Lincoln Electric IM10019 manual Welder Operation, Table B.2

B-5 OPERATION B-5

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

The BIG RED™ 600 is designed for horizontal, ver- tical up, and overhead welding with all types of DC stick electrodes.

For any electrode the procedures should be kept within the rating of the machine. For information on electrodes and their proper application see (www.lincolnelectric.com) or the appropriate Lincoln publication.

WELDING MODE

Set the Welding mode switch for the desired process, either Stick / Gouging or TIG.

CONSTANT CURRENT STICK WELDING

CAUTION

DO NOT TURN THE “OUTPUT RANGE SELEC- TOR” WHILE WELDING because the current may arc between the contacts and damage the switch.

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The “Output Range Selector” provides five overlap- ping current ranges. The “Output Current Adjustment” adjusts the current from minimum to maximum within each range. Open circuit voltage is also controlled by the “Output Current Adjustment” permitting control of the arc characteristics.

A high open circuit voltage setting provides the soft “buttering” arc with best resistance to pop-outs pre- ferred for most welding. To get this characteristic, set the “Output Range Selector” to the lowest set- ting that still provides the current you need and set the “Ouput Current Adjustment” near maximum.

For example: to obtain 175 amps and a soft arc, set the “Output Range Selector” to the 105-220 position and then adjust the “Output Current Adjustment” to get 175 amps.

When a forceful “digging” arc is required, usually for vertical and overhead welding, use a higher “Output Range Selector” setting and lower open circuit volt- age.

For example: to obtain 175 amps and a forceful arc, set the “Output Range Selector” to the 150-330 position and the “Output Current Adjustment” set- ting to get 175 amps.

Some arc instability may be experienced with EXX10 electrodes when trying to operate with long arc techniques at settings at the lower end of the open circuit voltage range.

CAUTION

DO NOT attempt to set the “Current Range Selector” between the five points designated on the nameplate.

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ARC GOUGING

Using the “Output Range Selector” and “Output Control Adjustment” set the output to the desired level for the gouging electrode being used see table B.2.

TABLE B.2

Carbon Diameter		Current Range (DC, elec-
		trode positive)
	1/8"(3.2mm)	60-90 Amps
	5/32"(4.0mm)	90-150 Amps
	3/16"9(4.8mm)	200-250 Amps
	1/4"(6.4mm)	300-400 Amps
	5/16"(8.0mm)	350-450 Amps
	3/8"(9.5mm)	450-600 Amps

BIG RED™ 600