Miller AA40G Benutzerhandbuch - Seite 22

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6-3. Troubleshooting

Trouble

Electrode wire feeding stops or feeds er-

ratically during welding.

Motor runs slowly.

Motor runs at full speed regardless of

wire speed setting.

SECTION 7 − ELECTRICAL DIAGRAM

OM-200580 Page 18

Readjust hub tension and drive roll pressure.

Change to correct size drive roll.

Clean or replace dirty or worn drive roll.

Incorrect size or worn wire guides.

Replace contact tip or liner. See gun Owner's Manual.

Remove weld spatter or foreign matter from around gun nozzle opening.

Check and secure motor plug connection.

Have Factory Authorized Service Agent check drive motor.

Reduce load.

Check for correct input voltage.

Have Factory Authorized Service Agent check digital wire drive motor Tachometer board and encoder.

Figure 7-1. Circuit Diagram For Drive Motor

Remedy

261 290-A