Miller Electric Bobcat 250 manual Typical Settings For 4043, Aluminum On 1/8 in Material, Work

Models: Bobcat 250

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. A complete Parts List is available at www.MillerWelds.com

6-5. Typical MIG Connections And Settings Using Weld Control And Spoolgun

Tools Needed:

Typical Settings For 4043 (.035)

Aluminum On 1/8 in Material:

 

3/4 in

 

 

Note Coarse Range and Weld

 

Process switch settings.

 

10

9

8

Work

Connect to unused

 

contactor terminal.

12

6

5

Plug and sensing lead not used in this application.

Left Side View

2

1

3

11

 

 

4

5

6

7

802 750-B / 228 201-B

 

 

 

 

 

 

. This section provides general guide-

. Be sure to use the correct size weld

 

Typical Settings For 4043 (.035)

 

lines and may not suit all applications.

cables (see Section 5-7).

 

Aluminum On 1/8 in Material:

 

 

 

 

1

Weld Control

Route weld cable from welding generator

 

> Set Weld Process Selector switch to

2

Spoolgun

Electrode terminal through reed switch to

 

 

Wire + (DCEP) position.

unused contactor terminal. Connect weld

 

 

 

 

 

 

 

3

Optional Contactor (Recommended)

cable from spoolgun to weld control weld ter-

 

> Set Coarse Range switch to Wire/Low

4

Reed Switch

minal (item 6).

 

 

 

(17-22 volts) position.

 

 

 

 

5

Weld Cable (Customer-Supplied)

Connect work cable to welding generator

 

> Set Fine Control to desired voltage

6

Weld Control Weld Terminal

Work terminal.

 

 

Insert trigger control plug (item 11) into weld

 

 

(arc length). Start with a low voltage

7

Weld Power Cable From Spoolgun

 

 

setting (about 4) to prevent burnback.

control receptacle. Tighten threaded collar.

 

 

8

Work Clamp

 

 

 

Connect ac power cord (item 12) to 120 volt

 

> Set wire feed speed between 240-270

9

Gas Hose

 

ac receptacle on welding generator.

 

 

ipm. For 1/4 in. and thicker materials,

10

Argon Cylinder

Connect gas hose from spoolgun to regula-

 

 

set Coarse Range switch to Wire/High

11

Trigger Control Cord

tor on Argon bottle.

 

 

 

and Fine Control to 6. Increase/de-

 

 

 

crease Fine Control setting to in-

 

 

 

 

 

 

12

Input Power Cord

Reinstall weld control wrapper.

 

 

crease/decrease arc length.

OM-4419 Page 28

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Miller Electric Bobcat 250 manual Typical Settings For 4043, Aluminum On 1/8 in Material, Work