B-11

OPERATION

B-11

 

 

 

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WIRE FEED (CONSTANT VOLTAGE) WELDING

Connect a wire feeder to the Commander 300 and set welder controls according to the instructions listed ear- lier in this section.

The Commander 300 in the “WIRE WELDING” posi- tion, permits it to be used with a broad range of flux cored wire (Innershield and Outershield) electrodes and solid wires for MIG welding (gas metal arc weld- ing). Welding can be finely tuned using the “ARC CON- TROL.”

Some recommended Innershield electrodes are NR- 311, NS-3M, NR-207, NR-203 Ni 1%, NR-204-H.

Recommended Outershield electrodes are 0S-70, 0S71M.

Some recommended solid wires for MIG welding are.035 (0.9 mm), .045 (1.1 mm) and .052 (1.3 mm), L- 50 and L56, .035 (0.9 mm) and .045 (1.1 mm) Blue Max MIG 308 LS.

For any electrodes, including the above recommenda- tions, the procedures should be kept within the rating of the machine. For additional electrode information, see Lincoln publications N-675, GS-100 and GS-210.

The auxiliary power of the Commander 300 consists of two 15 Amp-120 VAC (5-15R) duplex receptacles and one 50 Amp-120/240 VAC (14-50R) receptacle. The 120/240VAC receptacle can be split for single-phase 120 VAC operation.

The auxiliary power capacity is 10,000 watts of 60 Hz, single-phase power. The auxiliary power capacity rat- ing in watts is equivalent to volt-amperes at unity power factor. The maximum permissible current of the 240 VAC output is 44 A. The 240 VAC output can be split to provide two separate 120 VAC outputs with a maxi- mum permissible current of 44 A per output to two sep- arate 120 VAC branch circuits. Output voltage is with- in + 10% at all loads up to rated capacity.

NOTE: The 120/240V receptacle has two 120V outputs of different phases and cannot be paralleled.

The auxiliary power receptacles should only be used with three-wire, grounded type plugs or approved dou- ble-insulated tools with two-wire plugs.

The current rating of any plug used with the system must be at least equal to the current capacity of the associated receptacle.

SIMULTANEOUS WELDING AND AUXILIARY POWER LOADS

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AUXILIARY POWER OPERATION

It must be noted that the above auxiliary power ratings

Start the engine and set the IDLER control switch to

are with no welding load. Simultaneous welding and

 

the desired operating mode. Full power is available

power loads are specified in table B.4. The permissi-

ble currents shown assume that current is being drawn

regardless of the welding control settings, if no welding

from either the 120 VAC or 240 VAC supply (not both

current is being drawn.

at the same time).

 

TABLE B.4 Commander 300 Simultaneous Welding and Power Loads

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Welding

Output Range

Setting

Welding Output

Permissible

Power - Watts

(Unity Power

Permissible Auxiliary Current in Amperes

30-375

300

230

150

90

60

300A/32V

300A/32V

230A/30V

150A/29V

90A27V

60A/25V

Factor)

400

400

3100

5650

7600

8500

@120 V ±10% *

3.3

3.3

26*

47**

63**

70**

@ 240 V ±10%

1.6

1.6

13

23.5

31.5

35

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*Each duplex receptacle is limited to 15 amps.

**Not to exceed 44 amps per 120VAC branch circuit when splitting the 240VAC output.

COMMANDER 300

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Lincoln Electric SVM145-B service manual Auxiliary Power Operation, Wire Feed Constant Voltage Welding