20 gallons - (Hours)
Low Idle - No Load		---------	--------
	1400 R.P.M.	.34 (1.30)	58.41
High Idle - No Load		---------	--------
	1800 R.P.M.	.46 (1.75)	43.28
DC Weld Output	150 Amps @ 20 Volts	-----------	--------
		.64 (2.41)	31.39
DC Weld Output	250 Amps @ 24 Volts	-----------	--------
		.86 (3.24)	23.36
DC Weld Output	300 Amps @ 32 Volts	-------------	--------
		1.22 (4.62)	16.37
10,000 Watts		1.10 (4.15)	18.23
7,500 Watts		.89 (3.36)	22.51
5,000 Watts		.73 (2.75)	27.53
2,500 Watts		.58 (2.18)	35.41

NOTE: This data is for reference only. Fuel consumption is approximate and can be influenced by many factors, including engine maintenance, environmental conditions and fuel quality.

VANTAGE® 300